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 353a66dd383SIlya Dryomov target_destroy(&req->r_t); 3543d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 355d30291b9SIlya Dryomov 3563d14c5d2SYehuda Sadeh if (req->r_mempool) 3573d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 3583f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 3595522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 3603f1af42aSIlya Dryomov else 3613f1af42aSIlya Dryomov kfree(req); 3623d14c5d2SYehuda Sadeh } 3639e94af20SIlya Dryomov 3649e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 3659e94af20SIlya Dryomov { 3669e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3679e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3689e94af20SIlya Dryomov kref_get(&req->r_kref); 3699e94af20SIlya Dryomov } 3709e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 3719e94af20SIlya Dryomov 3729e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 3739e94af20SIlya Dryomov { 3743ed97d63SIlya Dryomov if (req) { 3759e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3769e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3779e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 3789e94af20SIlya Dryomov } 3793ed97d63SIlya Dryomov } 3809e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 3813d14c5d2SYehuda Sadeh 3823d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 3833d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 3841b83bef2SSage Weil unsigned int num_ops, 3853d14c5d2SYehuda Sadeh bool use_mempool, 38654a54007SAlex Elder gfp_t gfp_flags) 3873d14c5d2SYehuda Sadeh { 3883d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 3893d14c5d2SYehuda Sadeh 3903d14c5d2SYehuda Sadeh if (use_mempool) { 3913f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 3923d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 3933f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 3943f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 3953d14c5d2SYehuda Sadeh } else { 3963f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 3973f1af42aSIlya Dryomov req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), 3983f1af42aSIlya Dryomov gfp_flags); 3993d14c5d2SYehuda Sadeh } 4003f1af42aSIlya Dryomov if (unlikely(!req)) 4013d14c5d2SYehuda Sadeh return NULL; 4023d14c5d2SYehuda Sadeh 4033f1af42aSIlya Dryomov /* req only, each op is zeroed in _osd_req_op_init() */ 4043f1af42aSIlya Dryomov memset(req, 0, sizeof(*req)); 4053f1af42aSIlya Dryomov 4063d14c5d2SYehuda Sadeh req->r_osdc = osdc; 4073d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 40879528734SAlex Elder req->r_num_ops = num_ops; 40984127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 41084127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 4113d14c5d2SYehuda Sadeh 4123d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 4133d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 4143d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 415a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 4163d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 417a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 4181d0326b1SIlya Dryomov INIT_LIST_HEAD(&req->r_linger_osd_item); 419935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 420cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 421cd43045cSSage Weil 422a66dd383SIlya Dryomov target_init(&req->r_t); 42322116525SIlya Dryomov 42413d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 42513d1ad16SIlya Dryomov return req; 4263f1af42aSIlya Dryomov } 42713d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 4283f1af42aSIlya Dryomov 42913d1ad16SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 43013d1ad16SIlya Dryomov { 43113d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 43213d1ad16SIlya Dryomov struct ceph_msg *msg; 43313d1ad16SIlya Dryomov int msg_size; 4343d14c5d2SYehuda Sadeh 435d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 436d30291b9SIlya Dryomov 43713d1ad16SIlya Dryomov /* create request message */ 438ae458f5aSIlya Dryomov msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */ 439ae458f5aSIlya Dryomov msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */ 440ae458f5aSIlya Dryomov msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 441ae458f5aSIlya Dryomov msg_size += 1 + 8 + 4 + 4; /* pgid */ 44213d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 44313d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 444ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 445ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 44613d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 447ae458f5aSIlya Dryomov msg_size += 4; /* retry_attempt */ 448ae458f5aSIlya Dryomov 44913d1ad16SIlya Dryomov if (req->r_mempool) 4503d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 4513d14c5d2SYehuda Sadeh else 45213d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); 45313d1ad16SIlya Dryomov if (!msg) 45413d1ad16SIlya Dryomov return -ENOMEM; 4553d14c5d2SYehuda Sadeh 4563d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 4573d14c5d2SYehuda Sadeh req->r_request = msg; 4583d14c5d2SYehuda Sadeh 45913d1ad16SIlya Dryomov /* create reply message */ 46013d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 461711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 462711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 46313d1ad16SIlya Dryomov 46413d1ad16SIlya Dryomov if (req->r_mempool) 46513d1ad16SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 46613d1ad16SIlya Dryomov else 46713d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); 46813d1ad16SIlya Dryomov if (!msg) 46913d1ad16SIlya Dryomov return -ENOMEM; 47013d1ad16SIlya Dryomov 47113d1ad16SIlya Dryomov req->r_reply = msg; 47213d1ad16SIlya Dryomov 47313d1ad16SIlya Dryomov return 0; 47413d1ad16SIlya Dryomov } 47513d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 4763d14c5d2SYehuda Sadeh 477a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 478a8dd0a37SAlex Elder { 479a8dd0a37SAlex Elder switch (opcode) { 48070b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 48170b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 48270b5bfa3SIlya Dryomov #undef GENERATE_CASE 483a8dd0a37SAlex Elder default: 484a8dd0a37SAlex Elder return false; 485a8dd0a37SAlex Elder } 486a8dd0a37SAlex Elder } 487a8dd0a37SAlex Elder 48833803f33SAlex Elder /* 48933803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 49033803f33SAlex Elder * other information associated with them. It also serves as a 49133803f33SAlex Elder * common init routine for all the other init functions, below. 