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 28f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc); 296f6c7006SSage Weil static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd); 30a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 31a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 322cc6128aSIlya Dryomov static void __unregister_request(struct ceph_osd_client *osdc, 332cc6128aSIlya Dryomov struct ceph_osd_request *req); 34a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 35a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 362cc6128aSIlya Dryomov static void __enqueue_request(struct ceph_osd_request *req); 3756e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 38a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 393d14c5d2SYehuda Sadeh 403d14c5d2SYehuda Sadeh /* 413d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 423d14c5d2SYehuda Sadeh * 433d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 443d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 453d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 463d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 473d14c5d2SYehuda Sadeh * access to storage. 483d14c5d2SYehuda Sadeh * 493d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 503d14c5d2SYehuda Sadeh * are described by the osd map. 513d14c5d2SYehuda Sadeh * 523d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 533d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 543d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 553d14c5d2SYehuda Sadeh * channel with an OSD is reset. 563d14c5d2SYehuda Sadeh */ 573d14c5d2SYehuda Sadeh 583d14c5d2SYehuda Sadeh /* 593d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 603d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 613d14c5d2SYehuda Sadeh * object boundary. 623d14c5d2SYehuda Sadeh * 633d14c5d2SYehuda Sadeh * fill osd op in request message. 643d14c5d2SYehuda Sadeh */ 65dbe0fc41SAlex Elder static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 66a19dadfbSAlex Elder u64 *objnum, u64 *objoff, u64 *objlen) 673d14c5d2SYehuda Sadeh { 6860e56f13SAlex Elder u64 orig_len = *plen; 69d63b77f4SSage Weil int r; 703d14c5d2SYehuda Sadeh 7160e56f13SAlex Elder /* object extent? */ 7275d1c941SAlex Elder r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, 7375d1c941SAlex Elder objoff, objlen); 74d63b77f4SSage Weil if (r < 0) 75d63b77f4SSage Weil return r; 7675d1c941SAlex Elder if (*objlen < orig_len) { 7775d1c941SAlex Elder *plen = *objlen; 7860e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 7960e56f13SAlex Elder orig_len - *plen, off, *plen); 8060e56f13SAlex Elder } 8160e56f13SAlex Elder 8275d1c941SAlex Elder dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); 833d14c5d2SYehuda Sadeh 843ff5f385SAlex Elder return 0; 853d14c5d2SYehuda Sadeh } 863d14c5d2SYehuda Sadeh 87c54d47bfSAlex Elder static void ceph_osd_data_init(struct ceph_osd_data *osd_data) 88c54d47bfSAlex Elder { 89c54d47bfSAlex Elder memset(osd_data, 0, sizeof (*osd_data)); 90c54d47bfSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_NONE; 91c54d47bfSAlex Elder } 92c54d47bfSAlex Elder 93a4ce40a9SAlex Elder static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, 9443bfe5deSAlex Elder struct page **pages, u64 length, u32 alignment, 9543bfe5deSAlex Elder bool pages_from_pool, bool own_pages) 9643bfe5deSAlex Elder { 9743bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 9843bfe5deSAlex Elder osd_data->pages = pages; 9943bfe5deSAlex Elder osd_data->length = length; 10043bfe5deSAlex Elder osd_data->alignment = alignment; 10143bfe5deSAlex Elder osd_data->pages_from_pool = pages_from_pool; 10243bfe5deSAlex Elder osd_data->own_pages = own_pages; 10343bfe5deSAlex Elder } 10443bfe5deSAlex Elder 105a4ce40a9SAlex Elder static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, 10643bfe5deSAlex Elder struct ceph_pagelist *pagelist) 10743bfe5deSAlex Elder { 10843bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; 10943bfe5deSAlex Elder osd_data->pagelist = pagelist; 11043bfe5deSAlex Elder } 11143bfe5deSAlex Elder 11243bfe5deSAlex Elder #ifdef CONFIG_BLOCK 113a4ce40a9SAlex Elder static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, 11443bfe5deSAlex Elder struct bio *bio, size_t bio_length) 11543bfe5deSAlex Elder { 11643bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_BIO; 11743bfe5deSAlex Elder osd_data->bio = bio; 11843bfe5deSAlex Elder osd_data->bio_length = bio_length; 11943bfe5deSAlex Elder } 12043bfe5deSAlex Elder #endif /* CONFIG_BLOCK */ 12143bfe5deSAlex Elder 122863c7eb5SAlex Elder #define osd_req_op_data(oreq, whch, typ, fld) \ 123863c7eb5SAlex Elder ({ \ 1248a703a38SIoana Ciornei struct ceph_osd_request *__oreq = (oreq); \ 1258a703a38SIoana Ciornei unsigned int __whch = (whch); \ 1268a703a38SIoana Ciornei BUG_ON(__whch >= __oreq->r_num_ops); \ 1278a703a38SIoana Ciornei &__oreq->r_ops[__whch].typ.fld; \ 128863c7eb5SAlex Elder }) 129863c7eb5SAlex Elder 13049719778SAlex Elder static struct ceph_osd_data * 13149719778SAlex Elder osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) 13249719778SAlex Elder { 13349719778SAlex Elder BUG_ON(which >= osd_req->r_num_ops); 13449719778SAlex Elder 13549719778SAlex Elder return &osd_req->r_ops[which].raw_data_in; 13649719778SAlex Elder } 13749719778SAlex Elder 138a4ce40a9SAlex Elder struct ceph_osd_data * 139a4ce40a9SAlex Elder osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, 140406e2c9fSAlex Elder unsigned int which) 141a4ce40a9SAlex Elder { 142863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, extent, osd_data); 143a4ce40a9SAlex Elder } 144a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data); 145a4ce40a9SAlex Elder 14649719778SAlex Elder void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, 14749719778SAlex Elder unsigned int which, struct page **pages, 14849719778SAlex Elder u64 length, u32 alignment, 14949719778SAlex Elder bool pages_from_pool, bool own_pages) 15049719778SAlex Elder { 15149719778SAlex Elder struct ceph_osd_data *osd_data; 15249719778SAlex Elder 15349719778SAlex Elder osd_data = osd_req_op_raw_data_in(osd_req, which); 15449719778SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 15549719778SAlex Elder pages_from_pool, own_pages); 15649719778SAlex Elder } 15749719778SAlex Elder EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); 15849719778SAlex Elder 159a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, 160406e2c9fSAlex Elder unsigned int which, struct page **pages, 161406e2c9fSAlex Elder u64 length, u32 alignment, 162a4ce40a9SAlex Elder bool pages_from_pool, bool own_pages) 163a4ce40a9SAlex Elder { 164a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 165a4ce40a9SAlex Elder 166863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 167a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 168a4ce40a9SAlex Elder pages_from_pool, own_pages); 169a4ce40a9SAlex Elder } 170a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); 171a4ce40a9SAlex Elder 172a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, 173406e2c9fSAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 174a4ce40a9SAlex Elder { 175a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 176a4ce40a9SAlex Elder 177863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 178a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 179a4ce40a9SAlex Elder } 180a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); 181a4ce40a9SAlex Elder 182a4ce40a9SAlex Elder #ifdef CONFIG_BLOCK 183a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, 184406e2c9fSAlex Elder unsigned int which, struct bio *bio, size_t bio_length) 185a4ce40a9SAlex Elder { 186a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 187863c7eb5SAlex Elder 188863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 189a4ce40a9SAlex Elder ceph_osd_data_bio_init(osd_data, bio, bio_length); 190a4ce40a9SAlex Elder } 191a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); 192a4ce40a9SAlex Elder #endif /* CONFIG_BLOCK */ 193a4ce40a9SAlex Elder 194a4ce40a9SAlex Elder static void osd_req_op_cls_request_info_pagelist( 195a4ce40a9SAlex Elder struct ceph_osd_request *osd_req, 196a4ce40a9SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 197a4ce40a9SAlex Elder { 198a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 199a4ce40a9SAlex Elder 200863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_info); 201a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 202a4ce40a9SAlex Elder } 203a4ce40a9SAlex Elder 20404017e29SAlex Elder void osd_req_op_cls_request_data_pagelist( 20504017e29SAlex Elder struct ceph_osd_request *osd_req, 20604017e29SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 20704017e29SAlex Elder { 20804017e29SAlex Elder struct ceph_osd_data *osd_data; 20904017e29SAlex Elder 210863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 21104017e29SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 21204017e29SAlex Elder } 21304017e29SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); 21404017e29SAlex Elder 2156c57b554SAlex Elder void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, 2166c57b554SAlex Elder unsigned int which, struct page **pages, u64 length, 2176c57b554SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 2186c57b554SAlex Elder { 2196c57b554SAlex Elder struct ceph_osd_data *osd_data; 2206c57b554SAlex Elder 2216c57b554SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 2226c57b554SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 2236c57b554SAlex Elder pages_from_pool, own_pages); 2246c57b554SAlex Elder } 2256c57b554SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); 2266c57b554SAlex Elder 227a4ce40a9SAlex Elder void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, 228a4ce40a9SAlex Elder unsigned int which, struct page **pages, u64 length, 229a4ce40a9SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 230a4ce40a9SAlex Elder { 231a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 232a4ce40a9SAlex Elder 233863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, response_data); 234a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 235a4ce40a9SAlex Elder pages_from_pool, own_pages); 236a4ce40a9SAlex Elder } 237a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); 238a4ce40a9SAlex Elder 23923c08a9cSAlex Elder static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) 24023c08a9cSAlex Elder { 24123c08a9cSAlex Elder switch (osd_data->type) { 24223c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_NONE: 24323c08a9cSAlex Elder return 0; 24423c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGES: 24523c08a9cSAlex Elder return osd_data->length; 24623c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGELIST: 24723c08a9cSAlex Elder return (u64)osd_data->pagelist->length; 24823c08a9cSAlex Elder #ifdef CONFIG_BLOCK 24923c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_BIO: 25023c08a9cSAlex Elder return (u64)osd_data->bio_length; 25123c08a9cSAlex Elder #endif /* CONFIG_BLOCK */ 25223c08a9cSAlex Elder default: 25323c08a9cSAlex Elder WARN(true, "unrecognized data type %d\n", (int)osd_data->type); 25423c08a9cSAlex Elder return 0; 25523c08a9cSAlex Elder } 25623c08a9cSAlex Elder } 25723c08a9cSAlex Elder 258c54d47bfSAlex Elder static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 259c54d47bfSAlex Elder { 2605476492fSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { 261c54d47bfSAlex Elder int num_pages; 262c54d47bfSAlex Elder 263c54d47bfSAlex Elder num_pages = calc_pages_for((u64)osd_data->alignment, 264c54d47bfSAlex Elder (u64)osd_data->length); 265c54d47bfSAlex Elder ceph_release_page_vector(osd_data->pages, num_pages); 266c54d47bfSAlex Elder } 2675476492fSAlex Elder ceph_osd_data_init(osd_data); 2685476492fSAlex Elder } 2695476492fSAlex Elder 2705476492fSAlex Elder static void osd_req_op_data_release(struct ceph_osd_request *osd_req, 2715476492fSAlex Elder unsigned int which) 2725476492fSAlex Elder { 2735476492fSAlex Elder struct ceph_osd_req_op *op; 2745476492fSAlex Elder 2755476492fSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 2765476492fSAlex Elder op = &osd_req->r_ops[which]; 2775476492fSAlex Elder 2785476492fSAlex Elder switch (op->op) { 2795476492fSAlex Elder case CEPH_OSD_OP_READ: 2805476492fSAlex Elder case CEPH_OSD_OP_WRITE: 281e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 2825476492fSAlex Elder ceph_osd_data_release(&op->extent.osd_data); 2835476492fSAlex Elder break; 2845476492fSAlex Elder case CEPH_OSD_OP_CALL: 2855476492fSAlex Elder ceph_osd_data_release(&op->cls.request_info); 28604017e29SAlex Elder ceph_osd_data_release(&op->cls.request_data); 2875476492fSAlex Elder ceph_osd_data_release(&op->cls.response_data); 2885476492fSAlex Elder break; 289d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 290d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 291d74b50beSYan, Zheng ceph_osd_data_release(&op->xattr.osd_data); 292d74b50beSYan, Zheng break; 29366ba609fSYan, Zheng case CEPH_OSD_OP_STAT: 29466ba609fSYan, Zheng ceph_osd_data_release(&op->raw_data_in); 29566ba609fSYan, Zheng break; 2965476492fSAlex Elder default: 2975476492fSAlex Elder break; 2985476492fSAlex Elder } 299c54d47bfSAlex Elder } 300c54d47bfSAlex Elder 3013d14c5d2SYehuda Sadeh /* 30263244fa1SIlya Dryomov * Assumes @t is zero-initialized. 30363244fa1SIlya Dryomov */ 30463244fa1SIlya Dryomov static void target_init(struct ceph_osd_request_target *t) 30563244fa1SIlya Dryomov { 30663244fa1SIlya Dryomov ceph_oid_init(&t->base_oid); 30763244fa1SIlya Dryomov ceph_oloc_init(&t->base_oloc); 30863244fa1SIlya Dryomov ceph_oid_init(&t->target_oid); 30963244fa1SIlya Dryomov ceph_oloc_init(&t->target_oloc); 31063244fa1SIlya Dryomov 31163244fa1SIlya Dryomov ceph_osds_init(&t->acting); 31263244fa1SIlya Dryomov ceph_osds_init(&t->up); 31363244fa1SIlya Dryomov t->size = -1; 31463244fa1SIlya Dryomov t->min_size = -1; 31563244fa1SIlya Dryomov 31663244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 31763244fa1SIlya Dryomov } 31863244fa1SIlya Dryomov 31963244fa1SIlya Dryomov static void target_destroy(struct ceph_osd_request_target *t) 32063244fa1SIlya Dryomov { 32163244fa1SIlya Dryomov ceph_oid_destroy(&t->base_oid); 32263244fa1SIlya Dryomov ceph_oid_destroy(&t->target_oid); 32363244fa1SIlya Dryomov } 32463244fa1SIlya Dryomov 32563244fa1SIlya Dryomov /* 3263d14c5d2SYehuda Sadeh * requests 3273d14c5d2SYehuda Sadeh */ 3289e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 3293d14c5d2SYehuda Sadeh { 3309e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 3319e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 3325476492fSAlex Elder unsigned int which; 3333d14c5d2SYehuda Sadeh 3349e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 3359e94af20SIlya Dryomov req->r_request, req->r_reply); 3366562d661SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 3376562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_req_lru_item)); 3386562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_osd_item)); 3396562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_linger_item)); 3406562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_linger_osd_item)); 3416562d661SIlya Dryomov WARN_ON(req->r_osd); 3429e94af20SIlya Dryomov 3433d14c5d2SYehuda Sadeh if (req->r_request) 3443d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 345ace6d3a9SAlex Elder if (req->r_reply) { 3468921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 347ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 348ace6d3a9SAlex Elder } 3490fff87ecSAlex Elder 3505476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 3515476492fSAlex Elder osd_req_op_data_release(req, which); 3520fff87ecSAlex Elder 353d30291b9SIlya Dryomov ceph_oid_destroy(&req->r_base_oid); 354d30291b9SIlya Dryomov ceph_oid_destroy(&req->r_target_oid); 3553d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 356d30291b9SIlya Dryomov 3573d14c5d2SYehuda Sadeh if (req->r_mempool) 3583d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 3593f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 3605522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 3613f1af42aSIlya Dryomov else 3623f1af42aSIlya Dryomov kfree(req); 3633d14c5d2SYehuda Sadeh } 3649e94af20SIlya Dryomov 3659e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 3669e94af20SIlya Dryomov { 3679e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3689e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3699e94af20SIlya Dryomov kref_get(&req->r_kref); 3709e94af20SIlya Dryomov } 3719e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 3729e94af20SIlya Dryomov 3739e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 3749e94af20SIlya Dryomov { 3753ed97d63SIlya Dryomov if (req) { 3769e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3779e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3789e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 3799e94af20SIlya Dryomov } 3803ed97d63SIlya Dryomov } 3819e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 3823d14c5d2SYehuda Sadeh 3833d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 3843d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 3851b83bef2SSage Weil unsigned int num_ops, 3863d14c5d2SYehuda Sadeh bool use_mempool, 38754a54007SAlex Elder gfp_t gfp_flags) 3883d14c5d2SYehuda Sadeh { 3893d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 3903d14c5d2SYehuda Sadeh 3913d14c5d2SYehuda Sadeh if (use_mempool) { 3923f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 3933d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 3943f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 3953f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 3963d14c5d2SYehuda Sadeh } else { 3973f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 3983f1af42aSIlya Dryomov req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), 3993f1af42aSIlya Dryomov gfp_flags); 4003d14c5d2SYehuda Sadeh } 4013f1af42aSIlya Dryomov if (unlikely(!req)) 4023d14c5d2SYehuda Sadeh return NULL; 4033d14c5d2SYehuda Sadeh 4043f1af42aSIlya Dryomov /* req only, each op is zeroed in _osd_req_op_init() */ 4053f1af42aSIlya Dryomov memset(req, 0, sizeof(*req)); 4063f1af42aSIlya Dryomov 4073d14c5d2SYehuda Sadeh req->r_osdc = osdc; 