1a4ce40a9SAlex Elder 23d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 33d14c5d2SYehuda Sadeh 43d14c5d2SYehuda Sadeh #include <linux/module.h> 53d14c5d2SYehuda Sadeh #include <linux/err.h> 63d14c5d2SYehuda Sadeh #include <linux/highmem.h> 73d14c5d2SYehuda Sadeh #include <linux/mm.h> 83d14c5d2SYehuda Sadeh #include <linux/pagemap.h> 93d14c5d2SYehuda Sadeh #include <linux/slab.h> 103d14c5d2SYehuda Sadeh #include <linux/uaccess.h> 113d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 123d14c5d2SYehuda Sadeh #include <linux/bio.h> 133d14c5d2SYehuda Sadeh #endif 143d14c5d2SYehuda Sadeh 153d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 163d14c5d2SYehuda Sadeh #include <linux/ceph/osd_client.h> 173d14c5d2SYehuda Sadeh #include <linux/ceph/messenger.h> 183d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 193d14c5d2SYehuda Sadeh #include <linux/ceph/auth.h> 203d14c5d2SYehuda Sadeh #include <linux/ceph/pagelist.h> 213d14c5d2SYehuda Sadeh 223d14c5d2SYehuda Sadeh #define OSD_OPREPLY_FRONT_LEN 512 233d14c5d2SYehuda Sadeh 245522ae0bSAlex Elder static struct kmem_cache *ceph_osd_request_cache; 255522ae0bSAlex Elder 263d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops; 273d14c5d2SYehuda Sadeh 283d14c5d2SYehuda Sadeh /* 293d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 303d14c5d2SYehuda Sadeh * 313d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 323d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 333d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 343d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 353d14c5d2SYehuda Sadeh * access to storage. 363d14c5d2SYehuda Sadeh * 373d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 383d14c5d2SYehuda Sadeh * are described by the osd map. 393d14c5d2SYehuda Sadeh * 403d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 413d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 423d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 433d14c5d2SYehuda Sadeh * channel with an OSD is reset. 443d14c5d2SYehuda Sadeh */ 453d14c5d2SYehuda Sadeh 465aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req); 475aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req); 48922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 49922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq); 50922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 51922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq); 525aea3dcdSIlya Dryomov 535aea3dcdSIlya Dryomov #if 1 545aea3dcdSIlya Dryomov static inline bool rwsem_is_wrlocked(struct rw_semaphore *sem) 555aea3dcdSIlya Dryomov { 565aea3dcdSIlya Dryomov bool wrlocked = true; 575aea3dcdSIlya Dryomov 585aea3dcdSIlya Dryomov if (unlikely(down_read_trylock(sem))) { 595aea3dcdSIlya Dryomov wrlocked = false; 605aea3dcdSIlya Dryomov up_read(sem); 615aea3dcdSIlya Dryomov } 625aea3dcdSIlya Dryomov 635aea3dcdSIlya Dryomov return wrlocked; 645aea3dcdSIlya Dryomov } 655aea3dcdSIlya Dryomov static inline void verify_osdc_locked(struct ceph_osd_client *osdc) 665aea3dcdSIlya Dryomov { 675aea3dcdSIlya Dryomov WARN_ON(!rwsem_is_locked(&osdc->lock)); 685aea3dcdSIlya Dryomov } 695aea3dcdSIlya Dryomov static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) 705aea3dcdSIlya Dryomov { 715aea3dcdSIlya Dryomov WARN_ON(!rwsem_is_wrlocked(&osdc->lock)); 725aea3dcdSIlya Dryomov } 735aea3dcdSIlya Dryomov static inline void verify_osd_locked(struct ceph_osd *osd) 745aea3dcdSIlya Dryomov { 755aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 765aea3dcdSIlya Dryomov 775aea3dcdSIlya Dryomov WARN_ON(!(mutex_is_locked(&osd->lock) && 785aea3dcdSIlya Dryomov rwsem_is_locked(&osdc->lock)) && 795aea3dcdSIlya Dryomov !rwsem_is_wrlocked(&osdc->lock)); 805aea3dcdSIlya Dryomov } 81922dab61SIlya Dryomov static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) 82922dab61SIlya Dryomov { 83922dab61SIlya Dryomov WARN_ON(!mutex_is_locked(&lreq->lock)); 84922dab61SIlya Dryomov } 855aea3dcdSIlya Dryomov #else 865aea3dcdSIlya Dryomov static inline void verify_osdc_locked(struct ceph_osd_client *osdc) { } 875aea3dcdSIlya Dryomov static inline void verify_osdc_wrlocked(struct ceph_osd_client *osdc) { } 885aea3dcdSIlya Dryomov static inline void verify_osd_locked(struct ceph_osd *osd) { } 89922dab61SIlya Dryomov static inline void verify_lreq_locked(struct ceph_osd_linger_request *lreq) { } 905aea3dcdSIlya Dryomov #endif 915aea3dcdSIlya Dryomov 923d14c5d2SYehuda Sadeh /* 933d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 943d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 953d14c5d2SYehuda Sadeh * object boundary. 963d14c5d2SYehuda Sadeh * 973d14c5d2SYehuda Sadeh * fill osd op in request message. 983d14c5d2SYehuda Sadeh */ 99dbe0fc41SAlex Elder static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 100a19dadfbSAlex Elder u64 *objnum, u64 *objoff, u64 *objlen) 1013d14c5d2SYehuda Sadeh { 10260e56f13SAlex Elder u64 orig_len = *plen; 103d63b77f4SSage Weil int r; 1043d14c5d2SYehuda Sadeh 10560e56f13SAlex Elder /* object extent? */ 10675d1c941SAlex Elder r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, 10775d1c941SAlex Elder objoff, objlen); 108d63b77f4SSage Weil if (r < 0) 109d63b77f4SSage Weil return r; 11075d1c941SAlex Elder if (*objlen < orig_len) { 11175d1c941SAlex Elder *plen = *objlen; 11260e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 11360e56f13SAlex Elder orig_len - *plen, off, *plen); 11460e56f13SAlex Elder } 11560e56f13SAlex Elder 11675d1c941SAlex Elder dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); 1173d14c5d2SYehuda Sadeh 1183ff5f385SAlex Elder return 0; 1193d14c5d2SYehuda Sadeh } 1203d14c5d2SYehuda Sadeh 121c54d47bfSAlex Elder static void ceph_osd_data_init(struct ceph_osd_data *osd_data) 122c54d47bfSAlex Elder { 123c54d47bfSAlex Elder memset(osd_data, 0, sizeof (*osd_data)); 124c54d47bfSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_NONE; 125c54d47bfSAlex Elder } 126c54d47bfSAlex Elder 127a4ce40a9SAlex Elder static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, 12843bfe5deSAlex Elder struct page **pages, u64 length, u32 alignment, 12943bfe5deSAlex Elder bool pages_from_pool, bool own_pages) 13043bfe5deSAlex Elder { 13143bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 13243bfe5deSAlex Elder osd_data->pages = pages; 13343bfe5deSAlex Elder osd_data->length = length; 13443bfe5deSAlex Elder osd_data->alignment = alignment; 13543bfe5deSAlex Elder osd_data->pages_from_pool = pages_from_pool; 13643bfe5deSAlex Elder osd_data->own_pages = own_pages; 13743bfe5deSAlex Elder } 13843bfe5deSAlex Elder 139a4ce40a9SAlex Elder static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, 14043bfe5deSAlex Elder struct ceph_pagelist *pagelist) 14143bfe5deSAlex Elder { 14243bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; 14343bfe5deSAlex Elder osd_data->pagelist = pagelist; 14443bfe5deSAlex Elder } 14543bfe5deSAlex Elder 14643bfe5deSAlex Elder #ifdef CONFIG_BLOCK 147a4ce40a9SAlex Elder static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, 14843bfe5deSAlex Elder struct bio *bio, size_t bio_length) 14943bfe5deSAlex Elder { 15043bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_BIO; 15143bfe5deSAlex Elder osd_data->bio = bio; 15243bfe5deSAlex Elder osd_data->bio_length = bio_length; 15343bfe5deSAlex Elder } 15443bfe5deSAlex Elder #endif /* CONFIG_BLOCK */ 15543bfe5deSAlex Elder 156863c7eb5SAlex Elder #define osd_req_op_data(oreq, whch, typ, fld) \ 157863c7eb5SAlex Elder ({ \ 1588a703a38SIoana Ciornei struct ceph_osd_request *__oreq = (oreq); \ 1598a703a38SIoana Ciornei unsigned int __whch = (whch); \ 1608a703a38SIoana Ciornei BUG_ON(__whch >= __oreq->r_num_ops); \ 1618a703a38SIoana Ciornei &__oreq->r_ops[__whch].typ.fld; \ 162863c7eb5SAlex Elder }) 163863c7eb5SAlex Elder 16449719778SAlex Elder static struct ceph_osd_data * 16549719778SAlex Elder osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) 16649719778SAlex Elder { 16749719778SAlex Elder BUG_ON(which >= osd_req->r_num_ops); 16849719778SAlex Elder 16949719778SAlex Elder return &osd_req->r_ops[which].raw_data_in; 17049719778SAlex Elder } 17149719778SAlex Elder 172a4ce40a9SAlex Elder struct ceph_osd_data * 173a4ce40a9SAlex Elder osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, 174406e2c9fSAlex Elder unsigned int which) 175a4ce40a9SAlex Elder { 176863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, extent, osd_data); 177a4ce40a9SAlex Elder } 178a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data); 179a4ce40a9SAlex Elder 18049719778SAlex Elder void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, 18149719778SAlex Elder unsigned int which, struct page **pages, 18249719778SAlex Elder u64 length, u32 alignment, 18349719778SAlex Elder bool pages_from_pool, bool own_pages) 18449719778SAlex Elder { 18549719778SAlex Elder struct ceph_osd_data *osd_data; 18649719778SAlex Elder 18749719778SAlex Elder osd_data = osd_req_op_raw_data_in(osd_req, which); 18849719778SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 18949719778SAlex Elder pages_from_pool, own_pages); 19049719778SAlex Elder } 19149719778SAlex Elder EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); 19249719778SAlex Elder 193a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, 194406e2c9fSAlex Elder unsigned int which, struct page **pages, 195406e2c9fSAlex Elder u64 length, u32 alignment, 196a4ce40a9SAlex Elder bool pages_from_pool, bool own_pages) 197a4ce40a9SAlex Elder { 198a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 199a4ce40a9SAlex Elder 200863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 201a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 202a4ce40a9SAlex Elder pages_from_pool, own_pages); 203a4ce40a9SAlex Elder } 204a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); 205a4ce40a9SAlex Elder 206a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, 207406e2c9fSAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 208a4ce40a9SAlex Elder { 209a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 210a4ce40a9SAlex Elder 211863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 212a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 213a4ce40a9SAlex Elder } 214a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); 215a4ce40a9SAlex Elder 216a4ce40a9SAlex Elder #ifdef CONFIG_BLOCK 217a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, 218406e2c9fSAlex Elder unsigned int which, struct bio *bio, size_t bio_length) 219a4ce40a9SAlex Elder { 220a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 221863c7eb5SAlex Elder 222863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 223a4ce40a9SAlex Elder ceph_osd_data_bio_init(osd_data, bio, bio_length); 224a4ce40a9SAlex Elder } 225a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); 226a4ce40a9SAlex Elder #endif /* CONFIG_BLOCK */ 227a4ce40a9SAlex Elder 228a4ce40a9SAlex Elder static void osd_req_op_cls_request_info_pagelist( 229a4ce40a9SAlex Elder struct ceph_osd_request *osd_req, 230a4ce40a9SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 231a4ce40a9SAlex Elder { 232a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 233a4ce40a9SAlex Elder 234863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_info); 235a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 236a4ce40a9SAlex Elder } 237a4ce40a9SAlex Elder 23804017e29SAlex Elder void osd_req_op_cls_request_data_pagelist( 23904017e29SAlex Elder struct ceph_osd_request *osd_req, 24004017e29SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 24104017e29SAlex Elder { 24204017e29SAlex Elder struct ceph_osd_data *osd_data; 24304017e29SAlex Elder 244863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 24504017e29SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 246bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += pagelist->length; 247bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += pagelist->length; 24804017e29SAlex Elder } 24904017e29SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); 25004017e29SAlex Elder 2516c57b554SAlex Elder void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, 2526c57b554SAlex Elder unsigned int which, struct page **pages, u64 length, 2536c57b554SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 2546c57b554SAlex Elder { 2556c57b554SAlex Elder struct ceph_osd_data *osd_data; 2566c57b554SAlex Elder 2576c57b554SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 2586c57b554SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 2596c57b554SAlex Elder pages_from_pool, own_pages); 260bb873b53SIlya Dryomov osd_req->r_ops[which].cls.indata_len += length; 261bb873b53SIlya Dryomov osd_req->r_ops[which].indata_len += length; 2626c57b554SAlex Elder } 2636c57b554SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); 2646c57b554SAlex Elder 265a4ce40a9SAlex Elder void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, 266a4ce40a9SAlex Elder unsigned int which, struct page **pages, u64 length, 267a4ce40a9SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 268a4ce40a9SAlex Elder { 269a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 270a4ce40a9SAlex Elder 271863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, response_data); 272a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 273a4ce40a9SAlex Elder pages_from_pool, own_pages); 274a4ce40a9SAlex Elder } 275a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); 276a4ce40a9SAlex Elder 27723c08a9cSAlex Elder static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) 27823c08a9cSAlex Elder { 27923c08a9cSAlex Elder switch (osd_data->type) { 28023c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_NONE: 28123c08a9cSAlex Elder return 0; 28223c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGES: 28323c08a9cSAlex Elder return osd_data->length; 28423c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGELIST: 28523c08a9cSAlex Elder return (u64)osd_data->pagelist->length; 28623c08a9cSAlex Elder #ifdef CONFIG_BLOCK 28723c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_BIO: 28823c08a9cSAlex Elder return (u64)osd_data->bio_length; 28923c08a9cSAlex Elder #endif /* CONFIG_BLOCK */ 29023c08a9cSAlex Elder default: 29123c08a9cSAlex Elder WARN(true, "unrecognized data type %d\n", (int)osd_data->type); 29223c08a9cSAlex Elder return 0; 29323c08a9cSAlex Elder } 29423c08a9cSAlex Elder } 29523c08a9cSAlex Elder 296c54d47bfSAlex Elder static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 297c54d47bfSAlex Elder { 2985476492fSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { 299c54d47bfSAlex Elder int num_pages; 300c54d47bfSAlex Elder 301c54d47bfSAlex Elder num_pages = calc_pages_for((u64)osd_data->alignment, 302c54d47bfSAlex Elder (u64)osd_data->length); 303c54d47bfSAlex Elder ceph_release_page_vector(osd_data->pages, num_pages); 304c54d47bfSAlex Elder } 3055476492fSAlex Elder ceph_osd_data_init(osd_data); 3065476492fSAlex Elder } 3075476492fSAlex Elder 3085476492fSAlex Elder static void osd_req_op_data_release(struct ceph_osd_request *osd_req, 3095476492fSAlex Elder unsigned int which) 3105476492fSAlex Elder { 3115476492fSAlex Elder struct ceph_osd_req_op *op; 3125476492fSAlex Elder 3135476492fSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 3145476492fSAlex Elder op = &osd_req->r_ops[which]; 3155476492fSAlex Elder 3165476492fSAlex Elder switch (op->op) { 3175476492fSAlex Elder case CEPH_OSD_OP_READ: 3185476492fSAlex Elder case CEPH_OSD_OP_WRITE: 319e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 3205476492fSAlex Elder ceph_osd_data_release(&op->extent.osd_data); 3215476492fSAlex Elder break; 3225476492fSAlex Elder case CEPH_OSD_OP_CALL: 3235476492fSAlex Elder ceph_osd_data_release(&op->cls.request_info); 32404017e29SAlex Elder ceph_osd_data_release(&op->cls.request_data); 3255476492fSAlex Elder ceph_osd_data_release(&op->cls.response_data); 3265476492fSAlex Elder break; 327d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 328d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 329d74b50beSYan, Zheng ceph_osd_data_release(&op->xattr.osd_data); 330d74b50beSYan, Zheng break; 33166ba609fSYan, Zheng case CEPH_OSD_OP_STAT: 33266ba609fSYan, Zheng ceph_osd_data_release(&op->raw_data_in); 33366ba609fSYan, Zheng break; 334922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 335922dab61SIlya Dryomov ceph_osd_data_release(&op->notify_ack.request_data); 336922dab61SIlya Dryomov break; 33719079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 33819079203SIlya Dryomov ceph_osd_data_release(&op->notify.request_data); 33919079203SIlya Dryomov ceph_osd_data_release(&op->notify.response_data); 34019079203SIlya Dryomov break; 3415476492fSAlex Elder default: 3425476492fSAlex Elder break; 3435476492fSAlex Elder } 344c54d47bfSAlex Elder } 345c54d47bfSAlex Elder 3463d14c5d2SYehuda Sadeh /* 34763244fa1SIlya Dryomov * Assumes @t is zero-initialized. 34863244fa1SIlya Dryomov */ 34963244fa1SIlya Dryomov static void target_init(struct ceph_osd_request_target *t) 35063244fa1SIlya Dryomov { 35163244fa1SIlya Dryomov ceph_oid_init(&t->base_oid); 35263244fa1SIlya Dryomov ceph_oloc_init(&t->base_oloc); 35363244fa1SIlya Dryomov ceph_oid_init(&t->target_oid); 35463244fa1SIlya Dryomov ceph_oloc_init(&t->target_oloc); 35563244fa1SIlya Dryomov 35663244fa1SIlya Dryomov ceph_osds_init(&t->acting); 35763244fa1SIlya Dryomov ceph_osds_init(&t->up); 35863244fa1SIlya Dryomov t->size = -1; 35963244fa1SIlya Dryomov t->min_size = -1; 36063244fa1SIlya Dryomov 36163244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 36263244fa1SIlya Dryomov } 36363244fa1SIlya Dryomov 364922dab61SIlya Dryomov static void target_copy(struct ceph_osd_request_target *dest, 365922dab61SIlya Dryomov const struct ceph_osd_request_target *src) 366922dab61SIlya Dryomov { 367922dab61SIlya Dryomov ceph_oid_copy(&dest->base_oid, &src->base_oid); 368922dab61SIlya Dryomov ceph_oloc_copy(&dest->base_oloc, &src->base_oloc); 369922dab61SIlya Dryomov ceph_oid_copy(&dest->target_oid, &src->target_oid); 370922dab61SIlya Dryomov ceph_oloc_copy(&dest->target_oloc, &src->target_oloc); 371922dab61SIlya Dryomov 372922dab61SIlya Dryomov dest->pgid = src->pgid; /* struct */ 373922dab61SIlya Dryomov dest->pg_num = src->pg_num; 374922dab61SIlya Dryomov dest->pg_num_mask = src->pg_num_mask; 375922dab61SIlya Dryomov ceph_osds_copy(&dest->acting, &src->acting); 376922dab61SIlya Dryomov ceph_osds_copy(&dest->up, &src->up); 377922dab61SIlya Dryomov dest->size = src->size; 378922dab61SIlya Dryomov dest->min_size = src->min_size; 379922dab61SIlya Dryomov dest->sort_bitwise = src->sort_bitwise; 380922dab61SIlya Dryomov 381922dab61SIlya Dryomov dest->flags = src->flags; 382922dab61SIlya Dryomov dest->paused = src->paused; 383922dab61SIlya Dryomov 384922dab61SIlya Dryomov dest->osd = src->osd; 385922dab61SIlya Dryomov } 386922dab61SIlya Dryomov 38763244fa1SIlya Dryomov static void target_destroy(struct ceph_osd_request_target *t) 38863244fa1SIlya Dryomov { 38963244fa1SIlya Dryomov ceph_oid_destroy(&t->base_oid); 39063244fa1SIlya Dryomov ceph_oid_destroy(&t->target_oid); 39163244fa1SIlya Dryomov } 39263244fa1SIlya Dryomov 39363244fa1SIlya Dryomov /* 3943d14c5d2SYehuda Sadeh * requests 3953d14c5d2SYehuda Sadeh */ 3963540bfdbSIlya Dryomov static void request_release_checks(struct ceph_osd_request *req) 3973540bfdbSIlya Dryomov { 3983540bfdbSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 3993540bfdbSIlya Dryomov WARN_ON(!list_empty(&req->r_unsafe_item)); 4003540bfdbSIlya Dryomov WARN_ON(req->r_osd); 4013540bfdbSIlya Dryomov } 4023540bfdbSIlya Dryomov 4039e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 4043d14c5d2SYehuda Sadeh { 4059e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 4069e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 4075476492fSAlex Elder unsigned int which; 4083d14c5d2SYehuda Sadeh 4099e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 4109e94af20SIlya Dryomov req->r_request, req->r_reply); 4113540bfdbSIlya Dryomov request_release_checks(req); 4129e94af20SIlya Dryomov 4133d14c5d2SYehuda Sadeh if (req->r_request) 4143d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 4155aea3dcdSIlya Dryomov if (req->r_reply) 416ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 4170fff87ecSAlex Elder 4185476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 4195476492fSAlex Elder osd_req_op_data_release(req, which); 4200fff87ecSAlex Elder 421a66dd383SIlya Dryomov target_destroy(&req->r_t); 4223d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 423d30291b9SIlya Dryomov 4243d14c5d2SYehuda Sadeh if (req->r_mempool) 4253d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 4263f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 4275522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 4283f1af42aSIlya Dryomov else 4293f1af42aSIlya Dryomov kfree(req); 4303d14c5d2SYehuda Sadeh } 4319e94af20SIlya Dryomov 4329e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 4339e94af20SIlya Dryomov { 4349e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 4359e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 4369e94af20SIlya Dryomov kref_get(&req->r_kref); 4379e94af20SIlya Dryomov } 4389e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 4399e94af20SIlya Dryomov 4409e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 4419e94af20SIlya Dryomov { 4423ed97d63SIlya Dryomov if (req) { 4439e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 4449e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 4459e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 4469e94af20SIlya Dryomov } 4473ed97d63SIlya Dryomov } 4489e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 4493d14c5d2SYehuda Sadeh 4503540bfdbSIlya Dryomov static void request_init(struct ceph_osd_request *req) 4513540bfdbSIlya Dryomov { 4523540bfdbSIlya Dryomov /* req only, each op is zeroed in _osd_req_op_init() */ 4533540bfdbSIlya Dryomov memset(req, 0, sizeof(*req)); 4543540bfdbSIlya Dryomov 4553540bfdbSIlya Dryomov kref_init(&req->r_kref); 4563540bfdbSIlya Dryomov init_completion(&req->r_completion); 4573540bfdbSIlya Dryomov init_completion(&req->r_safe_completion); 4583540bfdbSIlya Dryomov RB_CLEAR_NODE(&req->r_node); 4593540bfdbSIlya Dryomov INIT_LIST_HEAD(&req->r_unsafe_item); 4603540bfdbSIlya Dryomov 4613540bfdbSIlya Dryomov target_init(&req->r_t); 4623540bfdbSIlya Dryomov } 4633540bfdbSIlya Dryomov 464922dab61SIlya Dryomov /* 465922dab61SIlya Dryomov * This is ugly, but it allows us to reuse linger registration and ping 466922dab61SIlya Dryomov * requests, keeping the structure of the code around send_linger{_ping}() 467922dab61SIlya Dryomov * reasonable. Setting up a min_nr=2 mempool for each linger request 468922dab61SIlya Dryomov * and dealing with copying ops (this blasts req only, watch op remains 469922dab61SIlya Dryomov * intact) isn't any better. 