49233803f33SAlex Elder */ 493c99d2d4aSAlex Elder static struct ceph_osd_req_op * 49449719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 495144cba14SYan, Zheng u16 opcode, u32 flags) 49633803f33SAlex Elder { 497c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 498c99d2d4aSAlex Elder 499c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 50033803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 50133803f33SAlex Elder 502c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 50333803f33SAlex Elder memset(op, 0, sizeof (*op)); 50433803f33SAlex Elder op->op = opcode; 505144cba14SYan, Zheng op->flags = flags; 506c99d2d4aSAlex Elder 507c99d2d4aSAlex Elder return op; 50833803f33SAlex Elder } 50933803f33SAlex Elder 51049719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 511144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 51249719778SAlex Elder { 513144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 51449719778SAlex Elder } 51549719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 51649719778SAlex Elder 517c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 518c99d2d4aSAlex Elder unsigned int which, u16 opcode, 51933803f33SAlex Elder u64 offset, u64 length, 52033803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 52133803f33SAlex Elder { 522144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 523144cba14SYan, Zheng opcode, 0); 52433803f33SAlex Elder size_t payload_len = 0; 52533803f33SAlex Elder 526ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 527e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 528e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 52933803f33SAlex Elder 53033803f33SAlex Elder op->extent.offset = offset; 53133803f33SAlex Elder op->extent.length = length; 53233803f33SAlex Elder op->extent.truncate_size = truncate_size; 53333803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 534e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 53533803f33SAlex Elder payload_len += length; 53633803f33SAlex Elder 537de2aa102SIlya Dryomov op->indata_len = payload_len; 53833803f33SAlex Elder } 53933803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 54033803f33SAlex Elder 541c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 542c99d2d4aSAlex Elder unsigned int which, u64 length) 543e5975c7cSAlex Elder { 544c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 545c99d2d4aSAlex Elder u64 previous; 546c99d2d4aSAlex Elder 547c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 548c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 549c99d2d4aSAlex Elder previous = op->extent.length; 550e5975c7cSAlex Elder 551e5975c7cSAlex Elder if (length == previous) 552e5975c7cSAlex Elder return; /* Nothing to do */ 553e5975c7cSAlex Elder BUG_ON(length > previous); 554e5975c7cSAlex Elder 555e5975c7cSAlex Elder op->extent.length = length; 556de2aa102SIlya Dryomov op->indata_len -= previous - length; 557e5975c7cSAlex Elder } 558e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 559e5975c7cSAlex Elder 5602c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 5612c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 5622c63f49aSYan, Zheng { 5632c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 5642c63f49aSYan, Zheng 5652c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 5662c63f49aSYan, Zheng 5672c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 5682c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 5692c63f49aSYan, Zheng /* dup previous one */ 5702c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 5712c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 5722c63f49aSYan, Zheng op->extent = prev_op->extent; 5732c63f49aSYan, Zheng /* adjust offset */ 5742c63f49aSYan, Zheng op->extent.offset += offset_inc; 5752c63f49aSYan, Zheng op->extent.length -= offset_inc; 5762c63f49aSYan, Zheng 5772c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 5782c63f49aSYan, Zheng op->indata_len -= offset_inc; 5792c63f49aSYan, Zheng } 5802c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 5812c63f49aSYan, Zheng 582c99d2d4aSAlex Elder void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 58304017e29SAlex Elder u16 opcode, const char *class, const char *method) 58433803f33SAlex Elder { 585144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 586144cba14SYan, Zheng opcode, 0); 5875f562df5SAlex Elder struct ceph_pagelist *pagelist; 58833803f33SAlex Elder size_t payload_len = 0; 58933803f33SAlex Elder size_t size; 59033803f33SAlex Elder 59133803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 59233803f33SAlex Elder 5935f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 5945f562df5SAlex Elder BUG_ON(!pagelist); 5955f562df5SAlex Elder ceph_pagelist_init(pagelist); 5965f562df5SAlex Elder 59733803f33SAlex Elder op->cls.class_name = class; 59833803f33SAlex Elder size = strlen(class); 59933803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 60033803f33SAlex Elder op->cls.class_len = size; 6015f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 60233803f33SAlex Elder payload_len += size; 60333803f33SAlex Elder 60433803f33SAlex Elder op->cls.method_name = method; 60533803f33SAlex Elder size = strlen(method); 60633803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 60733803f33SAlex Elder op->cls.method_len = size; 6085f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 60933803f33SAlex Elder payload_len += size; 61033803f33SAlex Elder 611a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 6125f562df5SAlex Elder 61333803f33SAlex Elder op->cls.argc = 0; /* currently unused */ 61433803f33SAlex Elder 615de2aa102SIlya Dryomov op->indata_len = payload_len; 61633803f33SAlex Elder } 61733803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 6188c042b0dSAlex Elder 619d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 620d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 621d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 622d74b50beSYan, Zheng { 623144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 624144cba14SYan, Zheng opcode, 0); 625d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 626d74b50beSYan, Zheng size_t payload_len; 627d74b50beSYan, Zheng 628d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 629d74b50beSYan, Zheng 630d74b50beSYan, Zheng pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); 631d74b50beSYan, Zheng if (!pagelist) 632d74b50beSYan, Zheng return -ENOMEM; 633d74b50beSYan, Zheng 634d74b50beSYan, Zheng ceph_pagelist_init(pagelist); 635d74b50beSYan, Zheng 636d74b50beSYan, Zheng payload_len = strlen(name); 637d74b50beSYan, Zheng op->xattr.name_len = payload_len; 638d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 639d74b50beSYan, Zheng 640d74b50beSYan, Zheng op->xattr.value_len = size; 641d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 642d74b50beSYan, Zheng payload_len += size; 643d74b50beSYan, Zheng 644d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 645d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 646d74b50beSYan, Zheng 647d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 648de2aa102SIlya Dryomov op->indata_len = payload_len; 649d74b50beSYan, Zheng return 0; 650d74b50beSYan, Zheng } 651d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 652d74b50beSYan, Zheng 653c99d2d4aSAlex Elder void osd_req_op_watch_init(struct ceph_osd_request *osd_req, 654c99d2d4aSAlex Elder unsigned int which, u16 opcode, 65533803f33SAlex Elder u64 cookie, u64 version, int flag) 65633803f33SAlex Elder { 657144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 658144cba14SYan, Zheng opcode, 0); 65933803f33SAlex Elder 660c99d2d4aSAlex Elder BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 66133803f33SAlex Elder 66233803f33SAlex Elder op->watch.cookie = cookie; 6639ef1ee5aSAlex Elder op->watch.ver = version; 66433803f33SAlex Elder if (opcode == CEPH_OSD_OP_WATCH && flag) 66533803f33SAlex Elder op->watch.flag = (u8)1; 66633803f33SAlex Elder } 66733803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_watch_init); 66833803f33SAlex Elder 669c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 670c647b8a8SIlya Dryomov unsigned int which, 671c647b8a8SIlya Dryomov u64 expected_object_size, 672c647b8a8SIlya Dryomov u64 expected_write_size) 673c647b8a8SIlya Dryomov { 674c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 675144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 676144cba14SYan, Zheng 0); 677c647b8a8SIlya Dryomov 678c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 679c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 680c647b8a8SIlya Dryomov 681c647b8a8SIlya Dryomov /* 682c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 683c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 684c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 685c647b8a8SIlya Dryomov */ 686c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 687c647b8a8SIlya Dryomov } 688c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 689c647b8a8SIlya Dryomov 69090af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 691ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 692ec9123c5SAlex Elder { 693ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 694ec9123c5SAlex Elder 695ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 696ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 697ec9123c5SAlex Elder if (length) 69890af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 699ec9123c5SAlex Elder length, osd_data->alignment); 700ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 701ec9123c5SAlex Elder BUG_ON(!length); 70290af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 703ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 704ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 70590af3602SAlex Elder ceph_msg_data_add_bio(msg, osd_data->bio, length); 706ec9123c5SAlex Elder #endif 707ec9123c5SAlex Elder } else { 708ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 709ec9123c5SAlex Elder } 710ec9123c5SAlex Elder } 711ec9123c5SAlex Elder 712175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 71379528734SAlex Elder struct ceph_osd_op *dst, unsigned int which) 7143d14c5d2SYehuda Sadeh { 71579528734SAlex Elder struct ceph_osd_req_op *src; 71604017e29SAlex Elder struct ceph_osd_data *osd_data; 71754d50649SAlex Elder u64 request_data_len = 0; 71804017e29SAlex Elder u64 data_length; 719175face2SAlex Elder 72079528734SAlex Elder BUG_ON(which >= req->r_num_ops); 72179528734SAlex Elder src = &req->r_ops[which]; 722a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 723a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 724a8dd0a37SAlex Elder 725a8dd0a37SAlex Elder return 0; 726a8dd0a37SAlex Elder } 7273d14c5d2SYehuda Sadeh 728065a68f9SAlex Elder switch (src->op) { 729fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 73049719778SAlex Elder osd_data = &src->raw_data_in; 73149719778SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 732fbfab539SAlex Elder break; 7333d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 7343d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 735e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 736ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 737ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 738e30b7577SIlya Dryomov if (src->op == CEPH_OSD_OP_WRITE || 739e30b7577SIlya Dryomov src->op == CEPH_OSD_OP_WRITEFULL) 74054d50649SAlex Elder request_data_len = src->extent.length; 741175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 742175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 7433d14c5d2SYehuda Sadeh dst->extent.truncate_size = 7443d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 7453d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 7463d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 74704017e29SAlex Elder osd_data = &src->extent.osd_data; 748e30b7577SIlya Dryomov if (src->op == CEPH_OSD_OP_WRITE || 749e30b7577SIlya Dryomov src->op == CEPH_OSD_OP_WRITEFULL) 75004017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 7515476492fSAlex Elder else 75204017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 7533d14c5d2SYehuda Sadeh break; 7543d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 7553d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 7563d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 75704017e29SAlex Elder osd_data = &src->cls.request_info; 75804017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 75904017e29SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); 76004017e29SAlex Elder request_data_len = osd_data->pagelist->length; 76104017e29SAlex Elder 76204017e29SAlex Elder osd_data = &src->cls.request_data; 76304017e29SAlex Elder data_length = ceph_osd_data_length(osd_data); 76404017e29SAlex Elder if (data_length) { 76504017e29SAlex Elder BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); 76604017e29SAlex Elder dst->cls.indata_len = cpu_to_le32(data_length); 76704017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 768de2aa102SIlya Dryomov src->indata_len += data_length; 76904017e29SAlex Elder request_data_len += data_length; 77004017e29SAlex Elder } 77104017e29SAlex Elder osd_data = &src->cls.response_data; 