4083d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 40979528734SAlex Elder req->r_num_ops = num_ops; 41084127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 41184127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 4123d14c5d2SYehuda Sadeh 4133d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 4143d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 4153d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 416a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 4173d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 418a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 4191d0326b1SIlya Dryomov INIT_LIST_HEAD(&req->r_linger_osd_item); 420935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 421cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 422cd43045cSSage Weil 423d30291b9SIlya Dryomov ceph_oid_init(&req->r_base_oid); 4243c972c95SIlya Dryomov req->r_base_oloc.pool = -1; 425d30291b9SIlya Dryomov ceph_oid_init(&req->r_target_oid); 426205ee118SIlya Dryomov req->r_target_oloc.pool = -1; 42722116525SIlya Dryomov 42813d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 42913d1ad16SIlya Dryomov return req; 4303f1af42aSIlya Dryomov } 43113d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 4323f1af42aSIlya Dryomov 43313d1ad16SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 43413d1ad16SIlya Dryomov { 43513d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 43613d1ad16SIlya Dryomov struct ceph_msg *msg; 43713d1ad16SIlya Dryomov int msg_size; 4383d14c5d2SYehuda Sadeh 439d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 440d30291b9SIlya Dryomov 44113d1ad16SIlya Dryomov /* create request message */ 442ae458f5aSIlya Dryomov msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */ 443ae458f5aSIlya Dryomov msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */ 444ae458f5aSIlya Dryomov msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 445ae458f5aSIlya Dryomov msg_size += 1 + 8 + 4 + 4; /* pgid */ 44613d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 44713d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 448ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 449ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 45013d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 451ae458f5aSIlya Dryomov msg_size += 4; /* retry_attempt */ 452ae458f5aSIlya Dryomov 45313d1ad16SIlya Dryomov if (req->r_mempool) 4543d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 4553d14c5d2SYehuda Sadeh else 45613d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); 45713d1ad16SIlya Dryomov if (!msg) 45813d1ad16SIlya Dryomov return -ENOMEM; 4593d14c5d2SYehuda Sadeh 4603d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 4613d14c5d2SYehuda Sadeh req->r_request = msg; 4623d14c5d2SYehuda Sadeh 46313d1ad16SIlya Dryomov /* create reply message */ 46413d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 465711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 466711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 46713d1ad16SIlya Dryomov 46813d1ad16SIlya Dryomov if (req->r_mempool) 46913d1ad16SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 47013d1ad16SIlya Dryomov else 47113d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); 47213d1ad16SIlya Dryomov if (!msg) 47313d1ad16SIlya Dryomov return -ENOMEM; 47413d1ad16SIlya Dryomov 47513d1ad16SIlya Dryomov req->r_reply = msg; 47613d1ad16SIlya Dryomov 47713d1ad16SIlya Dryomov return 0; 47813d1ad16SIlya Dryomov } 47913d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 4803d14c5d2SYehuda Sadeh 481a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 482a8dd0a37SAlex Elder { 483a8dd0a37SAlex Elder switch (opcode) { 48470b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 48570b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 48670b5bfa3SIlya Dryomov #undef GENERATE_CASE 487a8dd0a37SAlex Elder default: 488a8dd0a37SAlex Elder return false; 489a8dd0a37SAlex Elder } 490a8dd0a37SAlex Elder } 491a8dd0a37SAlex Elder 49233803f33SAlex Elder /* 49333803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 49433803f33SAlex Elder * other information associated with them. It also serves as a 49533803f33SAlex Elder * common init routine for all the other init functions, below. 49633803f33SAlex Elder */ 497c99d2d4aSAlex Elder static struct ceph_osd_req_op * 49849719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 499144cba14SYan, Zheng u16 opcode, u32 flags) 50033803f33SAlex Elder { 501c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 502c99d2d4aSAlex Elder 503c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 50433803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 50533803f33SAlex Elder 506c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 50733803f33SAlex Elder memset(op, 0, sizeof (*op)); 50833803f33SAlex Elder op->op = opcode; 509144cba14SYan, Zheng op->flags = flags; 510c99d2d4aSAlex Elder 511c99d2d4aSAlex Elder return op; 51233803f33SAlex Elder } 51333803f33SAlex Elder 51449719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 515144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 51649719778SAlex Elder { 517144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 51849719778SAlex Elder } 51949719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 52049719778SAlex Elder 521c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 522c99d2d4aSAlex Elder unsigned int which, u16 opcode, 52333803f33SAlex Elder u64 offset, u64 length, 52433803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 52533803f33SAlex Elder { 526144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 527144cba14SYan, Zheng opcode, 0); 52833803f33SAlex Elder size_t payload_len = 0; 52933803f33SAlex Elder 530ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 531e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 532e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 53333803f33SAlex Elder 53433803f33SAlex Elder op->extent.offset = offset; 53533803f33SAlex Elder op->extent.length = length; 53633803f33SAlex Elder op->extent.truncate_size = truncate_size; 53733803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 538e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 53933803f33SAlex Elder payload_len += length; 54033803f33SAlex Elder 541de2aa102SIlya Dryomov op->indata_len = payload_len; 54233803f33SAlex Elder } 54333803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 54433803f33SAlex Elder 545c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 546c99d2d4aSAlex Elder unsigned int which, u64 length) 547e5975c7cSAlex Elder { 548c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 549c99d2d4aSAlex Elder u64 previous; 550c99d2d4aSAlex Elder 551c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 552c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 553c99d2d4aSAlex Elder previous = op->extent.length; 554e5975c7cSAlex Elder 555e5975c7cSAlex Elder if (length == previous) 556e5975c7cSAlex Elder return; /* Nothing to do */ 557e5975c7cSAlex Elder BUG_ON(length > previous); 558e5975c7cSAlex Elder 559e5975c7cSAlex Elder op->extent.length = length; 560de2aa102SIlya Dryomov op->indata_len -= previous - length; 561e5975c7cSAlex Elder } 562e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 563e5975c7cSAlex Elder 5642c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 5652c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 5662c63f49aSYan, Zheng { 5672c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 5682c63f49aSYan, Zheng 5692c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 5702c63f49aSYan, Zheng 5712c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 5722c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 5732c63f49aSYan, Zheng /* dup previous one */ 5742c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 5752c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 5762c63f49aSYan, Zheng op->extent = prev_op->extent; 5772c63f49aSYan, Zheng /* adjust offset */ 5782c63f49aSYan, Zheng op->extent.offset += offset_inc; 5792c63f49aSYan, Zheng op->extent.length -= offset_inc; 5802c63f49aSYan, Zheng 5812c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 5822c63f49aSYan, Zheng op->indata_len -= offset_inc; 5832c63f49aSYan, Zheng } 5842c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 5852c63f49aSYan, Zheng 586c99d2d4aSAlex Elder void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 58704017e29SAlex Elder u16 opcode, const char *class, const char *method) 58833803f33SAlex Elder { 589144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 590144cba14SYan, Zheng opcode, 0); 5915f562df5SAlex Elder struct ceph_pagelist *pagelist; 59233803f33SAlex Elder size_t payload_len = 0; 59333803f33SAlex Elder size_t size; 59433803f33SAlex Elder 59533803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 59633803f33SAlex Elder 5975f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 5985f562df5SAlex Elder BUG_ON(!pagelist); 5995f562df5SAlex Elder ceph_pagelist_init(pagelist); 6005f562df5SAlex Elder 60133803f33SAlex Elder op->cls.class_name = class; 60233803f33SAlex Elder size = strlen(class); 60333803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 60433803f33SAlex Elder op->cls.class_len = size; 6055f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 60633803f33SAlex Elder payload_len += size; 60733803f33SAlex Elder 60833803f33SAlex Elder op->cls.method_name = method; 60933803f33SAlex Elder size = strlen(method); 61033803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 61133803f33SAlex Elder op->cls.method_len = size; 6125f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 61333803f33SAlex Elder payload_len += size; 61433803f33SAlex Elder 615a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 6165f562df5SAlex Elder 61733803f33SAlex Elder op->cls.argc = 0; /* currently unused */ 61833803f33SAlex Elder 619de2aa102SIlya Dryomov op->indata_len = payload_len; 62033803f33SAlex Elder } 62133803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 6228c042b0dSAlex Elder 623d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 624d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 625d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 626d74b50beSYan, Zheng { 627144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 628144cba14SYan, Zheng opcode, 0); 629d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 630d74b50beSYan, Zheng size_t payload_len; 631d74b50beSYan, Zheng 632d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 633d74b50beSYan, Zheng 634d74b50beSYan, Zheng pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); 635d74b50beSYan, Zheng if (!pagelist) 636d74b50beSYan, Zheng return -ENOMEM; 637d74b50beSYan, Zheng 638d74b50beSYan, Zheng ceph_pagelist_init(pagelist); 639d74b50beSYan, Zheng 640d74b50beSYan, Zheng payload_len = strlen(name); 641d74b50beSYan, Zheng op->xattr.name_len = payload_len; 642d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 643d74b50beSYan, Zheng 644d74b50beSYan, Zheng op->xattr.value_len = size; 645d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 646d74b50beSYan, Zheng payload_len += size; 647d74b50beSYan, Zheng 648d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 649d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 650d74b50beSYan, Zheng 651d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 652de2aa102SIlya Dryomov op->indata_len = payload_len; 653d74b50beSYan, Zheng return 0; 654d74b50beSYan, Zheng } 655d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 656d74b50beSYan, Zheng 657c99d2d4aSAlex Elder void osd_req_op_watch_init(struct ceph_osd_request *osd_req, 658c99d2d4aSAlex Elder unsigned int which, u16 opcode, 65933803f33SAlex Elder u64 cookie, u64 version, int flag) 66033803f33SAlex Elder { 661144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 662144cba14SYan, Zheng opcode, 0); 66333803f33SAlex Elder 664c99d2d4aSAlex Elder BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 66533803f33SAlex Elder 66633803f33SAlex Elder op->watch.cookie = cookie; 6679ef1ee5aSAlex Elder op->watch.ver = version; 66833803f33SAlex Elder if (opcode == CEPH_OSD_OP_WATCH && flag) 66933803f33SAlex Elder op->watch.flag = (u8)1; 67033803f33SAlex Elder } 67133803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_watch_init); 67233803f33SAlex Elder 673c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 674c647b8a8SIlya Dryomov unsigned int which, 675c647b8a8SIlya Dryomov u64 expected_object_size, 676c647b8a8SIlya Dryomov u64 expected_write_size) 677c647b8a8SIlya Dryomov { 678c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 679144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 680144cba14SYan, Zheng 0); 681c647b8a8SIlya Dryomov 682c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 683c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 684c647b8a8SIlya Dryomov 685c647b8a8SIlya Dryomov /* 686c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 687c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 688c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 689c647b8a8SIlya Dryomov */ 690c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 691c647b8a8SIlya Dryomov } 692c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 693c647b8a8SIlya Dryomov 69490af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 695ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 696ec9123c5SAlex Elder { 697ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 698ec9123c5SAlex Elder 699ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 700ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 701ec9123c5SAlex Elder if (length) 70290af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 703ec9123c5SAlex Elder length, osd_data->alignment); 704ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 705ec9123c5SAlex Elder BUG_ON(!length); 70690af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 707ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 708ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 70990af3602SAlex Elder ceph_msg_data_add_bio(msg, osd_data->bio, length); 710ec9123c5SAlex Elder #endif 711ec9123c5SAlex Elder } else { 712ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 713ec9123c5SAlex Elder } 714ec9123c5SAlex Elder } 715ec9123c5SAlex Elder 716175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 71779528734SAlex Elder struct ceph_osd_op *dst, unsigned int which) 7183d14c5d2SYehuda Sadeh { 71979528734SAlex Elder struct ceph_osd_req_op *src; 72004017e29SAlex Elder struct ceph_osd_data *osd_data; 72154d50649SAlex Elder u64 request_data_len = 0; 72204017e29SAlex Elder u64 data_length; 723175face2SAlex Elder 72479528734SAlex Elder BUG_ON(which >= req->r_num_ops); 72579528734SAlex Elder src = &req->r_ops[which]; 726a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 727a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 728a8dd0a37SAlex Elder 729a8dd0a37SAlex Elder return 0; 730a8dd0a37SAlex Elder } 7313d14c5d2SYehuda Sadeh 732065a68f9SAlex Elder switch (src->op) { 733fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 73449719778SAlex Elder osd_data = &src->raw_data_in; 73549719778SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 736fbfab539SAlex Elder break; 7373d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 7383d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 739e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 740ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 741ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 742e30b7577SIlya Dryomov if (src->op == CEPH_OSD_OP_WRITE || 743e30b7577SIlya Dryomov src->op == CEPH_OSD_OP_WRITEFULL) 74454d50649SAlex Elder request_data_len = src->extent.length; 745175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 746175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 7473d14c5d2SYehuda Sadeh dst->extent.truncate_size = 7483d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 7493d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 7503d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 75104017e29SAlex Elder osd_data = &src->extent.osd_data; 752e30b7577SIlya Dryomov if (src->op == CEPH_OSD_OP_WRITE || 753e30b7577SIlya Dryomov src->op == CEPH_OSD_OP_WRITEFULL) 75404017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 7555476492fSAlex Elder else 75604017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 7573d14c5d2SYehuda Sadeh break; 7583d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 7593d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 7603d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 76104017e29SAlex Elder osd_data = &src->cls.request_info; 76204017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 76304017e29SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); 76404017e29SAlex Elder request_data_len = osd_data->pagelist->length; 76504017e29SAlex Elder 76604017e29SAlex Elder osd_data = &src->cls.request_data; 76704017e29SAlex Elder data_length = ceph_osd_data_length(osd_data); 76804017e29SAlex Elder if (data_length) { 76904017e29SAlex Elder BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); 77004017e29SAlex Elder dst->cls.indata_len = cpu_to_le32(data_length); 77104017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 772de2aa102SIlya Dryomov src->indata_len += data_length; 77304017e29SAlex Elder request_data_len += data_length; 77404017e29SAlex Elder } 77504017e29SAlex Elder osd_data = &src->cls.response_data; 77604017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 7773d14c5d2SYehuda Sadeh break; 7783d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 7793d14c5d2SYehuda Sadeh break; 780a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 781a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 782a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 783a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 784a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 785a40c4f10SYehuda Sadeh break; 786c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 787c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 788c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 789c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 790c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 791c647b8a8SIlya Dryomov break; 792d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 793d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 794d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 795d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 796d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 797d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 798d74b50beSYan, Zheng osd_data = &src->xattr.osd_data; 799d74b50beSYan, Zheng ceph_osdc_msg_data_add(req->r_request, osd_data); 800d74b50beSYan, Zheng request_data_len = osd_data->pagelist->length; 801d74b50beSYan, Zheng break; 802864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 803864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 804864e9197SYan, Zheng break; 8053d14c5d2SYehuda Sadeh default: 8064c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 8078f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 8084c46459cSAlex Elder WARN_ON(1); 809a8dd0a37SAlex Elder 810a8dd0a37SAlex Elder return 0; 8113d14c5d2SYehuda Sadeh } 8127b25bf5fSIlya Dryomov 813a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 8147b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 815de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 816175face2SAlex Elder 81754d50649SAlex Elder return request_data_len; 8183d14c5d2SYehuda Sadeh } 8193d14c5d2SYehuda Sadeh 8203d14c5d2SYehuda Sadeh /* 8213d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 8223d14c5d2SYehuda Sadeh * extent as needed. 