470922dab61SIlya Dryomov */ 471922dab61SIlya Dryomov static void request_reinit(struct ceph_osd_request *req) 472922dab61SIlya Dryomov { 473922dab61SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 474922dab61SIlya Dryomov bool mempool = req->r_mempool; 475922dab61SIlya Dryomov unsigned int num_ops = req->r_num_ops; 476922dab61SIlya Dryomov u64 snapid = req->r_snapid; 477922dab61SIlya Dryomov struct ceph_snap_context *snapc = req->r_snapc; 478922dab61SIlya Dryomov bool linger = req->r_linger; 479922dab61SIlya Dryomov struct ceph_msg *request_msg = req->r_request; 480922dab61SIlya Dryomov struct ceph_msg *reply_msg = req->r_reply; 481922dab61SIlya Dryomov 482922dab61SIlya Dryomov dout("%s req %p\n", __func__, req); 483922dab61SIlya Dryomov WARN_ON(atomic_read(&req->r_kref.refcount) != 1); 484922dab61SIlya Dryomov request_release_checks(req); 485922dab61SIlya Dryomov 486922dab61SIlya Dryomov WARN_ON(atomic_read(&request_msg->kref.refcount) != 1); 487922dab61SIlya Dryomov WARN_ON(atomic_read(&reply_msg->kref.refcount) != 1); 488922dab61SIlya Dryomov target_destroy(&req->r_t); 489922dab61SIlya Dryomov 490922dab61SIlya Dryomov request_init(req); 491922dab61SIlya Dryomov req->r_osdc = osdc; 492922dab61SIlya Dryomov req->r_mempool = mempool; 493922dab61SIlya Dryomov req->r_num_ops = num_ops; 494922dab61SIlya Dryomov req->r_snapid = snapid; 495922dab61SIlya Dryomov req->r_snapc = snapc; 496922dab61SIlya Dryomov req->r_linger = linger; 497922dab61SIlya Dryomov req->r_request = request_msg; 498922dab61SIlya Dryomov req->r_reply = reply_msg; 499922dab61SIlya Dryomov } 500922dab61SIlya Dryomov 5013d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 5023d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 5031b83bef2SSage Weil unsigned int num_ops, 5043d14c5d2SYehuda Sadeh bool use_mempool, 50554a54007SAlex Elder gfp_t gfp_flags) 5063d14c5d2SYehuda Sadeh { 5073d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 5083d14c5d2SYehuda Sadeh 5093d14c5d2SYehuda Sadeh if (use_mempool) { 5103f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 5113d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 5123f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 5133f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 5143d14c5d2SYehuda Sadeh } else { 5153f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 5163f1af42aSIlya Dryomov req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), 5173f1af42aSIlya Dryomov gfp_flags); 5183d14c5d2SYehuda Sadeh } 5193f1af42aSIlya Dryomov if (unlikely(!req)) 5203d14c5d2SYehuda Sadeh return NULL; 5213d14c5d2SYehuda Sadeh 5223540bfdbSIlya Dryomov request_init(req); 5233d14c5d2SYehuda Sadeh req->r_osdc = osdc; 5243d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 52579528734SAlex Elder req->r_num_ops = num_ops; 52684127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 52784127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 5283d14c5d2SYehuda Sadeh 52913d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 53013d1ad16SIlya Dryomov return req; 5313f1af42aSIlya Dryomov } 53213d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 5333f1af42aSIlya Dryomov 53413d1ad16SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 53513d1ad16SIlya Dryomov { 53613d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 53713d1ad16SIlya Dryomov struct ceph_msg *msg; 53813d1ad16SIlya Dryomov int msg_size; 5393d14c5d2SYehuda Sadeh 540d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 541d30291b9SIlya Dryomov 54213d1ad16SIlya Dryomov /* create request message */ 543ae458f5aSIlya Dryomov msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */ 544ae458f5aSIlya Dryomov msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */ 545ae458f5aSIlya Dryomov msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 546ae458f5aSIlya Dryomov msg_size += 1 + 8 + 4 + 4; /* pgid */ 54713d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 54813d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 549ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 550ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 55113d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 552ae458f5aSIlya Dryomov msg_size += 4; /* retry_attempt */ 553ae458f5aSIlya Dryomov 55413d1ad16SIlya Dryomov if (req->r_mempool) 5553d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 5563d14c5d2SYehuda Sadeh else 55713d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); 55813d1ad16SIlya Dryomov if (!msg) 55913d1ad16SIlya Dryomov return -ENOMEM; 5603d14c5d2SYehuda Sadeh 5613d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 5623d14c5d2SYehuda Sadeh req->r_request = msg; 5633d14c5d2SYehuda Sadeh 56413d1ad16SIlya Dryomov /* create reply message */ 56513d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 566711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 567711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 56813d1ad16SIlya Dryomov 56913d1ad16SIlya Dryomov if (req->r_mempool) 57013d1ad16SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 57113d1ad16SIlya Dryomov else 57213d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); 57313d1ad16SIlya Dryomov if (!msg) 57413d1ad16SIlya Dryomov return -ENOMEM; 57513d1ad16SIlya Dryomov 57613d1ad16SIlya Dryomov req->r_reply = msg; 57713d1ad16SIlya Dryomov 57813d1ad16SIlya Dryomov return 0; 57913d1ad16SIlya Dryomov } 58013d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 5813d14c5d2SYehuda Sadeh 582a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 583a8dd0a37SAlex Elder { 584a8dd0a37SAlex Elder switch (opcode) { 58570b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 58670b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 58770b5bfa3SIlya Dryomov #undef GENERATE_CASE 588a8dd0a37SAlex Elder default: 589a8dd0a37SAlex Elder return false; 590a8dd0a37SAlex Elder } 591a8dd0a37SAlex Elder } 592a8dd0a37SAlex Elder 59333803f33SAlex Elder /* 59433803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 59533803f33SAlex Elder * other information associated with them. It also serves as a 59633803f33SAlex Elder * common init routine for all the other init functions, below. 59733803f33SAlex Elder */ 598c99d2d4aSAlex Elder static struct ceph_osd_req_op * 59949719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 600144cba14SYan, Zheng u16 opcode, u32 flags) 60133803f33SAlex Elder { 602c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 603c99d2d4aSAlex Elder 604c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 60533803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 60633803f33SAlex Elder 607c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 60833803f33SAlex Elder memset(op, 0, sizeof (*op)); 60933803f33SAlex Elder op->op = opcode; 610144cba14SYan, Zheng op->flags = flags; 611c99d2d4aSAlex Elder 612c99d2d4aSAlex Elder return op; 61333803f33SAlex Elder } 61433803f33SAlex Elder 61549719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 616144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 61749719778SAlex Elder { 618144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 61949719778SAlex Elder } 62049719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 62149719778SAlex Elder 622c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 623c99d2d4aSAlex Elder unsigned int which, u16 opcode, 62433803f33SAlex Elder u64 offset, u64 length, 62533803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 62633803f33SAlex Elder { 627144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 628144cba14SYan, Zheng opcode, 0); 62933803f33SAlex Elder size_t payload_len = 0; 63033803f33SAlex Elder 631ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 632e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 633e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 63433803f33SAlex Elder 63533803f33SAlex Elder op->extent.offset = offset; 63633803f33SAlex Elder op->extent.length = length; 63733803f33SAlex Elder op->extent.truncate_size = truncate_size; 63833803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 639e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 64033803f33SAlex Elder payload_len += length; 64133803f33SAlex Elder 642de2aa102SIlya Dryomov op->indata_len = payload_len; 64333803f33SAlex Elder } 64433803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 64533803f33SAlex Elder 646c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 647c99d2d4aSAlex Elder unsigned int which, u64 length) 648e5975c7cSAlex Elder { 649c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 650c99d2d4aSAlex Elder u64 previous; 651c99d2d4aSAlex Elder 652c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 653c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 654c99d2d4aSAlex Elder previous = op->extent.length; 655e5975c7cSAlex Elder 656e5975c7cSAlex Elder if (length == previous) 657e5975c7cSAlex Elder return; /* Nothing to do */ 658e5975c7cSAlex Elder BUG_ON(length > previous); 659e5975c7cSAlex Elder 660e5975c7cSAlex Elder op->extent.length = length; 661de2aa102SIlya Dryomov op->indata_len -= previous - length; 662e5975c7cSAlex Elder } 663e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 664e5975c7cSAlex Elder 6652c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 6662c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 6672c63f49aSYan, Zheng { 6682c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 6692c63f49aSYan, Zheng 6702c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 6712c63f49aSYan, Zheng 6722c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 6732c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 6742c63f49aSYan, Zheng /* dup previous one */ 6752c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 6762c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 6772c63f49aSYan, Zheng op->extent = prev_op->extent; 6782c63f49aSYan, Zheng /* adjust offset */ 6792c63f49aSYan, Zheng op->extent.offset += offset_inc; 6802c63f49aSYan, Zheng op->extent.length -= offset_inc; 6812c63f49aSYan, Zheng 6822c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 6832c63f49aSYan, Zheng op->indata_len -= offset_inc; 6842c63f49aSYan, Zheng } 6852c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 6862c63f49aSYan, Zheng 687c99d2d4aSAlex Elder void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 68804017e29SAlex Elder u16 opcode, const char *class, const char *method) 68933803f33SAlex Elder { 690144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 691144cba14SYan, Zheng opcode, 0); 6925f562df5SAlex Elder struct ceph_pagelist *pagelist; 69333803f33SAlex Elder size_t payload_len = 0; 69433803f33SAlex Elder size_t size; 69533803f33SAlex Elder 69633803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 69733803f33SAlex Elder 6985f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 6995f562df5SAlex Elder BUG_ON(!pagelist); 7005f562df5SAlex Elder ceph_pagelist_init(pagelist); 7015f562df5SAlex Elder 70233803f33SAlex Elder op->cls.class_name = class; 70333803f33SAlex Elder size = strlen(class); 70433803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 70533803f33SAlex Elder op->cls.class_len = size; 7065f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 70733803f33SAlex Elder payload_len += size; 70833803f33SAlex Elder 70933803f33SAlex Elder op->cls.method_name = method; 71033803f33SAlex Elder size = strlen(method); 71133803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 71233803f33SAlex Elder op->cls.method_len = size; 7135f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 71433803f33SAlex Elder payload_len += size; 71533803f33SAlex Elder 716a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 7175f562df5SAlex Elder 718de2aa102SIlya Dryomov op->indata_len = payload_len; 71933803f33SAlex Elder } 72033803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 7218c042b0dSAlex Elder 722d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 723d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 724d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 725d74b50beSYan, Zheng { 726144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 727144cba14SYan, Zheng opcode, 0); 728d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 729d74b50beSYan, Zheng size_t payload_len; 730d74b50beSYan, Zheng 731d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 732d74b50beSYan, Zheng 733d74b50beSYan, Zheng pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); 734d74b50beSYan, Zheng if (!pagelist) 735d74b50beSYan, Zheng return -ENOMEM; 736d74b50beSYan, Zheng 737d74b50beSYan, Zheng ceph_pagelist_init(pagelist); 738d74b50beSYan, Zheng 739d74b50beSYan, Zheng payload_len = strlen(name); 740d74b50beSYan, Zheng op->xattr.name_len = payload_len; 741d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 742d74b50beSYan, Zheng 743d74b50beSYan, Zheng op->xattr.value_len = size; 744d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 745d74b50beSYan, Zheng payload_len += size; 746d74b50beSYan, Zheng 747d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 748d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 749d74b50beSYan, Zheng 750d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 751de2aa102SIlya Dryomov op->indata_len = payload_len; 752d74b50beSYan, Zheng return 0; 753d74b50beSYan, Zheng } 754d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 755d74b50beSYan, Zheng 756922dab61SIlya Dryomov /* 757922dab61SIlya Dryomov * @watch_opcode: CEPH_OSD_WATCH_OP_* 758922dab61SIlya Dryomov */ 759922dab61SIlya Dryomov static void osd_req_op_watch_init(struct ceph_osd_request *req, int which, 760922dab61SIlya Dryomov u64 cookie, u8 watch_opcode) 76133803f33SAlex Elder { 762922dab61SIlya Dryomov struct ceph_osd_req_op *op; 76333803f33SAlex Elder 764922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_WATCH, 0); 76533803f33SAlex Elder op->watch.cookie = cookie; 766922dab61SIlya Dryomov op->watch.op = watch_opcode; 767922dab61SIlya Dryomov op->watch.gen = 0; 76833803f33SAlex Elder } 76933803f33SAlex Elder 770c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 771c647b8a8SIlya Dryomov unsigned int which, 772c647b8a8SIlya Dryomov u64 expected_object_size, 773c647b8a8SIlya Dryomov u64 expected_write_size) 774c647b8a8SIlya Dryomov { 775c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 776144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 777144cba14SYan, Zheng 0); 778c647b8a8SIlya Dryomov 779c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 780c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 781c647b8a8SIlya Dryomov 782c647b8a8SIlya Dryomov /* 783c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 784c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 785c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 786c647b8a8SIlya Dryomov */ 787c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 788c647b8a8SIlya Dryomov } 789c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 790c647b8a8SIlya Dryomov 79190af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 792ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 793ec9123c5SAlex Elder { 794ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 795ec9123c5SAlex Elder 796ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 797ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 798ec9123c5SAlex Elder if (length) 79990af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 800ec9123c5SAlex Elder length, osd_data->alignment); 801ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 802ec9123c5SAlex Elder BUG_ON(!length); 80390af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 804ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 805ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 80690af3602SAlex Elder ceph_msg_data_add_bio(msg, osd_data->bio, length); 807ec9123c5SAlex Elder #endif 808ec9123c5SAlex Elder } else { 809ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 810ec9123c5SAlex Elder } 811ec9123c5SAlex Elder } 812ec9123c5SAlex Elder 813bb873b53SIlya Dryomov static u32 osd_req_encode_op(struct ceph_osd_op *dst, 814bb873b53SIlya Dryomov const struct ceph_osd_req_op *src) 8153d14c5d2SYehuda Sadeh { 816a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 817a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 818a8dd0a37SAlex Elder 819a8dd0a37SAlex Elder return 0; 820a8dd0a37SAlex Elder } 8213d14c5d2SYehuda Sadeh 822065a68f9SAlex Elder switch (src->op) { 823fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 824fbfab539SAlex Elder break; 8253d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 8263d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 827e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 828ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 829ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 830175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 831175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 8323d14c5d2SYehuda Sadeh dst->extent.truncate_size = 8333d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 8343d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 8353d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 8363d14c5d2SYehuda Sadeh break; 8373d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 8383d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 8393d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 840bb873b53SIlya Dryomov dst->cls.indata_len = cpu_to_le32(src->cls.indata_len); 8413d14c5d2SYehuda Sadeh break; 8423d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 8433d14c5d2SYehuda Sadeh break; 844a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 845a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 846922dab61SIlya Dryomov dst->watch.ver = cpu_to_le64(0); 847922dab61SIlya Dryomov dst->watch.op = src->watch.op; 848922dab61SIlya Dryomov dst->watch.gen = cpu_to_le32(src->watch.gen); 849922dab61SIlya Dryomov break; 850922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 851a40c4f10SYehuda Sadeh break; 85219079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 85319079203SIlya Dryomov dst->notify.cookie = cpu_to_le64(src->notify.cookie); 85419079203SIlya Dryomov break; 855c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 856c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 857c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 858c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 859c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 860c647b8a8SIlya Dryomov break; 861d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 862d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 863d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 864d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 865d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 866d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 867d74b50beSYan, Zheng break; 868864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 869864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 870864e9197SYan, Zheng break; 8713d14c5d2SYehuda Sadeh default: 8724c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 8738f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 8744c46459cSAlex Elder WARN_ON(1); 875a8dd0a37SAlex Elder 876a8dd0a37SAlex Elder return 0; 8773d14c5d2SYehuda Sadeh } 8787b25bf5fSIlya Dryomov 879a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 8807b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 881de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 882175face2SAlex Elder 883bb873b53SIlya Dryomov return src->indata_len; 8843d14c5d2SYehuda Sadeh } 8853d14c5d2SYehuda Sadeh 8863d14c5d2SYehuda Sadeh /* 8873d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 8883d14c5d2SYehuda Sadeh * extent as needed. 8893d14c5d2SYehuda Sadeh * 8903d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 8913d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 8923d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 8933d14c5d2SYehuda Sadeh * 8943d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 8953d14c5d2SYehuda Sadeh * data quickly. 8963d14c5d2SYehuda Sadeh */ 8973d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 8983d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 8993d14c5d2SYehuda Sadeh struct ceph_vino vino, 900715e4cd4SYan, Zheng u64 off, u64 *plen, 901715e4cd4SYan, Zheng unsigned int which, int num_ops, 9023d14c5d2SYehuda Sadeh int opcode, int flags, 9033d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 9043d14c5d2SYehuda Sadeh u32 truncate_seq, 9053d14c5d2SYehuda Sadeh u64 truncate_size, 906153e5167SAlex Elder bool use_mempool) 9073d14c5d2SYehuda Sadeh { 9083d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 90975d1c941SAlex Elder u64 objnum = 0; 91075d1c941SAlex Elder u64 objoff = 0; 91175d1c941SAlex Elder u64 objlen = 0; 9126816282dSSage Weil int r; 9133d14c5d2SYehuda Sadeh 914ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 915864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 916864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 9173d14c5d2SYehuda Sadeh 918acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 919ae7ca4a3SAlex Elder GFP_NOFS); 92013d1ad16SIlya Dryomov if (!req) { 92113d1ad16SIlya Dryomov r = -ENOMEM; 92213d1ad16SIlya Dryomov goto fail; 92313d1ad16SIlya Dryomov } 92479528734SAlex Elder 9253d14c5d2SYehuda Sadeh /* calculate max write size */ 926a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 92713d1ad16SIlya Dryomov if (r) 92813d1ad16SIlya Dryomov goto fail; 929a19dadfbSAlex Elder 930864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 931144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 932864e9197SYan, Zheng } else { 933864e9197SYan, Zheng u32 object_size = le32_to_cpu(layout->fl_object_size); 934864e9197SYan, Zheng u32 object_base = off - objoff; 935ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 936d18d1e28SAlex Elder if (truncate_size <= object_base) { 937d18d1e28SAlex Elder truncate_size = 0; 938d18d1e28SAlex Elder } else { 939d18d1e28SAlex Elder truncate_size -= object_base; 940d18d1e28SAlex Elder if (truncate_size > object_size) 941d18d1e28SAlex Elder truncate_size = object_size; 942d18d1e28SAlex Elder } 943ccca4e37SYan, Zheng } 944715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 945b0270324SAlex Elder truncate_size, truncate_seq); 946864e9197SYan, Zheng } 947d18d1e28SAlex Elder 948bb873b53SIlya Dryomov req->r_flags = flags; 9493c972c95SIlya Dryomov req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); 950d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 951dbe0fc41SAlex Elder 952bb873b53SIlya Dryomov req->r_snapid = vino.snap; 953bb873b53SIlya Dryomov if (flags & CEPH_OSD_FLAG_WRITE) 954bb873b53SIlya Dryomov req->r_data_offset = off; 955bb873b53SIlya Dryomov 95613d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 95713d1ad16SIlya Dryomov if (r) 95813d1ad16SIlya Dryomov goto fail; 95913d1ad16SIlya Dryomov 9603d14c5d2SYehuda Sadeh return req; 96113d1ad16SIlya Dryomov 96213d1ad16SIlya Dryomov fail: 96313d1ad16SIlya Dryomov ceph_osdc_put_request(req); 96413d1ad16SIlya Dryomov return ERR_PTR(r); 9653d14c5d2SYehuda Sadeh } 9663d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 9673d14c5d2SYehuda Sadeh 9683d14c5d2SYehuda Sadeh /* 9693d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 9703d14c5d2SYehuda Sadeh */ 971fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 9723d14c5d2SYehuda Sadeh 9730247a0cfSIlya Dryomov static bool osd_homeless(struct ceph_osd *osd) 9740247a0cfSIlya Dryomov { 9750247a0cfSIlya Dryomov return osd->o_osd == CEPH_HOMELESS_OSD; 9760247a0cfSIlya Dryomov } 9770247a0cfSIlya Dryomov 9785aea3dcdSIlya Dryomov static bool osd_registered(struct ceph_osd *osd) 9793d14c5d2SYehuda Sadeh { 9805aea3dcdSIlya Dryomov verify_osdc_locked(osd->o_osdc); 9813d14c5d2SYehuda Sadeh 9825aea3dcdSIlya Dryomov return !RB_EMPTY_NODE(&osd->o_node); 9833d14c5d2SYehuda Sadeh } 9843d14c5d2SYehuda Sadeh 9853d14c5d2SYehuda Sadeh /* 9860247a0cfSIlya Dryomov * Assumes @osd is zero-initialized. 