77204017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 7733d14c5d2SYehuda Sadeh break; 7743d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 7753d14c5d2SYehuda Sadeh break; 776a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 777a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 778a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 779a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 780a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 781a40c4f10SYehuda Sadeh break; 782c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 783c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 784c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 785c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 786c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 787c647b8a8SIlya Dryomov break; 788d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 789d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 790d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 791d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 792d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 793d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 794d74b50beSYan, Zheng osd_data = &src->xattr.osd_data; 795d74b50beSYan, Zheng ceph_osdc_msg_data_add(req->r_request, osd_data); 796d74b50beSYan, Zheng request_data_len = osd_data->pagelist->length; 797d74b50beSYan, Zheng break; 798864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 799864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 800864e9197SYan, Zheng break; 8013d14c5d2SYehuda Sadeh default: 8024c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 8038f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 8044c46459cSAlex Elder WARN_ON(1); 805a8dd0a37SAlex Elder 806a8dd0a37SAlex Elder return 0; 8073d14c5d2SYehuda Sadeh } 8087b25bf5fSIlya Dryomov 809a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 8107b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 811de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 812175face2SAlex Elder 81354d50649SAlex Elder return request_data_len; 8143d14c5d2SYehuda Sadeh } 8153d14c5d2SYehuda Sadeh 8163d14c5d2SYehuda Sadeh /* 8173d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 8183d14c5d2SYehuda Sadeh * extent as needed. 8193d14c5d2SYehuda Sadeh * 8203d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 8213d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 8223d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 8233d14c5d2SYehuda Sadeh * 8243d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 8253d14c5d2SYehuda Sadeh * data quickly. 8263d14c5d2SYehuda Sadeh */ 8273d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 8283d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 8293d14c5d2SYehuda Sadeh struct ceph_vino vino, 830715e4cd4SYan, Zheng u64 off, u64 *plen, 831715e4cd4SYan, Zheng unsigned int which, int num_ops, 8323d14c5d2SYehuda Sadeh int opcode, int flags, 8333d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 8343d14c5d2SYehuda Sadeh u32 truncate_seq, 8353d14c5d2SYehuda Sadeh u64 truncate_size, 836153e5167SAlex Elder bool use_mempool) 8373d14c5d2SYehuda Sadeh { 8383d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 83975d1c941SAlex Elder u64 objnum = 0; 84075d1c941SAlex Elder u64 objoff = 0; 84175d1c941SAlex Elder u64 objlen = 0; 8426816282dSSage Weil int r; 8433d14c5d2SYehuda Sadeh 844ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 845864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 846864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 8473d14c5d2SYehuda Sadeh 848acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 849ae7ca4a3SAlex Elder GFP_NOFS); 85013d1ad16SIlya Dryomov if (!req) { 85113d1ad16SIlya Dryomov r = -ENOMEM; 85213d1ad16SIlya Dryomov goto fail; 85313d1ad16SIlya Dryomov } 85479528734SAlex Elder 855d178a9e7SAlex Elder req->r_flags = flags; 8563d14c5d2SYehuda Sadeh 8573d14c5d2SYehuda Sadeh /* calculate max write size */ 858a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 85913d1ad16SIlya Dryomov if (r) 86013d1ad16SIlya Dryomov goto fail; 861a19dadfbSAlex Elder 862864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 863144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 864864e9197SYan, Zheng } else { 865864e9197SYan, Zheng u32 object_size = le32_to_cpu(layout->fl_object_size); 866864e9197SYan, Zheng u32 object_base = off - objoff; 867ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 868d18d1e28SAlex Elder if (truncate_size <= object_base) { 869d18d1e28SAlex Elder truncate_size = 0; 870d18d1e28SAlex Elder } else { 871d18d1e28SAlex Elder truncate_size -= object_base; 872d18d1e28SAlex Elder if (truncate_size > object_size) 873d18d1e28SAlex Elder truncate_size = object_size; 874d18d1e28SAlex Elder } 875ccca4e37SYan, Zheng } 876715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 877b0270324SAlex Elder truncate_size, truncate_seq); 878864e9197SYan, Zheng } 879d18d1e28SAlex Elder 8803c972c95SIlya Dryomov req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); 881d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 882dbe0fc41SAlex Elder 88313d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 88413d1ad16SIlya Dryomov if (r) 88513d1ad16SIlya Dryomov goto fail; 88613d1ad16SIlya Dryomov 8873d14c5d2SYehuda Sadeh return req; 88813d1ad16SIlya Dryomov 88913d1ad16SIlya Dryomov fail: 89013d1ad16SIlya Dryomov ceph_osdc_put_request(req); 89113d1ad16SIlya Dryomov return ERR_PTR(r); 8923d14c5d2SYehuda Sadeh } 8933d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 8943d14c5d2SYehuda Sadeh 8953d14c5d2SYehuda Sadeh /* 8963d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 8973d14c5d2SYehuda Sadeh */ 898fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 8993d14c5d2SYehuda Sadeh 9003d14c5d2SYehuda Sadeh static struct ceph_osd_request * 9013d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 9023d14c5d2SYehuda Sadeh u64 tid) 9033d14c5d2SYehuda Sadeh { 9043d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 9053d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 9063d14c5d2SYehuda Sadeh 9073d14c5d2SYehuda Sadeh while (n) { 9083d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 9093d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 9103d14c5d2SYehuda Sadeh if (!n->rb_left) 9113d14c5d2SYehuda Sadeh return req; 9123d14c5d2SYehuda Sadeh n = n->rb_left; 9133d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 9143d14c5d2SYehuda Sadeh n = n->rb_right; 9153d14c5d2SYehuda Sadeh } else { 9163d14c5d2SYehuda Sadeh return req; 9173d14c5d2SYehuda Sadeh } 9183d14c5d2SYehuda Sadeh } 9193d14c5d2SYehuda Sadeh return NULL; 9203d14c5d2SYehuda Sadeh } 9213d14c5d2SYehuda Sadeh 9222cc6128aSIlya Dryomov static void __kick_linger_request(struct ceph_osd_request *req) 9232cc6128aSIlya Dryomov { 9242cc6128aSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 9252cc6128aSIlya Dryomov struct ceph_osd *osd = req->r_osd; 9262cc6128aSIlya Dryomov 9272cc6128aSIlya Dryomov /* 9282cc6128aSIlya Dryomov * Linger requests need to be resent with a new tid to avoid 9292cc6128aSIlya Dryomov * the dup op detection logic on the OSDs. Achieve this with 9302cc6128aSIlya Dryomov * a re-register dance instead of open-coding. 