8233d14c5d2SYehuda Sadeh * 8243d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 8253d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 8263d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 8273d14c5d2SYehuda Sadeh * 8283d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 8293d14c5d2SYehuda Sadeh * data quickly. 8303d14c5d2SYehuda Sadeh */ 8313d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 8323d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 8333d14c5d2SYehuda Sadeh struct ceph_vino vino, 834715e4cd4SYan, Zheng u64 off, u64 *plen, 835715e4cd4SYan, Zheng unsigned int which, int num_ops, 8363d14c5d2SYehuda Sadeh int opcode, int flags, 8373d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 8383d14c5d2SYehuda Sadeh u32 truncate_seq, 8393d14c5d2SYehuda Sadeh u64 truncate_size, 840153e5167SAlex Elder bool use_mempool) 8413d14c5d2SYehuda Sadeh { 8423d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 84375d1c941SAlex Elder u64 objnum = 0; 84475d1c941SAlex Elder u64 objoff = 0; 84575d1c941SAlex Elder u64 objlen = 0; 8466816282dSSage Weil int r; 8473d14c5d2SYehuda Sadeh 848ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 849864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 850864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 8513d14c5d2SYehuda Sadeh 852acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 853ae7ca4a3SAlex Elder GFP_NOFS); 85413d1ad16SIlya Dryomov if (!req) { 85513d1ad16SIlya Dryomov r = -ENOMEM; 85613d1ad16SIlya Dryomov goto fail; 85713d1ad16SIlya Dryomov } 85879528734SAlex Elder 859d178a9e7SAlex Elder req->r_flags = flags; 8603d14c5d2SYehuda Sadeh 8613d14c5d2SYehuda Sadeh /* calculate max write size */ 862a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 86313d1ad16SIlya Dryomov if (r) 86413d1ad16SIlya Dryomov goto fail; 865a19dadfbSAlex Elder 866864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 867144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 868864e9197SYan, Zheng } else { 869864e9197SYan, Zheng u32 object_size = le32_to_cpu(layout->fl_object_size); 870864e9197SYan, Zheng u32 object_base = off - objoff; 871ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 872d18d1e28SAlex Elder if (truncate_size <= object_base) { 873d18d1e28SAlex Elder truncate_size = 0; 874d18d1e28SAlex Elder } else { 875d18d1e28SAlex Elder truncate_size -= object_base; 876d18d1e28SAlex Elder if (truncate_size > object_size) 877d18d1e28SAlex Elder truncate_size = object_size; 878d18d1e28SAlex Elder } 879ccca4e37SYan, Zheng } 880715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 881b0270324SAlex Elder truncate_size, truncate_seq); 882864e9197SYan, Zheng } 883d18d1e28SAlex Elder 8843c972c95SIlya Dryomov req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); 885d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 886dbe0fc41SAlex Elder 88713d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 88813d1ad16SIlya Dryomov if (r) 88913d1ad16SIlya Dryomov goto fail; 89013d1ad16SIlya Dryomov 8913d14c5d2SYehuda Sadeh return req; 89213d1ad16SIlya Dryomov 89313d1ad16SIlya Dryomov fail: 89413d1ad16SIlya Dryomov ceph_osdc_put_request(req); 89513d1ad16SIlya Dryomov return ERR_PTR(r); 8963d14c5d2SYehuda Sadeh } 8973d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 8983d14c5d2SYehuda Sadeh 8993d14c5d2SYehuda Sadeh /* 9003d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 9013d14c5d2SYehuda Sadeh */ 902fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 9033d14c5d2SYehuda Sadeh 9043d14c5d2SYehuda Sadeh static struct ceph_osd_request * 9053d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 9063d14c5d2SYehuda Sadeh u64 tid) 9073d14c5d2SYehuda Sadeh { 9083d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 9093d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 9103d14c5d2SYehuda Sadeh 9113d14c5d2SYehuda Sadeh while (n) { 9123d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 9133d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 9143d14c5d2SYehuda Sadeh if (!n->rb_left) 9153d14c5d2SYehuda Sadeh return req; 9163d14c5d2SYehuda Sadeh n = n->rb_left; 9173d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 9183d14c5d2SYehuda Sadeh n = n->rb_right; 9193d14c5d2SYehuda Sadeh } else { 9203d14c5d2SYehuda Sadeh return req; 9213d14c5d2SYehuda Sadeh } 9223d14c5d2SYehuda Sadeh } 9233d14c5d2SYehuda Sadeh return NULL; 9243d14c5d2SYehuda Sadeh } 9253d14c5d2SYehuda Sadeh 9262cc6128aSIlya Dryomov static void __kick_linger_request(struct ceph_osd_request *req) 9272cc6128aSIlya Dryomov { 9282cc6128aSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 9292cc6128aSIlya Dryomov struct ceph_osd *osd = req->r_osd; 9302cc6128aSIlya Dryomov 9312cc6128aSIlya Dryomov /* 9322cc6128aSIlya Dryomov * Linger requests need to be resent with a new tid to avoid 9332cc6128aSIlya Dryomov * the dup op detection logic on the OSDs. Achieve this with 9342cc6128aSIlya Dryomov * a re-register dance instead of open-coding. 9352cc6128aSIlya Dryomov */ 9362cc6128aSIlya Dryomov ceph_osdc_get_request(req); 9372cc6128aSIlya Dryomov if (!list_empty(&req->r_linger_item)) 9382cc6128aSIlya Dryomov __unregister_linger_request(osdc, req); 9392cc6128aSIlya Dryomov else 9402cc6128aSIlya Dryomov __unregister_request(osdc, req); 9412cc6128aSIlya Dryomov __register_request(osdc, req); 9422cc6128aSIlya Dryomov ceph_osdc_put_request(req); 9432cc6128aSIlya Dryomov 9442cc6128aSIlya Dryomov /* 9452cc6128aSIlya Dryomov * Unless request has been registered as both normal and 9462cc6128aSIlya Dryomov * lingering, __unregister{,_linger}_request clears r_osd. 9472cc6128aSIlya Dryomov * However, here we need to preserve r_osd to make sure we 9482cc6128aSIlya Dryomov * requeue on the same OSD. 9492cc6128aSIlya Dryomov */ 9502cc6128aSIlya Dryomov WARN_ON(req->r_osd || !osd); 9512cc6128aSIlya Dryomov req->r_osd = osd; 9522cc6128aSIlya Dryomov 9532cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, req->r_tid); 9542cc6128aSIlya Dryomov __enqueue_request(req); 9552cc6128aSIlya Dryomov } 9562cc6128aSIlya Dryomov 9576f6c7006SSage Weil /* 9586f6c7006SSage Weil * Resubmit requests pending on the given osd. 9596f6c7006SSage Weil */ 9606f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 9616f6c7006SSage Weil struct ceph_osd *osd) 9626f6c7006SSage Weil { 963a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 964e02493c0SAlex Elder LIST_HEAD(resend); 9652cc6128aSIlya Dryomov LIST_HEAD(resend_linger); 9666f6c7006SSage Weil int err; 9676f6c7006SSage Weil 9682cc6128aSIlya Dryomov dout("%s osd%d\n", __func__, osd->o_osd); 9696f6c7006SSage Weil err = __reset_osd(osdc, osd); 970685a7555SAlex Elder if (err) 9716f6c7006SSage Weil return; 9722cc6128aSIlya Dryomov 973e02493c0SAlex Elder /* 974e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 975e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 976e02493c0SAlex Elder * sent in tid order, and that is also the order they're 977e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 978e02493c0SAlex Elder * flight will be found first, followed by all requests that 979e02493c0SAlex Elder * have not yet been sent. And to resend requests while 980e02493c0SAlex Elder * preserving this order we will want to put any sent 981e02493c0SAlex Elder * requests back on the front of the osd client's unsent 982e02493c0SAlex Elder * list. 983e02493c0SAlex Elder * 984e02493c0SAlex Elder * So we build a separate ordered list of already-sent 985e02493c0SAlex Elder * requests for the affected osd and splice it onto the 986e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 987e02493c0SAlex Elder * request that has not yet been sent we're done. Those 988e02493c0SAlex Elder * requests are already sitting right where they belong. 989e02493c0SAlex Elder */ 9906f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 991e02493c0SAlex Elder if (!req->r_sent) 992e02493c0SAlex Elder break; 9932cc6128aSIlya Dryomov 9942cc6128aSIlya Dryomov if (!req->r_linger) { 9952cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, 9962cc6128aSIlya Dryomov req->r_tid); 997e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 9986f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 9992cc6128aSIlya Dryomov } else { 10002cc6128aSIlya Dryomov list_move_tail(&req->r_req_lru_item, &resend_linger); 10012cc6128aSIlya Dryomov } 10026f6c7006SSage Weil } 1003e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 1004a40c4f10SYehuda Sadeh 1005e02493c0SAlex Elder /* 10062cc6128aSIlya Dryomov * Both registered and not yet registered linger requests are 10072cc6128aSIlya Dryomov * enqueued with a new tid on the same OSD. We add/move them 10082cc6128aSIlya Dryomov * to req_unsent/o_requests at the end to keep things in tid 10092cc6128aSIlya Dryomov * order. 1010e02493c0SAlex Elder */ 1011a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 10121d0326b1SIlya Dryomov r_linger_osd_item) { 10132cc6128aSIlya Dryomov WARN_ON(!list_empty(&req->r_req_lru_item)); 10142cc6128aSIlya Dryomov __kick_linger_request(req); 1015a40c4f10SYehuda Sadeh } 10162cc6128aSIlya Dryomov 10172cc6128aSIlya Dryomov list_for_each_entry_safe(req, nreq, &resend_linger, r_req_lru_item) 10182cc6128aSIlya Dryomov __kick_linger_request(req); 10196f6c7006SSage Weil } 10206f6c7006SSage Weil 10213d14c5d2SYehuda Sadeh /* 10223d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 10233d14c5d2SYehuda Sadeh */ 10243d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 10253d14c5d2SYehuda Sadeh { 10263d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 10273d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 10283d14c5d2SYehuda Sadeh 10293d14c5d2SYehuda Sadeh if (!osd) 10303d14c5d2SYehuda Sadeh return; 10313d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 10323d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 10333d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 103483aff95eSSage Weil mutex_lock(&osdc->request_mutex); 103583aff95eSSage Weil __kick_osd_requests(osdc, osd); 1036f9d25199SAlex Elder __send_queued(osdc); 103783aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 10383d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 10393d14c5d2SYehuda Sadeh } 10403d14c5d2SYehuda Sadeh 10413d14c5d2SYehuda Sadeh /* 10423d14c5d2SYehuda Sadeh * Track open sessions with osds. 10433d14c5d2SYehuda Sadeh */ 1044e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 10453d14c5d2SYehuda Sadeh { 10463d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10473d14c5d2SYehuda Sadeh 10483d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 10493d14c5d2SYehuda Sadeh if (!osd) 10503d14c5d2SYehuda Sadeh return NULL; 10513d14c5d2SYehuda Sadeh 10523d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 10533d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1054e10006f8SAlex Elder osd->o_osd = onum; 1055f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 10563d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 1057a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 10583d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 10593d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 10603d14c5d2SYehuda Sadeh 1061b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 10623d14c5d2SYehuda Sadeh 10633d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 10643d14c5d2SYehuda Sadeh return osd; 10653d14c5d2SYehuda Sadeh } 10663d14c5d2SYehuda Sadeh 10673d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 10683d14c5d2SYehuda Sadeh { 10693d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 10703d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 10713d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 10723d14c5d2SYehuda Sadeh return osd; 10733d14c5d2SYehuda Sadeh } else { 10743d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 10753d14c5d2SYehuda Sadeh return NULL; 10763d14c5d2SYehuda Sadeh } 10773d14c5d2SYehuda Sadeh } 10783d14c5d2SYehuda Sadeh 10793d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 10803d14c5d2SYehuda Sadeh { 10813d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 10823d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 1083b28ec2f3SIlya Dryomov if (atomic_dec_and_test(&osd->o_ref)) { 1084b28ec2f3SIlya Dryomov if (osd->o_auth.authorizer) 10856c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 10863d14c5d2SYehuda Sadeh kfree(osd); 10873d14c5d2SYehuda Sadeh } 10883d14c5d2SYehuda Sadeh } 10893d14c5d2SYehuda Sadeh 1090fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1091fcd00b68SIlya Dryomov 10923d14c5d2SYehuda Sadeh /* 10933d14c5d2SYehuda Sadeh * remove an osd from our map 10943d14c5d2SYehuda Sadeh */ 10953d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 10963d14c5d2SYehuda Sadeh { 10977eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 1098cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_requests)); 1099cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_linger_requests)); 11007c6e6fc5SIlya Dryomov 11013d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 1102fcd00b68SIlya Dryomov erase_osd(&osdc->osds, osd); 11037eb71e03SIlya Dryomov } 11047eb71e03SIlya Dryomov 11057eb71e03SIlya Dryomov static void remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 11067eb71e03SIlya Dryomov { 11077eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 11087eb71e03SIlya Dryomov 11097eb71e03SIlya Dryomov if (!RB_EMPTY_NODE(&osd->o_node)) { 11103d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 11117eb71e03SIlya Dryomov __remove_osd(osdc, osd); 11123d14c5d2SYehuda Sadeh put_osd(osd); 11133d14c5d2SYehuda Sadeh } 11147eb71e03SIlya Dryomov } 11153d14c5d2SYehuda Sadeh 11163d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 11173d14c5d2SYehuda Sadeh struct ceph_osd *osd) 11183d14c5d2SYehuda Sadeh { 1119bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 11203d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1121bbf37ec3SIlya Dryomov 11223d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 1123a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 11243d14c5d2SYehuda Sadeh } 11253d14c5d2SYehuda Sadeh 1126bbf37ec3SIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd_client *osdc, 1127bbf37ec3SIlya Dryomov struct ceph_osd *osd) 1128bbf37ec3SIlya Dryomov { 1129bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 1130bbf37ec3SIlya Dryomov 1131bbf37ec3SIlya Dryomov if (list_empty(&osd->o_requests) && 1132bbf37ec3SIlya Dryomov list_empty(&osd->o_linger_requests)) 1133bbf37ec3SIlya Dryomov __move_osd_to_lru(osdc, osd); 1134bbf37ec3SIlya Dryomov } 1135bbf37ec3SIlya Dryomov 11363d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 11373d14c5d2SYehuda Sadeh { 11383d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 11393d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 11403d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 11413d14c5d2SYehuda Sadeh } 11423d14c5d2SYehuda Sadeh 11433d14c5d2SYehuda Sadeh /* 11443d14c5d2SYehuda Sadeh * reset osd connect 11453d14c5d2SYehuda Sadeh */ 11463d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 11473d14c5d2SYehuda Sadeh { 1148c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 11493d14c5d2SYehuda Sadeh 11503d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 1151a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 1152a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 11537eb71e03SIlya Dryomov remove_osd(osdc, osd); 1154c3acb181SAlex Elder return -ENODEV; 1155c3acb181SAlex Elder } 1156c3acb181SAlex Elder 1157c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 1158c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 11593d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 1160c3acb181SAlex Elder struct ceph_osd_request *req; 1161c3acb181SAlex Elder 11623d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 11630b4af2e8SIlya Dryomov "letting msgr retry\n"); 11643d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 11653d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 11663d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1167c3acb181SAlex Elder 1168c3acb181SAlex Elder return -EAGAIN; 11693d14c5d2SYehuda Sadeh } 1170c3acb181SAlex Elder 1171c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1172c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1173c3acb181SAlex Elder osd->o_incarnation++; 1174c3acb181SAlex Elder 1175c3acb181SAlex Elder return 0; 11763d14c5d2SYehuda Sadeh } 11773d14c5d2SYehuda Sadeh 11783d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 11793d14c5d2SYehuda Sadeh { 11803d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 1181a319bf56SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 11823d14c5d2SYehuda Sadeh } 11833d14c5d2SYehuda Sadeh 11843d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 11853d14c5d2SYehuda Sadeh { 11863d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 11873d14c5d2SYehuda Sadeh } 11883d14c5d2SYehuda Sadeh 11893d14c5d2SYehuda Sadeh /* 11903d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 11913d14c5d2SYehuda Sadeh * the timeout event. 