9870247a0cfSIlya Dryomov */ 9880247a0cfSIlya Dryomov static void osd_init(struct ceph_osd *osd) 9890247a0cfSIlya Dryomov { 9900247a0cfSIlya Dryomov atomic_set(&osd->o_ref, 1); 9910247a0cfSIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 9925aea3dcdSIlya Dryomov osd->o_requests = RB_ROOT; 993922dab61SIlya Dryomov osd->o_linger_requests = RB_ROOT; 9940247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_osd_lru); 9950247a0cfSIlya Dryomov INIT_LIST_HEAD(&osd->o_keepalive_item); 9960247a0cfSIlya Dryomov osd->o_incarnation = 1; 9975aea3dcdSIlya Dryomov mutex_init(&osd->lock); 9980247a0cfSIlya Dryomov } 9990247a0cfSIlya Dryomov 10000247a0cfSIlya Dryomov static void osd_cleanup(struct ceph_osd *osd) 10010247a0cfSIlya Dryomov { 10020247a0cfSIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&osd->o_node)); 10035aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 1004922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 10050247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_osd_lru)); 10060247a0cfSIlya Dryomov WARN_ON(!list_empty(&osd->o_keepalive_item)); 10070247a0cfSIlya Dryomov 10080247a0cfSIlya Dryomov if (osd->o_auth.authorizer) { 10090247a0cfSIlya Dryomov WARN_ON(osd_homeless(osd)); 10100247a0cfSIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 10110247a0cfSIlya Dryomov } 10120247a0cfSIlya Dryomov } 10130247a0cfSIlya Dryomov 10140247a0cfSIlya Dryomov /* 10153d14c5d2SYehuda Sadeh * Track open sessions with osds. 10163d14c5d2SYehuda Sadeh */ 1017e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 10183d14c5d2SYehuda Sadeh { 10193d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10203d14c5d2SYehuda Sadeh 10210247a0cfSIlya Dryomov WARN_ON(onum == CEPH_HOMELESS_OSD); 10220247a0cfSIlya Dryomov 10237a28f59bSIlya Dryomov osd = kzalloc(sizeof(*osd), GFP_NOIO | __GFP_NOFAIL); 10240247a0cfSIlya Dryomov osd_init(osd); 10253d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1026e10006f8SAlex Elder osd->o_osd = onum; 10273d14c5d2SYehuda Sadeh 1028b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 10293d14c5d2SYehuda Sadeh 10303d14c5d2SYehuda Sadeh return osd; 10313d14c5d2SYehuda Sadeh } 10323d14c5d2SYehuda Sadeh 10333d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 10343d14c5d2SYehuda Sadeh { 10353d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 10363d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 10373d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 10383d14c5d2SYehuda Sadeh return osd; 10393d14c5d2SYehuda Sadeh } else { 10403d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 10413d14c5d2SYehuda Sadeh return NULL; 10423d14c5d2SYehuda Sadeh } 10433d14c5d2SYehuda Sadeh } 10443d14c5d2SYehuda Sadeh 10453d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 10463d14c5d2SYehuda Sadeh { 10473d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 10483d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 1049b28ec2f3SIlya Dryomov if (atomic_dec_and_test(&osd->o_ref)) { 10500247a0cfSIlya Dryomov osd_cleanup(osd); 10513d14c5d2SYehuda Sadeh kfree(osd); 10523d14c5d2SYehuda Sadeh } 10533d14c5d2SYehuda Sadeh } 10543d14c5d2SYehuda Sadeh 1055fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1056fcd00b68SIlya Dryomov 10579dd2845cSIlya Dryomov static void __move_osd_to_lru(struct ceph_osd *osd) 10583d14c5d2SYehuda Sadeh { 10599dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 10609dd2845cSIlya Dryomov 10619dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 10623d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1063bbf37ec3SIlya Dryomov 10649dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 10653d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 10669dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 10679dd2845cSIlya Dryomov 1068a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 10693d14c5d2SYehuda Sadeh } 10703d14c5d2SYehuda Sadeh 10719dd2845cSIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd *osd) 1072bbf37ec3SIlya Dryomov { 10735aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1074922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) 10759dd2845cSIlya Dryomov __move_osd_to_lru(osd); 1076bbf37ec3SIlya Dryomov } 1077bbf37ec3SIlya Dryomov 10783d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 10793d14c5d2SYehuda Sadeh { 10809dd2845cSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 10819dd2845cSIlya Dryomov 10829dd2845cSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 10839dd2845cSIlya Dryomov 10849dd2845cSIlya Dryomov spin_lock(&osdc->osd_lru_lock); 10853d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 10863d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 10879dd2845cSIlya Dryomov spin_unlock(&osdc->osd_lru_lock); 10883d14c5d2SYehuda Sadeh } 10893d14c5d2SYehuda Sadeh 10903d14c5d2SYehuda Sadeh /* 10915aea3dcdSIlya Dryomov * Close the connection and assign any leftover requests to the 10925aea3dcdSIlya Dryomov * homeless session. 10935aea3dcdSIlya Dryomov */ 10945aea3dcdSIlya Dryomov static void close_osd(struct ceph_osd *osd) 10955aea3dcdSIlya Dryomov { 10965aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 10975aea3dcdSIlya Dryomov struct rb_node *n; 10985aea3dcdSIlya Dryomov 10995aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 11005aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11015aea3dcdSIlya Dryomov 11025aea3dcdSIlya Dryomov ceph_con_close(&osd->o_con); 11035aea3dcdSIlya Dryomov 11045aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 11055aea3dcdSIlya Dryomov struct ceph_osd_request *req = 11065aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 11075aea3dcdSIlya Dryomov 11085aea3dcdSIlya Dryomov n = rb_next(n); /* unlink_request() */ 11095aea3dcdSIlya Dryomov 11105aea3dcdSIlya Dryomov dout(" reassigning req %p tid %llu\n", req, req->r_tid); 11115aea3dcdSIlya Dryomov unlink_request(osd, req); 11125aea3dcdSIlya Dryomov link_request(&osdc->homeless_osd, req); 11135aea3dcdSIlya Dryomov } 1114922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 1115922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1116922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 1117922dab61SIlya Dryomov 1118922dab61SIlya Dryomov n = rb_next(n); /* unlink_linger() */ 1119922dab61SIlya Dryomov 1120922dab61SIlya Dryomov dout(" reassigning lreq %p linger_id %llu\n", lreq, 1121922dab61SIlya Dryomov lreq->linger_id); 1122922dab61SIlya Dryomov unlink_linger(osd, lreq); 1123922dab61SIlya Dryomov link_linger(&osdc->homeless_osd, lreq); 1124922dab61SIlya Dryomov } 11255aea3dcdSIlya Dryomov 11265aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 11275aea3dcdSIlya Dryomov erase_osd(&osdc->osds, osd); 11285aea3dcdSIlya Dryomov put_osd(osd); 11295aea3dcdSIlya Dryomov } 11305aea3dcdSIlya Dryomov 11315aea3dcdSIlya Dryomov /* 11323d14c5d2SYehuda Sadeh * reset osd connect 11333d14c5d2SYehuda Sadeh */ 11345aea3dcdSIlya Dryomov static int reopen_osd(struct ceph_osd *osd) 11353d14c5d2SYehuda Sadeh { 1136c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 11373d14c5d2SYehuda Sadeh 11385aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 11395aea3dcdSIlya Dryomov 11405aea3dcdSIlya Dryomov if (RB_EMPTY_ROOT(&osd->o_requests) && 1141922dab61SIlya Dryomov RB_EMPTY_ROOT(&osd->o_linger_requests)) { 11425aea3dcdSIlya Dryomov close_osd(osd); 1143c3acb181SAlex Elder return -ENODEV; 1144c3acb181SAlex Elder } 1145c3acb181SAlex Elder 11465aea3dcdSIlya Dryomov peer_addr = &osd->o_osdc->osdmap->osd_addr[osd->o_osd]; 1147c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 11483d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 11495aea3dcdSIlya Dryomov struct rb_node *n; 1150c3acb181SAlex Elder 11513d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 11520b4af2e8SIlya Dryomov "letting msgr retry\n"); 11533d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 11545aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; n = rb_next(n)) { 11555aea3dcdSIlya Dryomov struct ceph_osd_request *req = 11565aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 11573d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 11585aea3dcdSIlya Dryomov } 1159c3acb181SAlex Elder 1160c3acb181SAlex Elder return -EAGAIN; 11613d14c5d2SYehuda Sadeh } 1162c3acb181SAlex Elder 1163c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1164c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1165c3acb181SAlex Elder osd->o_incarnation++; 1166c3acb181SAlex Elder 1167c3acb181SAlex Elder return 0; 11683d14c5d2SYehuda Sadeh } 11693d14c5d2SYehuda Sadeh 11705aea3dcdSIlya Dryomov static struct ceph_osd *lookup_create_osd(struct ceph_osd_client *osdc, int o, 11715aea3dcdSIlya Dryomov bool wrlocked) 11723d14c5d2SYehuda Sadeh { 11735aea3dcdSIlya Dryomov struct ceph_osd *osd; 11745aea3dcdSIlya Dryomov 11755aea3dcdSIlya Dryomov if (wrlocked) 11765aea3dcdSIlya Dryomov verify_osdc_wrlocked(osdc); 11775aea3dcdSIlya Dryomov else 11785aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 11795aea3dcdSIlya Dryomov 11805aea3dcdSIlya Dryomov if (o != CEPH_HOMELESS_OSD) 11815aea3dcdSIlya Dryomov osd = lookup_osd(&osdc->osds, o); 11825aea3dcdSIlya Dryomov else 11835aea3dcdSIlya Dryomov osd = &osdc->homeless_osd; 11845aea3dcdSIlya Dryomov if (!osd) { 11855aea3dcdSIlya Dryomov if (!wrlocked) 11865aea3dcdSIlya Dryomov return ERR_PTR(-EAGAIN); 11875aea3dcdSIlya Dryomov 11885aea3dcdSIlya Dryomov osd = create_osd(osdc, o); 11895aea3dcdSIlya Dryomov insert_osd(&osdc->osds, osd); 11905aea3dcdSIlya Dryomov ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, 11915aea3dcdSIlya Dryomov &osdc->osdmap->osd_addr[osd->o_osd]); 11925aea3dcdSIlya Dryomov } 11935aea3dcdSIlya Dryomov 11945aea3dcdSIlya Dryomov dout("%s osdc %p osd%d -> osd %p\n", __func__, osdc, o, osd); 11955aea3dcdSIlya Dryomov return osd; 1196a40c4f10SYehuda Sadeh } 1197a40c4f10SYehuda Sadeh 11983d14c5d2SYehuda Sadeh /* 11995aea3dcdSIlya Dryomov * Create request <-> OSD session relation. 12005aea3dcdSIlya Dryomov * 12015aea3dcdSIlya Dryomov * @req has to be assigned a tid, @osd may be homeless. 12023d14c5d2SYehuda Sadeh */ 12035aea3dcdSIlya Dryomov static void link_request(struct ceph_osd *osd, struct ceph_osd_request *req) 12043d14c5d2SYehuda Sadeh { 12055aea3dcdSIlya Dryomov verify_osd_locked(osd); 12065aea3dcdSIlya Dryomov WARN_ON(!req->r_tid || req->r_osd); 12075aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 120835f9f8a0SSage Weil req, req->r_tid); 12095aea3dcdSIlya Dryomov 12105aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 12115aea3dcdSIlya Dryomov __remove_osd_from_lru(osd); 12125aea3dcdSIlya Dryomov else 12135aea3dcdSIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 12145aea3dcdSIlya Dryomov 12155aea3dcdSIlya Dryomov get_osd(osd); 12165aea3dcdSIlya Dryomov insert_request(&osd->o_requests, req); 12175aea3dcdSIlya Dryomov req->r_osd = osd; 121835f9f8a0SSage Weil } 121935f9f8a0SSage Weil 12205aea3dcdSIlya Dryomov static void unlink_request(struct ceph_osd *osd, struct ceph_osd_request *req) 12213d14c5d2SYehuda Sadeh { 12225aea3dcdSIlya Dryomov verify_osd_locked(osd); 12235aea3dcdSIlya Dryomov WARN_ON(req->r_osd != osd); 12245aea3dcdSIlya Dryomov dout("%s osd %p osd%d req %p tid %llu\n", __func__, osd, osd->o_osd, 12255aea3dcdSIlya Dryomov req, req->r_tid); 12265aea3dcdSIlya Dryomov 12275aea3dcdSIlya Dryomov req->r_osd = NULL; 12285aea3dcdSIlya Dryomov erase_request(&osd->o_requests, req); 12295aea3dcdSIlya Dryomov put_osd(osd); 12305aea3dcdSIlya Dryomov 12315aea3dcdSIlya Dryomov if (!osd_homeless(osd)) 12325aea3dcdSIlya Dryomov maybe_move_osd_to_lru(osd); 12335aea3dcdSIlya Dryomov else 12345aea3dcdSIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 12353d14c5d2SYehuda Sadeh } 12363d14c5d2SYehuda Sadeh 123763244fa1SIlya Dryomov static bool __pool_full(struct ceph_pg_pool_info *pi) 123863244fa1SIlya Dryomov { 123963244fa1SIlya Dryomov return pi->flags & CEPH_POOL_FLAG_FULL; 124063244fa1SIlya Dryomov } 124163244fa1SIlya Dryomov 124242c1b124SIlya Dryomov static bool have_pool_full(struct ceph_osd_client *osdc) 124342c1b124SIlya Dryomov { 124442c1b124SIlya Dryomov struct rb_node *n; 124542c1b124SIlya Dryomov 124642c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 124742c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 124842c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 124942c1b124SIlya Dryomov 125042c1b124SIlya Dryomov if (__pool_full(pi)) 125142c1b124SIlya Dryomov return true; 125242c1b124SIlya Dryomov } 125342c1b124SIlya Dryomov 125442c1b124SIlya Dryomov return false; 125542c1b124SIlya Dryomov } 125642c1b124SIlya Dryomov 12575aea3dcdSIlya Dryomov static bool pool_full(struct ceph_osd_client *osdc, s64 pool_id) 12585aea3dcdSIlya Dryomov { 12595aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 12605aea3dcdSIlya Dryomov 12615aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 12625aea3dcdSIlya Dryomov if (!pi) 12635aea3dcdSIlya Dryomov return false; 12645aea3dcdSIlya Dryomov 12655aea3dcdSIlya Dryomov return __pool_full(pi); 12665aea3dcdSIlya Dryomov } 12675aea3dcdSIlya Dryomov 12683d14c5d2SYehuda Sadeh /* 1269d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1270d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1271d29adb34SJosh Durgin */ 127263244fa1SIlya Dryomov static bool target_should_be_paused(struct ceph_osd_client *osdc, 127363244fa1SIlya Dryomov const struct ceph_osd_request_target *t, 127463244fa1SIlya Dryomov struct ceph_pg_pool_info *pi) 127563244fa1SIlya Dryomov { 127663244fa1SIlya Dryomov bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 127763244fa1SIlya Dryomov bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 127863244fa1SIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 127963244fa1SIlya Dryomov __pool_full(pi); 128063244fa1SIlya Dryomov 128163244fa1SIlya Dryomov WARN_ON(pi->id != t->base_oloc.pool); 128263244fa1SIlya Dryomov return (t->flags & CEPH_OSD_FLAG_READ && pauserd) || 128363244fa1SIlya Dryomov (t->flags & CEPH_OSD_FLAG_WRITE && pausewr); 128463244fa1SIlya Dryomov } 128563244fa1SIlya Dryomov 128663244fa1SIlya Dryomov enum calc_target_result { 128763244fa1SIlya Dryomov CALC_TARGET_NO_ACTION = 0, 128863244fa1SIlya Dryomov CALC_TARGET_NEED_RESEND, 128963244fa1SIlya Dryomov CALC_TARGET_POOL_DNE, 129063244fa1SIlya Dryomov }; 129163244fa1SIlya Dryomov 129263244fa1SIlya Dryomov static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 129363244fa1SIlya Dryomov struct ceph_osd_request_target *t, 129463244fa1SIlya Dryomov u32 *last_force_resend, 129563244fa1SIlya Dryomov bool any_change) 129663244fa1SIlya Dryomov { 129763244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 129863244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 129963244fa1SIlya Dryomov struct ceph_osds up, acting; 130063244fa1SIlya Dryomov bool force_resend = false; 130163244fa1SIlya Dryomov bool need_check_tiering = false; 130263244fa1SIlya Dryomov bool need_resend = false; 130363244fa1SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc->osdmap, 130463244fa1SIlya Dryomov CEPH_OSDMAP_SORTBITWISE); 130563244fa1SIlya Dryomov enum calc_target_result ct_res; 130663244fa1SIlya Dryomov int ret; 130763244fa1SIlya Dryomov 130863244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 130963244fa1SIlya Dryomov if (!pi) { 131063244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 131163244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 131263244fa1SIlya Dryomov goto out; 131363244fa1SIlya Dryomov } 131463244fa1SIlya Dryomov 131563244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 131663244fa1SIlya Dryomov if (last_force_resend && 131763244fa1SIlya Dryomov *last_force_resend < pi->last_force_request_resend) { 131863244fa1SIlya Dryomov *last_force_resend = pi->last_force_request_resend; 131963244fa1SIlya Dryomov force_resend = true; 132063244fa1SIlya Dryomov } else if (!last_force_resend) { 132163244fa1SIlya Dryomov force_resend = true; 132263244fa1SIlya Dryomov } 132363244fa1SIlya Dryomov } 132463244fa1SIlya Dryomov if (ceph_oid_empty(&t->target_oid) || force_resend) { 132563244fa1SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 132663244fa1SIlya Dryomov need_check_tiering = true; 132763244fa1SIlya Dryomov } 132863244fa1SIlya Dryomov if (ceph_oloc_empty(&t->target_oloc) || force_resend) { 132963244fa1SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 133063244fa1SIlya Dryomov need_check_tiering = true; 133163244fa1SIlya Dryomov } 133263244fa1SIlya Dryomov 133363244fa1SIlya Dryomov if (need_check_tiering && 133463244fa1SIlya Dryomov (t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 133563244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) 133663244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 133763244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) 133863244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 133963244fa1SIlya Dryomov } 134063244fa1SIlya Dryomov 134163244fa1SIlya Dryomov ret = ceph_object_locator_to_pg(osdc->osdmap, &t->target_oid, 134263244fa1SIlya Dryomov &t->target_oloc, &pgid); 134363244fa1SIlya Dryomov if (ret) { 134463244fa1SIlya Dryomov WARN_ON(ret != -ENOENT); 134563244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 134663244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 134763244fa1SIlya Dryomov goto out; 134863244fa1SIlya Dryomov } 134963244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 135063244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 135163244fa1SIlya Dryomov 135263244fa1SIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, &pgid, &up, &acting); 135363244fa1SIlya Dryomov if (any_change && 135463244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 135563244fa1SIlya Dryomov &acting, 135663244fa1SIlya Dryomov &t->up, 135763244fa1SIlya Dryomov &up, 135863244fa1SIlya Dryomov t->size, 135963244fa1SIlya Dryomov pi->size, 136063244fa1SIlya Dryomov t->min_size, 136163244fa1SIlya Dryomov pi->min_size, 136263244fa1SIlya Dryomov t->pg_num, 136363244fa1SIlya Dryomov pi->pg_num, 136463244fa1SIlya Dryomov t->sort_bitwise, 136563244fa1SIlya Dryomov sort_bitwise, 136663244fa1SIlya Dryomov &last_pgid)) 136763244fa1SIlya Dryomov force_resend = true; 136863244fa1SIlya Dryomov 136963244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 137063244fa1SIlya Dryomov t->paused = false; 137163244fa1SIlya Dryomov need_resend = true; 137263244fa1SIlya Dryomov } 137363244fa1SIlya Dryomov 137463244fa1SIlya Dryomov if (ceph_pg_compare(&t->pgid, &pgid) || 137563244fa1SIlya Dryomov ceph_osds_changed(&t->acting, &acting, any_change) || 137663244fa1SIlya Dryomov force_resend) { 137763244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 137863244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 137963244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 138063244fa1SIlya Dryomov t->size = pi->size; 138163244fa1SIlya Dryomov t->min_size = pi->min_size; 138263244fa1SIlya Dryomov t->pg_num = pi->pg_num; 138363244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 138463244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 138563244fa1SIlya Dryomov 138663244fa1SIlya Dryomov t->osd = acting.primary; 138763244fa1SIlya Dryomov need_resend = true; 138863244fa1SIlya Dryomov } 138963244fa1SIlya Dryomov 139063244fa1SIlya Dryomov ct_res = need_resend ? CALC_TARGET_NEED_RESEND : CALC_TARGET_NO_ACTION; 139163244fa1SIlya Dryomov out: 139263244fa1SIlya Dryomov dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); 139363244fa1SIlya Dryomov return ct_res; 139463244fa1SIlya Dryomov } 139563244fa1SIlya Dryomov 1396bb873b53SIlya Dryomov static void setup_request_data(struct ceph_osd_request *req, 1397bb873b53SIlya Dryomov struct ceph_msg *msg) 13983d14c5d2SYehuda Sadeh { 1399bb873b53SIlya Dryomov u32 data_len = 0; 1400bb873b53SIlya Dryomov int i; 14013d14c5d2SYehuda Sadeh 1402bb873b53SIlya Dryomov if (!list_empty(&msg->data)) 1403bb873b53SIlya Dryomov return; 14043d14c5d2SYehuda Sadeh 1405bb873b53SIlya Dryomov WARN_ON(msg->data_length); 1406bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1407bb873b53SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[i]; 1408bb873b53SIlya Dryomov 1409bb873b53SIlya Dryomov switch (op->op) { 1410bb873b53SIlya Dryomov /* request */ 1411bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITE: 1412bb873b53SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 1413bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->extent.length); 1414bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->extent.osd_data); 1415bb873b53SIlya Dryomov break; 1416bb873b53SIlya Dryomov case CEPH_OSD_OP_SETXATTR: 1417bb873b53SIlya Dryomov case CEPH_OSD_OP_CMPXATTR: 1418bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->xattr.name_len + 1419bb873b53SIlya Dryomov op->xattr.value_len); 1420bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->xattr.osd_data); 1421bb873b53SIlya Dryomov break; 1422922dab61SIlya Dryomov case CEPH_OSD_OP_NOTIFY_ACK: 1423922dab61SIlya Dryomov ceph_osdc_msg_data_add(msg, 1424922dab61SIlya Dryomov &op->notify_ack.request_data); 1425922dab61SIlya Dryomov break; 1426bb873b53SIlya Dryomov 1427bb873b53SIlya Dryomov /* reply */ 1428bb873b53SIlya Dryomov case CEPH_OSD_OP_STAT: 1429bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1430bb873b53SIlya Dryomov &op->raw_data_in); 1431bb873b53SIlya Dryomov break; 1432bb873b53SIlya Dryomov case CEPH_OSD_OP_READ: 1433bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1434bb873b53SIlya Dryomov &op->extent.osd_data); 1435bb873b53SIlya Dryomov break; 1436bb873b53SIlya Dryomov 1437bb873b53SIlya Dryomov /* both */ 1438bb873b53SIlya Dryomov case CEPH_OSD_OP_CALL: 1439bb873b53SIlya Dryomov WARN_ON(op->indata_len != op->cls.class_len + 1440bb873b53SIlya Dryomov op->cls.method_len + 1441bb873b53SIlya Dryomov op->cls.indata_len); 1442bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_info); 1443bb873b53SIlya Dryomov /* optional, can be NONE */ 1444bb873b53SIlya Dryomov ceph_osdc_msg_data_add(msg, &op->cls.request_data); 1445bb873b53SIlya Dryomov /* optional, can be NONE */ 1446bb873b53SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 1447bb873b53SIlya Dryomov &op->cls.response_data); 1448bb873b53SIlya Dryomov break; 144919079203SIlya Dryomov case CEPH_OSD_OP_NOTIFY: 145019079203SIlya Dryomov ceph_osdc_msg_data_add(msg, 145119079203SIlya Dryomov &op->notify.request_data); 145219079203SIlya Dryomov ceph_osdc_msg_data_add(req->r_reply, 145319079203SIlya Dryomov &op->notify.response_data); 145419079203SIlya Dryomov break; 1455bb873b53SIlya Dryomov } 1456bb873b53SIlya Dryomov 1457bb873b53SIlya Dryomov data_len += op->indata_len; 1458bb873b53SIlya Dryomov } 1459bb873b53SIlya Dryomov 1460bb873b53SIlya Dryomov WARN_ON(data_len != msg->data_length); 1461bb873b53SIlya Dryomov } 1462bb873b53SIlya Dryomov 1463bb873b53SIlya Dryomov static void encode_request(struct ceph_osd_request *req, struct ceph_msg *msg) 1464bb873b53SIlya Dryomov { 1465bb873b53SIlya Dryomov void *p = msg->front.iov_base; 1466bb873b53SIlya Dryomov void *const end = p + msg->front_alloc_len; 1467bb873b53SIlya Dryomov u32 data_len = 0; 1468bb873b53SIlya Dryomov int i; 1469bb873b53SIlya Dryomov 1470bb873b53SIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_WRITE) { 1471bb873b53SIlya Dryomov /* snapshots aren't writeable */ 1472bb873b53SIlya Dryomov WARN_ON(req->r_snapid != CEPH_NOSNAP); 1473bb873b53SIlya Dryomov } else { 1474bb873b53SIlya Dryomov WARN_ON(req->r_mtime.tv_sec || req->r_mtime.tv_nsec || 1475bb873b53SIlya Dryomov req->r_data_offset || req->r_snapc); 1476bb873b53SIlya Dryomov } 1477bb873b53SIlya Dryomov 1478bb873b53SIlya Dryomov setup_request_data(req, msg); 1479bb873b53SIlya Dryomov 1480bb873b53SIlya Dryomov ceph_encode_32(&p, 1); /* client_inc, always 1 */ 1481bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_osdc->osdmap->epoch); 1482bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_flags); 1483bb873b53SIlya Dryomov ceph_encode_timespec(p, &req->r_mtime); 1484bb873b53SIlya Dryomov p += sizeof(struct ceph_timespec); 1485bb873b53SIlya Dryomov /* aka reassert_version */ 1486bb873b53SIlya Dryomov memcpy(p, &req->r_replay_version, sizeof(req->r_replay_version)); 1487bb873b53SIlya Dryomov p += sizeof(req->r_replay_version); 1488bb873b53SIlya Dryomov 1489bb873b53SIlya Dryomov /* oloc */ 1490bb873b53SIlya Dryomov ceph_encode_8(&p, 4); 1491bb873b53SIlya Dryomov ceph_encode_8(&p, 4); 1492bb873b53SIlya Dryomov ceph_encode_32(&p, 8 + 4 + 4); 1493bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_t.target_oloc.pool); 1494bb873b53SIlya Dryomov ceph_encode_32(&p, -1); /* preferred */ 1495bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* key len */ 1496bb873b53SIlya Dryomov 1497bb873b53SIlya Dryomov /* pgid */ 1498bb873b53SIlya Dryomov ceph_encode_8(&p, 1); 1499a66dd383SIlya Dryomov ceph_encode_64(&p, req->r_t.pgid.pool); 1500a66dd383SIlya Dryomov ceph_encode_32(&p, req->r_t.pgid.seed); 1501bb873b53SIlya Dryomov ceph_encode_32(&p, -1); /* preferred */ 15022169aea6SSage Weil 1503bb873b53SIlya Dryomov /* oid */ 1504bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_t.target_oid.name_len); 1505bb873b53SIlya Dryomov memcpy(p, req->r_t.target_oid.name, req->r_t.target_oid.name_len); 1506bb873b53SIlya Dryomov p += req->r_t.target_oid.name_len; 1507bb873b53SIlya Dryomov 1508bb873b53SIlya Dryomov /* ops, can imply data */ 1509bb873b53SIlya Dryomov ceph_encode_16(&p, req->r_num_ops); 1510bb873b53SIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 1511bb873b53SIlya Dryomov data_len += osd_req_encode_op(p, &req->r_ops[i]); 1512bb873b53SIlya Dryomov p += sizeof(struct ceph_osd_op); 1513bb873b53SIlya Dryomov } 1514bb873b53SIlya Dryomov 1515bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapid); /* snapid */ 1516bb873b53SIlya Dryomov if (req->r_snapc) { 1517bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->seq); 1518bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_snapc->num_snaps); 1519bb873b53SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) 1520bb873b53SIlya Dryomov ceph_encode_64(&p, req->r_snapc->snaps[i]); 1521bb873b53SIlya Dryomov } else { 1522bb873b53SIlya Dryomov ceph_encode_64(&p, 0); /* snap_seq */ 1523bb873b53SIlya Dryomov ceph_encode_32(&p, 0); /* snaps len */ 1524bb873b53SIlya Dryomov } 1525bb873b53SIlya Dryomov 1526bb873b53SIlya Dryomov ceph_encode_32(&p, req->r_attempts); /* retry_attempt */ 1527bb873b53SIlya Dryomov 1528bb873b53SIlya Dryomov BUG_ON(p > end); 1529bb873b53SIlya Dryomov msg->front.iov_len = p - msg->front.iov_base; 1530bb873b53SIlya Dryomov msg->hdr.version = cpu_to_le16(4); /* MOSDOp v4 */ 1531bb873b53SIlya Dryomov msg->hdr.front_len = cpu_to_le32(msg->front.iov_len); 1532bb873b53SIlya Dryomov msg->hdr.data_len = cpu_to_le32(data_len); 1533bb873b53SIlya Dryomov /* 1534bb873b53SIlya Dryomov * The header "data_off" is a hint to the receiver allowing it 1535bb873b53SIlya Dryomov * to align received data into its buffers such that there's no 1536bb873b53SIlya Dryomov * need to re-copy it before writing it to disk (direct I/O). 