9312cc6128aSIlya Dryomov */ 9322cc6128aSIlya Dryomov ceph_osdc_get_request(req); 9332cc6128aSIlya Dryomov if (!list_empty(&req->r_linger_item)) 9342cc6128aSIlya Dryomov __unregister_linger_request(osdc, req); 9352cc6128aSIlya Dryomov else 9362cc6128aSIlya Dryomov __unregister_request(osdc, req); 9372cc6128aSIlya Dryomov __register_request(osdc, req); 9382cc6128aSIlya Dryomov ceph_osdc_put_request(req); 9392cc6128aSIlya Dryomov 9402cc6128aSIlya Dryomov /* 9412cc6128aSIlya Dryomov * Unless request has been registered as both normal and 9422cc6128aSIlya Dryomov * lingering, __unregister{,_linger}_request clears r_osd. 9432cc6128aSIlya Dryomov * However, here we need to preserve r_osd to make sure we 9442cc6128aSIlya Dryomov * requeue on the same OSD. 9452cc6128aSIlya Dryomov */ 9462cc6128aSIlya Dryomov WARN_ON(req->r_osd || !osd); 9472cc6128aSIlya Dryomov req->r_osd = osd; 9482cc6128aSIlya Dryomov 9492cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, req->r_tid); 9502cc6128aSIlya Dryomov __enqueue_request(req); 9512cc6128aSIlya Dryomov } 9522cc6128aSIlya Dryomov 9536f6c7006SSage Weil /* 9546f6c7006SSage Weil * Resubmit requests pending on the given osd. 9556f6c7006SSage Weil */ 9566f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 9576f6c7006SSage Weil struct ceph_osd *osd) 9586f6c7006SSage Weil { 959a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 960e02493c0SAlex Elder LIST_HEAD(resend); 9612cc6128aSIlya Dryomov LIST_HEAD(resend_linger); 9626f6c7006SSage Weil int err; 9636f6c7006SSage Weil 9642cc6128aSIlya Dryomov dout("%s osd%d\n", __func__, osd->o_osd); 9656f6c7006SSage Weil err = __reset_osd(osdc, osd); 966685a7555SAlex Elder if (err) 9676f6c7006SSage Weil return; 9682cc6128aSIlya Dryomov 969e02493c0SAlex Elder /* 970e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 971e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 972e02493c0SAlex Elder * sent in tid order, and that is also the order they're 973e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 974e02493c0SAlex Elder * flight will be found first, followed by all requests that 975e02493c0SAlex Elder * have not yet been sent. And to resend requests while 976e02493c0SAlex Elder * preserving this order we will want to put any sent 977e02493c0SAlex Elder * requests back on the front of the osd client's unsent 978e02493c0SAlex Elder * list. 979e02493c0SAlex Elder * 980e02493c0SAlex Elder * So we build a separate ordered list of already-sent 981e02493c0SAlex Elder * requests for the affected osd and splice it onto the 982e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 983e02493c0SAlex Elder * request that has not yet been sent we're done. Those 984e02493c0SAlex Elder * requests are already sitting right where they belong. 985e02493c0SAlex Elder */ 9866f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 987e02493c0SAlex Elder if (!req->r_sent) 988e02493c0SAlex Elder break; 9892cc6128aSIlya Dryomov 9902cc6128aSIlya Dryomov if (!req->r_linger) { 9912cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, 9922cc6128aSIlya Dryomov req->r_tid); 993e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 9946f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 9952cc6128aSIlya Dryomov } else { 9962cc6128aSIlya Dryomov list_move_tail(&req->r_req_lru_item, &resend_linger); 9972cc6128aSIlya Dryomov } 9986f6c7006SSage Weil } 999e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 1000a40c4f10SYehuda Sadeh 1001e02493c0SAlex Elder /* 10022cc6128aSIlya Dryomov * Both registered and not yet registered linger requests are 10032cc6128aSIlya Dryomov * enqueued with a new tid on the same OSD. We add/move them 10042cc6128aSIlya Dryomov * to req_unsent/o_requests at the end to keep things in tid 10052cc6128aSIlya Dryomov * order. 1006e02493c0SAlex Elder */ 1007a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 10081d0326b1SIlya Dryomov r_linger_osd_item) { 10092cc6128aSIlya Dryomov WARN_ON(!list_empty(&req->r_req_lru_item)); 10102cc6128aSIlya Dryomov __kick_linger_request(req); 1011a40c4f10SYehuda Sadeh } 10122cc6128aSIlya Dryomov 10132cc6128aSIlya Dryomov list_for_each_entry_safe(req, nreq, &resend_linger, r_req_lru_item) 10142cc6128aSIlya Dryomov __kick_linger_request(req); 10156f6c7006SSage Weil } 10166f6c7006SSage Weil 10173d14c5d2SYehuda Sadeh /* 10183d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 10193d14c5d2SYehuda Sadeh */ 10203d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 10213d14c5d2SYehuda Sadeh { 10223d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 10233d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 10243d14c5d2SYehuda Sadeh 10253d14c5d2SYehuda Sadeh if (!osd) 10263d14c5d2SYehuda Sadeh return; 10273d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 10283d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 10293d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 103083aff95eSSage Weil mutex_lock(&osdc->request_mutex); 103183aff95eSSage Weil __kick_osd_requests(osdc, osd); 1032f9d25199SAlex Elder __send_queued(osdc); 103383aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 10343d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 10353d14c5d2SYehuda Sadeh } 10363d14c5d2SYehuda Sadeh 10373d14c5d2SYehuda Sadeh /* 10383d14c5d2SYehuda Sadeh * Track open sessions with osds. 10393d14c5d2SYehuda Sadeh */ 1040e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 10413d14c5d2SYehuda Sadeh { 10423d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10433d14c5d2SYehuda Sadeh 10443d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 10453d14c5d2SYehuda Sadeh if (!osd) 10463d14c5d2SYehuda Sadeh return NULL; 10473d14c5d2SYehuda Sadeh 10483d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 10493d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1050e10006f8SAlex Elder osd->o_osd = onum; 1051f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 10523d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 1053a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 