11923d14c5d2SYehuda Sadeh */ 1193a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 11943d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 11953d14c5d2SYehuda Sadeh { 11963d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 11973d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 119877f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 1199fcd00b68SIlya Dryomov insert_request(&osdc->requests, req); 12003d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 12013d14c5d2SYehuda Sadeh osdc->num_requests++; 12023d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 12033d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 12043d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 12053d14c5d2SYehuda Sadeh } 1206a40c4f10SYehuda Sadeh } 1207a40c4f10SYehuda Sadeh 12083d14c5d2SYehuda Sadeh /* 12093d14c5d2SYehuda Sadeh * called under osdc->request_mutex 12103d14c5d2SYehuda Sadeh */ 12113d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 12123d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 12133d14c5d2SYehuda Sadeh { 121435f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 121535f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 121635f9f8a0SSage Weil req, req->r_tid); 121735f9f8a0SSage Weil return; 121835f9f8a0SSage Weil } 121935f9f8a0SSage Weil 12203d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 1221fcd00b68SIlya Dryomov erase_request(&osdc->requests, req); 12223d14c5d2SYehuda Sadeh osdc->num_requests--; 12233d14c5d2SYehuda Sadeh 12243d14c5d2SYehuda Sadeh if (req->r_osd) { 12253d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 12266740a845SAlex Elder ceph_msg_revoke(req->r_request); 12273d14c5d2SYehuda Sadeh 12283d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1229bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 12304f23409eSIlya Dryomov if (list_empty(&req->r_linger_osd_item)) 12313d14c5d2SYehuda Sadeh req->r_osd = NULL; 12323d14c5d2SYehuda Sadeh } 12333d14c5d2SYehuda Sadeh 12347d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 12353d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 12363d14c5d2SYehuda Sadeh 12373d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 12383d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 12393d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 12403d14c5d2SYehuda Sadeh } 12413d14c5d2SYehuda Sadeh } 12423d14c5d2SYehuda Sadeh 12433d14c5d2SYehuda Sadeh /* 12443d14c5d2SYehuda Sadeh * Cancel a previously queued request message 12453d14c5d2SYehuda Sadeh */ 12463d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 12473d14c5d2SYehuda Sadeh { 12483d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 12496740a845SAlex Elder ceph_msg_revoke(req->r_request); 12503d14c5d2SYehuda Sadeh req->r_sent = 0; 12513d14c5d2SYehuda Sadeh } 12523d14c5d2SYehuda Sadeh } 12533d14c5d2SYehuda Sadeh 1254a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1255a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1256a40c4f10SYehuda Sadeh { 1257af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1258af593064SIlya Dryomov WARN_ON(!req->r_linger); 1259af593064SIlya Dryomov 126096e4dac6SAlex Elder ceph_osdc_get_request(req); 1261a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 12626194ea89SSage Weil if (req->r_osd) 12631d0326b1SIlya Dryomov list_add_tail(&req->r_linger_osd_item, 12646194ea89SSage Weil &req->r_osd->o_linger_requests); 1265a40c4f10SYehuda Sadeh } 1266a40c4f10SYehuda Sadeh 1267a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1268a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1269a40c4f10SYehuda Sadeh { 1270af593064SIlya Dryomov WARN_ON(!req->r_linger); 1271af593064SIlya Dryomov 1272af593064SIlya Dryomov if (list_empty(&req->r_linger_item)) { 1273af593064SIlya Dryomov dout("%s %p tid %llu not registered\n", __func__, req, 1274af593064SIlya Dryomov req->r_tid); 1275af593064SIlya Dryomov return; 1276af593064SIlya Dryomov } 1277af593064SIlya Dryomov 1278af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1279a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 1280af593064SIlya Dryomov 128161c74035SAlex Elder if (req->r_osd) { 12821d0326b1SIlya Dryomov list_del_init(&req->r_linger_osd_item); 1283bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 1284fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1285a40c4f10SYehuda Sadeh req->r_osd = NULL; 1286a40c4f10SYehuda Sadeh } 128796e4dac6SAlex Elder ceph_osdc_put_request(req); 1288a40c4f10SYehuda Sadeh } 1289a40c4f10SYehuda Sadeh 1290a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1291a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1292a40c4f10SYehuda Sadeh { 1293a40c4f10SYehuda Sadeh if (!req->r_linger) { 1294a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1295a40c4f10SYehuda Sadeh req->r_linger = 1; 1296a40c4f10SYehuda Sadeh } 1297a40c4f10SYehuda Sadeh } 1298a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1299a40c4f10SYehuda Sadeh 130063244fa1SIlya Dryomov static bool __pool_full(struct ceph_pg_pool_info *pi) 130163244fa1SIlya Dryomov { 130263244fa1SIlya Dryomov return pi->flags & CEPH_POOL_FLAG_FULL; 130363244fa1SIlya Dryomov } 130463244fa1SIlya Dryomov 13053d14c5d2SYehuda Sadeh /* 1306d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1307d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1308d29adb34SJosh Durgin * 1309d29adb34SJosh Durgin * Caller should hold map_sem for read. 1310d29adb34SJosh Durgin */ 1311d29adb34SJosh Durgin static bool __req_should_be_paused(struct ceph_osd_client *osdc, 1312d29adb34SJosh Durgin struct ceph_osd_request *req) 1313d29adb34SJosh Durgin { 1314d29adb34SJosh Durgin bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 1315d29adb34SJosh Durgin bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 1316d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 1317d29adb34SJosh Durgin return (req->r_flags & CEPH_OSD_FLAG_READ && pauserd) || 1318d29adb34SJosh Durgin (req->r_flags & CEPH_OSD_FLAG_WRITE && pausewr); 1319d29adb34SJosh Durgin } 1320d29adb34SJosh Durgin 132163244fa1SIlya Dryomov static bool target_should_be_paused(struct ceph_osd_client *osdc, 132263244fa1SIlya Dryomov const struct ceph_osd_request_target *t, 132363244fa1SIlya Dryomov struct ceph_pg_pool_info *pi) 132463244fa1SIlya Dryomov { 132563244fa1SIlya Dryomov bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 132663244fa1SIlya Dryomov bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 132763244fa1SIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 132863244fa1SIlya Dryomov __pool_full(pi); 132963244fa1SIlya Dryomov 133063244fa1SIlya Dryomov WARN_ON(pi->id != t->base_oloc.pool); 133163244fa1SIlya Dryomov return (t->flags & CEPH_OSD_FLAG_READ && pauserd) || 133263244fa1SIlya Dryomov (t->flags & CEPH_OSD_FLAG_WRITE && pausewr); 133363244fa1SIlya Dryomov } 133463244fa1SIlya Dryomov 1335d29adb34SJosh Durgin /* 133617a13e40SIlya Dryomov * Calculate mapping of a request to a PG. Takes tiering into account. 133717a13e40SIlya Dryomov */ 133817a13e40SIlya Dryomov static int __calc_request_pg(struct ceph_osdmap *osdmap, 133917a13e40SIlya Dryomov struct ceph_osd_request *req, 134017a13e40SIlya Dryomov struct ceph_pg *pg_out) 134117a13e40SIlya Dryomov { 1342205ee118SIlya Dryomov bool need_check_tiering; 1343205ee118SIlya Dryomov 1344205ee118SIlya Dryomov need_check_tiering = false; 1345205ee118SIlya Dryomov if (req->r_target_oloc.pool == -1) { 1346205ee118SIlya Dryomov req->r_target_oloc = req->r_base_oloc; /* struct */ 1347205ee118SIlya Dryomov need_check_tiering = true; 1348205ee118SIlya Dryomov } 1349d30291b9SIlya Dryomov if (ceph_oid_empty(&req->r_target_oid)) { 1350205ee118SIlya Dryomov ceph_oid_copy(&req->r_target_oid, &req->r_base_oid); 1351205ee118SIlya Dryomov need_check_tiering = true; 1352205ee118SIlya Dryomov } 1353205ee118SIlya Dryomov 1354205ee118SIlya Dryomov if (need_check_tiering && 1355205ee118SIlya Dryomov (req->r_flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 135617a13e40SIlya Dryomov struct ceph_pg_pool_info *pi; 135717a13e40SIlya Dryomov 1358205ee118SIlya Dryomov pi = ceph_pg_pool_by_id(osdmap, req->r_target_oloc.pool); 135917a13e40SIlya Dryomov if (pi) { 136017a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_READ) && 136117a13e40SIlya Dryomov pi->read_tier >= 0) 1362205ee118SIlya Dryomov req->r_target_oloc.pool = pi->read_tier; 136317a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 136417a13e40SIlya Dryomov pi->write_tier >= 0) 1365205ee118SIlya Dryomov req->r_target_oloc.pool = pi->write_tier; 136617a13e40SIlya Dryomov } 136717a13e40SIlya Dryomov /* !pi is caught in ceph_oloc_oid_to_pg() */ 136817a13e40SIlya Dryomov } 136917a13e40SIlya Dryomov 1370d9591f5eSIlya Dryomov return ceph_object_locator_to_pg(osdmap, &req->r_target_oid, 1371d9591f5eSIlya Dryomov &req->r_target_oloc, pg_out); 137217a13e40SIlya Dryomov } 137317a13e40SIlya Dryomov 137463244fa1SIlya Dryomov enum calc_target_result { 137563244fa1SIlya Dryomov CALC_TARGET_NO_ACTION = 0, 137663244fa1SIlya Dryomov CALC_TARGET_NEED_RESEND, 137763244fa1SIlya Dryomov CALC_TARGET_POOL_DNE, 137863244fa1SIlya Dryomov }; 137963244fa1SIlya Dryomov 138063244fa1SIlya Dryomov static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 138163244fa1SIlya Dryomov struct ceph_osd_request_target *t, 138263244fa1SIlya Dryomov u32 *last_force_resend, 138363244fa1SIlya Dryomov bool any_change) 138463244fa1SIlya Dryomov { 138563244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 138663244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 138763244fa1SIlya Dryomov struct ceph_osds up, acting; 138863244fa1SIlya Dryomov bool force_resend = false; 138963244fa1SIlya Dryomov bool need_check_tiering = false; 139063244fa1SIlya Dryomov bool need_resend = false; 139163244fa1SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc->osdmap, 139263244fa1SIlya Dryomov CEPH_OSDMAP_SORTBITWISE); 139363244fa1SIlya Dryomov enum calc_target_result ct_res; 139463244fa1SIlya Dryomov int ret; 139563244fa1SIlya Dryomov 139663244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 139763244fa1SIlya Dryomov if (!pi) { 139863244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 139963244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 140063244fa1SIlya Dryomov goto out; 140163244fa1SIlya Dryomov } 140263244fa1SIlya Dryomov 140363244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 140463244fa1SIlya Dryomov if (last_force_resend && 140563244fa1SIlya Dryomov *last_force_resend < pi->last_force_request_resend) { 140663244fa1SIlya Dryomov *last_force_resend = pi->last_force_request_resend; 140763244fa1SIlya Dryomov force_resend = true; 140863244fa1SIlya Dryomov } else if (!last_force_resend) { 140963244fa1SIlya Dryomov force_resend = true; 141063244fa1SIlya Dryomov } 141163244fa1SIlya Dryomov } 141263244fa1SIlya Dryomov if (ceph_oid_empty(&t->target_oid) || force_resend) { 141363244fa1SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 141463244fa1SIlya Dryomov need_check_tiering = true; 141563244fa1SIlya Dryomov } 141663244fa1SIlya Dryomov if (ceph_oloc_empty(&t->target_oloc) || force_resend) { 141763244fa1SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 141863244fa1SIlya Dryomov need_check_tiering = true; 141963244fa1SIlya Dryomov } 142063244fa1SIlya Dryomov 142163244fa1SIlya Dryomov if (need_check_tiering && 142263244fa1SIlya Dryomov (t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 142363244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) 142463244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 142563244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) 142663244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 142763244fa1SIlya Dryomov } 142863244fa1SIlya Dryomov 142963244fa1SIlya Dryomov ret = ceph_object_locator_to_pg(osdc->osdmap, &t->target_oid, 143063244fa1SIlya Dryomov &t->target_oloc, &pgid); 143163244fa1SIlya Dryomov if (ret) { 143263244fa1SIlya Dryomov WARN_ON(ret != -ENOENT); 143363244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 143463244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 143563244fa1SIlya Dryomov goto out; 143663244fa1SIlya Dryomov } 143763244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 143863244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 143963244fa1SIlya Dryomov 144063244fa1SIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, &pgid, &up, &acting); 144163244fa1SIlya Dryomov if (any_change && 144263244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 144363244fa1SIlya Dryomov &acting, 144463244fa1SIlya Dryomov &t->up, 144563244fa1SIlya Dryomov &up, 144663244fa1SIlya Dryomov t->size, 144763244fa1SIlya Dryomov pi->size, 144863244fa1SIlya Dryomov t->min_size, 144963244fa1SIlya Dryomov pi->min_size, 145063244fa1SIlya Dryomov t->pg_num, 145163244fa1SIlya Dryomov pi->pg_num, 145263244fa1SIlya Dryomov t->sort_bitwise, 145363244fa1SIlya Dryomov sort_bitwise, 145463244fa1SIlya Dryomov &last_pgid)) 145563244fa1SIlya Dryomov force_resend = true; 145663244fa1SIlya Dryomov 145763244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 145863244fa1SIlya Dryomov t->paused = false; 145963244fa1SIlya Dryomov need_resend = true; 146063244fa1SIlya Dryomov } 146163244fa1SIlya Dryomov 146263244fa1SIlya Dryomov if (ceph_pg_compare(&t->pgid, &pgid) || 146363244fa1SIlya Dryomov ceph_osds_changed(&t->acting, &acting, any_change) || 146463244fa1SIlya Dryomov force_resend) { 146563244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 146663244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 146763244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 146863244fa1SIlya Dryomov t->size = pi->size; 146963244fa1SIlya Dryomov t->min_size = pi->min_size; 147063244fa1SIlya Dryomov t->pg_num = pi->pg_num; 147163244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 147263244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 147363244fa1SIlya Dryomov 147463244fa1SIlya Dryomov t->osd = acting.primary; 147563244fa1SIlya Dryomov need_resend = true; 147663244fa1SIlya Dryomov } 147763244fa1SIlya Dryomov 147863244fa1SIlya Dryomov ct_res = need_resend ? CALC_TARGET_NEED_RESEND : CALC_TARGET_NO_ACTION; 147963244fa1SIlya Dryomov out: 148063244fa1SIlya Dryomov dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); 148163244fa1SIlya Dryomov return ct_res; 148263244fa1SIlya Dryomov } 148363244fa1SIlya Dryomov 1484f671b581SIlya Dryomov static void __enqueue_request(struct ceph_osd_request *req) 1485f671b581SIlya Dryomov { 1486f671b581SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 1487f671b581SIlya Dryomov 1488f671b581SIlya Dryomov dout("%s %p tid %llu to osd%d\n", __func__, req, req->r_tid, 1489f671b581SIlya Dryomov req->r_osd ? req->r_osd->o_osd : -1); 1490f671b581SIlya Dryomov 1491f671b581SIlya Dryomov if (req->r_osd) { 1492f671b581SIlya Dryomov __remove_osd_from_lru(req->r_osd); 1493f671b581SIlya Dryomov list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1494f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 1495f671b581SIlya Dryomov } else { 1496f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 1497f671b581SIlya Dryomov } 1498f671b581SIlya Dryomov } 1499f671b581SIlya Dryomov 150017a13e40SIlya Dryomov /* 15013d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 15023d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 150325985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 15046f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 15053d14c5d2SYehuda Sadeh * 15063d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 15073d14c5d2SYehuda Sadeh * 15083d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 15093d14c5d2SYehuda Sadeh */ 15106f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 151138d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 15123d14c5d2SYehuda Sadeh { 15135b191d99SSage Weil struct ceph_pg pgid; 15146f3bfd45SIlya Dryomov struct ceph_osds up, acting; 15153d14c5d2SYehuda Sadeh int err; 1516d29adb34SJosh Durgin bool was_paused; 15173d14c5d2SYehuda Sadeh 15186f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 151917a13e40SIlya Dryomov 152017a13e40SIlya Dryomov err = __calc_request_pg(osdc->osdmap, req, &pgid); 15216f6c7006SSage Weil if (err) { 15226f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 15233d14c5d2SYehuda Sadeh return err; 15246f6c7006SSage Weil } 15253d14c5d2SYehuda Sadeh req->r_pgid = pgid; 15263d14c5d2SYehuda Sadeh 15276f3bfd45SIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, &pgid, &up, &acting); 15283d14c5d2SYehuda Sadeh 1529d29adb34SJosh Durgin was_paused = req->r_paused; 1530d29adb34SJosh Durgin req->r_paused = __req_should_be_paused(osdc, req); 1531d29adb34SJosh Durgin if (was_paused && !req->r_paused) 1532d29adb34SJosh Durgin force_resend = 1; 1533d29adb34SJosh Durgin 153438d6453cSSage Weil if ((!force_resend && 15356f3bfd45SIlya Dryomov req->r_osd && req->r_osd->o_osd == acting.primary && 15363d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 15376f3bfd45SIlya Dryomov req->r_num_pg_osds == acting.size && 15386f3bfd45SIlya Dryomov memcmp(req->r_pg_osds, acting.osds, 15396f3bfd45SIlya Dryomov acting.size * sizeof(acting.osds[0])) == 0) || 15406f3bfd45SIlya Dryomov (req->r_osd == NULL && acting.primary == -1) || 1541d29adb34SJosh Durgin req->r_paused) 15423d14c5d2SYehuda Sadeh return 0; /* no change */ 15433d14c5d2SYehuda Sadeh 15445b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 15456f3bfd45SIlya Dryomov req->r_tid, pgid.pool, pgid.seed, acting.primary, 15463d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 15473d14c5d2SYehuda Sadeh 15483d14c5d2SYehuda Sadeh /* record full pg acting set */ 15496f3bfd45SIlya Dryomov memcpy(req->r_pg_osds, acting.osds, 15506f3bfd45SIlya Dryomov acting.size * sizeof(acting.osds[0])); 15516f3bfd45SIlya Dryomov req->r_num_pg_osds = acting.size; 15523d14c5d2SYehuda Sadeh 15533d14c5d2SYehuda Sadeh if (req->r_osd) { 15543d14c5d2SYehuda Sadeh __cancel_request(req); 15553d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1556a390de02SIlya Dryomov list_del_init(&req->r_linger_osd_item); 