1537bb873b53SIlya Dryomov */ 1538bb873b53SIlya Dryomov msg->hdr.data_off = cpu_to_le16(req->r_data_offset); 1539bb873b53SIlya Dryomov 1540bb873b53SIlya Dryomov dout("%s req %p oid %*pE oid_len %d front %zu data %u\n", __func__, 1541bb873b53SIlya Dryomov req, req->r_t.target_oid.name_len, req->r_t.target_oid.name, 1542bb873b53SIlya Dryomov req->r_t.target_oid.name_len, msg->front.iov_len, data_len); 1543bb873b53SIlya Dryomov } 1544bb873b53SIlya Dryomov 1545bb873b53SIlya Dryomov /* 1546bb873b53SIlya Dryomov * @req has to be assigned a tid and registered. 1547bb873b53SIlya Dryomov */ 1548bb873b53SIlya Dryomov static void send_request(struct ceph_osd_request *req) 1549bb873b53SIlya Dryomov { 1550bb873b53SIlya Dryomov struct ceph_osd *osd = req->r_osd; 1551bb873b53SIlya Dryomov 15525aea3dcdSIlya Dryomov verify_osd_locked(osd); 1553bb873b53SIlya Dryomov WARN_ON(osd->o_osd != req->r_t.osd); 1554bb873b53SIlya Dryomov 15555aea3dcdSIlya Dryomov /* 15565aea3dcdSIlya Dryomov * We may have a previously queued request message hanging 15575aea3dcdSIlya Dryomov * around. Cancel it to avoid corrupting the msgr. 15585aea3dcdSIlya Dryomov */ 15595aea3dcdSIlya Dryomov if (req->r_sent) 15605aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 15615aea3dcdSIlya Dryomov 1562bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_KNOWN_REDIR; 1563bb873b53SIlya Dryomov if (req->r_attempts) 1564bb873b53SIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_RETRY; 1565bb873b53SIlya Dryomov else 1566bb873b53SIlya Dryomov WARN_ON(req->r_flags & CEPH_OSD_FLAG_RETRY); 1567bb873b53SIlya Dryomov 1568bb873b53SIlya Dryomov encode_request(req, req->r_request); 1569bb873b53SIlya Dryomov 1570bb873b53SIlya Dryomov dout("%s req %p tid %llu to pg %llu.%x osd%d flags 0x%x attempt %d\n", 1571bb873b53SIlya Dryomov __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, 1572bb873b53SIlya Dryomov req->r_t.osd, req->r_flags, req->r_attempts); 1573bb873b53SIlya Dryomov 1574bb873b53SIlya Dryomov req->r_t.paused = false; 15753d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1576bb873b53SIlya Dryomov req->r_attempts++; 15773d14c5d2SYehuda Sadeh 1578bb873b53SIlya Dryomov req->r_sent = osd->o_incarnation; 1579bb873b53SIlya Dryomov req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 1580bb873b53SIlya Dryomov ceph_con_send(&osd->o_con, ceph_msg_get(req->r_request)); 15813d14c5d2SYehuda Sadeh } 15823d14c5d2SYehuda Sadeh 158342c1b124SIlya Dryomov static void maybe_request_map(struct ceph_osd_client *osdc) 158442c1b124SIlya Dryomov { 158542c1b124SIlya Dryomov bool continuous = false; 158642c1b124SIlya Dryomov 15875aea3dcdSIlya Dryomov verify_osdc_locked(osdc); 158842c1b124SIlya Dryomov WARN_ON(!osdc->osdmap->epoch); 158942c1b124SIlya Dryomov 159042c1b124SIlya Dryomov if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 159142c1b124SIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || 159242c1b124SIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) { 159342c1b124SIlya Dryomov dout("%s osdc %p continuous\n", __func__, osdc); 159442c1b124SIlya Dryomov continuous = true; 159542c1b124SIlya Dryomov } else { 159642c1b124SIlya Dryomov dout("%s osdc %p onetime\n", __func__, osdc); 159742c1b124SIlya Dryomov } 159842c1b124SIlya Dryomov 159942c1b124SIlya Dryomov if (ceph_monc_want_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 160042c1b124SIlya Dryomov osdc->osdmap->epoch + 1, continuous)) 160142c1b124SIlya Dryomov ceph_monc_renew_subs(&osdc->client->monc); 160242c1b124SIlya Dryomov } 160342c1b124SIlya Dryomov 16045aea3dcdSIlya Dryomov static void __submit_request(struct ceph_osd_request *req, bool wrlocked) 16050bbfdfe8SIlya Dryomov { 16065aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 16075aea3dcdSIlya Dryomov struct ceph_osd *osd; 16085aea3dcdSIlya Dryomov bool need_send = false; 16095aea3dcdSIlya Dryomov bool promoted = false; 16100bbfdfe8SIlya Dryomov 16115aea3dcdSIlya Dryomov WARN_ON(req->r_tid || req->r_got_reply); 16125aea3dcdSIlya Dryomov dout("%s req %p wrlocked %d\n", __func__, req, wrlocked); 16135aea3dcdSIlya Dryomov 16145aea3dcdSIlya Dryomov again: 16155aea3dcdSIlya Dryomov calc_target(osdc, &req->r_t, &req->r_last_force_resend, false); 16165aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, wrlocked); 16175aea3dcdSIlya Dryomov if (IS_ERR(osd)) { 16185aea3dcdSIlya Dryomov WARN_ON(PTR_ERR(osd) != -EAGAIN || wrlocked); 16195aea3dcdSIlya Dryomov goto promote; 16205aea3dcdSIlya Dryomov } 16215aea3dcdSIlya Dryomov 16225aea3dcdSIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 16235aea3dcdSIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) { 16245aea3dcdSIlya Dryomov dout("req %p pausewr\n", req); 16255aea3dcdSIlya Dryomov req->r_t.paused = true; 16265aea3dcdSIlya Dryomov maybe_request_map(osdc); 16275aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_READ) && 16285aea3dcdSIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD)) { 16295aea3dcdSIlya Dryomov dout("req %p pauserd\n", req); 16305aea3dcdSIlya Dryomov req->r_t.paused = true; 16315aea3dcdSIlya Dryomov maybe_request_map(osdc); 16325aea3dcdSIlya Dryomov } else if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 16335aea3dcdSIlya Dryomov !(req->r_flags & (CEPH_OSD_FLAG_FULL_TRY | 16345aea3dcdSIlya Dryomov CEPH_OSD_FLAG_FULL_FORCE)) && 16355aea3dcdSIlya Dryomov (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 16365aea3dcdSIlya Dryomov pool_full(osdc, req->r_t.base_oloc.pool))) { 16375aea3dcdSIlya Dryomov dout("req %p full/pool_full\n", req); 16385aea3dcdSIlya Dryomov pr_warn_ratelimited("FULL or reached pool quota\n"); 16395aea3dcdSIlya Dryomov req->r_t.paused = true; 16405aea3dcdSIlya Dryomov maybe_request_map(osdc); 16415aea3dcdSIlya Dryomov } else if (!osd_homeless(osd)) { 16425aea3dcdSIlya Dryomov need_send = true; 16430bbfdfe8SIlya Dryomov } else { 16445aea3dcdSIlya Dryomov maybe_request_map(osdc); 16450bbfdfe8SIlya Dryomov } 16460bbfdfe8SIlya Dryomov 16475aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 16485aea3dcdSIlya Dryomov /* 16495aea3dcdSIlya Dryomov * Assign the tid atomically with send_request() to protect 16505aea3dcdSIlya Dryomov * multiple writes to the same object from racing with each 16515aea3dcdSIlya Dryomov * other, resulting in out of order ops on the OSDs. 16525aea3dcdSIlya Dryomov */ 16535aea3dcdSIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 16545aea3dcdSIlya Dryomov link_request(osd, req); 16555aea3dcdSIlya Dryomov if (need_send) 16565aea3dcdSIlya Dryomov send_request(req); 16575aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 16585aea3dcdSIlya Dryomov 16595aea3dcdSIlya Dryomov if (promoted) 16605aea3dcdSIlya Dryomov downgrade_write(&osdc->lock); 16615aea3dcdSIlya Dryomov return; 16625aea3dcdSIlya Dryomov 16635aea3dcdSIlya Dryomov promote: 16645aea3dcdSIlya Dryomov up_read(&osdc->lock); 16655aea3dcdSIlya Dryomov down_write(&osdc->lock); 16665aea3dcdSIlya Dryomov wrlocked = true; 16675aea3dcdSIlya Dryomov promoted = true; 16685aea3dcdSIlya Dryomov goto again; 16690bbfdfe8SIlya Dryomov } 16700bbfdfe8SIlya Dryomov 16715aea3dcdSIlya Dryomov static void account_request(struct ceph_osd_request *req) 16725aea3dcdSIlya Dryomov { 16735aea3dcdSIlya Dryomov unsigned int mask = CEPH_OSD_FLAG_ACK | CEPH_OSD_FLAG_ONDISK; 16745aea3dcdSIlya Dryomov 16755aea3dcdSIlya Dryomov if (req->r_flags & CEPH_OSD_FLAG_READ) { 16765aea3dcdSIlya Dryomov WARN_ON(req->r_flags & mask); 16775aea3dcdSIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_ACK; 16785aea3dcdSIlya Dryomov } else if (req->r_flags & CEPH_OSD_FLAG_WRITE) 16795aea3dcdSIlya Dryomov WARN_ON(!(req->r_flags & mask)); 16805aea3dcdSIlya Dryomov else 16815aea3dcdSIlya Dryomov WARN_ON(1); 16825aea3dcdSIlya Dryomov 16835aea3dcdSIlya Dryomov WARN_ON(req->r_unsafe_callback && (req->r_flags & mask) != mask); 16845aea3dcdSIlya Dryomov atomic_inc(&req->r_osdc->num_requests); 16855aea3dcdSIlya Dryomov } 16865aea3dcdSIlya Dryomov 16875aea3dcdSIlya Dryomov static void submit_request(struct ceph_osd_request *req, bool wrlocked) 16885aea3dcdSIlya Dryomov { 16895aea3dcdSIlya Dryomov ceph_osdc_get_request(req); 16905aea3dcdSIlya Dryomov account_request(req); 16915aea3dcdSIlya Dryomov __submit_request(req, wrlocked); 16925aea3dcdSIlya Dryomov } 16935aea3dcdSIlya Dryomov 16945aea3dcdSIlya Dryomov static void __finish_request(struct ceph_osd_request *req) 16955aea3dcdSIlya Dryomov { 16965aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 16975aea3dcdSIlya Dryomov struct ceph_osd *osd = req->r_osd; 16985aea3dcdSIlya Dryomov 16995aea3dcdSIlya Dryomov verify_osd_locked(osd); 17005aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 17015aea3dcdSIlya Dryomov 17025aea3dcdSIlya Dryomov unlink_request(osd, req); 17035aea3dcdSIlya Dryomov atomic_dec(&osdc->num_requests); 17045aea3dcdSIlya Dryomov 17055aea3dcdSIlya Dryomov /* 17065aea3dcdSIlya Dryomov * If an OSD has failed or returned and a request has been sent 17075aea3dcdSIlya Dryomov * twice, it's possible to get a reply and end up here while the 17085aea3dcdSIlya Dryomov * request message is queued for delivery. We will ignore the 17095aea3dcdSIlya Dryomov * reply, so not a big deal, but better to try and catch it. 17105aea3dcdSIlya Dryomov */ 17115aea3dcdSIlya Dryomov ceph_msg_revoke(req->r_request); 17125aea3dcdSIlya Dryomov ceph_msg_revoke_incoming(req->r_reply); 17135aea3dcdSIlya Dryomov } 17145aea3dcdSIlya Dryomov 17155aea3dcdSIlya Dryomov static void finish_request(struct ceph_osd_request *req) 17165aea3dcdSIlya Dryomov { 17175aea3dcdSIlya Dryomov __finish_request(req); 17185aea3dcdSIlya Dryomov ceph_osdc_put_request(req); 17190bbfdfe8SIlya Dryomov } 17200bbfdfe8SIlya Dryomov 1721fe5da05eSIlya Dryomov static void __complete_request(struct ceph_osd_request *req) 1722fe5da05eSIlya Dryomov { 1723fe5da05eSIlya Dryomov if (req->r_callback) 1724fe5da05eSIlya Dryomov req->r_callback(req); 1725fe5da05eSIlya Dryomov else 1726fe5da05eSIlya Dryomov complete_all(&req->r_completion); 1727fe5da05eSIlya Dryomov } 1728fe5da05eSIlya Dryomov 17295aea3dcdSIlya Dryomov static void cancel_request(struct ceph_osd_request *req) 17305aea3dcdSIlya Dryomov { 17315aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 17325aea3dcdSIlya Dryomov 17335aea3dcdSIlya Dryomov finish_request(req); 17345aea3dcdSIlya Dryomov } 17355aea3dcdSIlya Dryomov 17360bbfdfe8SIlya Dryomov /* 1737922dab61SIlya Dryomov * lingering requests, watch/notify v2 infrastructure 1738922dab61SIlya Dryomov */ 1739922dab61SIlya Dryomov static void linger_release(struct kref *kref) 1740922dab61SIlya Dryomov { 1741922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 1742922dab61SIlya Dryomov container_of(kref, struct ceph_osd_linger_request, kref); 1743922dab61SIlya Dryomov 1744922dab61SIlya Dryomov dout("%s lreq %p reg_req %p ping_req %p\n", __func__, lreq, 1745922dab61SIlya Dryomov lreq->reg_req, lreq->ping_req); 1746922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->node)); 1747922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&lreq->osdc_node)); 1748922dab61SIlya Dryomov WARN_ON(!list_empty(&lreq->scan_item)); 1749922dab61SIlya Dryomov WARN_ON(lreq->osd); 1750922dab61SIlya Dryomov 1751922dab61SIlya Dryomov if (lreq->reg_req) 1752922dab61SIlya Dryomov ceph_osdc_put_request(lreq->reg_req); 1753922dab61SIlya Dryomov if (lreq->ping_req) 1754922dab61SIlya Dryomov ceph_osdc_put_request(lreq->ping_req); 1755922dab61SIlya Dryomov target_destroy(&lreq->t); 1756922dab61SIlya Dryomov kfree(lreq); 1757922dab61SIlya Dryomov } 1758922dab61SIlya Dryomov 1759922dab61SIlya Dryomov static void linger_put(struct ceph_osd_linger_request *lreq) 1760922dab61SIlya Dryomov { 1761922dab61SIlya Dryomov if (lreq) 1762922dab61SIlya Dryomov kref_put(&lreq->kref, linger_release); 1763922dab61SIlya Dryomov } 1764922dab61SIlya Dryomov 1765922dab61SIlya Dryomov static struct ceph_osd_linger_request * 1766922dab61SIlya Dryomov linger_get(struct ceph_osd_linger_request *lreq) 1767922dab61SIlya Dryomov { 1768922dab61SIlya Dryomov kref_get(&lreq->kref); 1769922dab61SIlya Dryomov return lreq; 1770922dab61SIlya Dryomov } 1771922dab61SIlya Dryomov 1772922dab61SIlya Dryomov static struct ceph_osd_linger_request * 1773922dab61SIlya Dryomov linger_alloc(struct ceph_osd_client *osdc) 1774922dab61SIlya Dryomov { 1775922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 1776922dab61SIlya Dryomov 1777922dab61SIlya Dryomov lreq = kzalloc(sizeof(*lreq), GFP_NOIO); 1778922dab61SIlya Dryomov if (!lreq) 1779922dab61SIlya Dryomov return NULL; 1780922dab61SIlya Dryomov 1781922dab61SIlya Dryomov kref_init(&lreq->kref); 1782922dab61SIlya Dryomov mutex_init(&lreq->lock); 1783922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->node); 1784922dab61SIlya Dryomov RB_CLEAR_NODE(&lreq->osdc_node); 1785922dab61SIlya Dryomov INIT_LIST_HEAD(&lreq->scan_item); 1786922dab61SIlya Dryomov init_completion(&lreq->reg_commit_wait); 178719079203SIlya Dryomov init_completion(&lreq->notify_finish_wait); 1788922dab61SIlya Dryomov 1789922dab61SIlya Dryomov lreq->osdc = osdc; 1790922dab61SIlya Dryomov target_init(&lreq->t); 1791922dab61SIlya Dryomov 1792922dab61SIlya Dryomov dout("%s lreq %p\n", __func__, lreq); 1793922dab61SIlya Dryomov return lreq; 1794922dab61SIlya Dryomov } 1795922dab61SIlya Dryomov 1796922dab61SIlya Dryomov DEFINE_RB_INSDEL_FUNCS(linger, struct ceph_osd_linger_request, linger_id, node) 1797922dab61SIlya Dryomov DEFINE_RB_FUNCS(linger_osdc, struct ceph_osd_linger_request, linger_id, osdc_node) 1798922dab61SIlya Dryomov 1799922dab61SIlya Dryomov /* 1800922dab61SIlya Dryomov * Create linger request <-> OSD session relation. 1801922dab61SIlya Dryomov * 1802922dab61SIlya Dryomov * @lreq has to be registered, @osd may be homeless. 1803922dab61SIlya Dryomov */ 1804922dab61SIlya Dryomov static void link_linger(struct ceph_osd *osd, 1805922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 1806922dab61SIlya Dryomov { 1807922dab61SIlya Dryomov verify_osd_locked(osd); 1808922dab61SIlya Dryomov WARN_ON(!lreq->linger_id || lreq->osd); 1809922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 1810922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 1811922dab61SIlya Dryomov 1812922dab61SIlya Dryomov if (!osd_homeless(osd)) 1813922dab61SIlya Dryomov __remove_osd_from_lru(osd); 1814922dab61SIlya Dryomov else 1815922dab61SIlya Dryomov atomic_inc(&osd->o_osdc->num_homeless); 1816922dab61SIlya Dryomov 1817922dab61SIlya Dryomov get_osd(osd); 1818922dab61SIlya Dryomov insert_linger(&osd->o_linger_requests, lreq); 1819922dab61SIlya Dryomov lreq->osd = osd; 1820922dab61SIlya Dryomov } 1821922dab61SIlya Dryomov 1822922dab61SIlya Dryomov static void unlink_linger(struct ceph_osd *osd, 1823922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 1824922dab61SIlya Dryomov { 1825922dab61SIlya Dryomov verify_osd_locked(osd); 1826922dab61SIlya Dryomov WARN_ON(lreq->osd != osd); 1827922dab61SIlya Dryomov dout("%s osd %p osd%d lreq %p linger_id %llu\n", __func__, osd, 1828922dab61SIlya Dryomov osd->o_osd, lreq, lreq->linger_id); 1829922dab61SIlya Dryomov 1830922dab61SIlya Dryomov lreq->osd = NULL; 1831922dab61SIlya Dryomov erase_linger(&osd->o_linger_requests, lreq); 1832922dab61SIlya Dryomov put_osd(osd); 1833922dab61SIlya Dryomov 1834922dab61SIlya Dryomov if (!osd_homeless(osd)) 1835922dab61SIlya Dryomov maybe_move_osd_to_lru(osd); 1836922dab61SIlya Dryomov else 1837922dab61SIlya Dryomov atomic_dec(&osd->o_osdc->num_homeless); 1838922dab61SIlya Dryomov } 1839922dab61SIlya Dryomov 1840922dab61SIlya Dryomov static bool __linger_registered(struct ceph_osd_linger_request *lreq) 1841922dab61SIlya Dryomov { 1842922dab61SIlya Dryomov verify_osdc_locked(lreq->osdc); 1843922dab61SIlya Dryomov 1844922dab61SIlya Dryomov return !RB_EMPTY_NODE(&lreq->osdc_node); 1845922dab61SIlya Dryomov } 1846922dab61SIlya Dryomov 1847922dab61SIlya Dryomov static bool linger_registered(struct ceph_osd_linger_request *lreq) 1848922dab61SIlya Dryomov { 1849922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 1850922dab61SIlya Dryomov bool registered; 1851922dab61SIlya Dryomov 1852922dab61SIlya Dryomov down_read(&osdc->lock); 1853922dab61SIlya Dryomov registered = __linger_registered(lreq); 1854922dab61SIlya Dryomov up_read(&osdc->lock); 1855922dab61SIlya Dryomov 1856922dab61SIlya Dryomov return registered; 1857922dab61SIlya Dryomov } 1858922dab61SIlya Dryomov 1859922dab61SIlya Dryomov static void linger_register(struct ceph_osd_linger_request *lreq) 1860922dab61SIlya Dryomov { 1861922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 1862922dab61SIlya Dryomov 1863922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 1864922dab61SIlya Dryomov WARN_ON(lreq->linger_id); 1865922dab61SIlya Dryomov 1866922dab61SIlya Dryomov linger_get(lreq); 1867922dab61SIlya Dryomov lreq->linger_id = ++osdc->last_linger_id; 1868922dab61SIlya Dryomov insert_linger_osdc(&osdc->linger_requests, lreq); 1869922dab61SIlya Dryomov } 1870922dab61SIlya Dryomov 1871922dab61SIlya Dryomov static void linger_unregister(struct ceph_osd_linger_request *lreq) 1872922dab61SIlya Dryomov { 1873922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 1874922dab61SIlya Dryomov 1875922dab61SIlya Dryomov verify_osdc_wrlocked(osdc); 1876922dab61SIlya Dryomov 1877922dab61SIlya Dryomov erase_linger_osdc(&osdc->linger_requests, lreq); 1878922dab61SIlya Dryomov linger_put(lreq); 1879922dab61SIlya Dryomov } 1880922dab61SIlya Dryomov 1881922dab61SIlya Dryomov static void cancel_linger_request(struct ceph_osd_request *req) 1882922dab61SIlya Dryomov { 1883922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 1884922dab61SIlya Dryomov 1885922dab61SIlya Dryomov WARN_ON(!req->r_linger); 1886922dab61SIlya Dryomov cancel_request(req); 1887922dab61SIlya Dryomov linger_put(lreq); 1888922dab61SIlya Dryomov } 1889922dab61SIlya Dryomov 1890922dab61SIlya Dryomov struct linger_work { 1891922dab61SIlya Dryomov struct work_struct work; 1892922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 1893922dab61SIlya Dryomov 1894922dab61SIlya Dryomov union { 1895922dab61SIlya Dryomov struct { 1896922dab61SIlya Dryomov u64 notify_id; 1897922dab61SIlya Dryomov u64 notifier_id; 1898922dab61SIlya Dryomov void *payload; /* points into @msg front */ 1899922dab61SIlya Dryomov size_t payload_len; 1900922dab61SIlya Dryomov 1901922dab61SIlya Dryomov struct ceph_msg *msg; /* for ceph_msg_put() */ 1902922dab61SIlya Dryomov } notify; 1903922dab61SIlya Dryomov struct { 1904922dab61SIlya Dryomov int err; 1905922dab61SIlya Dryomov } error; 1906922dab61SIlya Dryomov }; 1907922dab61SIlya Dryomov }; 1908922dab61SIlya Dryomov 1909922dab61SIlya Dryomov static struct linger_work *lwork_alloc(struct ceph_osd_linger_request *lreq, 1910922dab61SIlya Dryomov work_func_t workfn) 1911922dab61SIlya Dryomov { 1912922dab61SIlya Dryomov struct linger_work *lwork; 1913922dab61SIlya Dryomov 1914922dab61SIlya Dryomov lwork = kzalloc(sizeof(*lwork), GFP_NOIO); 1915922dab61SIlya Dryomov if (!lwork) 1916922dab61SIlya Dryomov return NULL; 1917922dab61SIlya Dryomov 1918922dab61SIlya Dryomov INIT_WORK(&lwork->work, workfn); 1919922dab61SIlya Dryomov lwork->lreq = linger_get(lreq); 1920922dab61SIlya Dryomov 1921922dab61SIlya Dryomov return lwork; 1922922dab61SIlya Dryomov } 1923922dab61SIlya Dryomov 1924922dab61SIlya Dryomov static void lwork_free(struct linger_work *lwork) 1925922dab61SIlya Dryomov { 1926922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 1927922dab61SIlya Dryomov 1928922dab61SIlya Dryomov linger_put(lreq); 1929922dab61SIlya Dryomov kfree(lwork); 1930922dab61SIlya Dryomov } 1931922dab61SIlya Dryomov 1932922dab61SIlya Dryomov static void lwork_queue(struct linger_work *lwork) 1933922dab61SIlya Dryomov { 1934922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 1935922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 1936922dab61SIlya Dryomov 1937922dab61SIlya Dryomov verify_lreq_locked(lreq); 1938922dab61SIlya Dryomov queue_work(osdc->notify_wq, &lwork->work); 1939922dab61SIlya Dryomov } 1940922dab61SIlya Dryomov 1941922dab61SIlya Dryomov static void do_watch_notify(struct work_struct *w) 1942922dab61SIlya Dryomov { 1943922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 1944922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 1945922dab61SIlya Dryomov 1946922dab61SIlya Dryomov if (!linger_registered(lreq)) { 1947922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 1948922dab61SIlya Dryomov goto out; 1949922dab61SIlya Dryomov } 1950922dab61SIlya Dryomov 195119079203SIlya Dryomov WARN_ON(!lreq->is_watch); 1952922dab61SIlya Dryomov dout("%s lreq %p notify_id %llu notifier_id %llu payload_len %zu\n", 1953922dab61SIlya Dryomov __func__, lreq, lwork->notify.notify_id, lwork->notify.notifier_id, 1954922dab61SIlya Dryomov lwork->notify.payload_len); 1955922dab61SIlya Dryomov lreq->wcb(lreq->data, lwork->notify.notify_id, lreq->linger_id, 1956922dab61SIlya Dryomov lwork->notify.notifier_id, lwork->notify.payload, 1957922dab61SIlya Dryomov lwork->notify.payload_len); 1958922dab61SIlya Dryomov 1959922dab61SIlya Dryomov out: 1960922dab61SIlya Dryomov ceph_msg_put(lwork->notify.msg); 1961922dab61SIlya Dryomov lwork_free(lwork); 1962922dab61SIlya Dryomov } 1963922dab61SIlya Dryomov 1964922dab61SIlya Dryomov static void do_watch_error(struct work_struct *w) 1965922dab61SIlya Dryomov { 1966922dab61SIlya Dryomov struct linger_work *lwork = container_of(w, struct linger_work, work); 1967922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = lwork->lreq; 1968922dab61SIlya Dryomov 1969922dab61SIlya Dryomov if (!linger_registered(lreq)) { 1970922dab61SIlya Dryomov dout("%s lreq %p not registered\n", __func__, lreq); 1971922dab61SIlya Dryomov goto out; 1972922dab61SIlya Dryomov } 1973922dab61SIlya Dryomov 1974922dab61SIlya Dryomov dout("%s lreq %p err %d\n", __func__, lreq, lwork->error.err); 1975922dab61SIlya Dryomov lreq->errcb(lreq->data, lreq->linger_id, lwork->error.err); 1976922dab61SIlya Dryomov 1977922dab61SIlya Dryomov out: 1978922dab61SIlya Dryomov lwork_free(lwork); 1979922dab61SIlya Dryomov } 1980922dab61SIlya Dryomov 1981922dab61SIlya Dryomov static void queue_watch_error(struct ceph_osd_linger_request *lreq) 1982922dab61SIlya Dryomov { 1983922dab61SIlya Dryomov struct linger_work *lwork; 1984922dab61SIlya Dryomov 1985922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_error); 1986922dab61SIlya Dryomov if (!lwork) { 1987922dab61SIlya Dryomov pr_err("failed to allocate error-lwork\n"); 1988922dab61SIlya Dryomov return; 1989922dab61SIlya Dryomov } 1990922dab61SIlya Dryomov 1991922dab61SIlya Dryomov lwork->error.err = lreq->last_error; 1992922dab61SIlya Dryomov lwork_queue(lwork); 1993922dab61SIlya Dryomov } 1994922dab61SIlya Dryomov 1995922dab61SIlya Dryomov static void linger_reg_commit_complete(struct ceph_osd_linger_request *lreq, 1996922dab61SIlya Dryomov int result) 1997922dab61SIlya Dryomov { 1998922dab61SIlya Dryomov if (!completion_done(&lreq->reg_commit_wait)) { 1999922dab61SIlya Dryomov lreq->reg_commit_error = (result <= 0 ? result : 0); 2000922dab61SIlya Dryomov complete_all(&lreq->reg_commit_wait); 2001922dab61SIlya Dryomov } 2002922dab61SIlya Dryomov } 2003922dab61SIlya Dryomov 2004922dab61SIlya Dryomov static void linger_commit_cb(struct ceph_osd_request *req) 2005922dab61SIlya Dryomov { 2006922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2007922dab61SIlya Dryomov 2008922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2009922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d\n", __func__, lreq, 2010922dab61SIlya Dryomov lreq->linger_id, req->r_result); 2011922dab61SIlya Dryomov WARN_ON(!