10543d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 10553d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 10563d14c5d2SYehuda Sadeh 1057b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 10583d14c5d2SYehuda Sadeh 10593d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 10603d14c5d2SYehuda Sadeh return osd; 10613d14c5d2SYehuda Sadeh } 10623d14c5d2SYehuda Sadeh 10633d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 10643d14c5d2SYehuda Sadeh { 10653d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 10663d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 10673d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 10683d14c5d2SYehuda Sadeh return osd; 10693d14c5d2SYehuda Sadeh } else { 10703d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 10713d14c5d2SYehuda Sadeh return NULL; 10723d14c5d2SYehuda Sadeh } 10733d14c5d2SYehuda Sadeh } 10743d14c5d2SYehuda Sadeh 10753d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 10763d14c5d2SYehuda Sadeh { 10773d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 10783d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 1079b28ec2f3SIlya Dryomov if (atomic_dec_and_test(&osd->o_ref)) { 1080b28ec2f3SIlya Dryomov if (osd->o_auth.authorizer) 10816c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 10823d14c5d2SYehuda Sadeh kfree(osd); 10833d14c5d2SYehuda Sadeh } 10843d14c5d2SYehuda Sadeh } 10853d14c5d2SYehuda Sadeh 1086fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1087fcd00b68SIlya Dryomov 10883d14c5d2SYehuda Sadeh /* 10893d14c5d2SYehuda Sadeh * remove an osd from our map 10903d14c5d2SYehuda Sadeh */ 10913d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 10923d14c5d2SYehuda Sadeh { 10937eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 1094cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_requests)); 1095cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_linger_requests)); 10967c6e6fc5SIlya Dryomov 10973d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 1098fcd00b68SIlya Dryomov erase_osd(&osdc->osds, osd); 10997eb71e03SIlya Dryomov } 11007eb71e03SIlya Dryomov 11017eb71e03SIlya Dryomov static void remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 11027eb71e03SIlya Dryomov { 11037eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 11047eb71e03SIlya Dryomov 11057eb71e03SIlya Dryomov if (!RB_EMPTY_NODE(&osd->o_node)) { 11063d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 11077eb71e03SIlya Dryomov __remove_osd(osdc, osd); 11083d14c5d2SYehuda Sadeh put_osd(osd); 11093d14c5d2SYehuda Sadeh } 11107eb71e03SIlya Dryomov } 11113d14c5d2SYehuda Sadeh 11123d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 11133d14c5d2SYehuda Sadeh struct ceph_osd *osd) 11143d14c5d2SYehuda Sadeh { 1115bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 11163d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1117bbf37ec3SIlya Dryomov 11183d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 1119a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 11203d14c5d2SYehuda Sadeh } 11213d14c5d2SYehuda Sadeh 1122bbf37ec3SIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd_client *osdc, 1123bbf37ec3SIlya Dryomov struct ceph_osd *osd) 1124bbf37ec3SIlya Dryomov { 1125bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 1126bbf37ec3SIlya Dryomov 1127bbf37ec3SIlya Dryomov if (list_empty(&osd->o_requests) && 1128bbf37ec3SIlya Dryomov list_empty(&osd->o_linger_requests)) 1129bbf37ec3SIlya Dryomov __move_osd_to_lru(osdc, osd); 1130bbf37ec3SIlya Dryomov } 1131bbf37ec3SIlya Dryomov 11323d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 11333d14c5d2SYehuda Sadeh { 11343d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 11353d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 11363d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 11373d14c5d2SYehuda Sadeh } 11383d14c5d2SYehuda Sadeh 11393d14c5d2SYehuda Sadeh /* 11403d14c5d2SYehuda Sadeh * reset osd connect 11413d14c5d2SYehuda Sadeh */ 11423d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 11433d14c5d2SYehuda Sadeh { 1144c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 11453d14c5d2SYehuda Sadeh 11463d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 1147a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 1148a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 11497eb71e03SIlya Dryomov remove_osd(osdc, osd); 1150c3acb181SAlex Elder return -ENODEV; 1151c3acb181SAlex Elder } 1152c3acb181SAlex Elder 1153c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 1154c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 11553d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 1156c3acb181SAlex Elder struct ceph_osd_request *req; 1157c3acb181SAlex Elder 11583d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 11590b4af2e8SIlya Dryomov "letting msgr retry\n"); 11603d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 11613d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 11623d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1163c3acb181SAlex Elder 1164c3acb181SAlex Elder return -EAGAIN; 11653d14c5d2SYehuda Sadeh } 1166c3acb181SAlex Elder 1167c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1168c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1169c3acb181SAlex Elder osd->o_incarnation++; 1170c3acb181SAlex Elder 1171c3acb181SAlex Elder return 0; 11723d14c5d2SYehuda Sadeh } 11733d14c5d2SYehuda Sadeh 11743d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 11753d14c5d2SYehuda Sadeh { 11763d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 1177a319bf56SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 11783d14c5d2SYehuda Sadeh } 11793d14c5d2SYehuda Sadeh 11803d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 11813d14c5d2SYehuda Sadeh { 11823d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 11833d14c5d2SYehuda Sadeh } 11843d14c5d2SYehuda Sadeh 11853d14c5d2SYehuda Sadeh /* 11863d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 11873d14c5d2SYehuda Sadeh * the timeout event. 