15573d14c5d2SYehuda Sadeh req->r_osd = NULL; 15583d14c5d2SYehuda Sadeh } 15593d14c5d2SYehuda Sadeh 15606f3bfd45SIlya Dryomov req->r_osd = lookup_osd(&osdc->osds, acting.primary); 15616f3bfd45SIlya Dryomov if (!req->r_osd && acting.primary >= 0) { 15623d14c5d2SYehuda Sadeh err = -ENOMEM; 15636f3bfd45SIlya Dryomov req->r_osd = create_osd(osdc, acting.primary); 15646f6c7006SSage Weil if (!req->r_osd) { 15656f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 15663d14c5d2SYehuda Sadeh goto out; 15676f6c7006SSage Weil } 15683d14c5d2SYehuda Sadeh 15696f3bfd45SIlya Dryomov dout("map_request osd %p is osd%d\n", req->r_osd, 15706f3bfd45SIlya Dryomov acting.primary); 1571fcd00b68SIlya Dryomov insert_osd(&osdc->osds, req->r_osd); 15723d14c5d2SYehuda Sadeh 1573b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 15746f3bfd45SIlya Dryomov CEPH_ENTITY_TYPE_OSD, acting.primary, 15756f3bfd45SIlya Dryomov &osdc->osdmap->osd_addr[acting.primary]); 15763d14c5d2SYehuda Sadeh } 15773d14c5d2SYehuda Sadeh 1578f671b581SIlya Dryomov __enqueue_request(req); 15793d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 15803d14c5d2SYehuda Sadeh 15813d14c5d2SYehuda Sadeh out: 15823d14c5d2SYehuda Sadeh return err; 15833d14c5d2SYehuda Sadeh } 15843d14c5d2SYehuda Sadeh 15853d14c5d2SYehuda Sadeh /* 15863d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 15873d14c5d2SYehuda Sadeh */ 158856e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 15893d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 15903d14c5d2SYehuda Sadeh { 15911b83bef2SSage Weil void *p; 15923d14c5d2SYehuda Sadeh 15931b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 15941b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 15951b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 15963d14c5d2SYehuda Sadeh 15971b83bef2SSage Weil /* fill in message content that changes each time we send it */ 15981b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 15991b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 1600205ee118SIlya Dryomov put_unaligned_le64(req->r_target_oloc.pool, req->r_request_pool); 16011b83bef2SSage Weil p = req->r_request_pgid; 16021b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 16031b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 16041b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 16051b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 16061b83bef2SSage Weil sizeof(req->r_reassert_version)); 16072169aea6SSage Weil 16083d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 16093d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 16103d14c5d2SYehuda Sadeh 16113d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 161226be8808SAlex Elder 16133d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 161426be8808SAlex Elder 161526be8808SAlex Elder ceph_con_send(&req->r_osd->o_con, req->r_request); 16163d14c5d2SYehuda Sadeh } 16173d14c5d2SYehuda Sadeh 16183d14c5d2SYehuda Sadeh /* 16196f6c7006SSage Weil * Send any requests in the queue (req_unsent). 16206f6c7006SSage Weil */ 1621f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 16226f6c7006SSage Weil { 16236f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 16246f6c7006SSage Weil 1625f9d25199SAlex Elder dout("__send_queued\n"); 1626f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 16276f6c7006SSage Weil __send_request(osdc, req); 16286f6c7006SSage Weil } 16296f6c7006SSage Weil 16306f6c7006SSage Weil /* 16310bbfdfe8SIlya Dryomov * Caller should hold map_sem for read and request_mutex. 16320bbfdfe8SIlya Dryomov */ 16330bbfdfe8SIlya Dryomov static int __ceph_osdc_start_request(struct ceph_osd_client *osdc, 16340bbfdfe8SIlya Dryomov struct ceph_osd_request *req, 16350bbfdfe8SIlya Dryomov bool nofail) 16360bbfdfe8SIlya Dryomov { 16370bbfdfe8SIlya Dryomov int rc; 16380bbfdfe8SIlya Dryomov 16390bbfdfe8SIlya Dryomov __register_request(osdc, req); 16400bbfdfe8SIlya Dryomov req->r_sent = 0; 16410bbfdfe8SIlya Dryomov req->r_got_reply = 0; 16420bbfdfe8SIlya Dryomov rc = __map_request(osdc, req, 0); 16430bbfdfe8SIlya Dryomov if (rc < 0) { 16440bbfdfe8SIlya Dryomov if (nofail) { 16450bbfdfe8SIlya Dryomov dout("osdc_start_request failed map, " 16460bbfdfe8SIlya Dryomov " will retry %lld\n", req->r_tid); 16470bbfdfe8SIlya Dryomov rc = 0; 16480bbfdfe8SIlya Dryomov } else { 16490bbfdfe8SIlya Dryomov __unregister_request(osdc, req); 16500bbfdfe8SIlya Dryomov } 16510bbfdfe8SIlya Dryomov return rc; 16520bbfdfe8SIlya Dryomov } 16530bbfdfe8SIlya Dryomov 16540bbfdfe8SIlya Dryomov if (req->r_osd == NULL) { 16550bbfdfe8SIlya Dryomov dout("send_request %p no up osds in pg\n", req); 16560bbfdfe8SIlya Dryomov ceph_monc_request_next_osdmap(&osdc->client->monc); 16570bbfdfe8SIlya Dryomov } else { 16580bbfdfe8SIlya Dryomov __send_queued(osdc); 16590bbfdfe8SIlya Dryomov } 16600bbfdfe8SIlya Dryomov 16610bbfdfe8SIlya Dryomov return 0; 16620bbfdfe8SIlya Dryomov } 16630bbfdfe8SIlya Dryomov 16640bbfdfe8SIlya Dryomov /* 16653d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 16663d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 16673d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 16683d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 16693d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 16703d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 16713d14c5d2SYehuda Sadeh * there are no open requests). 16723d14c5d2SYehuda Sadeh */ 16733d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 16743d14c5d2SYehuda Sadeh { 16753d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 16763d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 1677a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 167883aff95eSSage Weil struct ceph_osd_request *req; 16793d14c5d2SYehuda Sadeh struct ceph_osd *osd; 16803d14c5d2SYehuda Sadeh struct list_head slow_osds; 16813d14c5d2SYehuda Sadeh dout("timeout\n"); 16823d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 16833d14c5d2SYehuda Sadeh 16843d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 16853d14c5d2SYehuda Sadeh 16863d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 16873d14c5d2SYehuda Sadeh 16883d14c5d2SYehuda Sadeh /* 16893d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 16903d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 16913d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 16923d14c5d2SYehuda Sadeh */ 16933d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 16943d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 1695a319bf56SIlya Dryomov if (time_before(jiffies, 1696a319bf56SIlya Dryomov req->r_stamp + opts->osd_keepalive_timeout)) 16973d14c5d2SYehuda Sadeh break; 16983d14c5d2SYehuda Sadeh 16993d14c5d2SYehuda Sadeh osd = req->r_osd; 17003d14c5d2SYehuda Sadeh BUG_ON(!osd); 17013d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 17023d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 17033d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 17043d14c5d2SYehuda Sadeh } 17053d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 17063d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 17073d14c5d2SYehuda Sadeh o_keepalive_item); 17083d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 17093d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 17103d14c5d2SYehuda Sadeh } 17113d14c5d2SYehuda Sadeh 17123d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1713f9d25199SAlex Elder __send_queued(osdc); 17143d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 17153d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 17163d14c5d2SYehuda Sadeh } 17173d14c5d2SYehuda Sadeh 17183d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 17193d14c5d2SYehuda Sadeh { 17203d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 17213d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 17223d14c5d2SYehuda Sadeh osds_timeout_work.work); 1723a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 172442a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 17253d14c5d2SYehuda Sadeh 172642a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 17273d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 172842a2c09fSIlya Dryomov mutex_lock(&osdc->request_mutex); 17293d14c5d2SYehuda Sadeh 173042a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 173142a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 173242a2c09fSIlya Dryomov break; 173342a2c09fSIlya Dryomov 173442a2c09fSIlya Dryomov remove_osd(osdc, osd); 173542a2c09fSIlya Dryomov } 173642a2c09fSIlya Dryomov 173742a2c09fSIlya Dryomov mutex_unlock(&osdc->request_mutex); 173842a2c09fSIlya Dryomov up_read(&osdc->map_sem); 17393d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 17403d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 17413d14c5d2SYehuda Sadeh } 17423d14c5d2SYehuda Sadeh 1743205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 1744205ee118SIlya Dryomov struct ceph_object_locator *oloc) 1745205ee118SIlya Dryomov { 1746205ee118SIlya Dryomov u8 struct_v, struct_cv; 1747205ee118SIlya Dryomov u32 len; 1748205ee118SIlya Dryomov void *struct_end; 1749205ee118SIlya Dryomov int ret = 0; 1750205ee118SIlya Dryomov 1751205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1752205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1753205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1754205ee118SIlya Dryomov if (struct_v < 3) { 1755205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 1756205ee118SIlya Dryomov struct_v, struct_cv); 1757205ee118SIlya Dryomov goto e_inval; 1758205ee118SIlya Dryomov } 1759205ee118SIlya Dryomov if (struct_cv > 6) { 1760205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 1761205ee118SIlya Dryomov struct_v, struct_cv); 1762205ee118SIlya Dryomov goto e_inval; 1763205ee118SIlya Dryomov } 1764205ee118SIlya Dryomov len = ceph_decode_32(p); 1765205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1766205ee118SIlya Dryomov struct_end = *p + len; 1767205ee118SIlya Dryomov 1768205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 1769205ee118SIlya Dryomov *p += 4; /* skip preferred */ 1770205ee118SIlya Dryomov 1771205ee118SIlya Dryomov len = ceph_decode_32(p); 1772205ee118SIlya Dryomov if (len > 0) { 1773205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 1774205ee118SIlya Dryomov goto e_inval; 1775205ee118SIlya Dryomov } 1776205ee118SIlya Dryomov 1777205ee118SIlya Dryomov if (struct_v >= 5) { 1778205ee118SIlya Dryomov len = ceph_decode_32(p); 1779205ee118SIlya Dryomov if (len > 0) { 1780205ee118SIlya Dryomov pr_warn("ceph_object_locator::nspace is set\n"); 1781205ee118SIlya Dryomov goto e_inval; 1782205ee118SIlya Dryomov } 1783205ee118SIlya Dryomov } 1784205ee118SIlya Dryomov 1785205ee118SIlya Dryomov if (struct_v >= 6) { 1786205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 1787205ee118SIlya Dryomov if (hash != -1) { 1788205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 1789205ee118SIlya Dryomov goto e_inval; 1790205ee118SIlya Dryomov } 1791205ee118SIlya Dryomov } 1792205ee118SIlya Dryomov 1793205ee118SIlya Dryomov /* skip the rest */ 1794205ee118SIlya Dryomov *p = struct_end; 1795205ee118SIlya Dryomov out: 1796205ee118SIlya Dryomov return ret; 1797205ee118SIlya Dryomov 1798205ee118SIlya Dryomov e_inval: 1799205ee118SIlya Dryomov ret = -EINVAL; 1800205ee118SIlya Dryomov goto out; 1801205ee118SIlya Dryomov } 1802205ee118SIlya Dryomov 1803205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 1804205ee118SIlya Dryomov struct ceph_request_redirect *redir) 1805205ee118SIlya Dryomov { 1806205ee118SIlya Dryomov u8 struct_v, struct_cv; 1807205ee118SIlya Dryomov u32 len; 1808205ee118SIlya Dryomov void *struct_end; 1809205ee118SIlya Dryomov int ret; 1810205ee118SIlya Dryomov 1811205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1812205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1813205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1814205ee118SIlya Dryomov if (struct_cv > 1) { 1815205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 1816205ee118SIlya Dryomov struct_v, struct_cv); 1817205ee118SIlya Dryomov goto e_inval; 1818205ee118SIlya Dryomov } 1819205ee118SIlya Dryomov len = ceph_decode_32(p); 1820205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1821205ee118SIlya Dryomov struct_end = *p + len; 1822205ee118SIlya Dryomov 1823205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 1824205ee118SIlya Dryomov if (ret) 1825205ee118SIlya Dryomov goto out; 1826205ee118SIlya Dryomov 1827205ee118SIlya Dryomov len = ceph_decode_32(p); 1828205ee118SIlya Dryomov if (len > 0) { 1829205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 1830205ee118SIlya Dryomov goto e_inval; 1831205ee118SIlya Dryomov } 1832205ee118SIlya Dryomov 1833205ee118SIlya Dryomov len = ceph_decode_32(p); 1834205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 1835205ee118SIlya Dryomov 1836205ee118SIlya Dryomov /* skip the rest */ 1837205ee118SIlya Dryomov *p = struct_end; 1838205ee118SIlya Dryomov out: 1839205ee118SIlya Dryomov return ret; 1840205ee118SIlya Dryomov 1841205ee118SIlya Dryomov e_inval: 1842205ee118SIlya Dryomov ret = -EINVAL; 1843205ee118SIlya Dryomov goto out; 1844205ee118SIlya Dryomov } 1845205ee118SIlya Dryomov 184625845472SSage Weil static void complete_request(struct ceph_osd_request *req) 184725845472SSage Weil { 184825845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 184925845472SSage Weil } 185025845472SSage Weil 18513d14c5d2SYehuda Sadeh /* 18523d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 18533d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 18543d14c5d2SYehuda Sadeh */ 185570cf052dSShraddha Barke static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg) 18563d14c5d2SYehuda Sadeh { 18571b83bef2SSage Weil void *p, *end; 18583d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1859205ee118SIlya Dryomov struct ceph_request_redirect redir; 18603d14c5d2SYehuda Sadeh u64 tid; 18611b83bef2SSage Weil int object_len; 186279528734SAlex Elder unsigned int numops; 186379528734SAlex Elder int payload_len, flags; 18643d14c5d2SYehuda Sadeh s32 result; 18651b83bef2SSage Weil s32 retry_attempt; 18661b83bef2SSage Weil struct ceph_pg pg; 18671b83bef2SSage Weil int err; 18681b83bef2SSage Weil u32 reassert_epoch; 18691b83bef2SSage Weil u64 reassert_version; 18701b83bef2SSage Weil u32 osdmap_epoch; 18710d5af164SAlex Elder int already_completed; 18729fc6e064SAlex Elder u32 bytes; 1873b0b31a8fSIlya Dryomov u8 decode_redir; 187479528734SAlex Elder unsigned int i; 18753d14c5d2SYehuda Sadeh 18763d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 18771b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 18781b83bef2SSage Weil 18791b83bef2SSage Weil p = msg->front.iov_base; 18801b83bef2SSage Weil end = p + msg->front.iov_len; 18811b83bef2SSage Weil 18821b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 18831b83bef2SSage Weil object_len = ceph_decode_32(&p); 18841b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 18851b83bef2SSage Weil p += object_len; 18861b83bef2SSage Weil 1887ef4859d6SAlex Elder err = ceph_decode_pgid(&p, end, &pg); 18881b83bef2SSage Weil if (err) 18893d14c5d2SYehuda Sadeh goto bad; 18901b83bef2SSage Weil 18911b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 18921b83bef2SSage Weil flags = ceph_decode_64(&p); 18931b83bef2SSage Weil result = ceph_decode_32(&p); 18941b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 18951b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 18961b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 18971b83bef2SSage Weil 18983d14c5d2SYehuda Sadeh /* lookup */ 1899ff513aceSIlya Dryomov down_read(&osdc->map_sem); 19003d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1901fcd00b68SIlya Dryomov req = lookup_request(&osdc->requests, tid); 19023d14c5d2SYehuda Sadeh if (req == NULL) { 19033d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 19048058fd45SAlex Elder goto bad_mutex; 19053d14c5d2SYehuda Sadeh } 19063d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 19071b83bef2SSage Weil 19081b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 19091b83bef2SSage Weil req, result); 19101b83bef2SSage Weil 191118741196SDan Carpenter ceph_decode_need(&p, end, 4, bad_put); 19121b83bef2SSage Weil numops = ceph_decode_32(&p); 19133f1af42aSIlya Dryomov if (numops > CEPH_OSD_MAX_OPS) 19141b83bef2SSage Weil goto bad_put; 19151b83bef2SSage Weil if (numops != req->r_num_ops) 19161b83bef2SSage Weil goto bad_put; 19171b83bef2SSage Weil payload_len = 0; 191818741196SDan Carpenter ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put); 19191b83bef2SSage Weil for (i = 0; i < numops; i++) { 19201b83bef2SSage Weil struct ceph_osd_op *op = p; 19211b83bef2SSage Weil int len; 19221b83bef2SSage Weil 19231b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 19247665d85bSYan, Zheng req->r_ops[i].outdata_len = len; 19251b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 19261b83bef2SSage Weil payload_len += len; 19271b83bef2SSage Weil p += sizeof(*op); 19281b83bef2SSage Weil } 19299fc6e064SAlex Elder bytes = le32_to_cpu(msg->hdr.data_len); 19309fc6e064SAlex Elder if (payload_len != bytes) { 1931b9a67899SJoe Perches pr_warn("sum of op payload lens %d != data_len %d\n", 19329fc6e064SAlex Elder payload_len, bytes); 19331b83bef2SSage Weil goto bad_put; 19341b83bef2SSage Weil } 19351b83bef2SSage Weil 193618741196SDan Carpenter ceph_decode_need(&p, end, 4 + numops * 4, bad_put); 19371b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 19381b83bef2SSage Weil for (i = 0; i < numops; i++) 19397665d85bSYan, Zheng req->r_ops[i].rval = ceph_decode_32(&p); 19403d14c5d2SYehuda Sadeh 1941205ee118SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 6) { 1942205ee118SIlya Dryomov p += 8 + 4; /* skip replay_version */ 1943205ee118SIlya Dryomov p += 8; /* skip user_version */ 1944205ee118SIlya Dryomov 1945b0b31a8fSIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 7) 1946b0b31a8fSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, bad_put); 1947b0b31a8fSIlya Dryomov else 1948b0b31a8fSIlya Dryomov decode_redir = 1; 1949b0b31a8fSIlya Dryomov } else { 1950b0b31a8fSIlya Dryomov decode_redir = 0; 1951b0b31a8fSIlya Dryomov } 1952b0b31a8fSIlya Dryomov 1953b0b31a8fSIlya Dryomov if (decode_redir) { 1954205ee118SIlya Dryomov err = ceph_redirect_decode(&p, end, &redir); 