__linger_registered(lreq)); 2012922dab61SIlya Dryomov linger_reg_commit_complete(lreq, req->r_result); 2013922dab61SIlya Dryomov lreq->committed = true; 2014922dab61SIlya Dryomov 201519079203SIlya Dryomov if (!lreq->is_watch) { 201619079203SIlya Dryomov struct ceph_osd_data *osd_data = 201719079203SIlya Dryomov osd_req_op_data(req, 0, notify, response_data); 201819079203SIlya Dryomov void *p = page_address(osd_data->pages[0]); 201919079203SIlya Dryomov 202019079203SIlya Dryomov WARN_ON(req->r_ops[0].op != CEPH_OSD_OP_NOTIFY || 202119079203SIlya Dryomov osd_data->type != CEPH_OSD_DATA_TYPE_PAGES); 202219079203SIlya Dryomov 202319079203SIlya Dryomov /* make note of the notify_id */ 202419079203SIlya Dryomov if (req->r_ops[0].outdata_len >= sizeof(u64)) { 202519079203SIlya Dryomov lreq->notify_id = ceph_decode_64(&p); 202619079203SIlya Dryomov dout("lreq %p notify_id %llu\n", lreq, 202719079203SIlya Dryomov lreq->notify_id); 202819079203SIlya Dryomov } else { 202919079203SIlya Dryomov dout("lreq %p no notify_id\n", lreq); 203019079203SIlya Dryomov } 203119079203SIlya Dryomov } 203219079203SIlya Dryomov 2033922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2034922dab61SIlya Dryomov linger_put(lreq); 2035922dab61SIlya Dryomov } 2036922dab61SIlya Dryomov 2037922dab61SIlya Dryomov static int normalize_watch_error(int err) 2038922dab61SIlya Dryomov { 2039922dab61SIlya Dryomov /* 2040922dab61SIlya Dryomov * Translate ENOENT -> ENOTCONN so that a delete->disconnection 2041922dab61SIlya Dryomov * notification and a failure to reconnect because we raced with 2042922dab61SIlya Dryomov * the delete appear the same to the user. 2043922dab61SIlya Dryomov */ 2044922dab61SIlya Dryomov if (err == -ENOENT) 2045922dab61SIlya Dryomov err = -ENOTCONN; 2046922dab61SIlya Dryomov 2047922dab61SIlya Dryomov return err; 2048922dab61SIlya Dryomov } 2049922dab61SIlya Dryomov 2050922dab61SIlya Dryomov static void linger_reconnect_cb(struct ceph_osd_request *req) 2051922dab61SIlya Dryomov { 2052922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2053922dab61SIlya Dryomov 2054922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2055922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d last_error %d\n", __func__, 2056922dab61SIlya Dryomov lreq, lreq->linger_id, req->r_result, lreq->last_error); 2057922dab61SIlya Dryomov if (req->r_result < 0) { 2058922dab61SIlya Dryomov if (!lreq->last_error) { 2059922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2060922dab61SIlya Dryomov queue_watch_error(lreq); 2061922dab61SIlya Dryomov } 2062922dab61SIlya Dryomov } 2063922dab61SIlya Dryomov 2064922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2065922dab61SIlya Dryomov linger_put(lreq); 2066922dab61SIlya Dryomov } 2067922dab61SIlya Dryomov 2068922dab61SIlya Dryomov static void send_linger(struct ceph_osd_linger_request *lreq) 2069922dab61SIlya Dryomov { 2070922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->reg_req; 2071922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2072922dab61SIlya Dryomov 2073922dab61SIlya Dryomov verify_osdc_wrlocked(req->r_osdc); 2074922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2075922dab61SIlya Dryomov 2076922dab61SIlya Dryomov if (req->r_osd) 2077922dab61SIlya Dryomov cancel_linger_request(req); 2078922dab61SIlya Dryomov 2079922dab61SIlya Dryomov request_reinit(req); 2080922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 2081922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 2082922dab61SIlya Dryomov req->r_flags = lreq->t.flags; 2083922dab61SIlya Dryomov req->r_mtime = lreq->mtime; 2084922dab61SIlya Dryomov 2085922dab61SIlya Dryomov mutex_lock(&lreq->lock); 208619079203SIlya Dryomov if (lreq->is_watch && lreq->committed) { 2087922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2088922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id); 2089922dab61SIlya Dryomov op->watch.op = CEPH_OSD_WATCH_OP_RECONNECT; 2090922dab61SIlya Dryomov op->watch.gen = ++lreq->register_gen; 2091922dab61SIlya Dryomov dout("lreq %p reconnect register_gen %u\n", lreq, 2092922dab61SIlya Dryomov op->watch.gen); 2093922dab61SIlya Dryomov req->r_callback = linger_reconnect_cb; 2094922dab61SIlya Dryomov } else { 209519079203SIlya Dryomov if (!lreq->is_watch) 209619079203SIlya Dryomov lreq->notify_id = 0; 209719079203SIlya Dryomov else 2098922dab61SIlya Dryomov WARN_ON(op->watch.op != CEPH_OSD_WATCH_OP_WATCH); 2099922dab61SIlya Dryomov dout("lreq %p register\n", lreq); 2100922dab61SIlya Dryomov req->r_callback = linger_commit_cb; 2101922dab61SIlya Dryomov } 2102922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2103922dab61SIlya Dryomov 2104922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2105922dab61SIlya Dryomov req->r_linger = true; 2106922dab61SIlya Dryomov 2107922dab61SIlya Dryomov submit_request(req, true); 2108922dab61SIlya Dryomov } 2109922dab61SIlya Dryomov 2110922dab61SIlya Dryomov static void linger_ping_cb(struct ceph_osd_request *req) 2111922dab61SIlya Dryomov { 2112922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = req->r_priv; 2113922dab61SIlya Dryomov 2114922dab61SIlya Dryomov mutex_lock(&lreq->lock); 2115922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu result %d ping_sent %lu last_error %d\n", 2116922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, req->r_result, lreq->ping_sent, 2117922dab61SIlya Dryomov lreq->last_error); 2118922dab61SIlya Dryomov if (lreq->register_gen == req->r_ops[0].watch.gen) { 2119922dab61SIlya Dryomov if (req->r_result && !lreq->last_error) { 2120922dab61SIlya Dryomov lreq->last_error = normalize_watch_error(req->r_result); 2121922dab61SIlya Dryomov queue_watch_error(lreq); 2122922dab61SIlya Dryomov } 2123922dab61SIlya Dryomov } else { 2124922dab61SIlya Dryomov dout("lreq %p register_gen %u ignoring old pong %u\n", lreq, 2125922dab61SIlya Dryomov lreq->register_gen, req->r_ops[0].watch.gen); 2126922dab61SIlya Dryomov } 2127922dab61SIlya Dryomov 2128922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2129922dab61SIlya Dryomov linger_put(lreq); 2130922dab61SIlya Dryomov } 2131922dab61SIlya Dryomov 2132922dab61SIlya Dryomov static void send_linger_ping(struct ceph_osd_linger_request *lreq) 2133922dab61SIlya Dryomov { 2134922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2135922dab61SIlya Dryomov struct ceph_osd_request *req = lreq->ping_req; 2136922dab61SIlya Dryomov struct ceph_osd_req_op *op = &req->r_ops[0]; 2137922dab61SIlya Dryomov 2138922dab61SIlya Dryomov if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD)) { 2139922dab61SIlya Dryomov dout("%s PAUSERD\n", __func__); 2140922dab61SIlya Dryomov return; 2141922dab61SIlya Dryomov } 2142922dab61SIlya Dryomov 2143922dab61SIlya Dryomov lreq->ping_sent = jiffies; 2144922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu ping_sent %lu register_gen %u\n", 2145922dab61SIlya Dryomov __func__, lreq, lreq->linger_id, lreq->ping_sent, 2146922dab61SIlya Dryomov lreq->register_gen); 2147922dab61SIlya Dryomov 2148922dab61SIlya Dryomov if (req->r_osd) 2149922dab61SIlya Dryomov cancel_linger_request(req); 2150922dab61SIlya Dryomov 2151922dab61SIlya Dryomov request_reinit(req); 2152922dab61SIlya Dryomov target_copy(&req->r_t, &lreq->t); 2153922dab61SIlya Dryomov 2154922dab61SIlya Dryomov WARN_ON(op->op != CEPH_OSD_OP_WATCH || 2155922dab61SIlya Dryomov op->watch.cookie != lreq->linger_id || 2156922dab61SIlya Dryomov op->watch.op != CEPH_OSD_WATCH_OP_PING); 2157922dab61SIlya Dryomov op->watch.gen = lreq->register_gen; 2158922dab61SIlya Dryomov req->r_callback = linger_ping_cb; 2159922dab61SIlya Dryomov req->r_priv = linger_get(lreq); 2160922dab61SIlya Dryomov req->r_linger = true; 2161922dab61SIlya Dryomov 2162922dab61SIlya Dryomov ceph_osdc_get_request(req); 2163922dab61SIlya Dryomov account_request(req); 2164922dab61SIlya Dryomov req->r_tid = atomic64_inc_return(&osdc->last_tid); 2165922dab61SIlya Dryomov link_request(lreq->osd, req); 2166922dab61SIlya Dryomov send_request(req); 2167922dab61SIlya Dryomov } 2168922dab61SIlya Dryomov 2169922dab61SIlya Dryomov static void linger_submit(struct ceph_osd_linger_request *lreq) 2170922dab61SIlya Dryomov { 2171922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2172922dab61SIlya Dryomov struct ceph_osd *osd; 2173922dab61SIlya Dryomov 2174922dab61SIlya Dryomov calc_target(osdc, &lreq->t, &lreq->last_force_resend, false); 2175922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 2176922dab61SIlya Dryomov link_linger(osd, lreq); 2177922dab61SIlya Dryomov 2178922dab61SIlya Dryomov send_linger(lreq); 2179922dab61SIlya Dryomov } 2180922dab61SIlya Dryomov 2181922dab61SIlya Dryomov /* 2182922dab61SIlya Dryomov * @lreq has to be both registered and linked. 2183922dab61SIlya Dryomov */ 2184922dab61SIlya Dryomov static void __linger_cancel(struct ceph_osd_linger_request *lreq) 2185922dab61SIlya Dryomov { 218619079203SIlya Dryomov if (lreq->is_watch && lreq->ping_req->r_osd) 2187922dab61SIlya Dryomov cancel_linger_request(lreq->ping_req); 2188922dab61SIlya Dryomov if (lreq->reg_req->r_osd) 2189922dab61SIlya Dryomov cancel_linger_request(lreq->reg_req); 2190922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 2191922dab61SIlya Dryomov linger_unregister(lreq); 2192922dab61SIlya Dryomov } 2193922dab61SIlya Dryomov 2194922dab61SIlya Dryomov static void linger_cancel(struct ceph_osd_linger_request *lreq) 2195922dab61SIlya Dryomov { 2196922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2197922dab61SIlya Dryomov 2198922dab61SIlya Dryomov down_write(&osdc->lock); 2199922dab61SIlya Dryomov if (__linger_registered(lreq)) 2200922dab61SIlya Dryomov __linger_cancel(lreq); 2201922dab61SIlya Dryomov up_write(&osdc->lock); 2202922dab61SIlya Dryomov } 2203922dab61SIlya Dryomov 2204922dab61SIlya Dryomov static int linger_reg_commit_wait(struct ceph_osd_linger_request *lreq) 2205922dab61SIlya Dryomov { 2206922dab61SIlya Dryomov int ret; 2207922dab61SIlya Dryomov 2208922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 2209922dab61SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->reg_commit_wait); 2210922dab61SIlya Dryomov return ret ?: lreq->reg_commit_error; 2211922dab61SIlya Dryomov } 2212922dab61SIlya Dryomov 221319079203SIlya Dryomov static int linger_notify_finish_wait(struct ceph_osd_linger_request *lreq) 221419079203SIlya Dryomov { 221519079203SIlya Dryomov int ret; 221619079203SIlya Dryomov 221719079203SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, lreq->linger_id); 221819079203SIlya Dryomov ret = wait_for_completion_interruptible(&lreq->notify_finish_wait); 221919079203SIlya Dryomov return ret ?: lreq->notify_finish_error; 222019079203SIlya Dryomov } 222119079203SIlya Dryomov 2222922dab61SIlya Dryomov /* 2223fbca9635SIlya Dryomov * Timeout callback, called every N seconds. When 1 or more OSD 2224fbca9635SIlya Dryomov * requests has been active for more than N seconds, we send a keepalive 2225fbca9635SIlya Dryomov * (tag + timestamp) to its OSD to ensure any communications channel 2226fbca9635SIlya Dryomov * reset is detected. 22273d14c5d2SYehuda Sadeh */ 22283d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 22293d14c5d2SYehuda Sadeh { 22303d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 22313d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 2232a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 22335aea3dcdSIlya Dryomov unsigned long cutoff = jiffies - opts->osd_keepalive_timeout; 22345aea3dcdSIlya Dryomov LIST_HEAD(slow_osds); 22355aea3dcdSIlya Dryomov struct rb_node *n, *p; 22363d14c5d2SYehuda Sadeh 22375aea3dcdSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 22385aea3dcdSIlya Dryomov down_write(&osdc->lock); 22393d14c5d2SYehuda Sadeh 22403d14c5d2SYehuda Sadeh /* 22413d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 22423d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 22433d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 22443d14c5d2SYehuda Sadeh */ 22455aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 22465aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 22475aea3dcdSIlya Dryomov bool found = false; 22483d14c5d2SYehuda Sadeh 22495aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 22505aea3dcdSIlya Dryomov struct ceph_osd_request *req = 22515aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 22525aea3dcdSIlya Dryomov 22535aea3dcdSIlya Dryomov if (time_before(req->r_stamp, cutoff)) { 22545aea3dcdSIlya Dryomov dout(" req %p tid %llu on osd%d is laggy\n", 22555aea3dcdSIlya Dryomov req, req->r_tid, osd->o_osd); 22565aea3dcdSIlya Dryomov found = true; 22575aea3dcdSIlya Dryomov } 22585aea3dcdSIlya Dryomov } 2259922dab61SIlya Dryomov for (p = rb_first(&osd->o_linger_requests); p; p = rb_next(p)) { 2260922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2261922dab61SIlya Dryomov rb_entry(p, struct ceph_osd_linger_request, node); 2262922dab61SIlya Dryomov 2263922dab61SIlya Dryomov dout(" lreq %p linger_id %llu is served by osd%d\n", 2264922dab61SIlya Dryomov lreq, lreq->linger_id, osd->o_osd); 2265922dab61SIlya Dryomov found = true; 2266922dab61SIlya Dryomov 2267922dab61SIlya Dryomov mutex_lock(&lreq->lock); 226819079203SIlya Dryomov if (lreq->is_watch && lreq->committed && !lreq->last_error) 2269922dab61SIlya Dryomov send_linger_ping(lreq); 2270922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 2271922dab61SIlya Dryomov } 22725aea3dcdSIlya Dryomov 22735aea3dcdSIlya Dryomov if (found) 22743d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 22753d14c5d2SYehuda Sadeh } 22765aea3dcdSIlya Dryomov 22775aea3dcdSIlya Dryomov if (atomic_read(&osdc->num_homeless) || !list_empty(&slow_osds)) 22785aea3dcdSIlya Dryomov maybe_request_map(osdc); 22795aea3dcdSIlya Dryomov 22803d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 22815aea3dcdSIlya Dryomov struct ceph_osd *osd = list_first_entry(&slow_osds, 22825aea3dcdSIlya Dryomov struct ceph_osd, 22833d14c5d2SYehuda Sadeh o_keepalive_item); 22843d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 22853d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 22863d14c5d2SYehuda Sadeh } 22873d14c5d2SYehuda Sadeh 22885aea3dcdSIlya Dryomov up_write(&osdc->lock); 2289fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 2290fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 22913d14c5d2SYehuda Sadeh } 22923d14c5d2SYehuda Sadeh 22933d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 22943d14c5d2SYehuda Sadeh { 22953d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 22963d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 22973d14c5d2SYehuda Sadeh osds_timeout_work.work); 2298a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 229942a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 23003d14c5d2SYehuda Sadeh 230142a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 23025aea3dcdSIlya Dryomov down_write(&osdc->lock); 230342a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 230442a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 230542a2c09fSIlya Dryomov break; 230642a2c09fSIlya Dryomov 23075aea3dcdSIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_requests)); 2308922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osd->o_linger_requests)); 23095aea3dcdSIlya Dryomov close_osd(osd); 231042a2c09fSIlya Dryomov } 231142a2c09fSIlya Dryomov 23125aea3dcdSIlya Dryomov up_write(&osdc->lock); 23133d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 23143d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 23153d14c5d2SYehuda Sadeh } 23163d14c5d2SYehuda Sadeh 2317205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 2318205ee118SIlya Dryomov struct ceph_object_locator *oloc) 2319205ee118SIlya Dryomov { 2320205ee118SIlya Dryomov u8 struct_v, struct_cv; 2321205ee118SIlya Dryomov u32 len; 2322205ee118SIlya Dryomov void *struct_end; 2323205ee118SIlya Dryomov int ret = 0; 2324205ee118SIlya Dryomov 2325205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 2326205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 2327205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 2328205ee118SIlya Dryomov if (struct_v < 3) { 2329205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 2330205ee118SIlya Dryomov struct_v, struct_cv); 2331205ee118SIlya Dryomov goto e_inval; 2332205ee118SIlya Dryomov } 2333205ee118SIlya Dryomov if (struct_cv > 6) { 2334205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 2335205ee118SIlya Dryomov struct_v, struct_cv); 2336205ee118SIlya Dryomov goto e_inval; 2337205ee118SIlya Dryomov } 2338205ee118SIlya Dryomov len = ceph_decode_32(p); 2339205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 2340205ee118SIlya Dryomov struct_end = *p + len; 2341205ee118SIlya Dryomov 2342205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 2343205ee118SIlya Dryomov *p += 4; /* skip preferred */ 2344205ee118SIlya Dryomov 2345205ee118SIlya Dryomov len = ceph_decode_32(p); 2346205ee118SIlya Dryomov if (len > 0) { 2347205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 2348205ee118SIlya Dryomov goto e_inval; 2349205ee118SIlya Dryomov } 2350205ee118SIlya Dryomov 2351205ee118SIlya Dryomov if (struct_v >= 5) { 2352205ee118SIlya Dryomov len = ceph_decode_32(p); 2353205ee118SIlya Dryomov if (len > 0) { 2354205ee118SIlya Dryomov pr_warn("ceph_object_locator::nspace is set\n"); 2355205ee118SIlya Dryomov goto e_inval; 2356205ee118SIlya Dryomov } 2357205ee118SIlya Dryomov } 2358205ee118SIlya Dryomov 2359205ee118SIlya Dryomov if (struct_v >= 6) { 2360205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 2361205ee118SIlya Dryomov if (hash != -1) { 2362205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 2363205ee118SIlya Dryomov goto e_inval; 2364205ee118SIlya Dryomov } 2365205ee118SIlya Dryomov } 2366205ee118SIlya Dryomov 2367205ee118SIlya Dryomov /* skip the rest */ 2368205ee118SIlya Dryomov *p = struct_end; 2369205ee118SIlya Dryomov out: 2370205ee118SIlya Dryomov return ret; 2371205ee118SIlya Dryomov 2372205ee118SIlya Dryomov e_inval: 2373205ee118SIlya Dryomov ret = -EINVAL; 2374205ee118SIlya Dryomov goto out; 2375205ee118SIlya Dryomov } 2376205ee118SIlya Dryomov 2377205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 2378205ee118SIlya Dryomov struct ceph_request_redirect *redir) 2379205ee118SIlya Dryomov { 2380205ee118SIlya Dryomov u8 struct_v, struct_cv; 2381205ee118SIlya Dryomov u32 len; 2382205ee118SIlya Dryomov void *struct_end; 2383205ee118SIlya Dryomov int ret; 2384205ee118SIlya Dryomov 2385205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 2386205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 2387205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 2388205ee118SIlya Dryomov if (struct_cv > 1) { 2389205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 2390205ee118SIlya Dryomov struct_v, struct_cv); 2391205ee118SIlya Dryomov goto e_inval; 2392205ee118SIlya Dryomov } 2393205ee118SIlya Dryomov len = ceph_decode_32(p); 2394205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 2395205ee118SIlya Dryomov struct_end = *p + len; 2396205ee118SIlya Dryomov 2397205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 2398205ee118SIlya Dryomov if (ret) 2399205ee118SIlya Dryomov goto out; 2400205ee118SIlya Dryomov 2401205ee118SIlya Dryomov len = ceph_decode_32(p); 2402205ee118SIlya Dryomov if (len > 0) { 2403205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 2404205ee118SIlya Dryomov goto e_inval; 2405205ee118SIlya Dryomov } 2406205ee118SIlya Dryomov 2407205ee118SIlya Dryomov len = ceph_decode_32(p); 2408205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 2409205ee118SIlya Dryomov 2410205ee118SIlya Dryomov /* skip the rest */ 2411205ee118SIlya Dryomov *p = struct_end; 2412205ee118SIlya Dryomov out: 2413205ee118SIlya Dryomov return ret; 2414205ee118SIlya Dryomov 2415205ee118SIlya Dryomov e_inval: 2416205ee118SIlya Dryomov ret = -EINVAL; 2417205ee118SIlya Dryomov goto out; 2418205ee118SIlya Dryomov } 2419205ee118SIlya Dryomov 2420fe5da05eSIlya Dryomov struct MOSDOpReply { 2421fe5da05eSIlya Dryomov struct ceph_pg pgid; 2422fe5da05eSIlya Dryomov u64 flags; 2423fe5da05eSIlya Dryomov int result; 2424fe5da05eSIlya Dryomov u32 epoch; 2425fe5da05eSIlya Dryomov int num_ops; 2426fe5da05eSIlya Dryomov u32 outdata_len[CEPH_OSD_MAX_OPS]; 2427fe5da05eSIlya Dryomov s32 rval[CEPH_OSD_MAX_OPS]; 2428fe5da05eSIlya Dryomov int retry_attempt; 2429fe5da05eSIlya Dryomov struct ceph_eversion replay_version; 2430fe5da05eSIlya Dryomov u64 user_version; 2431fe5da05eSIlya Dryomov struct ceph_request_redirect redirect; 2432fe5da05eSIlya Dryomov }; 243325845472SSage Weil 2434fe5da05eSIlya Dryomov static int decode_MOSDOpReply(const struct ceph_msg *msg, struct MOSDOpReply *m) 24353d14c5d2SYehuda Sadeh { 2436fe5da05eSIlya Dryomov void *p = msg->front.iov_base; 2437fe5da05eSIlya Dryomov void *const end = p + msg->front.iov_len; 2438fe5da05eSIlya Dryomov u16 version = le16_to_cpu(msg->hdr.version); 2439fe5da05eSIlya Dryomov struct ceph_eversion bad_replay_version; 2440b0b31a8fSIlya Dryomov u8 decode_redir; 2441fe5da05eSIlya Dryomov u32 len; 2442fe5da05eSIlya Dryomov int ret; 2443fe5da05eSIlya Dryomov int i; 24443d14c5d2SYehuda Sadeh 2445fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, len, e_inval); 2446fe5da05eSIlya Dryomov ceph_decode_need(&p, end, len, e_inval); 2447fe5da05eSIlya Dryomov p += len; /* skip oid */ 24481b83bef2SSage Weil 2449fe5da05eSIlya Dryomov ret = ceph_decode_pgid(&p, end, &m->pgid); 2450fe5da05eSIlya Dryomov if (ret) 2451fe5da05eSIlya Dryomov return ret; 24521b83bef2SSage Weil 2453fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->flags, e_inval); 2454fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->result, e_inval); 2455fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(bad_replay_version), e_inval); 2456fe5da05eSIlya Dryomov memcpy(&bad_replay_version, p, sizeof(bad_replay_version)); 2457fe5da05eSIlya Dryomov p += sizeof(bad_replay_version); 2458fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->epoch, e_inval); 24591b83bef2SSage Weil 2460fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->num_ops, e_inval); 2461fe5da05eSIlya Dryomov if (m->num_ops > ARRAY_SIZE(m->outdata_len)) 2462fe5da05eSIlya Dryomov goto e_inval; 24631b83bef2SSage Weil 2464fe5da05eSIlya Dryomov ceph_decode_need(&p, end, m->num_ops * sizeof(struct ceph_osd_op), 2465fe5da05eSIlya Dryomov e_inval); 2466fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) { 24671b83bef2SSage Weil struct ceph_osd_op *op = p; 24681b83bef2SSage Weil 2469fe5da05eSIlya Dryomov m->outdata_len[i] = le32_to_cpu(op->payload_len); 24701b83bef2SSage Weil p += sizeof(*op); 24711b83bef2SSage Weil } 2472fe5da05eSIlya Dryomov 2473fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->retry_attempt, e_inval); 2474fe5da05eSIlya Dryomov for (i = 0; i < m->num_ops; i++) 2475fe5da05eSIlya Dryomov ceph_decode_32_safe(&p, end, m->rval[i], e_inval); 2476fe5da05eSIlya Dryomov 2477fe5da05eSIlya Dryomov if (version >= 5) { 2478fe5da05eSIlya Dryomov ceph_decode_need(&p, end, sizeof(m->replay_version), e_inval); 2479fe5da05eSIlya Dryomov memcpy(&m->replay_version, p, sizeof(m->replay_version)); 2480fe5da05eSIlya Dryomov p += sizeof(m->replay_version); 2481fe5da05eSIlya Dryomov ceph_decode_64_safe(&p, end, m->user_version, e_inval); 2482fe5da05eSIlya Dryomov } else { 2483fe5da05eSIlya Dryomov m->replay_version = bad_replay_version; /* struct */ 2484fe5da05eSIlya Dryomov m->user_version = le64_to_cpu(m->replay_version.version); 24851b83bef2SSage Weil } 24861b83bef2SSage Weil 2487fe5da05eSIlya Dryomov if (version >= 6) { 2488fe5da05eSIlya Dryomov if (version >= 7) 2489fe5da05eSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, e_inval); 2490b0b31a8fSIlya Dryomov else 2491b0b31a8fSIlya Dryomov decode_redir = 1; 2492b0b31a8fSIlya Dryomov } else { 2493b0b31a8fSIlya Dryomov decode_redir = 0; 2494b0b31a8fSIlya Dryomov } 2495b0b31a8fSIlya Dryomov 2496b0b31a8fSIlya Dryomov if (decode_redir) { 2497fe5da05eSIlya Dryomov ret = ceph_redirect_decode(&p, end, &m->redirect); 2498fe5da05eSIlya Dryomov if (ret) 2499fe5da05eSIlya Dryomov return ret; 2500205ee118SIlya Dryomov } else { 2501fe5da05eSIlya Dryomov ceph_oloc_init(&m->redirect.oloc); 2502205ee118SIlya Dryomov } 2503205ee118SIlya Dryomov 2504fe5da05eSIlya Dryomov return 0; 2505205ee118SIlya Dryomov 2506fe5da05eSIlya Dryomov e_inval: 2507fe5da05eSIlya Dryomov return -EINVAL; 2508fe5da05eSIlya Dryomov } 2509fe5da05eSIlya Dryomov 2510fe5da05eSIlya Dryomov /* 2511fe5da05eSIlya Dryomov * We are done with @req if 2512fe5da05eSIlya Dryomov * - @m is a safe reply, or 2513fe5da05eSIlya Dryomov * - @m is an unsafe reply and we didn't want a safe one 2514fe5da05eSIlya Dryomov */ 2515fe5da05eSIlya Dryomov static bool done_request(const struct ceph_osd_request *req, 2516fe5da05eSIlya Dryomov const struct MOSDOpReply *m) 2517fe5da05eSIlya Dryomov { 2518fe5da05eSIlya Dryomov return (m->result < 0 || 2519fe5da05eSIlya Dryomov (m->flags & CEPH_OSD_FLAG_ONDISK) || 2520fe5da05eSIlya Dryomov !