11883d14c5d2SYehuda Sadeh */ 1189a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 11903d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 11913d14c5d2SYehuda Sadeh { 11923d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 11933d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 119477f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 1195fcd00b68SIlya Dryomov insert_request(&osdc->requests, req); 11963d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 11973d14c5d2SYehuda Sadeh osdc->num_requests++; 11983d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 11993d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 12003d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 12013d14c5d2SYehuda Sadeh } 1202a40c4f10SYehuda Sadeh } 1203a40c4f10SYehuda Sadeh 12043d14c5d2SYehuda Sadeh /* 12053d14c5d2SYehuda Sadeh * called under osdc->request_mutex 12063d14c5d2SYehuda Sadeh */ 12073d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 12083d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 12093d14c5d2SYehuda Sadeh { 121035f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 121135f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 121235f9f8a0SSage Weil req, req->r_tid); 121335f9f8a0SSage Weil return; 121435f9f8a0SSage Weil } 121535f9f8a0SSage Weil 12163d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 1217fcd00b68SIlya Dryomov erase_request(&osdc->requests, req); 12183d14c5d2SYehuda Sadeh osdc->num_requests--; 12193d14c5d2SYehuda Sadeh 12203d14c5d2SYehuda Sadeh if (req->r_osd) { 12213d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 12226740a845SAlex Elder ceph_msg_revoke(req->r_request); 12233d14c5d2SYehuda Sadeh 12243d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1225bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 12264f23409eSIlya Dryomov if (list_empty(&req->r_linger_osd_item)) 12273d14c5d2SYehuda Sadeh req->r_osd = NULL; 12283d14c5d2SYehuda Sadeh } 12293d14c5d2SYehuda Sadeh 12307d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 12313d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 12323d14c5d2SYehuda Sadeh 12333d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 12343d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 12353d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 12363d14c5d2SYehuda Sadeh } 12373d14c5d2SYehuda Sadeh } 12383d14c5d2SYehuda Sadeh 12393d14c5d2SYehuda Sadeh /* 12403d14c5d2SYehuda Sadeh * Cancel a previously queued request message 12413d14c5d2SYehuda Sadeh */ 12423d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 12433d14c5d2SYehuda Sadeh { 12443d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 12456740a845SAlex Elder ceph_msg_revoke(req->r_request); 12463d14c5d2SYehuda Sadeh req->r_sent = 0; 12473d14c5d2SYehuda Sadeh } 12483d14c5d2SYehuda Sadeh } 12493d14c5d2SYehuda Sadeh 1250a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1251a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1252a40c4f10SYehuda Sadeh { 1253af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1254af593064SIlya Dryomov WARN_ON(!req->r_linger); 1255af593064SIlya Dryomov 125696e4dac6SAlex Elder ceph_osdc_get_request(req); 1257a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 12586194ea89SSage Weil if (req->r_osd) 12591d0326b1SIlya Dryomov list_add_tail(&req->r_linger_osd_item, 12606194ea89SSage Weil &req->r_osd->o_linger_requests); 1261a40c4f10SYehuda Sadeh } 1262a40c4f10SYehuda Sadeh 1263a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1264a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1265a40c4f10SYehuda Sadeh { 1266af593064SIlya Dryomov WARN_ON(!req->r_linger); 1267af593064SIlya Dryomov 1268af593064SIlya Dryomov if (list_empty(&req->r_linger_item)) { 1269af593064SIlya Dryomov dout("%s %p tid %llu not registered\n", __func__, req, 1270af593064SIlya Dryomov req->r_tid); 1271af593064SIlya Dryomov return; 1272af593064SIlya Dryomov } 1273af593064SIlya Dryomov 1274af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1275a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 1276af593064SIlya Dryomov 127761c74035SAlex Elder if (req->r_osd) { 12781d0326b1SIlya Dryomov list_del_init(&req->r_linger_osd_item); 1279bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 1280fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1281a40c4f10SYehuda Sadeh req->r_osd = NULL; 1282a40c4f10SYehuda Sadeh } 128396e4dac6SAlex Elder ceph_osdc_put_request(req); 1284a40c4f10SYehuda Sadeh } 1285a40c4f10SYehuda Sadeh 1286a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1287a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1288a40c4f10SYehuda Sadeh { 1289a40c4f10SYehuda Sadeh if (!req->r_linger) { 1290a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1291a40c4f10SYehuda Sadeh req->r_linger = 1; 1292a40c4f10SYehuda Sadeh } 1293a40c4f10SYehuda Sadeh } 1294a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1295a40c4f10SYehuda Sadeh 129663244fa1SIlya Dryomov static bool __pool_full(struct ceph_pg_pool_info *pi) 129763244fa1SIlya Dryomov { 129863244fa1SIlya Dryomov return pi->flags & CEPH_POOL_FLAG_FULL; 129963244fa1SIlya Dryomov } 130063244fa1SIlya Dryomov 13013d14c5d2SYehuda Sadeh /* 1302d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1303d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1304d29adb34SJosh Durgin * 1305d29adb34SJosh Durgin * Caller should hold map_sem for read. 1306d29adb34SJosh Durgin */ 130763244fa1SIlya Dryomov static bool target_should_be_paused(struct ceph_osd_client *osdc, 130863244fa1SIlya Dryomov const struct ceph_osd_request_target *t, 130963244fa1SIlya Dryomov struct ceph_pg_pool_info *pi) 131063244fa1SIlya Dryomov { 131163244fa1SIlya Dryomov bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 131263244fa1SIlya Dryomov bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 131363244fa1SIlya Dryomov ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 131463244fa1SIlya Dryomov __pool_full(pi); 131563244fa1SIlya Dryomov 131663244fa1SIlya Dryomov WARN_ON(pi->id != t->base_oloc.pool); 131763244fa1SIlya Dryomov return (t->flags & CEPH_OSD_FLAG_READ && pauserd) || 131863244fa1SIlya Dryomov (t->flags & CEPH_OSD_FLAG_WRITE && pausewr); 131963244fa1SIlya Dryomov } 132063244fa1SIlya Dryomov 132163244fa1SIlya Dryomov enum calc_target_result { 132263244fa1SIlya Dryomov CALC_TARGET_NO_ACTION = 0, 132363244fa1SIlya Dryomov CALC_TARGET_NEED_RESEND, 132463244fa1SIlya Dryomov CALC_TARGET_POOL_DNE, 132563244fa1SIlya Dryomov }; 132663244fa1SIlya Dryomov 132763244fa1SIlya Dryomov static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 132863244fa1SIlya Dryomov struct ceph_osd_request_target *t, 132963244fa1SIlya Dryomov u32 *last_force_resend, 133063244fa1SIlya Dryomov bool any_change) 133163244fa1SIlya Dryomov { 133263244fa1SIlya Dryomov struct ceph_pg_pool_info *pi; 133363244fa1SIlya Dryomov struct ceph_pg pgid, last_pgid; 133463244fa1SIlya Dryomov struct ceph_osds up, acting; 133563244fa1SIlya Dryomov bool force_resend = false; 133663244fa1SIlya Dryomov bool need_check_tiering = false; 133763244fa1SIlya Dryomov bool need_resend = false; 133863244fa1SIlya Dryomov bool sort_bitwise = ceph_osdmap_flag(osdc->osdmap, 133963244fa1SIlya Dryomov CEPH_OSDMAP_SORTBITWISE); 