1955205ee118SIlya Dryomov if (err) 1956205ee118SIlya Dryomov goto bad_put; 1957205ee118SIlya Dryomov } else { 1958205ee118SIlya Dryomov redir.oloc.pool = -1; 1959205ee118SIlya Dryomov } 1960205ee118SIlya Dryomov 196163244fa1SIlya Dryomov if (!ceph_oloc_empty(&redir.oloc)) { 1962205ee118SIlya Dryomov dout("redirect pool %lld\n", redir.oloc.pool); 1963205ee118SIlya Dryomov 1964205ee118SIlya Dryomov __unregister_request(osdc, req); 1965205ee118SIlya Dryomov 196663244fa1SIlya Dryomov ceph_oloc_copy(&req->r_target_oloc, &redir.oloc); 1967205ee118SIlya Dryomov 1968205ee118SIlya Dryomov /* 1969205ee118SIlya Dryomov * Start redirect requests with nofail=true. If 1970205ee118SIlya Dryomov * mapping fails, request will end up on the notarget 1971205ee118SIlya Dryomov * list, waiting for the new osdmap (which can take 1972205ee118SIlya Dryomov * a while), even though the original request mapped 1973205ee118SIlya Dryomov * successfully. In the future we might want to follow 1974205ee118SIlya Dryomov * original request's nofail setting here. 1975205ee118SIlya Dryomov */ 1976ff513aceSIlya Dryomov err = __ceph_osdc_start_request(osdc, req, true); 1977205ee118SIlya Dryomov BUG_ON(err); 1978205ee118SIlya Dryomov 1979ff513aceSIlya Dryomov goto out_unlock; 1980205ee118SIlya Dryomov } 1981205ee118SIlya Dryomov 1982eb845ff1SYan, Zheng already_completed = req->r_got_reply; 19833d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 19841b83bef2SSage Weil req->r_result = result; 19853d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 19863d14c5d2SYehuda Sadeh bytes); 19873d14c5d2SYehuda Sadeh if (req->r_result == 0) 19883d14c5d2SYehuda Sadeh req->r_result = bytes; 19893d14c5d2SYehuda Sadeh 19903d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 19911b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 19921b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 19933d14c5d2SYehuda Sadeh 19943d14c5d2SYehuda Sadeh req->r_got_reply = 1; 19953d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 19963d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 1997ff513aceSIlya Dryomov goto out_unlock; 19983d14c5d2SYehuda Sadeh } 19993d14c5d2SYehuda Sadeh 20003d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 20013d14c5d2SYehuda Sadeh 2002a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 2003a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 2004a40c4f10SYehuda Sadeh 20053d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 20063d14c5d2SYehuda Sadeh if (result < 0 || 20073d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 20083d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 20093d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 20103d14c5d2SYehuda Sadeh 20113d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 2012ff513aceSIlya Dryomov up_read(&osdc->map_sem); 20133d14c5d2SYehuda Sadeh 2014eb845ff1SYan, Zheng if (!already_completed) { 201561c5d6bfSYan, Zheng if (req->r_unsafe_callback && 201661c5d6bfSYan, Zheng result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK)) 201761c5d6bfSYan, Zheng req->r_unsafe_callback(req, true); 20183d14c5d2SYehuda Sadeh if (req->r_callback) 20193d14c5d2SYehuda Sadeh req->r_callback(req, msg); 20203d14c5d2SYehuda Sadeh else 20213d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 2022eb845ff1SYan, Zheng } 20233d14c5d2SYehuda Sadeh 202461c5d6bfSYan, Zheng if (flags & CEPH_OSD_FLAG_ONDISK) { 202561c5d6bfSYan, Zheng if (req->r_unsafe_callback && already_completed) 202661c5d6bfSYan, Zheng req->r_unsafe_callback(req, false); 202725845472SSage Weil complete_request(req); 202861c5d6bfSYan, Zheng } 20293d14c5d2SYehuda Sadeh 2030ff513aceSIlya Dryomov out: 2031a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 20323d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 20333d14c5d2SYehuda Sadeh return; 2034ff513aceSIlya Dryomov out_unlock: 2035ff513aceSIlya Dryomov mutex_unlock(&osdc->request_mutex); 2036ff513aceSIlya Dryomov up_read(&osdc->map_sem); 2037ff513aceSIlya Dryomov goto out; 20383d14c5d2SYehuda Sadeh 20391b83bef2SSage Weil bad_put: 204037c89bdeSLi Wang req->r_result = -EIO; 204137c89bdeSLi Wang __unregister_request(osdc, req); 204237c89bdeSLi Wang if (req->r_callback) 204337c89bdeSLi Wang req->r_callback(req, msg); 204437c89bdeSLi Wang else 204537c89bdeSLi Wang complete_all(&req->r_completion); 204637c89bdeSLi Wang complete_request(req); 20471b83bef2SSage Weil ceph_osdc_put_request(req); 20488058fd45SAlex Elder bad_mutex: 20498058fd45SAlex Elder mutex_unlock(&osdc->request_mutex); 2050ff513aceSIlya Dryomov up_read(&osdc->map_sem); 20513d14c5d2SYehuda Sadeh bad: 20521b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 20531b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 20543d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 20553d14c5d2SYehuda Sadeh } 20563d14c5d2SYehuda Sadeh 20576f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 20583d14c5d2SYehuda Sadeh { 20593d14c5d2SYehuda Sadeh struct rb_node *p, *n; 20603d14c5d2SYehuda Sadeh 20617eb71e03SIlya Dryomov dout("%s %p\n", __func__, osdc); 20623d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 20636f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 20643d14c5d2SYehuda Sadeh 20653d14c5d2SYehuda Sadeh n = rb_next(p); 20663d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 20673d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 20683d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 20693d14c5d2SYehuda Sadeh osd->o_osd), 20703d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 20713d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 20723d14c5d2SYehuda Sadeh } 20733d14c5d2SYehuda Sadeh } 20743d14c5d2SYehuda Sadeh 20753d14c5d2SYehuda Sadeh /* 20766f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 20776f6c7006SSage Weil * no osd, request a new map. 20783d14c5d2SYehuda Sadeh * 2079e6d50f67SAlex Elder * Caller should hold map_sem for read. 20803d14c5d2SYehuda Sadeh */ 20819a1ea2dbSJosh Durgin static void kick_requests(struct ceph_osd_client *osdc, bool force_resend, 20829a1ea2dbSJosh Durgin bool force_resend_writes) 20833d14c5d2SYehuda Sadeh { 2084a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 20856f6c7006SSage Weil struct rb_node *p; 20866f6c7006SSage Weil int needmap = 0; 20876f6c7006SSage Weil int err; 20889a1ea2dbSJosh Durgin bool force_resend_req; 20893d14c5d2SYehuda Sadeh 20909a1ea2dbSJosh Durgin dout("kick_requests %s %s\n", force_resend ? " (force resend)" : "", 20919a1ea2dbSJosh Durgin force_resend_writes ? " (force resend writes)" : ""); 20923d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 20936194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 20946f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 20956194ea89SSage Weil p = rb_next(p); 2096ab60b16dSAlex Elder 2097ab60b16dSAlex Elder /* 2098ab60b16dSAlex Elder * For linger requests that have not yet been 2099ab60b16dSAlex Elder * registered, move them to the linger list; they'll 2100ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 2101ab60b16dSAlex Elder * the request before re-registering it as a linger 2102ab60b16dSAlex Elder * request to ensure the __map_request() below 2103ab60b16dSAlex Elder * will decide it needs to be sent. 2104ab60b16dSAlex Elder */ 2105ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 2106ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 2107ab60b16dSAlex Elder req, req->r_tid, 2108ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 210996e4dac6SAlex Elder ceph_osdc_get_request(req); 2110ab60b16dSAlex Elder __unregister_request(osdc, req); 2111ab60b16dSAlex Elder __register_linger_request(osdc, req); 211296e4dac6SAlex Elder ceph_osdc_put_request(req); 2113ab60b16dSAlex Elder continue; 2114ab60b16dSAlex Elder } 2115ab60b16dSAlex Elder 21169a1ea2dbSJosh Durgin force_resend_req = force_resend || 21179a1ea2dbSJosh Durgin (force_resend_writes && 21189a1ea2dbSJosh Durgin req->r_flags & CEPH_OSD_FLAG_WRITE); 21199a1ea2dbSJosh Durgin err = __map_request(osdc, req, force_resend_req); 21206f6c7006SSage Weil if (err < 0) 21216f6c7006SSage Weil continue; /* error */ 21226f6c7006SSage Weil if (req->r_osd == NULL) { 21236f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 21246f6c7006SSage Weil needmap++; /* request a newer map */ 21256f6c7006SSage Weil } else if (err > 0) { 21266194ea89SSage Weil if (!req->r_linger) { 21276194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 21286194ea89SSage Weil req->r_tid, 21296f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 21306f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 21316f6c7006SSage Weil } 21326f6c7006SSage Weil } 21336194ea89SSage Weil } 2134a40c4f10SYehuda Sadeh 2135a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 2136a40c4f10SYehuda Sadeh r_linger_item) { 2137a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 2138a40c4f10SYehuda Sadeh 21399a1ea2dbSJosh Durgin err = __map_request(osdc, req, 21409a1ea2dbSJosh Durgin force_resend || force_resend_writes); 2141ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 2142a40c4f10SYehuda Sadeh if (err < 0) 2143a40c4f10SYehuda Sadeh continue; /* hrm! */ 2144b0494532SIlya Dryomov if (req->r_osd == NULL || err > 0) { 2145a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 2146b0494532SIlya Dryomov dout("lingering %p tid %llu maps to no osd\n", 2147b0494532SIlya Dryomov req, req->r_tid); 2148b0494532SIlya Dryomov /* 2149b0494532SIlya Dryomov * A homeless lingering request makes 2150b0494532SIlya Dryomov * no sense, as it's job is to keep 2151b0494532SIlya Dryomov * a particular OSD connection open. 2152b0494532SIlya Dryomov * Request a newer map and kick the 2153b0494532SIlya Dryomov * request, knowing that it won't be 2154b0494532SIlya Dryomov * resent until we actually get a map 2155b0494532SIlya Dryomov * that can tell us where to send it. 2156b0494532SIlya Dryomov */ 2157b0494532SIlya Dryomov needmap++; 2158a40c4f10SYehuda Sadeh } 2159a40c4f10SYehuda Sadeh 2160b0494532SIlya Dryomov dout("kicking lingering %p tid %llu osd%d\n", req, 2161b0494532SIlya Dryomov req->r_tid, req->r_osd ? req->r_osd->o_osd : -1); 2162a40c4f10SYehuda Sadeh __register_request(osdc, req); 2163c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 2164a40c4f10SYehuda Sadeh } 2165b0494532SIlya Dryomov } 216614d2f38dSAlex Elder reset_changed_osds(osdc); 21673d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 21683d14c5d2SYehuda Sadeh 21693d14c5d2SYehuda Sadeh if (needmap) { 21703d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 21713d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 21723d14c5d2SYehuda Sadeh } 21733d14c5d2SYehuda Sadeh } 21746f6c7006SSage Weil 21756f6c7006SSage Weil 21763d14c5d2SYehuda Sadeh /* 21773d14c5d2SYehuda Sadeh * Process updated osd map. 21783d14c5d2SYehuda Sadeh * 21793d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 21803d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 21813d14c5d2SYehuda Sadeh * off to different OSDs as needed. 21823d14c5d2SYehuda Sadeh */ 21833d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 21843d14c5d2SYehuda Sadeh { 21853d14c5d2SYehuda Sadeh void *p, *end, *next; 21863d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 21873d14c5d2SYehuda Sadeh u32 epoch; 21883d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 21893d14c5d2SYehuda Sadeh int err; 21903d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 21919a1ea2dbSJosh Durgin bool was_full; 21923d14c5d2SYehuda Sadeh 21933d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 21943d14c5d2SYehuda Sadeh p = msg->front.iov_base; 21953d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 21963d14c5d2SYehuda Sadeh 21973d14c5d2SYehuda Sadeh /* verify fsid */ 21983d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 21993d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 22003d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 22013d14c5d2SYehuda Sadeh return; 22023d14c5d2SYehuda Sadeh 22033d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 22043d14c5d2SYehuda Sadeh 22059a1ea2dbSJosh Durgin was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 22069a1ea2dbSJosh Durgin 22073d14c5d2SYehuda Sadeh /* incremental maps */ 22083d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 22093d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 22103d14c5d2SYehuda Sadeh while (nr_maps > 0) { 22113d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 22123d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 22133d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 22143d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 22153d14c5d2SYehuda Sadeh next = p + maplen; 22163d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 22173d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 22183d14c5d2SYehuda Sadeh epoch, maplen); 22193d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 22200c0a8de1SIlya Dryomov osdc->osdmap); 22213d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 22223d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 22233d14c5d2SYehuda Sadeh goto bad; 22243d14c5d2SYehuda Sadeh } 22253d14c5d2SYehuda Sadeh BUG_ON(!newmap); 22263d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 22273d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 22283d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 22293d14c5d2SYehuda Sadeh } 22309a1ea2dbSJosh Durgin was_full = was_full || 22319a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 22329a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 22339a1ea2dbSJosh Durgin kick_requests(osdc, 0, was_full); 22343d14c5d2SYehuda Sadeh } else { 22353d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 22363d14c5d2SYehuda Sadeh epoch, maplen); 22373d14c5d2SYehuda Sadeh } 22383d14c5d2SYehuda Sadeh p = next; 22393d14c5d2SYehuda Sadeh nr_maps--; 22403d14c5d2SYehuda Sadeh } 22413d14c5d2SYehuda Sadeh if (newmap) 22423d14c5d2SYehuda Sadeh goto done; 22433d14c5d2SYehuda Sadeh 22443d14c5d2SYehuda Sadeh /* full maps */ 22453d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 22463d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 22473d14c5d2SYehuda Sadeh while (nr_maps) { 22483d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 22493d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 22503d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 22513d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 22523d14c5d2SYehuda Sadeh if (nr_maps > 1) { 22533d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 22543d14c5d2SYehuda Sadeh epoch, maplen); 22553d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 22563d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 22573d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 22583d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 22593d14c5d2SYehuda Sadeh } else { 226038d6453cSSage Weil int skipped_map = 0; 226138d6453cSSage Weil 22623d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 2263a2505d63SIlya Dryomov newmap = ceph_osdmap_decode(&p, p+maplen); 22643d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 22653d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 22663d14c5d2SYehuda Sadeh goto bad; 22673d14c5d2SYehuda Sadeh } 22683d14c5d2SYehuda Sadeh BUG_ON(!newmap); 22693d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 22703d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 227138d6453cSSage Weil if (oldmap) { 227238d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 227338d6453cSSage Weil skipped_map = 1; 22743d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 227538d6453cSSage Weil } 22769a1ea2dbSJosh Durgin was_full = was_full || 22779a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 22789a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 22799a1ea2dbSJosh Durgin kick_requests(osdc, skipped_map, was_full); 22803d14c5d2SYehuda Sadeh } 22813d14c5d2SYehuda Sadeh p += maplen; 22823d14c5d2SYehuda Sadeh nr_maps--; 22833d14c5d2SYehuda Sadeh } 22843d14c5d2SYehuda Sadeh 2285b72e19b9SDan Carpenter if (!osdc->osdmap) 2286b72e19b9SDan Carpenter goto bad; 22873d14c5d2SYehuda Sadeh done: 22883d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 228982dcabadSIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 229082dcabadSIlya Dryomov osdc->osdmap->epoch); 2291cd634fb6SSage Weil 2292cd634fb6SSage Weil /* 2293cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 2294cd634fb6SSage Weil * we find out when we are no longer full and stop returning 2295cd634fb6SSage Weil * ENOSPC. 