(req->r_flags & CEPH_OSD_FLAG_ONDISK)); 2521fe5da05eSIlya Dryomov } 2522fe5da05eSIlya Dryomov 2523fe5da05eSIlya Dryomov /* 2524fe5da05eSIlya Dryomov * handle osd op reply. either call the callback if it is specified, 2525fe5da05eSIlya Dryomov * or do the completion to wake up the waiting thread. 2526fe5da05eSIlya Dryomov * 2527fe5da05eSIlya Dryomov * ->r_unsafe_callback is set? yes no 2528fe5da05eSIlya Dryomov * 2529fe5da05eSIlya Dryomov * first reply is OK (needed r_cb/r_completion, r_cb/r_completion, 2530fe5da05eSIlya Dryomov * any or needed/got safe) r_safe_completion r_safe_completion 2531fe5da05eSIlya Dryomov * 2532fe5da05eSIlya Dryomov * first reply is unsafe r_unsafe_cb(true) (nothing) 2533fe5da05eSIlya Dryomov * 2534fe5da05eSIlya Dryomov * when we get the safe reply r_unsafe_cb(false), r_cb/r_completion, 2535fe5da05eSIlya Dryomov * r_safe_completion r_safe_completion 2536fe5da05eSIlya Dryomov */ 25375aea3dcdSIlya Dryomov static void handle_reply(struct ceph_osd *osd, struct ceph_msg *msg) 2538fe5da05eSIlya Dryomov { 25395aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 2540fe5da05eSIlya Dryomov struct ceph_osd_request *req; 2541fe5da05eSIlya Dryomov struct MOSDOpReply m; 2542fe5da05eSIlya Dryomov u64 tid = le64_to_cpu(msg->hdr.tid); 2543fe5da05eSIlya Dryomov u32 data_len = 0; 2544fe5da05eSIlya Dryomov bool already_acked; 2545fe5da05eSIlya Dryomov int ret; 2546fe5da05eSIlya Dryomov int i; 2547fe5da05eSIlya Dryomov 2548fe5da05eSIlya Dryomov dout("%s msg %p tid %llu\n", __func__, msg, tid); 2549fe5da05eSIlya Dryomov 25505aea3dcdSIlya Dryomov down_read(&osdc->lock); 25515aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 25525aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 25535aea3dcdSIlya Dryomov goto out_unlock_osdc; 2554fe5da05eSIlya Dryomov } 25555aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(msg->hdr.src.num)); 25565aea3dcdSIlya Dryomov 25575aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 25585aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 25595aea3dcdSIlya Dryomov if (!req) { 25605aea3dcdSIlya Dryomov dout("%s osd%d tid %llu unknown\n", __func__, osd->o_osd, tid); 25615aea3dcdSIlya Dryomov goto out_unlock_session; 25625aea3dcdSIlya Dryomov } 2563fe5da05eSIlya Dryomov 2564fe5da05eSIlya Dryomov ret = decode_MOSDOpReply(msg, &m); 2565fe5da05eSIlya Dryomov if (ret) { 2566fe5da05eSIlya Dryomov pr_err("failed to decode MOSDOpReply for tid %llu: %d\n", 2567fe5da05eSIlya Dryomov req->r_tid, ret); 2568fe5da05eSIlya Dryomov ceph_msg_dump(msg); 2569fe5da05eSIlya Dryomov goto fail_request; 2570fe5da05eSIlya Dryomov } 2571fe5da05eSIlya Dryomov dout("%s req %p tid %llu flags 0x%llx pgid %llu.%x epoch %u attempt %d v %u'%llu uv %llu\n", 2572fe5da05eSIlya Dryomov __func__, req, req->r_tid, m.flags, m.pgid.pool, m.pgid.seed, 2573fe5da05eSIlya Dryomov m.epoch, m.retry_attempt, le32_to_cpu(m.replay_version.epoch), 2574fe5da05eSIlya Dryomov le64_to_cpu(m.replay_version.version), m.user_version); 2575fe5da05eSIlya Dryomov 2576fe5da05eSIlya Dryomov if (m.retry_attempt >= 0) { 2577fe5da05eSIlya Dryomov if (m.retry_attempt != req->r_attempts - 1) { 2578fe5da05eSIlya Dryomov dout("req %p tid %llu retry_attempt %d != %d, ignoring\n", 2579fe5da05eSIlya Dryomov req, req->r_tid, m.retry_attempt, 2580fe5da05eSIlya Dryomov req->r_attempts - 1); 25815aea3dcdSIlya Dryomov goto out_unlock_session; 2582fe5da05eSIlya Dryomov } 2583fe5da05eSIlya Dryomov } else { 2584fe5da05eSIlya Dryomov WARN_ON(1); /* MOSDOpReply v4 is assumed */ 2585fe5da05eSIlya Dryomov } 2586fe5da05eSIlya Dryomov 2587fe5da05eSIlya Dryomov if (!ceph_oloc_empty(&m.redirect.oloc)) { 2588fe5da05eSIlya Dryomov dout("req %p tid %llu redirect pool %lld\n", req, req->r_tid, 2589fe5da05eSIlya Dryomov m.redirect.oloc.pool); 25905aea3dcdSIlya Dryomov unlink_request(osd, req); 25915aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 2592205ee118SIlya Dryomov 2593fe5da05eSIlya Dryomov ceph_oloc_copy(&req->r_t.target_oloc, &m.redirect.oloc); 25945aea3dcdSIlya Dryomov req->r_flags |= CEPH_OSD_FLAG_REDIRECTED; 25955aea3dcdSIlya Dryomov req->r_tid = 0; 25965aea3dcdSIlya Dryomov __submit_request(req, false); 25975aea3dcdSIlya Dryomov goto out_unlock_osdc; 2598205ee118SIlya Dryomov } 2599205ee118SIlya Dryomov 2600fe5da05eSIlya Dryomov if (m.num_ops != req->r_num_ops) { 2601fe5da05eSIlya Dryomov pr_err("num_ops %d != %d for tid %llu\n", m.num_ops, 2602fe5da05eSIlya Dryomov req->r_num_ops, req->r_tid); 2603fe5da05eSIlya Dryomov goto fail_request; 2604fe5da05eSIlya Dryomov } 2605fe5da05eSIlya Dryomov for (i = 0; i < req->r_num_ops; i++) { 2606fe5da05eSIlya Dryomov dout(" req %p tid %llu op %d rval %d len %u\n", req, 2607fe5da05eSIlya Dryomov req->r_tid, i, m.rval[i], m.outdata_len[i]); 2608fe5da05eSIlya Dryomov req->r_ops[i].rval = m.rval[i]; 2609fe5da05eSIlya Dryomov req->r_ops[i].outdata_len = m.outdata_len[i]; 2610fe5da05eSIlya Dryomov data_len += m.outdata_len[i]; 2611fe5da05eSIlya Dryomov } 2612fe5da05eSIlya Dryomov if (data_len != le32_to_cpu(msg->hdr.data_len)) { 2613fe5da05eSIlya Dryomov pr_err("sum of lens %u != %u for tid %llu\n", data_len, 2614fe5da05eSIlya Dryomov le32_to_cpu(msg->hdr.data_len), req->r_tid); 2615fe5da05eSIlya Dryomov goto fail_request; 2616fe5da05eSIlya Dryomov } 2617fe5da05eSIlya Dryomov dout("%s req %p tid %llu acked %d result %d data_len %u\n", __func__, 2618fe5da05eSIlya Dryomov req, req->r_tid, req->r_got_reply, m.result, data_len); 26193d14c5d2SYehuda Sadeh 2620fe5da05eSIlya Dryomov already_acked = req->r_got_reply; 2621fe5da05eSIlya Dryomov if (!already_acked) { 2622fe5da05eSIlya Dryomov req->r_result = m.result ?: data_len; 2623fe5da05eSIlya Dryomov req->r_replay_version = m.replay_version; /* struct */ 2624fe5da05eSIlya Dryomov req->r_got_reply = true; 2625fe5da05eSIlya Dryomov } else if (!(m.flags & CEPH_OSD_FLAG_ONDISK)) { 2626fe5da05eSIlya Dryomov dout("req %p tid %llu dup ack\n", req, req->r_tid); 26275aea3dcdSIlya Dryomov goto out_unlock_session; 26283d14c5d2SYehuda Sadeh } 26293d14c5d2SYehuda Sadeh 2630fe5da05eSIlya Dryomov if (done_request(req, &m)) { 26315aea3dcdSIlya Dryomov __finish_request(req); 2632fe5da05eSIlya Dryomov if (req->r_linger) { 2633fe5da05eSIlya Dryomov WARN_ON(req->r_unsafe_callback); 2634922dab61SIlya Dryomov dout("req %p tid %llu cb (locked)\n", req, req->r_tid); 2635922dab61SIlya Dryomov __complete_request(req); 2636fe5da05eSIlya Dryomov } 2637fe5da05eSIlya Dryomov } 26383d14c5d2SYehuda Sadeh 26395aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 26405aea3dcdSIlya Dryomov up_read(&osdc->lock); 26413d14c5d2SYehuda Sadeh 2642fe5da05eSIlya Dryomov if (done_request(req, &m)) { 2643fe5da05eSIlya Dryomov if (already_acked && req->r_unsafe_callback) { 2644fe5da05eSIlya Dryomov dout("req %p tid %llu safe-cb\n", req, req->r_tid); 264561c5d6bfSYan, Zheng req->r_unsafe_callback(req, false); 2646922dab61SIlya Dryomov } else if (!req->r_linger) { 2647fe5da05eSIlya Dryomov dout("req %p tid %llu cb\n", req, req->r_tid); 2648fe5da05eSIlya Dryomov __complete_request(req); 264961c5d6bfSYan, Zheng } 2650fe5da05eSIlya Dryomov } else { 2651fe5da05eSIlya Dryomov if (req->r_unsafe_callback) { 2652fe5da05eSIlya Dryomov dout("req %p tid %llu unsafe-cb\n", req, req->r_tid); 2653fe5da05eSIlya Dryomov req->r_unsafe_callback(req, true); 2654fe5da05eSIlya Dryomov } else { 2655fe5da05eSIlya Dryomov WARN_ON(1); 2656fe5da05eSIlya Dryomov } 2657fe5da05eSIlya Dryomov } 2658fe5da05eSIlya Dryomov if (m.flags & CEPH_OSD_FLAG_ONDISK) 2659fe5da05eSIlya Dryomov complete_all(&req->r_safe_completion); 26603d14c5d2SYehuda Sadeh 26613d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 26623d14c5d2SYehuda Sadeh return; 2663fe5da05eSIlya Dryomov 2664fe5da05eSIlya Dryomov fail_request: 2665fe5da05eSIlya Dryomov req->r_result = -EIO; 26665aea3dcdSIlya Dryomov __finish_request(req); 2667fe5da05eSIlya Dryomov __complete_request(req); 2668fe5da05eSIlya Dryomov complete_all(&req->r_safe_completion); 26695aea3dcdSIlya Dryomov out_unlock_session: 26705aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 26715aea3dcdSIlya Dryomov out_unlock_osdc: 26725aea3dcdSIlya Dryomov up_read(&osdc->lock); 26733d14c5d2SYehuda Sadeh } 26743d14c5d2SYehuda Sadeh 267542c1b124SIlya Dryomov static void set_pool_was_full(struct ceph_osd_client *osdc) 267642c1b124SIlya Dryomov { 267742c1b124SIlya Dryomov struct rb_node *n; 267842c1b124SIlya Dryomov 267942c1b124SIlya Dryomov for (n = rb_first(&osdc->osdmap->pg_pools); n; n = rb_next(n)) { 268042c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 268142c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 268242c1b124SIlya Dryomov 268342c1b124SIlya Dryomov pi->was_full = __pool_full(pi); 268442c1b124SIlya Dryomov } 268542c1b124SIlya Dryomov } 268642c1b124SIlya Dryomov 26875aea3dcdSIlya Dryomov static bool pool_cleared_full(struct ceph_osd_client *osdc, s64 pool_id) 26883d14c5d2SYehuda Sadeh { 26895aea3dcdSIlya Dryomov struct ceph_pg_pool_info *pi; 26903d14c5d2SYehuda Sadeh 26915aea3dcdSIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, pool_id); 26925aea3dcdSIlya Dryomov if (!pi) 26935aea3dcdSIlya Dryomov return false; 26943d14c5d2SYehuda Sadeh 26955aea3dcdSIlya Dryomov return pi->was_full && !__pool_full(pi); 26963d14c5d2SYehuda Sadeh } 26973d14c5d2SYehuda Sadeh 2698922dab61SIlya Dryomov static enum calc_target_result 2699922dab61SIlya Dryomov recalc_linger_target(struct ceph_osd_linger_request *lreq) 2700922dab61SIlya Dryomov { 2701922dab61SIlya Dryomov struct ceph_osd_client *osdc = lreq->osdc; 2702922dab61SIlya Dryomov enum calc_target_result ct_res; 2703922dab61SIlya Dryomov 2704922dab61SIlya Dryomov ct_res = calc_target(osdc, &lreq->t, &lreq->last_force_resend, true); 2705922dab61SIlya Dryomov if (ct_res == CALC_TARGET_NEED_RESEND) { 2706922dab61SIlya Dryomov struct ceph_osd *osd; 2707922dab61SIlya Dryomov 2708922dab61SIlya Dryomov osd = lookup_create_osd(osdc, lreq->t.osd, true); 2709922dab61SIlya Dryomov if (osd != lreq->osd) { 2710922dab61SIlya Dryomov unlink_linger(lreq->osd, lreq); 2711922dab61SIlya Dryomov link_linger(osd, lreq); 2712922dab61SIlya Dryomov } 2713922dab61SIlya Dryomov } 2714922dab61SIlya Dryomov 2715922dab61SIlya Dryomov return ct_res; 2716922dab61SIlya Dryomov } 2717922dab61SIlya Dryomov 27183d14c5d2SYehuda Sadeh /* 27195aea3dcdSIlya Dryomov * Requeue requests whose mapping to an OSD has changed. 27203d14c5d2SYehuda Sadeh */ 27215aea3dcdSIlya Dryomov static void scan_requests(struct ceph_osd *osd, 27225aea3dcdSIlya Dryomov bool force_resend, 27235aea3dcdSIlya Dryomov bool cleared_full, 27245aea3dcdSIlya Dryomov bool check_pool_cleared_full, 27255aea3dcdSIlya Dryomov struct rb_root *need_resend, 27265aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 27273d14c5d2SYehuda Sadeh { 27285aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 27295aea3dcdSIlya Dryomov struct rb_node *n; 27305aea3dcdSIlya Dryomov bool force_resend_writes; 27313d14c5d2SYehuda Sadeh 2732922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; ) { 2733922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 2734922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 2735922dab61SIlya Dryomov enum calc_target_result ct_res; 2736922dab61SIlya Dryomov 2737922dab61SIlya Dryomov n = rb_next(n); /* recalc_linger_target() */ 2738922dab61SIlya Dryomov 2739922dab61SIlya Dryomov dout("%s lreq %p linger_id %llu\n", __func__, lreq, 2740922dab61SIlya Dryomov lreq->linger_id); 2741922dab61SIlya Dryomov ct_res = recalc_linger_target(lreq); 2742922dab61SIlya Dryomov switch (ct_res) { 2743922dab61SIlya Dryomov case CALC_TARGET_NO_ACTION: 2744922dab61SIlya Dryomov force_resend_writes = cleared_full || 2745922dab61SIlya Dryomov (check_pool_cleared_full && 2746922dab61SIlya Dryomov pool_cleared_full(osdc, lreq->t.base_oloc.pool)); 2747922dab61SIlya Dryomov if (!force_resend && !force_resend_writes) 2748922dab61SIlya Dryomov break; 2749922dab61SIlya Dryomov 2750922dab61SIlya Dryomov /* fall through */ 2751922dab61SIlya Dryomov case CALC_TARGET_NEED_RESEND: 2752922dab61SIlya Dryomov /* 2753922dab61SIlya Dryomov * scan_requests() for the previous epoch(s) 2754922dab61SIlya Dryomov * may have already added it to the list, since 2755922dab61SIlya Dryomov * it's not unlinked here. 2756922dab61SIlya Dryomov */ 2757922dab61SIlya Dryomov if (list_empty(&lreq->scan_item)) 2758922dab61SIlya Dryomov list_add_tail(&lreq->scan_item, need_resend_linger); 2759922dab61SIlya Dryomov break; 2760922dab61SIlya Dryomov case CALC_TARGET_POOL_DNE: 2761922dab61SIlya Dryomov break; 2762922dab61SIlya Dryomov } 2763922dab61SIlya Dryomov } 2764922dab61SIlya Dryomov 27655aea3dcdSIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 27665aea3dcdSIlya Dryomov struct ceph_osd_request *req = 27675aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 27685aea3dcdSIlya Dryomov enum calc_target_result ct_res; 2769ab60b16dSAlex Elder 27705aea3dcdSIlya Dryomov n = rb_next(n); /* unlink_request() */ 2771ab60b16dSAlex Elder 27725aea3dcdSIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 27735aea3dcdSIlya Dryomov ct_res = calc_target(osdc, &req->r_t, 27745aea3dcdSIlya Dryomov &req->r_last_force_resend, false); 27755aea3dcdSIlya Dryomov switch (ct_res) { 27765aea3dcdSIlya Dryomov case CALC_TARGET_NO_ACTION: 27775aea3dcdSIlya Dryomov force_resend_writes = cleared_full || 27785aea3dcdSIlya Dryomov (check_pool_cleared_full && 27795aea3dcdSIlya Dryomov pool_cleared_full(osdc, req->r_t.base_oloc.pool)); 27805aea3dcdSIlya Dryomov if (!force_resend && 27815aea3dcdSIlya Dryomov (!(req->r_flags & CEPH_OSD_FLAG_WRITE) || 27825aea3dcdSIlya Dryomov !force_resend_writes)) 27835aea3dcdSIlya Dryomov break; 2784a40c4f10SYehuda Sadeh 27855aea3dcdSIlya Dryomov /* fall through */ 27865aea3dcdSIlya Dryomov case CALC_TARGET_NEED_RESEND: 27875aea3dcdSIlya Dryomov unlink_request(osd, req); 27885aea3dcdSIlya Dryomov insert_request(need_resend, req); 27895aea3dcdSIlya Dryomov break; 27905aea3dcdSIlya Dryomov case CALC_TARGET_POOL_DNE: 27915aea3dcdSIlya Dryomov break; 2792a40c4f10SYehuda Sadeh } 27933d14c5d2SYehuda Sadeh } 27943d14c5d2SYehuda Sadeh } 27956f6c7006SSage Weil 279642c1b124SIlya Dryomov static int handle_one_map(struct ceph_osd_client *osdc, 27975aea3dcdSIlya Dryomov void *p, void *end, bool incremental, 27985aea3dcdSIlya Dryomov struct rb_root *need_resend, 27995aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 280042c1b124SIlya Dryomov { 280142c1b124SIlya Dryomov struct ceph_osdmap *newmap; 280242c1b124SIlya Dryomov struct rb_node *n; 280342c1b124SIlya Dryomov bool skipped_map = false; 280442c1b124SIlya Dryomov bool was_full; 280542c1b124SIlya Dryomov 280642c1b124SIlya Dryomov was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 280742c1b124SIlya Dryomov set_pool_was_full(osdc); 280842c1b124SIlya Dryomov 280942c1b124SIlya Dryomov if (incremental) 281042c1b124SIlya Dryomov newmap = osdmap_apply_incremental(&p, end, osdc->osdmap); 281142c1b124SIlya Dryomov else 281242c1b124SIlya Dryomov newmap = ceph_osdmap_decode(&p, end); 281342c1b124SIlya Dryomov if (IS_ERR(newmap)) 281442c1b124SIlya Dryomov return PTR_ERR(newmap); 281542c1b124SIlya Dryomov 281642c1b124SIlya Dryomov if (newmap != osdc->osdmap) { 281742c1b124SIlya Dryomov /* 281842c1b124SIlya Dryomov * Preserve ->was_full before destroying the old map. 281942c1b124SIlya Dryomov * For pools that weren't in the old map, ->was_full 282042c1b124SIlya Dryomov * should be false. 282142c1b124SIlya Dryomov */ 282242c1b124SIlya Dryomov for (n = rb_first(&newmap->pg_pools); n; n = rb_next(n)) { 282342c1b124SIlya Dryomov struct ceph_pg_pool_info *pi = 282442c1b124SIlya Dryomov rb_entry(n, struct ceph_pg_pool_info, node); 282542c1b124SIlya Dryomov struct ceph_pg_pool_info *old_pi; 282642c1b124SIlya Dryomov 282742c1b124SIlya Dryomov old_pi = ceph_pg_pool_by_id(osdc->osdmap, pi->id); 282842c1b124SIlya Dryomov if (old_pi) 282942c1b124SIlya Dryomov pi->was_full = old_pi->was_full; 283042c1b124SIlya Dryomov else 283142c1b124SIlya Dryomov WARN_ON(pi->was_full); 283242c1b124SIlya Dryomov } 283342c1b124SIlya Dryomov 283442c1b124SIlya Dryomov if (osdc->osdmap->epoch && 283542c1b124SIlya Dryomov osdc->osdmap->epoch + 1 < newmap->epoch) { 283642c1b124SIlya Dryomov WARN_ON(incremental); 283742c1b124SIlya Dryomov skipped_map = true; 283842c1b124SIlya Dryomov } 283942c1b124SIlya Dryomov 284042c1b124SIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 284142c1b124SIlya Dryomov osdc->osdmap = newmap; 284242c1b124SIlya Dryomov } 284342c1b124SIlya Dryomov 284442c1b124SIlya Dryomov was_full &= !ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 28455aea3dcdSIlya Dryomov scan_requests(&osdc->homeless_osd, skipped_map, was_full, true, 28465aea3dcdSIlya Dryomov need_resend, need_resend_linger); 28475aea3dcdSIlya Dryomov 28485aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; ) { 28495aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 28505aea3dcdSIlya Dryomov 28515aea3dcdSIlya Dryomov n = rb_next(n); /* close_osd() */ 28525aea3dcdSIlya Dryomov 28535aea3dcdSIlya Dryomov scan_requests(osd, skipped_map, was_full, true, need_resend, 28545aea3dcdSIlya Dryomov need_resend_linger); 28555aea3dcdSIlya Dryomov if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 28565aea3dcdSIlya Dryomov memcmp(&osd->o_con.peer_addr, 28575aea3dcdSIlya Dryomov ceph_osd_addr(osdc->osdmap, osd->o_osd), 28585aea3dcdSIlya Dryomov sizeof(struct ceph_entity_addr))) 28595aea3dcdSIlya Dryomov close_osd(osd); 28605aea3dcdSIlya Dryomov } 286142c1b124SIlya Dryomov 286242c1b124SIlya Dryomov return 0; 286342c1b124SIlya Dryomov } 28646f6c7006SSage Weil 28655aea3dcdSIlya Dryomov static void kick_requests(struct ceph_osd_client *osdc, 28665aea3dcdSIlya Dryomov struct rb_root *need_resend, 28675aea3dcdSIlya Dryomov struct list_head *need_resend_linger) 28685aea3dcdSIlya Dryomov { 2869922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq, *nlreq; 28705aea3dcdSIlya Dryomov struct rb_node *n; 28715aea3dcdSIlya Dryomov 28725aea3dcdSIlya Dryomov for (n = rb_first(need_resend); n; ) { 28735aea3dcdSIlya Dryomov struct ceph_osd_request *req = 28745aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 28755aea3dcdSIlya Dryomov struct ceph_osd *osd; 28765aea3dcdSIlya Dryomov 28775aea3dcdSIlya Dryomov n = rb_next(n); 28785aea3dcdSIlya Dryomov erase_request(need_resend, req); /* before link_request() */ 28795aea3dcdSIlya Dryomov 28805aea3dcdSIlya Dryomov WARN_ON(req->r_osd); 28815aea3dcdSIlya Dryomov calc_target(osdc, &req->r_t, NULL, false); 28825aea3dcdSIlya Dryomov osd = lookup_create_osd(osdc, req->r_t.osd, true); 28835aea3dcdSIlya Dryomov link_request(osd, req); 28845aea3dcdSIlya Dryomov if (!req->r_linger) { 28855aea3dcdSIlya Dryomov if (!osd_homeless(osd) && !req->r_t.paused) 28865aea3dcdSIlya Dryomov send_request(req); 2887922dab61SIlya Dryomov } else { 2888922dab61SIlya Dryomov cancel_linger_request(req); 28895aea3dcdSIlya Dryomov } 28905aea3dcdSIlya Dryomov } 2891922dab61SIlya Dryomov 2892922dab61SIlya Dryomov list_for_each_entry_safe(lreq, nlreq, need_resend_linger, scan_item) { 2893922dab61SIlya Dryomov if (!osd_homeless(lreq->osd)) 2894922dab61SIlya Dryomov send_linger(lreq); 2895922dab61SIlya Dryomov 2896922dab61SIlya Dryomov list_del_init(&lreq->scan_item); 2897922dab61SIlya Dryomov } 28985aea3dcdSIlya Dryomov } 28995aea3dcdSIlya Dryomov 29003d14c5d2SYehuda Sadeh /* 29013d14c5d2SYehuda Sadeh * Process updated osd map. 29023d14c5d2SYehuda Sadeh * 29033d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 29043d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 29053d14c5d2SYehuda Sadeh * off to different OSDs as needed. 29063d14c5d2SYehuda Sadeh */ 29073d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 29083d14c5d2SYehuda Sadeh { 290942c1b124SIlya Dryomov void *p = msg->front.iov_base; 291042c1b124SIlya Dryomov void *const end = p + msg->front.iov_len; 29113d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 29123d14c5d2SYehuda Sadeh u32 epoch; 29133d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 29145aea3dcdSIlya Dryomov struct rb_root need_resend = RB_ROOT; 29155aea3dcdSIlya Dryomov LIST_HEAD(need_resend_linger); 291642c1b124SIlya Dryomov bool handled_incremental = false; 291742c1b124SIlya Dryomov bool was_pauserd, was_pausewr; 291842c1b124SIlya Dryomov bool pauserd, pausewr; 291942c1b124SIlya Dryomov int err; 29203d14c5d2SYehuda Sadeh 292142c1b124SIlya Dryomov dout("%s have %u\n", __func__, osdc->osdmap->epoch); 29225aea3dcdSIlya Dryomov down_write(&osdc->lock); 29233d14c5d2SYehuda Sadeh 29243d14c5d2SYehuda Sadeh /* verify fsid */ 29253d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 29263d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 29273d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 292842c1b124SIlya Dryomov goto bad; 29293d14c5d2SYehuda Sadeh 293042c1b124SIlya Dryomov was_pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 293142c1b124SIlya Dryomov was_pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 293242c1b124SIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 293342c1b124SIlya Dryomov have_pool_full(osdc); 29349a1ea2dbSJosh Durgin 29353d14c5d2SYehuda Sadeh /* incremental maps */ 29363d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 29373d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 29383d14c5d2SYehuda Sadeh while (nr_maps > 0) { 29393d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 29403d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 29413d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 29423d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 294342c1b124SIlya Dryomov if (osdc->osdmap->epoch && 294442c1b124SIlya Dryomov osdc->osdmap->epoch + 1 == epoch) { 29453d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 29463d14c5d2SYehuda Sadeh epoch, maplen); 29475aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, true, 29485aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 294942c1b124SIlya Dryomov if (err) 29503d14c5d2SYehuda Sadeh goto bad; 295142c1b124SIlya Dryomov handled_incremental = true; 29523d14c5d2SYehuda Sadeh } else { 29533d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 29543d14c5d2SYehuda Sadeh epoch, maplen); 29553d14c5d2SYehuda Sadeh } 295642c1b124SIlya Dryomov p += maplen; 29573d14c5d2SYehuda Sadeh nr_maps--; 29583d14c5d2SYehuda Sadeh } 295942c1b124SIlya Dryomov if (handled_incremental) 29603d14c5d2SYehuda Sadeh goto done; 29613d14c5d2SYehuda Sadeh 29623d14c5d2SYehuda Sadeh /* full maps */ 29633d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 29643d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 29653d14c5d2SYehuda Sadeh while (nr_maps) { 29663d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 29673d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 29683d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 29693d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 29703d14c5d2SYehuda Sadeh if (nr_maps > 1) { 29713d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 29723d14c5d2SYehuda Sadeh epoch, maplen); 2973e5253a7bSIlya Dryomov } else if (osdc->osdmap->epoch >= epoch) { 29743d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 29753d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 29763d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 29773d14c5d2SYehuda Sadeh } else { 29783d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 29795aea3dcdSIlya Dryomov err = handle_one_map(osdc, p, p + maplen, false, 29805aea3dcdSIlya Dryomov &need_resend, &need_resend_linger); 298142c1b124SIlya Dryomov if (err) 29823d14c5d2SYehuda Sadeh goto bad; 29833d14c5d2SYehuda Sadeh } 29843d14c5d2SYehuda Sadeh p += maplen; 29853d14c5d2SYehuda Sadeh nr_maps--; 29863d14c5d2SYehuda Sadeh } 29873d14c5d2SYehuda Sadeh 29883d14c5d2SYehuda Sadeh done: 2989cd634fb6SSage Weil /* 2990cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 2991cd634fb6SSage Weil * we find out when we are no longer full and stop returning 2992cd634fb6SSage Weil * ENOSPC. 