2296cd634fb6SSage Weil */ 2297d29adb34SJosh Durgin if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 2298d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || 2299d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) 2300cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 2301cd634fb6SSage Weil 2302f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 2303f9d25199SAlex Elder __send_queued(osdc); 2304f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 23053d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 23063d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 23073d14c5d2SYehuda Sadeh return; 23083d14c5d2SYehuda Sadeh 23093d14c5d2SYehuda Sadeh bad: 23103d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 23113d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 23123d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 23133d14c5d2SYehuda Sadeh } 23143d14c5d2SYehuda Sadeh 23153d14c5d2SYehuda Sadeh /* 2316a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 2317a40c4f10SYehuda Sadeh * 2318a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 2319a40c4f10SYehuda Sadeh */ 2320a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 2321a40c4f10SYehuda Sadeh { 2322a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 2323a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 2324a40c4f10SYehuda Sadeh 2325a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 2326a40c4f10SYehuda Sadeh kfree(event); 2327a40c4f10SYehuda Sadeh } 2328a40c4f10SYehuda Sadeh 2329a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 2330a40c4f10SYehuda Sadeh { 2331a40c4f10SYehuda Sadeh kref_get(&event->kref); 2332a40c4f10SYehuda Sadeh } 2333a40c4f10SYehuda Sadeh 2334a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 2335a40c4f10SYehuda Sadeh { 2336a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 2337a40c4f10SYehuda Sadeh } 2338a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 2339a40c4f10SYehuda Sadeh 2340a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 2341a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 2342a40c4f10SYehuda Sadeh { 2343a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2344a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2345a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2346a40c4f10SYehuda Sadeh 2347a40c4f10SYehuda Sadeh while (*p) { 2348a40c4f10SYehuda Sadeh parent = *p; 2349a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2350a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 2351a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2352a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 2353a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2354a40c4f10SYehuda Sadeh else 2355a40c4f10SYehuda Sadeh BUG(); 2356a40c4f10SYehuda Sadeh } 2357a40c4f10SYehuda Sadeh 2358a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 2359a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 2360a40c4f10SYehuda Sadeh } 2361a40c4f10SYehuda Sadeh 2362a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 2363a40c4f10SYehuda Sadeh u64 cookie) 2364a40c4f10SYehuda Sadeh { 2365a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2366a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2367a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2368a40c4f10SYehuda Sadeh 2369a40c4f10SYehuda Sadeh while (*p) { 2370a40c4f10SYehuda Sadeh parent = *p; 2371a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2372a40c4f10SYehuda Sadeh if (cookie < event->cookie) 2373a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2374a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 2375a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2376a40c4f10SYehuda Sadeh else 2377a40c4f10SYehuda Sadeh return event; 2378a40c4f10SYehuda Sadeh } 2379a40c4f10SYehuda Sadeh return NULL; 2380a40c4f10SYehuda Sadeh } 2381a40c4f10SYehuda Sadeh 2382a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 2383a40c4f10SYehuda Sadeh { 2384a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2385a40c4f10SYehuda Sadeh 2386a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 2387a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 2388a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 2389a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2390a40c4f10SYehuda Sadeh } else { 2391a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 2392a40c4f10SYehuda Sadeh } 2393a40c4f10SYehuda Sadeh } 2394a40c4f10SYehuda Sadeh 2395a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 2396a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 23973c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 2398a40c4f10SYehuda Sadeh { 2399a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2400a40c4f10SYehuda Sadeh 2401a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 2402a40c4f10SYehuda Sadeh if (!event) 2403a40c4f10SYehuda Sadeh return -ENOMEM; 2404a40c4f10SYehuda Sadeh 2405a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 2406a40c4f10SYehuda Sadeh event->cb = event_cb; 24073c663bbdSAlex Elder event->one_shot = 0; 2408a40c4f10SYehuda Sadeh event->data = data; 2409a40c4f10SYehuda Sadeh event->osdc = osdc; 2410a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 24113ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 2412a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 2413a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 2414a40c4f10SYehuda Sadeh 2415a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2416a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 2417a40c4f10SYehuda Sadeh __insert_event(osdc, event); 2418a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2419a40c4f10SYehuda Sadeh 2420a40c4f10SYehuda Sadeh *pevent = event; 2421a40c4f10SYehuda Sadeh return 0; 2422a40c4f10SYehuda Sadeh } 2423a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 2424a40c4f10SYehuda Sadeh 2425a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 2426a40c4f10SYehuda Sadeh { 2427a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2428a40c4f10SYehuda Sadeh 2429a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 2430a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2431a40c4f10SYehuda Sadeh __remove_event(event); 2432a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2433a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 2434a40c4f10SYehuda Sadeh } 2435a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 2436a40c4f10SYehuda Sadeh 2437a40c4f10SYehuda Sadeh 2438a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 2439a40c4f10SYehuda Sadeh { 2440a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 2441a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 2442a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 2443a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 2444a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 2445a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 2446a40c4f10SYehuda Sadeh 2447a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 2448a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 2449a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 2450a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2451a40c4f10SYehuda Sadeh kfree(event_work); 2452a40c4f10SYehuda Sadeh } 2453a40c4f10SYehuda Sadeh 2454a40c4f10SYehuda Sadeh 2455a40c4f10SYehuda Sadeh /* 2456a40c4f10SYehuda Sadeh * Process osd watch notifications 2457a40c4f10SYehuda Sadeh */ 24583c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 24593c663bbdSAlex Elder struct ceph_msg *msg) 2460a40c4f10SYehuda Sadeh { 2461a40c4f10SYehuda Sadeh void *p, *end; 2462a40c4f10SYehuda Sadeh u8 proto_ver; 2463a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 2464a40c4f10SYehuda Sadeh u8 opcode; 2465a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2466a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 2467a40c4f10SYehuda Sadeh 2468a40c4f10SYehuda Sadeh p = msg->front.iov_base; 2469a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 2470a40c4f10SYehuda Sadeh 2471a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 2472a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 2473a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 2474a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 2475a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 2476a40c4f10SYehuda Sadeh 2477a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2478a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 2479a40c4f10SYehuda Sadeh if (event) { 24803c663bbdSAlex Elder BUG_ON(event->one_shot); 2481a40c4f10SYehuda Sadeh get_event(event); 2482a40c4f10SYehuda Sadeh } 2483a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2484a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 2485a40c4f10SYehuda Sadeh cookie, ver, event); 2486a40c4f10SYehuda Sadeh if (event) { 2487a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 2488a40c4f10SYehuda Sadeh if (!event_work) { 248991883cd2SIlya Dryomov pr_err("couldn't allocate event_work\n"); 249091883cd2SIlya Dryomov ceph_osdc_put_event(event); 249191883cd2SIlya Dryomov return; 2492a40c4f10SYehuda Sadeh } 24936b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 2494a40c4f10SYehuda Sadeh event_work->event = event; 2495a40c4f10SYehuda Sadeh event_work->ver = ver; 2496a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 2497a40c4f10SYehuda Sadeh event_work->opcode = opcode; 249891883cd2SIlya Dryomov 249991883cd2SIlya Dryomov queue_work(osdc->notify_wq, &event_work->work); 2500a40c4f10SYehuda Sadeh } 2501a40c4f10SYehuda Sadeh 2502a40c4f10SYehuda Sadeh return; 2503a40c4f10SYehuda Sadeh 2504a40c4f10SYehuda Sadeh bad: 2505a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 2506a40c4f10SYehuda Sadeh } 2507a40c4f10SYehuda Sadeh 2508a40c4f10SYehuda Sadeh /* 2509e65550fdSAlex Elder * build new request AND message 2510e65550fdSAlex Elder * 2511e65550fdSAlex Elder */ 2512e65550fdSAlex Elder void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, 2513e65550fdSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 2514e65550fdSAlex Elder struct timespec *mtime) 2515e65550fdSAlex Elder { 2516e65550fdSAlex Elder struct ceph_msg *msg = req->r_request; 2517e65550fdSAlex Elder void *p; 2518e65550fdSAlex Elder size_t msg_size; 2519e65550fdSAlex Elder int flags = req->r_flags; 2520e65550fdSAlex Elder u64 data_len; 2521e65550fdSAlex Elder unsigned int i; 2522e65550fdSAlex Elder 2523e65550fdSAlex Elder req->r_snapid = snap_id; 252484127282SIlya Dryomov WARN_ON(snapc != req->r_snapc); 2525e65550fdSAlex Elder 2526e65550fdSAlex Elder /* encode request */ 2527e65550fdSAlex Elder msg->hdr.version = cpu_to_le16(4); 2528e65550fdSAlex Elder 2529e65550fdSAlex Elder p = msg->front.iov_base; 2530e65550fdSAlex Elder ceph_encode_32(&p, 1); /* client_inc is always 1 */ 2531e65550fdSAlex Elder req->r_request_osdmap_epoch = p; 2532e65550fdSAlex Elder p += 4; 2533e65550fdSAlex Elder req->r_request_flags = p; 2534e65550fdSAlex Elder p += 4; 2535e65550fdSAlex Elder if (req->r_flags & CEPH_OSD_FLAG_WRITE) 2536e65550fdSAlex Elder ceph_encode_timespec(p, mtime); 2537e65550fdSAlex Elder p += sizeof(struct ceph_timespec); 2538e65550fdSAlex Elder req->r_request_reassert_version = p; 2539e65550fdSAlex Elder p += sizeof(struct ceph_eversion); /* will get filled in */ 2540e65550fdSAlex Elder 2541e65550fdSAlex Elder /* oloc */ 2542e65550fdSAlex Elder ceph_encode_8(&p, 4); 2543e65550fdSAlex Elder ceph_encode_8(&p, 4); 2544e65550fdSAlex Elder ceph_encode_32(&p, 8 + 4 + 4); 2545e65550fdSAlex Elder req->r_request_pool = p; 2546e65550fdSAlex Elder p += 8; 2547e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2548e65550fdSAlex Elder ceph_encode_32(&p, 0); /* key len */ 2549e65550fdSAlex Elder 2550e65550fdSAlex Elder ceph_encode_8(&p, 1); 2551e65550fdSAlex Elder req->r_request_pgid = p; 2552e65550fdSAlex Elder p += 8 + 4; 2553e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2554e65550fdSAlex Elder 2555e65550fdSAlex Elder /* oid */ 25563c972c95SIlya Dryomov ceph_encode_32(&p, req->r_base_oid.name_len); 25573c972c95SIlya Dryomov memcpy(p, req->r_base_oid.name, req->r_base_oid.name_len); 2558d30291b9SIlya Dryomov dout("oid %*pE len %d\n", req->r_base_oid.name_len, 25593c972c95SIlya Dryomov req->r_base_oid.name, req->r_base_oid.name_len); 25603c972c95SIlya Dryomov p += req->r_base_oid.name_len; 2561e65550fdSAlex Elder 2562e65550fdSAlex Elder /* ops--can imply data */ 2563e65550fdSAlex Elder ceph_encode_16(&p, (u16)req->r_num_ops); 2564e65550fdSAlex Elder data_len = 0; 2565e65550fdSAlex Elder for (i = 0; i < req->r_num_ops; i++) { 2566e65550fdSAlex Elder data_len += osd_req_encode_op(req, p, i); 2567e65550fdSAlex Elder p += sizeof(struct ceph_osd_op); 2568e65550fdSAlex Elder } 2569e65550fdSAlex Elder 2570e65550fdSAlex Elder /* snaps */ 2571e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapid); 2572e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 2573e65550fdSAlex Elder ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 2574e65550fdSAlex Elder if (req->r_snapc) { 257584127282SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) { 2576e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc->snaps[i]); 2577e65550fdSAlex Elder } 2578e65550fdSAlex Elder } 2579e65550fdSAlex Elder 2580e65550fdSAlex Elder req->r_request_attempts = p; 2581e65550fdSAlex Elder p += 4; 2582e65550fdSAlex Elder 2583e65550fdSAlex Elder /* data */ 2584e65550fdSAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 2585e65550fdSAlex Elder u16 data_off; 2586e65550fdSAlex Elder 2587e65550fdSAlex Elder /* 2588e65550fdSAlex Elder * The header "data_off" is a hint to the receiver 2589e65550fdSAlex Elder * allowing it to align received data into its 2590e65550fdSAlex Elder * buffers such that there's no need to re-copy 2591e65550fdSAlex Elder * it before writing it to disk (direct I/O). 2592e65550fdSAlex Elder */ 2593e65550fdSAlex Elder data_off = (u16) (off & 0xffff); 2594e65550fdSAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 2595e65550fdSAlex Elder } 2596e65550fdSAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 2597e65550fdSAlex Elder 2598e65550fdSAlex Elder BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 2599e65550fdSAlex Elder msg_size = p - msg->front.iov_base; 2600e65550fdSAlex Elder msg->front.iov_len = msg_size; 2601e65550fdSAlex Elder msg->hdr.front_len = cpu_to_le32(msg_size); 2602e65550fdSAlex Elder 2603e65550fdSAlex Elder dout("build_request msg_size was %d\n", (int)msg_size); 2604e65550fdSAlex Elder } 2605e65550fdSAlex Elder EXPORT_SYMBOL(ceph_osdc_build_request); 2606e65550fdSAlex Elder 2607e65550fdSAlex Elder /* 26083d14c5d2SYehuda Sadeh * Register request, send initial attempt. 26093d14c5d2SYehuda Sadeh */ 26103d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 26113d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 26123d14c5d2SYehuda Sadeh bool nofail) 26133d14c5d2SYehuda Sadeh { 26140bbfdfe8SIlya Dryomov int rc; 26153d14c5d2SYehuda Sadeh 26163d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 26173d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 26180bbfdfe8SIlya Dryomov 26190bbfdfe8SIlya Dryomov rc = __ceph_osdc_start_request(osdc, req, nofail); 26200bbfdfe8SIlya Dryomov 26213d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 26223d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 26230bbfdfe8SIlya Dryomov 26243d14c5d2SYehuda Sadeh return rc; 26253d14c5d2SYehuda Sadeh } 26263d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 26273d14c5d2SYehuda Sadeh 26283d14c5d2SYehuda Sadeh /* 2629c9f9b93dSIlya Dryomov * Unregister a registered request. The request is not completed (i.e. 2630c9f9b93dSIlya Dryomov * no callbacks or wakeups) - higher layers are supposed to know what 2631c9f9b93dSIlya Dryomov * they are canceling. 2632c9f9b93dSIlya Dryomov */ 2633c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 2634c9f9b93dSIlya Dryomov { 2635c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 2636c9f9b93dSIlya Dryomov 2637c9f9b93dSIlya Dryomov mutex_lock(&osdc->request_mutex); 2638c9f9b93dSIlya Dryomov if (req->r_linger) 2639c9f9b93dSIlya Dryomov __unregister_linger_request(osdc, req); 2640c9f9b93dSIlya Dryomov __unregister_request(osdc, req); 2641c9f9b93dSIlya Dryomov mutex_unlock(&osdc->request_mutex); 2642c9f9b93dSIlya Dryomov 2643c9f9b93dSIlya Dryomov dout("%s %p tid %llu canceled\n", __func__, req, req->r_tid); 2644c9f9b93dSIlya Dryomov } 2645c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 2646c9f9b93dSIlya Dryomov 2647c9f9b93dSIlya Dryomov /* 26483d14c5d2SYehuda Sadeh * wait for a request to complete 26493d14c5d2SYehuda Sadeh */ 26503d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 26513d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 26523d14c5d2SYehuda Sadeh { 26533d14c5d2SYehuda Sadeh int rc; 26543d14c5d2SYehuda Sadeh 2655c9f9b93dSIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 2656c9f9b93dSIlya Dryomov 26573d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 26583d14c5d2SYehuda Sadeh if (rc < 0) { 2659c9f9b93dSIlya Dryomov dout("%s %p tid %llu interrupted\n", __func__, req, req->r_tid); 2660c9f9b93dSIlya Dryomov ceph_osdc_cancel_request(req); 266125845472SSage Weil complete_request(req); 26623d14c5d2SYehuda Sadeh return rc; 26633d14c5d2SYehuda Sadeh } 26643d14c5d2SYehuda Sadeh 2665c9f9b93dSIlya Dryomov dout("%s %p tid %llu result %d\n", __func__, req, req->r_tid, 2666c9f9b93dSIlya Dryomov req->r_result); 26673d14c5d2SYehuda Sadeh return req->r_result; 26683d14c5d2SYehuda Sadeh } 26693d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 26703d14c5d2SYehuda Sadeh 26713d14c5d2SYehuda Sadeh /* 26723d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 26733d14c5d2SYehuda Sadeh */ 26743d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 26753d14c5d2SYehuda Sadeh { 26763d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 26773d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 26783d14c5d2SYehuda Sadeh 26793d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 26803d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 26813d14c5d2SYehuda Sadeh while (1) { 26823d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 26833d14c5d2SYehuda Sadeh if (!req) 26843d14c5d2SYehuda Sadeh break; 26853d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 26863d14c5d2SYehuda Sadeh break; 26873d14c5d2SYehuda Sadeh 26883d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 26893d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 26903d14c5d2SYehuda Sadeh continue; 26913d14c5d2SYehuda Sadeh 26923d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 26933d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 26943d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 26953d14c5d2SYehuda Sadeh req->r_tid, last_tid); 26963d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 26973d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 26983d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 26993d14c5d2SYehuda Sadeh } 27003d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 27013d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 27023d14c5d2SYehuda Sadeh } 27033d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 27043d14c5d2SYehuda Sadeh 27053d14c5d2SYehuda Sadeh /* 2706dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 2707dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 2708dd935f44SJosh Durgin */ 2709f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 2710dd935f44SJosh Durgin { 2711dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 2712dd935f44SJosh Durgin } 2713dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 2714dd935f44SJosh Durgin 2715dd935f44SJosh Durgin 2716dd935f44SJosh Durgin /* 27173d14c5d2SYehuda Sadeh * init, shutdown 27183d14c5d2SYehuda Sadeh */ 27193d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 27203d14c5d2SYehuda Sadeh { 27213d14c5d2SYehuda Sadeh int err; 27223d14c5d2SYehuda Sadeh 27233d14c5d2SYehuda Sadeh dout("init\n"); 27243d14c5d2SYehuda Sadeh osdc->client = client; 27253d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 27263d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 27273d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 27283d14c5d2SYehuda Sadeh osdc->last_tid = 0; 27293d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 27303d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 27313d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 27323d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 27336f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 27346f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 2735a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 27363d14c5d2SYehuda Sadeh osdc->num_requests = 0; 27373d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 27383d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2739a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 2740a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 2741a40c4f10SYehuda Sadeh osdc->event_count = 0; 27423d14c5d2SYehuda Sadeh 27433d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 2744a319bf56SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 27453d14c5d2SYehuda Sadeh 27463d14c5d2SYehuda Sadeh err = -ENOMEM; 27479e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 27489e767adbSIlya Dryomov ceph_osd_request_cache); 27493d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 27503d14c5d2SYehuda Sadeh goto out; 27513d14c5d2SYehuda Sadeh 2752d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2753711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op"); 27543d14c5d2SYehuda Sadeh if (err < 0) 27553d14c5d2SYehuda Sadeh goto out_mempool; 2756d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 2757711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op_reply"); 27583d14c5d2SYehuda Sadeh if (err < 0) 27593d14c5d2SYehuda Sadeh goto out_msgpool; 2760a40c4f10SYehuda Sadeh 2761dbcae088SDan Carpenter err = -ENOMEM; 2762a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2763dbcae088SDan Carpenter if (!osdc->notify_wq) 2764c172ec5cSIlya Dryomov goto out_msgpool_reply; 2765c172ec5cSIlya Dryomov 27663d14c5d2SYehuda Sadeh return 0; 27673d14c5d2SYehuda Sadeh 2768c172ec5cSIlya Dryomov out_msgpool_reply: 2769c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 27703d14c5d2SYehuda Sadeh out_msgpool: 27713d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 27723d14c5d2SYehuda Sadeh out_mempool: 27733d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 27743d14c5d2SYehuda Sadeh out: 27753d14c5d2SYehuda Sadeh return err; 27763d14c5d2SYehuda Sadeh } 27773d14c5d2SYehuda Sadeh 27783d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 27793d14c5d2SYehuda Sadeh { 2780a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2781a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 27823d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 27833d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 278442a2c09fSIlya Dryomov 278542a2c09fSIlya Dryomov mutex_lock(&osdc->request_mutex); 278642a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 278742a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 278842a2c09fSIlya Dryomov struct ceph_osd, o_node); 278942a2c09fSIlya Dryomov remove_osd(osdc, osd); 279042a2c09fSIlya Dryomov } 279142a2c09fSIlya Dryomov mutex_unlock(&osdc->request_mutex); 279242a2c09fSIlya Dryomov 27933d14c5d2SYehuda Sadeh if (osdc->osdmap) { 27943d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 27953d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 27963d14c5d2SYehuda Sadeh } 27973d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 27983d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 27993d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 28003d14c5d2SYehuda Sadeh } 28013d14c5d2SYehuda Sadeh 28023d14c5d2SYehuda Sadeh /* 28033d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 28043d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 28053d14c5d2SYehuda Sadeh */ 28063d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 28073d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 28083d14c5d2SYehuda Sadeh u64 off, u64 *plen, 28093d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2810b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 28113d14c5d2SYehuda Sadeh { 28123d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 28133d14c5d2SYehuda Sadeh int rc = 0; 28143d14c5d2SYehuda Sadeh 28153d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 28163d14c5d2SYehuda Sadeh vino.snap, off, *plen); 2817715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 28183d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 2819acead002SAlex Elder NULL, truncate_seq, truncate_size, 2820153e5167SAlex Elder false); 28216816282dSSage Weil if (IS_ERR(req)) 28226816282dSSage Weil return PTR_ERR(req); 28233d14c5d2SYehuda Sadeh 28243d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 28250fff87ecSAlex Elder 2826406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 2827a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 28283d14c5d2SYehuda Sadeh 2829e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 283043bfe5deSAlex Elder off, *plen, *plen, page_align); 28313d14c5d2SYehuda Sadeh 283279528734SAlex Elder ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); 283302ee07d3SAlex Elder 28343d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 28353d14c5d2SYehuda Sadeh if (!rc) 28363d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 28373d14c5d2SYehuda Sadeh 28383d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 28393d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 28403d14c5d2SYehuda Sadeh return rc; 28413d14c5d2SYehuda Sadeh } 28423d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 28433d14c5d2SYehuda Sadeh 28443d14c5d2SYehuda Sadeh /* 28453d14c5d2SYehuda Sadeh * do a synchronous write on N pages 28463d14c5d2SYehuda Sadeh */ 28473d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 28483d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 28493d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 28503d14c5d2SYehuda Sadeh u64 off, u64 len, 28513d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 28523d14c5d2SYehuda Sadeh struct timespec *mtime, 285324808826SAlex Elder struct page **pages, int num_pages) 28543d14c5d2SYehuda Sadeh { 28553d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 28563d14c5d2SYehuda Sadeh int rc = 0; 2857b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 28583d14c5d2SYehuda Sadeh 2859acead002SAlex Elder BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ 2860715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 28613d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 286224808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2863acead002SAlex Elder snapc, truncate_seq, truncate_size, 2864153e5167SAlex Elder true); 28656816282dSSage Weil if (IS_ERR(req)) 28666816282dSSage Weil return PTR_ERR(req); 28673d14c5d2SYehuda Sadeh 28683d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 2869406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 287043bfe5deSAlex Elder false, false); 287143bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 28723d14c5d2SYehuda Sadeh 287379528734SAlex Elder ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); 287402ee07d3SAlex Elder 287587f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 28763d14c5d2SYehuda Sadeh if (!rc) 28773d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 28783d14c5d2SYehuda Sadeh 28793d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 28803d14c5d2SYehuda Sadeh if (rc == 0) 28813d14c5d2SYehuda Sadeh rc = len; 28823d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 28833d14c5d2SYehuda Sadeh return rc; 28843d14c5d2SYehuda Sadeh } 28853d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 28863d14c5d2SYehuda Sadeh 28875522ae0bSAlex Elder int ceph_osdc_setup(void) 28885522ae0bSAlex Elder { 28893f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 28903f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 28913f1af42aSIlya Dryomov 28925522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 28933f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 28943f1af42aSIlya Dryomov 0, 0, NULL); 28955522ae0bSAlex Elder 28965522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 28975522ae0bSAlex Elder } 28985522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 28995522ae0bSAlex Elder 29005522ae0bSAlex Elder void ceph_osdc_cleanup(void) 29015522ae0bSAlex Elder { 29025522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 29035522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 29045522ae0bSAlex Elder ceph_osd_request_cache = NULL; 29055522ae0bSAlex Elder } 29065522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 29075522ae0bSAlex Elder 29083d14c5d2SYehuda Sadeh /* 29093d14c5d2SYehuda Sadeh * handle incoming message 29103d14c5d2SYehuda Sadeh */ 29113d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 29123d14c5d2SYehuda Sadeh { 29133d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29143d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 29153d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 29163d14c5d2SYehuda Sadeh 29173d14c5d2SYehuda Sadeh if (!osd) 29183d14c5d2SYehuda Sadeh goto out; 29193d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 29203d14c5d2SYehuda Sadeh 29213d14c5d2SYehuda Sadeh switch (type) { 29223d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 29233d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 29243d14c5d2SYehuda Sadeh break; 29253d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 292670cf052dSShraddha Barke handle_reply(osdc, msg); 29273d14c5d2SYehuda Sadeh break; 2928a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2929a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2930a40c4f10SYehuda Sadeh break; 29313d14c5d2SYehuda Sadeh 29323d14c5d2SYehuda Sadeh default: 29333d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 29343d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 29353d14c5d2SYehuda Sadeh } 29363d14c5d2SYehuda Sadeh out: 29373d14c5d2SYehuda Sadeh ceph_msg_put(msg); 29383d14c5d2SYehuda Sadeh } 29393d14c5d2SYehuda Sadeh 29403d14c5d2SYehuda Sadeh /* 2941d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 2942d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 2943d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 29443d14c5d2SYehuda Sadeh */ 29453d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 29463d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 29473d14c5d2SYehuda Sadeh int *skip) 29483d14c5d2SYehuda Sadeh { 29493d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29503d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 29513d14c5d2SYehuda Sadeh struct ceph_msg *m; 29523d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 29533f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 29543d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 29553d14c5d2SYehuda Sadeh u64 tid; 29563d14c5d2SYehuda Sadeh 29573d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 29583d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 2959fcd00b68SIlya Dryomov req = lookup_request(&osdc->requests, tid); 29603d14c5d2SYehuda Sadeh if (!req) { 2961cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 2962cd8140c6SIlya Dryomov osd->o_osd, tid); 29633d14c5d2SYehuda Sadeh m = NULL; 2964d15f9d69SIlya Dryomov *skip = 1; 29653d14c5d2SYehuda Sadeh goto out; 29663d14c5d2SYehuda Sadeh } 29673d14c5d2SYehuda Sadeh 29688921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 29693d14c5d2SYehuda Sadeh 2970f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 2971d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 2972d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 2973d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 29743f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 29753f0a4ac5SIlya Dryomov false); 29763d14c5d2SYehuda Sadeh if (!m) 29773d14c5d2SYehuda Sadeh goto out; 29783d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 29793d14c5d2SYehuda Sadeh req->r_reply = m; 29803d14c5d2SYehuda Sadeh } 29813d14c5d2SYehuda Sadeh 2982d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 2983d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 2984d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 2985d15f9d69SIlya Dryomov req->r_reply->data_length); 29863d14c5d2SYehuda Sadeh m = NULL; 2987d15f9d69SIlya Dryomov *skip = 1; 29883d14c5d2SYehuda Sadeh goto out; 29893d14c5d2SYehuda Sadeh } 2990d15f9d69SIlya Dryomov 2991d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 29923d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 29933d14c5d2SYehuda Sadeh 29943d14c5d2SYehuda Sadeh out: 29953d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 29963d14c5d2SYehuda Sadeh return m; 29973d14c5d2SYehuda Sadeh } 29983d14c5d2SYehuda Sadeh 29993d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 30003d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 30013d14c5d2SYehuda Sadeh int *skip) 30023d14c5d2SYehuda Sadeh { 30033d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 30043d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 30053d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 30063d14c5d2SYehuda Sadeh 30071c20f2d2SAlex Elder *skip = 0; 30083d14c5d2SYehuda Sadeh switch (type) { 30093d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 3010a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 3011b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 30123d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 30133d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 30143d14c5d2SYehuda Sadeh default: 30153d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 30163d14c5d2SYehuda Sadeh osd->o_osd); 30173d14c5d2SYehuda Sadeh *skip = 1; 30183d14c5d2SYehuda Sadeh return NULL; 30193d14c5d2SYehuda Sadeh } 30203d14c5d2SYehuda Sadeh } 30213d14c5d2SYehuda Sadeh 30223d14c5d2SYehuda Sadeh /* 30233d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 30243d14c5d2SYehuda Sadeh */ 30253d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 30263d14c5d2SYehuda Sadeh { 30273d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 30283d14c5d2SYehuda Sadeh if (get_osd(osd)) 30293d14c5d2SYehuda Sadeh return con; 30303d14c5d2SYehuda Sadeh return NULL; 30313d14c5d2SYehuda Sadeh } 30323d14c5d2SYehuda Sadeh 30333d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 30343d14c5d2SYehuda Sadeh { 30353d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 30363d14c5d2SYehuda Sadeh put_osd(osd); 30373d14c5d2SYehuda Sadeh } 30383d14c5d2SYehuda Sadeh 30393d14c5d2SYehuda Sadeh /* 30403d14c5d2SYehuda Sadeh * authentication 30413d14c5d2SYehuda Sadeh */ 3042a3530df3SAlex Elder /* 3043a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 3044a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 3045a3530df3SAlex Elder */ 3046a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 30478f43fb53SAlex Elder int *proto, int force_new) 30483d14c5d2SYehuda Sadeh { 30493d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 30503d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 30513d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 305274f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 30533d14c5d2SYehuda Sadeh 305474f1869fSAlex Elder if (force_new && auth->authorizer) { 30556c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 305674f1869fSAlex Elder auth->authorizer = NULL; 30573d14c5d2SYehuda Sadeh } 305827859f97SSage Weil if (!auth->authorizer) { 305927859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 3060a3530df3SAlex Elder auth); 30613d14c5d2SYehuda Sadeh if (ret) 3062a3530df3SAlex Elder return ERR_PTR(ret); 306327859f97SSage Weil } else { 306427859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 30650bed9b5cSSage Weil auth); 30660bed9b5cSSage Weil if (ret) 30670bed9b5cSSage Weil return ERR_PTR(ret); 30683d14c5d2SYehuda Sadeh } 30693d14c5d2SYehuda Sadeh *proto = ac->protocol; 307074f1869fSAlex Elder 3071a3530df3SAlex Elder return auth; 30723d14c5d2SYehuda Sadeh } 30733d14c5d2SYehuda Sadeh 30743d14c5d2SYehuda Sadeh 30753d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 30763d14c5d2SYehuda Sadeh { 30773d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 30783d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 30793d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 30803d14c5d2SYehuda Sadeh 308127859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 30823d14c5d2SYehuda Sadeh } 30833d14c5d2SYehuda Sadeh 30843d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 30853d14c5d2SYehuda Sadeh { 30863d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 30873d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 30883d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 30893d14c5d2SYehuda Sadeh 309027859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 30913d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 30923d14c5d2SYehuda Sadeh } 30933d14c5d2SYehuda Sadeh 309479dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 309533d07337SYan, Zheng { 309679dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 309733d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 309879dbd1baSIlya Dryomov 309933d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 310033d07337SYan, Zheng } 310133d07337SYan, Zheng 310279dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 310333d07337SYan, Zheng { 310479dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 310533d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 310679dbd1baSIlya Dryomov 310733d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 310833d07337SYan, Zheng } 310933d07337SYan, Zheng 31103d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 31113d14c5d2SYehuda Sadeh .get = get_osd_con, 31123d14c5d2SYehuda Sadeh .put = put_osd_con, 31133d14c5d2SYehuda Sadeh .dispatch = dispatch, 31143d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 31153d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 31163d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 31173d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 311879dbd1baSIlya Dryomov .sign_message = osd_sign_message, 311979dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 31203d14c5d2SYehuda Sadeh .fault = osd_reset, 31213d14c5d2SYehuda Sadeh }; 3122