2993cd634fb6SSage Weil */ 299442c1b124SIlya Dryomov pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 299542c1b124SIlya Dryomov pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 299642c1b124SIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 299742c1b124SIlya Dryomov have_pool_full(osdc); 299842c1b124SIlya Dryomov if (was_pauserd || was_pausewr || pauserd || pausewr) 299942c1b124SIlya Dryomov maybe_request_map(osdc); 3000cd634fb6SSage Weil 30015aea3dcdSIlya Dryomov kick_requests(osdc, &need_resend, &need_resend_linger); 300242c1b124SIlya Dryomov 300342c1b124SIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 300442c1b124SIlya Dryomov osdc->osdmap->epoch); 30055aea3dcdSIlya Dryomov up_write(&osdc->lock); 30063d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 30073d14c5d2SYehuda Sadeh return; 30083d14c5d2SYehuda Sadeh 30093d14c5d2SYehuda Sadeh bad: 30103d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 30113d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 30125aea3dcdSIlya Dryomov up_write(&osdc->lock); 30135aea3dcdSIlya Dryomov } 30145aea3dcdSIlya Dryomov 30155aea3dcdSIlya Dryomov /* 30165aea3dcdSIlya Dryomov * Resubmit requests pending on the given osd. 30175aea3dcdSIlya Dryomov */ 30185aea3dcdSIlya Dryomov static void kick_osd_requests(struct ceph_osd *osd) 30195aea3dcdSIlya Dryomov { 30205aea3dcdSIlya Dryomov struct rb_node *n; 30215aea3dcdSIlya Dryomov 3022922dab61SIlya Dryomov for (n = rb_first(&osd->o_requests); n; ) { 30235aea3dcdSIlya Dryomov struct ceph_osd_request *req = 30245aea3dcdSIlya Dryomov rb_entry(n, struct ceph_osd_request, r_node); 30255aea3dcdSIlya Dryomov 3026922dab61SIlya Dryomov n = rb_next(n); /* cancel_linger_request() */ 3027922dab61SIlya Dryomov 30285aea3dcdSIlya Dryomov if (!req->r_linger) { 30295aea3dcdSIlya Dryomov if (!req->r_t.paused) 30305aea3dcdSIlya Dryomov send_request(req); 3031922dab61SIlya Dryomov } else { 3032922dab61SIlya Dryomov cancel_linger_request(req); 30335aea3dcdSIlya Dryomov } 30345aea3dcdSIlya Dryomov } 3035922dab61SIlya Dryomov for (n = rb_first(&osd->o_linger_requests); n; n = rb_next(n)) { 3036922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq = 3037922dab61SIlya Dryomov rb_entry(n, struct ceph_osd_linger_request, node); 3038922dab61SIlya Dryomov 3039922dab61SIlya Dryomov send_linger(lreq); 3040922dab61SIlya Dryomov } 30415aea3dcdSIlya Dryomov } 30425aea3dcdSIlya Dryomov 30435aea3dcdSIlya Dryomov /* 30445aea3dcdSIlya Dryomov * If the osd connection drops, we need to resubmit all requests. 30455aea3dcdSIlya Dryomov */ 30465aea3dcdSIlya Dryomov static void osd_fault(struct ceph_connection *con) 30475aea3dcdSIlya Dryomov { 30485aea3dcdSIlya Dryomov struct ceph_osd *osd = con->private; 30495aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 30505aea3dcdSIlya Dryomov 30515aea3dcdSIlya Dryomov dout("%s osd %p osd%d\n", __func__, osd, osd->o_osd); 30525aea3dcdSIlya Dryomov 30535aea3dcdSIlya Dryomov down_write(&osdc->lock); 30545aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 30555aea3dcdSIlya Dryomov dout("%s osd%d unknown\n", __func__, osd->o_osd); 30565aea3dcdSIlya Dryomov goto out_unlock; 30575aea3dcdSIlya Dryomov } 30585aea3dcdSIlya Dryomov 30595aea3dcdSIlya Dryomov if (!reopen_osd(osd)) 30605aea3dcdSIlya Dryomov kick_osd_requests(osd); 30615aea3dcdSIlya Dryomov maybe_request_map(osdc); 30625aea3dcdSIlya Dryomov 30635aea3dcdSIlya Dryomov out_unlock: 30645aea3dcdSIlya Dryomov up_write(&osdc->lock); 30653d14c5d2SYehuda Sadeh } 30663d14c5d2SYehuda Sadeh 30673d14c5d2SYehuda Sadeh /* 3068a40c4f10SYehuda Sadeh * Process osd watch notifications 3069a40c4f10SYehuda Sadeh */ 30703c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 30713c663bbdSAlex Elder struct ceph_msg *msg) 3072a40c4f10SYehuda Sadeh { 3073922dab61SIlya Dryomov void *p = msg->front.iov_base; 3074922dab61SIlya Dryomov void *const end = p + msg->front.iov_len; 3075922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 3076922dab61SIlya Dryomov struct linger_work *lwork; 3077922dab61SIlya Dryomov u8 proto_ver, opcode; 3078922dab61SIlya Dryomov u64 cookie, notify_id; 3079922dab61SIlya Dryomov u64 notifier_id = 0; 308019079203SIlya Dryomov s32 return_code = 0; 3081922dab61SIlya Dryomov void *payload = NULL; 3082922dab61SIlya Dryomov u32 payload_len = 0; 3083a40c4f10SYehuda Sadeh 3084a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 3085a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 3086a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 3087922dab61SIlya Dryomov p += 8; /* skip ver */ 3088a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 3089a40c4f10SYehuda Sadeh 3090922dab61SIlya Dryomov if (proto_ver >= 1) { 3091922dab61SIlya Dryomov ceph_decode_32_safe(&p, end, payload_len, bad); 3092922dab61SIlya Dryomov ceph_decode_need(&p, end, payload_len, bad); 3093922dab61SIlya Dryomov payload = p; 3094922dab61SIlya Dryomov p += payload_len; 3095a40c4f10SYehuda Sadeh } 3096a40c4f10SYehuda Sadeh 3097922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 2) 309819079203SIlya Dryomov ceph_decode_32_safe(&p, end, return_code, bad); 3099922dab61SIlya Dryomov 3100922dab61SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 3) 3101922dab61SIlya Dryomov ceph_decode_64_safe(&p, end, notifier_id, bad); 3102922dab61SIlya Dryomov 3103922dab61SIlya Dryomov down_read(&osdc->lock); 3104922dab61SIlya Dryomov lreq = lookup_linger_osdc(&osdc->linger_requests, cookie); 3105922dab61SIlya Dryomov if (!lreq) { 3106922dab61SIlya Dryomov dout("%s opcode %d cookie %llu dne\n", __func__, opcode, 3107922dab61SIlya Dryomov cookie); 3108922dab61SIlya Dryomov goto out_unlock_osdc; 3109922dab61SIlya Dryomov } 3110922dab61SIlya Dryomov 3111922dab61SIlya Dryomov mutex_lock(&lreq->lock); 311219079203SIlya Dryomov dout("%s opcode %d cookie %llu lreq %p is_watch %d\n", __func__, 311319079203SIlya Dryomov opcode, cookie, lreq, lreq->is_watch); 3114922dab61SIlya Dryomov if (opcode == CEPH_WATCH_EVENT_DISCONNECT) { 3115922dab61SIlya Dryomov if (!lreq->last_error) { 3116922dab61SIlya Dryomov lreq->last_error = -ENOTCONN; 3117922dab61SIlya Dryomov queue_watch_error(lreq); 3118922dab61SIlya Dryomov } 311919079203SIlya Dryomov } else if (!lreq->is_watch) { 312019079203SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY_COMPLETE */ 312119079203SIlya Dryomov if (lreq->notify_id && lreq->notify_id != notify_id) { 312219079203SIlya Dryomov dout("lreq %p notify_id %llu != %llu, ignoring\n", lreq, 312319079203SIlya Dryomov lreq->notify_id, notify_id); 312419079203SIlya Dryomov } else if (!completion_done(&lreq->notify_finish_wait)) { 312519079203SIlya Dryomov struct ceph_msg_data *data = 312619079203SIlya Dryomov list_first_entry_or_null(&msg->data, 312719079203SIlya Dryomov struct ceph_msg_data, 312819079203SIlya Dryomov links); 312919079203SIlya Dryomov 313019079203SIlya Dryomov if (data) { 313119079203SIlya Dryomov if (lreq->preply_pages) { 313219079203SIlya Dryomov WARN_ON(data->type != 313319079203SIlya Dryomov CEPH_MSG_DATA_PAGES); 313419079203SIlya Dryomov *lreq->preply_pages = data->pages; 313519079203SIlya Dryomov *lreq->preply_len = data->length; 313619079203SIlya Dryomov } else { 313719079203SIlya Dryomov ceph_release_page_vector(data->pages, 313819079203SIlya Dryomov calc_pages_for(0, data->length)); 313919079203SIlya Dryomov } 314019079203SIlya Dryomov } 314119079203SIlya Dryomov lreq->notify_finish_error = return_code; 314219079203SIlya Dryomov complete_all(&lreq->notify_finish_wait); 314319079203SIlya Dryomov } 3144922dab61SIlya Dryomov } else { 3145922dab61SIlya Dryomov /* CEPH_WATCH_EVENT_NOTIFY */ 3146922dab61SIlya Dryomov lwork = lwork_alloc(lreq, do_watch_notify); 3147922dab61SIlya Dryomov if (!lwork) { 3148922dab61SIlya Dryomov pr_err("failed to allocate notify-lwork\n"); 3149922dab61SIlya Dryomov goto out_unlock_lreq; 3150922dab61SIlya Dryomov } 3151922dab61SIlya Dryomov 3152922dab61SIlya Dryomov lwork->notify.notify_id = notify_id; 3153922dab61SIlya Dryomov lwork->notify.notifier_id = notifier_id; 3154922dab61SIlya Dryomov lwork->notify.payload = payload; 3155922dab61SIlya Dryomov lwork->notify.payload_len = payload_len; 3156922dab61SIlya Dryomov lwork->notify.msg = ceph_msg_get(msg); 3157922dab61SIlya Dryomov lwork_queue(lwork); 3158922dab61SIlya Dryomov } 3159922dab61SIlya Dryomov 3160922dab61SIlya Dryomov out_unlock_lreq: 3161922dab61SIlya Dryomov mutex_unlock(&lreq->lock); 3162922dab61SIlya Dryomov out_unlock_osdc: 3163922dab61SIlya Dryomov up_read(&osdc->lock); 3164a40c4f10SYehuda Sadeh return; 3165a40c4f10SYehuda Sadeh 3166a40c4f10SYehuda Sadeh bad: 3167a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 3168a40c4f10SYehuda Sadeh } 3169a40c4f10SYehuda Sadeh 3170a40c4f10SYehuda Sadeh /* 31713d14c5d2SYehuda Sadeh * Register request, send initial attempt. 31723d14c5d2SYehuda Sadeh */ 31733d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 31743d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 31753d14c5d2SYehuda Sadeh bool nofail) 31763d14c5d2SYehuda Sadeh { 31775aea3dcdSIlya Dryomov down_read(&osdc->lock); 31785aea3dcdSIlya Dryomov submit_request(req, false); 31795aea3dcdSIlya Dryomov up_read(&osdc->lock); 31803d14c5d2SYehuda Sadeh 31815aea3dcdSIlya Dryomov return 0; 31823d14c5d2SYehuda Sadeh } 31833d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 31843d14c5d2SYehuda Sadeh 31853d14c5d2SYehuda Sadeh /* 3186c9f9b93dSIlya Dryomov * Unregister a registered request. The request is not completed (i.e. 3187c9f9b93dSIlya Dryomov * no callbacks or wakeups) - higher layers are supposed to know what 3188c9f9b93dSIlya Dryomov * they are canceling. 3189c9f9b93dSIlya Dryomov */ 3190c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 3191c9f9b93dSIlya Dryomov { 3192c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 3193c9f9b93dSIlya Dryomov 31945aea3dcdSIlya Dryomov down_write(&osdc->lock); 31955aea3dcdSIlya Dryomov if (req->r_osd) 31965aea3dcdSIlya Dryomov cancel_request(req); 31975aea3dcdSIlya Dryomov up_write(&osdc->lock); 3198c9f9b93dSIlya Dryomov } 3199c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 3200c9f9b93dSIlya Dryomov 3201c9f9b93dSIlya Dryomov /* 320242b06965SIlya Dryomov * @timeout: in jiffies, 0 means "wait forever" 320342b06965SIlya Dryomov */ 320442b06965SIlya Dryomov static int wait_request_timeout(struct ceph_osd_request *req, 320542b06965SIlya Dryomov unsigned long timeout) 320642b06965SIlya Dryomov { 320742b06965SIlya Dryomov long left; 320842b06965SIlya Dryomov 320942b06965SIlya Dryomov dout("%s req %p tid %llu\n", __func__, req, req->r_tid); 321042b06965SIlya Dryomov left = wait_for_completion_interruptible_timeout(&req->r_completion, 321142b06965SIlya Dryomov ceph_timeout_jiffies(timeout)); 321242b06965SIlya Dryomov if (left <= 0) { 321342b06965SIlya Dryomov left = left ?: -ETIMEDOUT; 321442b06965SIlya Dryomov ceph_osdc_cancel_request(req); 321542b06965SIlya Dryomov 321642b06965SIlya Dryomov /* kludge - need to to wake ceph_osdc_sync() */ 321742b06965SIlya Dryomov complete_all(&req->r_safe_completion); 321842b06965SIlya Dryomov } else { 321942b06965SIlya Dryomov left = req->r_result; /* completed */ 322042b06965SIlya Dryomov } 322142b06965SIlya Dryomov 322242b06965SIlya Dryomov return left; 322342b06965SIlya Dryomov } 322442b06965SIlya Dryomov 322542b06965SIlya Dryomov /* 32263d14c5d2SYehuda Sadeh * wait for a request to complete 32273d14c5d2SYehuda Sadeh */ 32283d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 32293d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 32303d14c5d2SYehuda Sadeh { 323142b06965SIlya Dryomov return wait_request_timeout(req, 0); 32323d14c5d2SYehuda Sadeh } 32333d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 32343d14c5d2SYehuda Sadeh 32353d14c5d2SYehuda Sadeh /* 32363d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 32373d14c5d2SYehuda Sadeh */ 32383d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 32393d14c5d2SYehuda Sadeh { 32405aea3dcdSIlya Dryomov struct rb_node *n, *p; 32415aea3dcdSIlya Dryomov u64 last_tid = atomic64_read(&osdc->last_tid); 32423d14c5d2SYehuda Sadeh 32435aea3dcdSIlya Dryomov again: 32445aea3dcdSIlya Dryomov down_read(&osdc->lock); 32455aea3dcdSIlya Dryomov for (n = rb_first(&osdc->osds); n; n = rb_next(n)) { 32465aea3dcdSIlya Dryomov struct ceph_osd *osd = rb_entry(n, struct ceph_osd, o_node); 32475aea3dcdSIlya Dryomov 32485aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 32495aea3dcdSIlya Dryomov for (p = rb_first(&osd->o_requests); p; p = rb_next(p)) { 32505aea3dcdSIlya Dryomov struct ceph_osd_request *req = 32515aea3dcdSIlya Dryomov rb_entry(p, struct ceph_osd_request, r_node); 32525aea3dcdSIlya Dryomov 32533d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 32543d14c5d2SYehuda Sadeh break; 32553d14c5d2SYehuda Sadeh 32565aea3dcdSIlya Dryomov if (!(req->r_flags & CEPH_OSD_FLAG_WRITE)) 32573d14c5d2SYehuda Sadeh continue; 32583d14c5d2SYehuda Sadeh 32593d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 32605aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 32615aea3dcdSIlya Dryomov up_read(&osdc->lock); 32625aea3dcdSIlya Dryomov dout("%s waiting on req %p tid %llu last_tid %llu\n", 32635aea3dcdSIlya Dryomov __func__, req, req->r_tid, last_tid); 32643d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 32653d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 32665aea3dcdSIlya Dryomov goto again; 32673d14c5d2SYehuda Sadeh } 32685aea3dcdSIlya Dryomov 32695aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 32705aea3dcdSIlya Dryomov } 32715aea3dcdSIlya Dryomov 32725aea3dcdSIlya Dryomov up_read(&osdc->lock); 32735aea3dcdSIlya Dryomov dout("%s done last_tid %llu\n", __func__, last_tid); 32743d14c5d2SYehuda Sadeh } 32753d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 32763d14c5d2SYehuda Sadeh 3277922dab61SIlya Dryomov static struct ceph_osd_request * 3278922dab61SIlya Dryomov alloc_linger_request(struct ceph_osd_linger_request *lreq) 3279922dab61SIlya Dryomov { 3280922dab61SIlya Dryomov struct ceph_osd_request *req; 3281922dab61SIlya Dryomov 3282922dab61SIlya Dryomov req = ceph_osdc_alloc_request(lreq->osdc, NULL, 1, false, GFP_NOIO); 3283922dab61SIlya Dryomov if (!req) 3284922dab61SIlya Dryomov return NULL; 3285922dab61SIlya Dryomov 3286922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 3287922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 3288922dab61SIlya Dryomov 3289922dab61SIlya Dryomov if (ceph_osdc_alloc_messages(req, GFP_NOIO)) { 3290922dab61SIlya Dryomov ceph_osdc_put_request(req); 3291922dab61SIlya Dryomov return NULL; 3292922dab61SIlya Dryomov } 3293922dab61SIlya Dryomov 3294922dab61SIlya Dryomov return req; 3295922dab61SIlya Dryomov } 3296922dab61SIlya Dryomov 3297922dab61SIlya Dryomov /* 3298922dab61SIlya Dryomov * Returns a handle, caller owns a ref. 3299922dab61SIlya Dryomov */ 3300922dab61SIlya Dryomov struct ceph_osd_linger_request * 3301922dab61SIlya Dryomov ceph_osdc_watch(struct ceph_osd_client *osdc, 3302922dab61SIlya Dryomov struct ceph_object_id *oid, 3303922dab61SIlya Dryomov struct ceph_object_locator *oloc, 3304922dab61SIlya Dryomov rados_watchcb2_t wcb, 3305922dab61SIlya Dryomov rados_watcherrcb_t errcb, 3306922dab61SIlya Dryomov void *data) 3307922dab61SIlya Dryomov { 3308922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq; 3309922dab61SIlya Dryomov int ret; 3310922dab61SIlya Dryomov 3311922dab61SIlya Dryomov lreq = linger_alloc(osdc); 3312922dab61SIlya Dryomov if (!lreq) 3313922dab61SIlya Dryomov return ERR_PTR(-ENOMEM); 3314922dab61SIlya Dryomov 331519079203SIlya Dryomov lreq->is_watch = true; 3316922dab61SIlya Dryomov lreq->wcb = wcb; 3317922dab61SIlya Dryomov lreq->errcb = errcb; 3318922dab61SIlya Dryomov lreq->data = data; 3319922dab61SIlya Dryomov 3320922dab61SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 3321922dab61SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 3322922dab61SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK; 3323922dab61SIlya Dryomov lreq->mtime = CURRENT_TIME; 3324922dab61SIlya Dryomov 3325922dab61SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 3326922dab61SIlya Dryomov if (!lreq->reg_req) { 3327922dab61SIlya Dryomov ret = -ENOMEM; 3328922dab61SIlya Dryomov goto err_put_lreq; 3329922dab61SIlya Dryomov } 3330922dab61SIlya Dryomov 3331922dab61SIlya Dryomov lreq->ping_req = alloc_linger_request(lreq); 3332922dab61SIlya Dryomov if (!lreq->ping_req) { 3333922dab61SIlya Dryomov ret = -ENOMEM; 3334922dab61SIlya Dryomov goto err_put_lreq; 3335922dab61SIlya Dryomov } 3336922dab61SIlya Dryomov 3337922dab61SIlya Dryomov down_write(&osdc->lock); 3338922dab61SIlya Dryomov linger_register(lreq); /* before osd_req_op_* */ 3339922dab61SIlya Dryomov osd_req_op_watch_init(lreq->reg_req, 0, lreq->linger_id, 3340922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_WATCH); 3341922dab61SIlya Dryomov osd_req_op_watch_init(lreq->ping_req, 0, lreq->linger_id, 3342922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_PING); 3343922dab61SIlya Dryomov linger_submit(lreq); 3344922dab61SIlya Dryomov up_write(&osdc->lock); 3345922dab61SIlya Dryomov 3346922dab61SIlya Dryomov ret = linger_reg_commit_wait(lreq); 3347922dab61SIlya Dryomov if (ret) { 3348922dab61SIlya Dryomov linger_cancel(lreq); 3349922dab61SIlya Dryomov goto err_put_lreq; 3350922dab61SIlya Dryomov } 3351922dab61SIlya Dryomov 3352922dab61SIlya Dryomov return lreq; 3353922dab61SIlya Dryomov 3354922dab61SIlya Dryomov err_put_lreq: 3355922dab61SIlya Dryomov linger_put(lreq); 3356922dab61SIlya Dryomov return ERR_PTR(ret); 3357922dab61SIlya Dryomov } 3358922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_watch); 3359922dab61SIlya Dryomov 3360922dab61SIlya Dryomov /* 3361922dab61SIlya Dryomov * Releases a ref. 3362922dab61SIlya Dryomov * 3363922dab61SIlya Dryomov * Times out after mount_timeout to preserve rbd unmap behaviour 3364922dab61SIlya Dryomov * introduced in 2894e1d76974 ("rbd: timeout watch teardown on unmap 3365922dab61SIlya Dryomov * with mount_timeout"). 3366922dab61SIlya Dryomov */ 3367922dab61SIlya Dryomov int ceph_osdc_unwatch(struct ceph_osd_client *osdc, 3368922dab61SIlya Dryomov struct ceph_osd_linger_request *lreq) 3369922dab61SIlya Dryomov { 3370922dab61SIlya Dryomov struct ceph_options *opts = osdc->client->options; 3371922dab61SIlya Dryomov struct ceph_osd_request *req; 3372922dab61SIlya Dryomov int ret; 3373922dab61SIlya Dryomov 3374922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 3375922dab61SIlya Dryomov if (!req) 3376922dab61SIlya Dryomov return -ENOMEM; 3377922dab61SIlya Dryomov 3378922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, &lreq->t.base_oid); 3379922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, &lreq->t.base_oloc); 3380922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK; 3381922dab61SIlya Dryomov req->r_mtime = CURRENT_TIME; 3382922dab61SIlya Dryomov osd_req_op_watch_init(req, 0, lreq->linger_id, 3383922dab61SIlya Dryomov CEPH_OSD_WATCH_OP_UNWATCH); 3384922dab61SIlya Dryomov 3385922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 3386922dab61SIlya Dryomov if (ret) 3387922dab61SIlya Dryomov goto out_put_req; 3388922dab61SIlya Dryomov 3389922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 3390922dab61SIlya Dryomov linger_cancel(lreq); 3391922dab61SIlya Dryomov linger_put(lreq); 3392922dab61SIlya Dryomov ret = wait_request_timeout(req, opts->mount_timeout); 3393922dab61SIlya Dryomov 3394922dab61SIlya Dryomov out_put_req: 3395922dab61SIlya Dryomov ceph_osdc_put_request(req); 3396922dab61SIlya Dryomov return ret; 3397922dab61SIlya Dryomov } 3398922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_unwatch); 3399922dab61SIlya Dryomov 3400922dab61SIlya Dryomov static int osd_req_op_notify_ack_init(struct ceph_osd_request *req, int which, 3401922dab61SIlya Dryomov u64 notify_id, u64 cookie, void *payload, 3402922dab61SIlya Dryomov size_t payload_len) 3403922dab61SIlya Dryomov { 3404922dab61SIlya Dryomov struct ceph_osd_req_op *op; 3405922dab61SIlya Dryomov struct ceph_pagelist *pl; 3406922dab61SIlya Dryomov int ret; 3407922dab61SIlya Dryomov 3408922dab61SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY_ACK, 0); 3409922dab61SIlya Dryomov 3410922dab61SIlya Dryomov pl = kmalloc(sizeof(*pl), GFP_NOIO); 3411922dab61SIlya Dryomov if (!pl) 3412922dab61SIlya Dryomov return -ENOMEM; 3413922dab61SIlya Dryomov 3414922dab61SIlya Dryomov ceph_pagelist_init(pl); 3415922dab61SIlya Dryomov ret = ceph_pagelist_encode_64(pl, notify_id); 3416922dab61SIlya Dryomov ret |= ceph_pagelist_encode_64(pl, cookie); 3417922dab61SIlya Dryomov if (payload) { 3418922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 3419922dab61SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 3420922dab61SIlya Dryomov } else { 3421922dab61SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, 0); 3422922dab61SIlya Dryomov } 3423922dab61SIlya Dryomov if (ret) { 3424922dab61SIlya Dryomov ceph_pagelist_release(pl); 3425922dab61SIlya Dryomov return -ENOMEM; 3426922dab61SIlya Dryomov } 3427922dab61SIlya Dryomov 3428922dab61SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify_ack.request_data, pl); 3429922dab61SIlya Dryomov op->indata_len = pl->length; 3430922dab61SIlya Dryomov return 0; 3431922dab61SIlya Dryomov } 3432922dab61SIlya Dryomov 3433922dab61SIlya Dryomov int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, 3434922dab61SIlya Dryomov struct ceph_object_id *oid, 3435922dab61SIlya Dryomov struct ceph_object_locator *oloc, 3436922dab61SIlya Dryomov u64 notify_id, 3437922dab61SIlya Dryomov u64 cookie, 3438922dab61SIlya Dryomov void *payload, 3439922dab61SIlya Dryomov size_t payload_len) 3440922dab61SIlya Dryomov { 3441922dab61SIlya Dryomov struct ceph_osd_request *req; 3442922dab61SIlya Dryomov int ret; 3443922dab61SIlya Dryomov 3444922dab61SIlya Dryomov req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_NOIO); 3445922dab61SIlya Dryomov if (!req) 3446922dab61SIlya Dryomov return -ENOMEM; 3447922dab61SIlya Dryomov 3448922dab61SIlya Dryomov ceph_oid_copy(&req->r_base_oid, oid); 3449922dab61SIlya Dryomov ceph_oloc_copy(&req->r_base_oloc, oloc); 3450922dab61SIlya Dryomov req->r_flags = CEPH_OSD_FLAG_READ; 3451922dab61SIlya Dryomov 3452922dab61SIlya Dryomov ret = ceph_osdc_alloc_messages(req, GFP_NOIO); 3453922dab61SIlya Dryomov if (ret) 3454922dab61SIlya Dryomov goto out_put_req; 3455922dab61SIlya Dryomov 3456922dab61SIlya Dryomov ret = osd_req_op_notify_ack_init(req, 0, notify_id, cookie, payload, 3457922dab61SIlya Dryomov payload_len); 3458922dab61SIlya Dryomov if (ret) 3459922dab61SIlya Dryomov goto out_put_req; 3460922dab61SIlya Dryomov 3461922dab61SIlya Dryomov ceph_osdc_start_request(osdc, req, false); 3462922dab61SIlya Dryomov ret = ceph_osdc_wait_request(osdc, req); 3463922dab61SIlya Dryomov 3464922dab61SIlya Dryomov out_put_req: 3465922dab61SIlya Dryomov ceph_osdc_put_request(req); 3466922dab61SIlya Dryomov return ret; 3467922dab61SIlya Dryomov } 3468922dab61SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify_ack); 3469922dab61SIlya Dryomov 347019079203SIlya Dryomov static int osd_req_op_notify_init(struct ceph_osd_request *req, int which, 347119079203SIlya Dryomov u64 cookie, u32 prot_ver, u32 timeout, 347219079203SIlya Dryomov void *payload, size_t payload_len) 347319079203SIlya Dryomov { 347419079203SIlya Dryomov struct ceph_osd_req_op *op; 347519079203SIlya Dryomov struct ceph_pagelist *pl; 347619079203SIlya Dryomov int ret; 347719079203SIlya Dryomov 347819079203SIlya Dryomov op = _osd_req_op_init(req, which, CEPH_OSD_OP_NOTIFY, 0); 347919079203SIlya Dryomov op->notify.cookie = cookie; 348019079203SIlya Dryomov 348119079203SIlya Dryomov pl = kmalloc(sizeof(*pl), GFP_NOIO); 348219079203SIlya Dryomov if (!pl) 348319079203SIlya Dryomov return -ENOMEM; 348419079203SIlya Dryomov 348519079203SIlya Dryomov ceph_pagelist_init(pl); 348619079203SIlya Dryomov ret = ceph_pagelist_encode_32(pl, 1); /* prot_ver */ 348719079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, timeout); 348819079203SIlya Dryomov ret |= ceph_pagelist_encode_32(pl, payload_len); 348919079203SIlya Dryomov ret |= ceph_pagelist_append(pl, payload, payload_len); 349019079203SIlya Dryomov if (ret) { 349119079203SIlya Dryomov ceph_pagelist_release(pl); 349219079203SIlya Dryomov return -ENOMEM; 349319079203SIlya Dryomov } 349419079203SIlya Dryomov 349519079203SIlya Dryomov ceph_osd_data_pagelist_init(&op->notify.request_data, pl); 349619079203SIlya Dryomov op->indata_len = pl->length; 349719079203SIlya Dryomov return 0; 349819079203SIlya Dryomov } 349919079203SIlya Dryomov 350019079203SIlya Dryomov /* 350119079203SIlya Dryomov * @timeout: in seconds 350219079203SIlya Dryomov * 350319079203SIlya Dryomov * @preply_{pages,len} are initialized both on success and error. 350419079203SIlya Dryomov * The caller is responsible for: 350519079203SIlya Dryomov * 350619079203SIlya Dryomov * ceph_release_page_vector(reply_pages, calc_pages_for(0, reply_len)) 350719079203SIlya Dryomov */ 350819079203SIlya Dryomov int ceph_osdc_notify(struct ceph_osd_client *osdc, 350919079203SIlya Dryomov struct ceph_object_id *oid, 351019079203SIlya Dryomov struct ceph_object_locator *oloc, 351119079203SIlya Dryomov void *payload, 351219079203SIlya Dryomov size_t payload_len, 351319079203SIlya Dryomov u32 timeout, 351419079203SIlya Dryomov struct page ***preply_pages, 351519079203SIlya Dryomov size_t *preply_len) 351619079203SIlya Dryomov { 351719079203SIlya Dryomov struct ceph_osd_linger_request *lreq; 351819079203SIlya Dryomov struct page **pages; 351919079203SIlya Dryomov int ret; 352019079203SIlya Dryomov 352119079203SIlya Dryomov WARN_ON(!timeout); 352219079203SIlya Dryomov if (preply_pages) { 352319079203SIlya Dryomov *preply_pages = NULL; 352419079203SIlya Dryomov *preply_len = 0; 352519079203SIlya Dryomov } 352619079203SIlya Dryomov 352719079203SIlya Dryomov lreq = linger_alloc(osdc); 352819079203SIlya Dryomov if (!lreq) 352919079203SIlya Dryomov return -ENOMEM; 353019079203SIlya Dryomov 353119079203SIlya Dryomov lreq->preply_pages = preply_pages; 353219079203SIlya Dryomov lreq->preply_len = preply_len; 353319079203SIlya Dryomov 353419079203SIlya Dryomov ceph_oid_copy(&lreq->t.base_oid, oid); 353519079203SIlya Dryomov ceph_oloc_copy(&lreq->t.base_oloc, oloc); 353619079203SIlya Dryomov lreq->t.flags = CEPH_OSD_FLAG_READ; 353719079203SIlya Dryomov 353819079203SIlya Dryomov lreq->reg_req = alloc_linger_request(lreq); 353919079203SIlya Dryomov if (!lreq->reg_req) { 354019079203SIlya Dryomov ret = -ENOMEM; 354119079203SIlya Dryomov goto out_put_lreq; 354219079203SIlya Dryomov } 354319079203SIlya Dryomov 354419079203SIlya Dryomov /* for notify_id */ 354519079203SIlya Dryomov pages = ceph_alloc_page_vector(1, GFP_NOIO); 354619079203SIlya Dryomov if (IS_ERR(pages)) { 354719079203SIlya Dryomov ret = PTR_ERR(pages); 354819079203SIlya Dryomov goto out_put_lreq; 354919079203SIlya Dryomov } 355019079203SIlya Dryomov 355119079203SIlya Dryomov down_write(&osdc->lock); 355219079203SIlya Dryomov linger_register(lreq); /* before osd_req_op_* */ 355319079203SIlya Dryomov ret = osd_req_op_notify_init(lreq->reg_req, 0, lreq->linger_id, 1, 355419079203SIlya Dryomov timeout, payload, payload_len); 355519079203SIlya Dryomov if (ret) { 355619079203SIlya Dryomov linger_unregister(lreq); 355719079203SIlya Dryomov up_write(&osdc->lock); 355819079203SIlya Dryomov ceph_release_page_vector(pages, 1); 355919079203SIlya Dryomov goto out_put_lreq; 356019079203SIlya Dryomov } 356119079203SIlya Dryomov ceph_osd_data_pages_init(osd_req_op_data(lreq->reg_req, 0, notify, 356219079203SIlya Dryomov response_data), 356319079203SIlya Dryomov pages, PAGE_SIZE, 0, false, true); 356419079203SIlya Dryomov linger_submit(lreq); 356519079203SIlya Dryomov up_write(&osdc->lock); 356619079203SIlya Dryomov 356719079203SIlya Dryomov ret = linger_reg_commit_wait(lreq); 356819079203SIlya Dryomov if (!ret) 356919079203SIlya Dryomov ret = linger_notify_finish_wait(lreq); 357019079203SIlya Dryomov else 357119079203SIlya Dryomov dout("lreq %p failed to initiate notify %d\n", lreq, ret); 357219079203SIlya Dryomov 357319079203SIlya Dryomov linger_cancel(lreq); 357419079203SIlya Dryomov out_put_lreq: 357519079203SIlya Dryomov linger_put(lreq); 357619079203SIlya Dryomov return ret; 357719079203SIlya Dryomov } 357819079203SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_notify); 357919079203SIlya Dryomov 35803d14c5d2SYehuda Sadeh /* 3581dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 3582dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 3583dd935f44SJosh Durgin */ 3584f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 3585dd935f44SJosh Durgin { 3586dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 3587dd935f44SJosh Durgin } 3588dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 3589dd935f44SJosh Durgin 3590dd935f44SJosh Durgin 3591dd935f44SJosh Durgin /* 35923d14c5d2SYehuda Sadeh * init, shutdown 35933d14c5d2SYehuda Sadeh */ 35943d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 35953d14c5d2SYehuda Sadeh { 35963d14c5d2SYehuda Sadeh int err; 35973d14c5d2SYehuda Sadeh 35983d14c5d2SYehuda Sadeh dout("init\n"); 35993d14c5d2SYehuda Sadeh osdc->client = client; 36005aea3dcdSIlya Dryomov init_rwsem(&osdc->lock); 36013d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 36023d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 36039dd2845cSIlya Dryomov spin_lock_init(&osdc->osd_lru_lock); 36045aea3dcdSIlya Dryomov osd_init(&osdc->homeless_osd); 36055aea3dcdSIlya Dryomov osdc->homeless_osd.o_osdc = osdc; 36065aea3dcdSIlya Dryomov osdc->homeless_osd.o_osd = CEPH_HOMELESS_OSD; 3607922dab61SIlya Dryomov osdc->linger_requests = RB_ROOT; 36083d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 36093d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 36103d14c5d2SYehuda Sadeh 36113d14c5d2SYehuda Sadeh err = -ENOMEM; 3612e5253a7bSIlya Dryomov osdc->osdmap = ceph_osdmap_alloc(); 3613e5253a7bSIlya Dryomov if (!osdc->osdmap) 3614e5253a7bSIlya Dryomov goto out; 3615e5253a7bSIlya Dryomov 36169e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 36179e767adbSIlya Dryomov ceph_osd_request_cache); 36183d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 3619e5253a7bSIlya Dryomov goto out_map; 36203d14c5d2SYehuda Sadeh 3621d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 3622711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op"); 36233d14c5d2SYehuda Sadeh if (err < 0) 36243d14c5d2SYehuda Sadeh goto out_mempool; 3625d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 3626711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op_reply"); 36273d14c5d2SYehuda Sadeh if (err < 0) 36283d14c5d2SYehuda Sadeh goto out_msgpool; 3629a40c4f10SYehuda Sadeh 3630dbcae088SDan Carpenter err = -ENOMEM; 3631a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 3632dbcae088SDan Carpenter if (!osdc->notify_wq) 3633c172ec5cSIlya Dryomov goto out_msgpool_reply; 3634c172ec5cSIlya Dryomov 3635fbca9635SIlya Dryomov schedule_delayed_work(&osdc->timeout_work, 3636fbca9635SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 3637b37ee1b9SIlya Dryomov schedule_delayed_work(&osdc->osds_timeout_work, 3638b37ee1b9SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 3639b37ee1b9SIlya Dryomov 36403d14c5d2SYehuda Sadeh return 0; 36413d14c5d2SYehuda Sadeh 3642c172ec5cSIlya Dryomov out_msgpool_reply: 3643c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 36443d14c5d2SYehuda Sadeh out_msgpool: 36453d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 36463d14c5d2SYehuda Sadeh out_mempool: 36473d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 3648e5253a7bSIlya Dryomov out_map: 3649e5253a7bSIlya Dryomov ceph_osdmap_destroy(osdc->osdmap); 36503d14c5d2SYehuda Sadeh out: 36513d14c5d2SYehuda Sadeh return err; 36523d14c5d2SYehuda Sadeh } 36533d14c5d2SYehuda Sadeh 36543d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 36553d14c5d2SYehuda Sadeh { 3656a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 3657a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 36583d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 36593d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 366042a2c09fSIlya Dryomov 36615aea3dcdSIlya Dryomov down_write(&osdc->lock); 366242a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 366342a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 366442a2c09fSIlya Dryomov struct ceph_osd, o_node); 36655aea3dcdSIlya Dryomov close_osd(osd); 366642a2c09fSIlya Dryomov } 36675aea3dcdSIlya Dryomov up_write(&osdc->lock); 36685aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->homeless_osd.o_ref) != 1); 36695aea3dcdSIlya Dryomov osd_cleanup(&osdc->homeless_osd); 36705aea3dcdSIlya Dryomov 36715aea3dcdSIlya Dryomov WARN_ON(!list_empty(&osdc->osd_lru)); 3672922dab61SIlya Dryomov WARN_ON(!RB_EMPTY_ROOT(&osdc->linger_requests)); 36735aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_requests)); 36745aea3dcdSIlya Dryomov WARN_ON(atomic_read(&osdc->num_homeless)); 367542a2c09fSIlya Dryomov 36763d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 36773d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 36783d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 36793d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 36803d14c5d2SYehuda Sadeh } 36813d14c5d2SYehuda Sadeh 36823d14c5d2SYehuda Sadeh /* 36833d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 36843d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 36853d14c5d2SYehuda Sadeh */ 36863d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 36873d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 36883d14c5d2SYehuda Sadeh u64 off, u64 *plen, 36893d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 3690b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 36913d14c5d2SYehuda Sadeh { 36923d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 36933d14c5d2SYehuda Sadeh int rc = 0; 36943d14c5d2SYehuda Sadeh 36953d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 36963d14c5d2SYehuda Sadeh vino.snap, off, *plen); 3697715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 36983d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 3699acead002SAlex Elder NULL, truncate_seq, truncate_size, 3700153e5167SAlex Elder false); 37016816282dSSage Weil if (IS_ERR(req)) 37026816282dSSage Weil return PTR_ERR(req); 37033d14c5d2SYehuda Sadeh 37043d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 3705406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 3706a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 37073d14c5d2SYehuda Sadeh 3708e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 370943bfe5deSAlex Elder off, *plen, *plen, page_align); 37103d14c5d2SYehuda Sadeh 37113d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 37123d14c5d2SYehuda Sadeh if (!rc) 37133d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 37143d14c5d2SYehuda Sadeh 37153d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 37163d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 37173d14c5d2SYehuda Sadeh return rc; 37183d14c5d2SYehuda Sadeh } 37193d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 37203d14c5d2SYehuda Sadeh 37213d14c5d2SYehuda Sadeh /* 37223d14c5d2SYehuda Sadeh * do a synchronous write on N pages 37233d14c5d2SYehuda Sadeh */ 37243d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 37253d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 37263d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 37273d14c5d2SYehuda Sadeh u64 off, u64 len, 37283d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 37293d14c5d2SYehuda Sadeh struct timespec *mtime, 373024808826SAlex Elder struct page **pages, int num_pages) 37313d14c5d2SYehuda Sadeh { 37323d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 37333d14c5d2SYehuda Sadeh int rc = 0; 3734b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 37353d14c5d2SYehuda Sadeh 3736715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 37373d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 373824808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 3739acead002SAlex Elder snapc, truncate_seq, truncate_size, 3740153e5167SAlex Elder true); 37416816282dSSage Weil if (IS_ERR(req)) 37426816282dSSage Weil return PTR_ERR(req); 37433d14c5d2SYehuda Sadeh 37443d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 3745406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 374643bfe5deSAlex Elder false, false); 374743bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 37483d14c5d2SYehuda Sadeh 3749bb873b53SIlya Dryomov req->r_mtime = *mtime; 375087f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 37513d14c5d2SYehuda Sadeh if (!rc) 37523d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 37533d14c5d2SYehuda Sadeh 37543d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 37553d14c5d2SYehuda Sadeh if (rc == 0) 37563d14c5d2SYehuda Sadeh rc = len; 37573d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 37583d14c5d2SYehuda Sadeh return rc; 37593d14c5d2SYehuda Sadeh } 37603d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 37613d14c5d2SYehuda Sadeh 37625522ae0bSAlex Elder int ceph_osdc_setup(void) 37635522ae0bSAlex Elder { 37643f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 37653f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 37663f1af42aSIlya Dryomov 37675522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 37683f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 37693f1af42aSIlya Dryomov 0, 0, NULL); 37705522ae0bSAlex Elder 37715522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 37725522ae0bSAlex Elder } 37735522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 37745522ae0bSAlex Elder 37755522ae0bSAlex Elder void ceph_osdc_cleanup(void) 37765522ae0bSAlex Elder { 37775522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 37785522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 37795522ae0bSAlex Elder ceph_osd_request_cache = NULL; 37805522ae0bSAlex Elder } 37815522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 37825522ae0bSAlex Elder 37833d14c5d2SYehuda Sadeh /* 37843d14c5d2SYehuda Sadeh * handle incoming message 37853d14c5d2SYehuda Sadeh */ 37863d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 37873d14c5d2SYehuda Sadeh { 37883d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 37895aea3dcdSIlya Dryomov struct ceph_osd_client *osdc = osd->o_osdc; 37903d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 37913d14c5d2SYehuda Sadeh 37923d14c5d2SYehuda Sadeh switch (type) { 37933d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 37943d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 37953d14c5d2SYehuda Sadeh break; 37963d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 37975aea3dcdSIlya Dryomov handle_reply(osd, msg); 37983d14c5d2SYehuda Sadeh break; 3799a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 3800a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 3801a40c4f10SYehuda Sadeh break; 38023d14c5d2SYehuda Sadeh 38033d14c5d2SYehuda Sadeh default: 38043d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 38053d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 38063d14c5d2SYehuda Sadeh } 38075aea3dcdSIlya Dryomov 38083d14c5d2SYehuda Sadeh ceph_msg_put(msg); 38093d14c5d2SYehuda Sadeh } 38103d14c5d2SYehuda Sadeh 38113d14c5d2SYehuda Sadeh /* 3812d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 3813d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 3814d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 38153d14c5d2SYehuda Sadeh */ 38163d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 38173d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 38183d14c5d2SYehuda Sadeh int *skip) 38193d14c5d2SYehuda Sadeh { 38203d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 38213d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 38225aea3dcdSIlya Dryomov struct ceph_msg *m = NULL; 38233d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 38243f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 38253d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 38265aea3dcdSIlya Dryomov u64 tid = le64_to_cpu(hdr->tid); 38273d14c5d2SYehuda Sadeh 38285aea3dcdSIlya Dryomov down_read(&osdc->lock); 38295aea3dcdSIlya Dryomov if (!osd_registered(osd)) { 38305aea3dcdSIlya Dryomov dout("%s osd%d unknown, skipping\n", __func__, osd->o_osd); 38315aea3dcdSIlya Dryomov *skip = 1; 38325aea3dcdSIlya Dryomov goto out_unlock_osdc; 38335aea3dcdSIlya Dryomov } 38345aea3dcdSIlya Dryomov WARN_ON(osd->o_osd != le64_to_cpu(hdr->src.num)); 38355aea3dcdSIlya Dryomov 38365aea3dcdSIlya Dryomov mutex_lock(&osd->lock); 38375aea3dcdSIlya Dryomov req = lookup_request(&osd->o_requests, tid); 38383d14c5d2SYehuda Sadeh if (!req) { 3839cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 3840cd8140c6SIlya Dryomov osd->o_osd, tid); 3841d15f9d69SIlya Dryomov *skip = 1; 38425aea3dcdSIlya Dryomov goto out_unlock_session; 38433d14c5d2SYehuda Sadeh } 38443d14c5d2SYehuda Sadeh 38458921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 38463d14c5d2SYehuda Sadeh 3847f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 3848d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 3849d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 3850d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 38513f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 38523f0a4ac5SIlya Dryomov false); 38533d14c5d2SYehuda Sadeh if (!m) 38545aea3dcdSIlya Dryomov goto out_unlock_session; 38553d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 38563d14c5d2SYehuda Sadeh req->r_reply = m; 38573d14c5d2SYehuda Sadeh } 38583d14c5d2SYehuda Sadeh 3859d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 3860d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 3861d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 3862d15f9d69SIlya Dryomov req->r_reply->data_length); 38633d14c5d2SYehuda Sadeh m = NULL; 3864d15f9d69SIlya Dryomov *skip = 1; 38655aea3dcdSIlya Dryomov goto out_unlock_session; 38663d14c5d2SYehuda Sadeh } 3867d15f9d69SIlya Dryomov 3868d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 38693d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 38703d14c5d2SYehuda Sadeh 38715aea3dcdSIlya Dryomov out_unlock_session: 38725aea3dcdSIlya Dryomov mutex_unlock(&osd->lock); 38735aea3dcdSIlya Dryomov out_unlock_osdc: 38745aea3dcdSIlya Dryomov up_read(&osdc->lock); 38753d14c5d2SYehuda Sadeh return m; 38763d14c5d2SYehuda Sadeh } 38773d14c5d2SYehuda Sadeh 387819079203SIlya Dryomov /* 387919079203SIlya Dryomov * TODO: switch to a msg-owned pagelist 388019079203SIlya Dryomov */ 388119079203SIlya Dryomov static struct ceph_msg *alloc_msg_with_page_vector(struct ceph_msg_header *hdr) 388219079203SIlya Dryomov { 388319079203SIlya Dryomov struct ceph_msg *m; 388419079203SIlya Dryomov int type = le16_to_cpu(hdr->type); 388519079203SIlya Dryomov u32 front_len = le32_to_cpu(hdr->front_len); 388619079203SIlya Dryomov u32 data_len = le32_to_cpu(hdr->data_len); 388719079203SIlya Dryomov 388819079203SIlya Dryomov m = ceph_msg_new(type, front_len, GFP_NOIO, false); 388919079203SIlya Dryomov if (!m) 389019079203SIlya Dryomov return NULL; 389119079203SIlya Dryomov 389219079203SIlya Dryomov if (data_len) { 389319079203SIlya Dryomov struct page **pages; 389419079203SIlya Dryomov struct ceph_osd_data osd_data; 389519079203SIlya Dryomov 389619079203SIlya Dryomov pages = ceph_alloc_page_vector(calc_pages_for(0, data_len), 389719079203SIlya Dryomov GFP_NOIO); 389819079203SIlya Dryomov if (!pages) { 389919079203SIlya Dryomov ceph_msg_put(m); 390019079203SIlya Dryomov return NULL; 390119079203SIlya Dryomov } 390219079203SIlya Dryomov 390319079203SIlya Dryomov ceph_osd_data_pages_init(&osd_data, pages, data_len, 0, false, 390419079203SIlya Dryomov false); 390519079203SIlya Dryomov ceph_osdc_msg_data_add(m, &osd_data); 390619079203SIlya Dryomov } 390719079203SIlya Dryomov 390819079203SIlya Dryomov return m; 390919079203SIlya Dryomov } 391019079203SIlya Dryomov 39113d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 39123d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 39133d14c5d2SYehuda Sadeh int *skip) 39143d14c5d2SYehuda Sadeh { 39153d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 39163d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 39173d14c5d2SYehuda Sadeh 39181c20f2d2SAlex Elder *skip = 0; 39193d14c5d2SYehuda Sadeh switch (type) { 39203d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 3921a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 392219079203SIlya Dryomov return alloc_msg_with_page_vector(hdr); 39233d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 39243d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 39253d14c5d2SYehuda Sadeh default: 39265aea3dcdSIlya Dryomov pr_warn("%s osd%d unknown msg type %d, skipping\n", __func__, 39275aea3dcdSIlya Dryomov osd->o_osd, type); 39283d14c5d2SYehuda Sadeh *skip = 1; 39293d14c5d2SYehuda Sadeh return NULL; 39303d14c5d2SYehuda Sadeh } 39313d14c5d2SYehuda Sadeh } 39323d14c5d2SYehuda Sadeh 39333d14c5d2SYehuda Sadeh /* 39343d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 39353d14c5d2SYehuda Sadeh */ 39363d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 39373d14c5d2SYehuda Sadeh { 39383d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 39393d14c5d2SYehuda Sadeh if (get_osd(osd)) 39403d14c5d2SYehuda Sadeh return con; 39413d14c5d2SYehuda Sadeh return NULL; 39423d14c5d2SYehuda Sadeh } 39433d14c5d2SYehuda Sadeh 39443d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 39453d14c5d2SYehuda Sadeh { 39463d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 39473d14c5d2SYehuda Sadeh put_osd(osd); 39483d14c5d2SYehuda Sadeh } 39493d14c5d2SYehuda Sadeh 39503d14c5d2SYehuda Sadeh /* 39513d14c5d2SYehuda Sadeh * authentication 39523d14c5d2SYehuda Sadeh */ 3953a3530df3SAlex Elder /* 3954a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 3955a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 3956a3530df3SAlex Elder */ 3957a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 39588f43fb53SAlex Elder int *proto, int force_new) 39593d14c5d2SYehuda Sadeh { 39603d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 39613d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 39623d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 396374f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 39643d14c5d2SYehuda Sadeh 396574f1869fSAlex Elder if (force_new && auth->authorizer) { 39666c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 396774f1869fSAlex Elder auth->authorizer = NULL; 39683d14c5d2SYehuda Sadeh } 396927859f97SSage Weil if (!auth->authorizer) { 397027859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 3971a3530df3SAlex Elder auth); 39723d14c5d2SYehuda Sadeh if (ret) 3973a3530df3SAlex Elder return ERR_PTR(ret); 397427859f97SSage Weil } else { 397527859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 39760bed9b5cSSage Weil auth); 39770bed9b5cSSage Weil if (ret) 39780bed9b5cSSage Weil return ERR_PTR(ret); 39793d14c5d2SYehuda Sadeh } 39803d14c5d2SYehuda Sadeh *proto = ac->protocol; 398174f1869fSAlex Elder 3982a3530df3SAlex Elder return auth; 39833d14c5d2SYehuda Sadeh } 39843d14c5d2SYehuda Sadeh 39853d14c5d2SYehuda Sadeh 39863d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 39873d14c5d2SYehuda Sadeh { 39883d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 39893d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 39903d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 39913d14c5d2SYehuda Sadeh 399227859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 39933d14c5d2SYehuda Sadeh } 39943d14c5d2SYehuda Sadeh 39953d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 39963d14c5d2SYehuda Sadeh { 39973d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 39983d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 39993d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 40003d14c5d2SYehuda Sadeh 400127859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 40023d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 40033d14c5d2SYehuda Sadeh } 40043d14c5d2SYehuda Sadeh 400579dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 400633d07337SYan, Zheng { 400779dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 400833d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 400979dbd1baSIlya Dryomov 401033d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 401133d07337SYan, Zheng } 401233d07337SYan, Zheng 401379dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 401433d07337SYan, Zheng { 401579dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 401633d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 401779dbd1baSIlya Dryomov 401833d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 401933d07337SYan, Zheng } 402033d07337SYan, Zheng 40213d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 40223d14c5d2SYehuda Sadeh .get = get_osd_con, 40233d14c5d2SYehuda Sadeh .put = put_osd_con, 40243d14c5d2SYehuda Sadeh .dispatch = dispatch, 40253d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 40263d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 40273d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 40283d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 402979dbd1baSIlya Dryomov .sign_message = osd_sign_message, 403079dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 40315aea3dcdSIlya Dryomov .fault = osd_fault, 40323d14c5d2SYehuda Sadeh }; 4033