134063244fa1SIlya Dryomov enum calc_target_result ct_res; 134163244fa1SIlya Dryomov int ret; 134263244fa1SIlya Dryomov 134363244fa1SIlya Dryomov pi = ceph_pg_pool_by_id(osdc->osdmap, t->base_oloc.pool); 134463244fa1SIlya Dryomov if (!pi) { 134563244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 134663244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 134763244fa1SIlya Dryomov goto out; 134863244fa1SIlya Dryomov } 134963244fa1SIlya Dryomov 135063244fa1SIlya Dryomov if (osdc->osdmap->epoch == pi->last_force_request_resend) { 135163244fa1SIlya Dryomov if (last_force_resend && 135263244fa1SIlya Dryomov *last_force_resend < pi->last_force_request_resend) { 135363244fa1SIlya Dryomov *last_force_resend = pi->last_force_request_resend; 135463244fa1SIlya Dryomov force_resend = true; 135563244fa1SIlya Dryomov } else if (!last_force_resend) { 135663244fa1SIlya Dryomov force_resend = true; 135763244fa1SIlya Dryomov } 135863244fa1SIlya Dryomov } 135963244fa1SIlya Dryomov if (ceph_oid_empty(&t->target_oid) || force_resend) { 136063244fa1SIlya Dryomov ceph_oid_copy(&t->target_oid, &t->base_oid); 136163244fa1SIlya Dryomov need_check_tiering = true; 136263244fa1SIlya Dryomov } 136363244fa1SIlya Dryomov if (ceph_oloc_empty(&t->target_oloc) || force_resend) { 136463244fa1SIlya Dryomov ceph_oloc_copy(&t->target_oloc, &t->base_oloc); 136563244fa1SIlya Dryomov need_check_tiering = true; 136663244fa1SIlya Dryomov } 136763244fa1SIlya Dryomov 136863244fa1SIlya Dryomov if (need_check_tiering && 136963244fa1SIlya Dryomov (t->flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 137063244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_READ && pi->read_tier >= 0) 137163244fa1SIlya Dryomov t->target_oloc.pool = pi->read_tier; 137263244fa1SIlya Dryomov if (t->flags & CEPH_OSD_FLAG_WRITE && pi->write_tier >= 0) 137363244fa1SIlya Dryomov t->target_oloc.pool = pi->write_tier; 137463244fa1SIlya Dryomov } 137563244fa1SIlya Dryomov 137663244fa1SIlya Dryomov ret = ceph_object_locator_to_pg(osdc->osdmap, &t->target_oid, 137763244fa1SIlya Dryomov &t->target_oloc, &pgid); 137863244fa1SIlya Dryomov if (ret) { 137963244fa1SIlya Dryomov WARN_ON(ret != -ENOENT); 138063244fa1SIlya Dryomov t->osd = CEPH_HOMELESS_OSD; 138163244fa1SIlya Dryomov ct_res = CALC_TARGET_POOL_DNE; 138263244fa1SIlya Dryomov goto out; 138363244fa1SIlya Dryomov } 138463244fa1SIlya Dryomov last_pgid.pool = pgid.pool; 138563244fa1SIlya Dryomov last_pgid.seed = ceph_stable_mod(pgid.seed, t->pg_num, t->pg_num_mask); 138663244fa1SIlya Dryomov 138763244fa1SIlya Dryomov ceph_pg_to_up_acting_osds(osdc->osdmap, &pgid, &up, &acting); 138863244fa1SIlya Dryomov if (any_change && 138963244fa1SIlya Dryomov ceph_is_new_interval(&t->acting, 139063244fa1SIlya Dryomov &acting, 139163244fa1SIlya Dryomov &t->up, 139263244fa1SIlya Dryomov &up, 139363244fa1SIlya Dryomov t->size, 139463244fa1SIlya Dryomov pi->size, 139563244fa1SIlya Dryomov t->min_size, 139663244fa1SIlya Dryomov pi->min_size, 139763244fa1SIlya Dryomov t->pg_num, 139863244fa1SIlya Dryomov pi->pg_num, 139963244fa1SIlya Dryomov t->sort_bitwise, 140063244fa1SIlya Dryomov sort_bitwise, 140163244fa1SIlya Dryomov &last_pgid)) 140263244fa1SIlya Dryomov force_resend = true; 140363244fa1SIlya Dryomov 140463244fa1SIlya Dryomov if (t->paused && !target_should_be_paused(osdc, t, pi)) { 140563244fa1SIlya Dryomov t->paused = false; 140663244fa1SIlya Dryomov need_resend = true; 140763244fa1SIlya Dryomov } 140863244fa1SIlya Dryomov 140963244fa1SIlya Dryomov if (ceph_pg_compare(&t->pgid, &pgid) || 141063244fa1SIlya Dryomov ceph_osds_changed(&t->acting, &acting, any_change) || 141163244fa1SIlya Dryomov force_resend) { 141263244fa1SIlya Dryomov t->pgid = pgid; /* struct */ 141363244fa1SIlya Dryomov ceph_osds_copy(&t->acting, &acting); 141463244fa1SIlya Dryomov ceph_osds_copy(&t->up, &up); 141563244fa1SIlya Dryomov t->size = pi->size; 141663244fa1SIlya Dryomov t->min_size = pi->min_size; 141763244fa1SIlya Dryomov t->pg_num = pi->pg_num; 141863244fa1SIlya Dryomov t->pg_num_mask = pi->pg_num_mask; 141963244fa1SIlya Dryomov t->sort_bitwise = sort_bitwise; 142063244fa1SIlya Dryomov 142163244fa1SIlya Dryomov t->osd = acting.primary; 142263244fa1SIlya Dryomov need_resend = true; 142363244fa1SIlya Dryomov } 142463244fa1SIlya Dryomov 142563244fa1SIlya Dryomov ct_res = need_resend ? CALC_TARGET_NEED_RESEND : CALC_TARGET_NO_ACTION; 142663244fa1SIlya Dryomov out: 142763244fa1SIlya Dryomov dout("%s t %p -> ct_res %d osd %d\n", __func__, t, ct_res, t->osd); 142863244fa1SIlya Dryomov return ct_res; 142963244fa1SIlya Dryomov } 143063244fa1SIlya Dryomov 1431f671b581SIlya Dryomov static void __enqueue_request(struct ceph_osd_request *req) 1432f671b581SIlya Dryomov { 1433f671b581SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 1434f671b581SIlya Dryomov 1435f671b581SIlya Dryomov dout("%s %p tid %llu to osd%d\n", __func__, req, req->r_tid, 1436f671b581SIlya Dryomov req->r_osd ? req->r_osd->o_osd : -1); 1437f671b581SIlya Dryomov 1438f671b581SIlya Dryomov if (req->r_osd) { 1439f671b581SIlya Dryomov __remove_osd_from_lru(req->r_osd); 1440f671b581SIlya Dryomov list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1441f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 1442f671b581SIlya Dryomov } else { 1443f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 1444f671b581SIlya Dryomov } 1445f671b581SIlya Dryomov } 1446f671b581SIlya Dryomov 144717a13e40SIlya Dryomov /* 14483d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 14493d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 145025985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 14516f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 14523d14c5d2SYehuda Sadeh * 14533d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 14543d14c5d2SYehuda Sadeh * 14553d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 14563d14c5d2SYehuda Sadeh */ 14576f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 145838d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 14593d14c5d2SYehuda Sadeh { 1460a66dd383SIlya Dryomov enum calc_target_result ct_res; 14613d14c5d2SYehuda Sadeh int err; 14623d14c5d2SYehuda Sadeh 14636f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 146417a13e40SIlya Dryomov 1465a66dd383SIlya Dryomov ct_res = calc_target(osdc, &req->r_t, NULL, force_resend); 1466a66dd383SIlya Dryomov switch (ct_res) { 1467a66dd383SIlya Dryomov case CALC_TARGET_POOL_DNE: 14686f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 1469a66dd383SIlya Dryomov return -EIO; 1470a66dd383SIlya Dryomov case CALC_TARGET_NO_ACTION: 14713d14c5d2SYehuda Sadeh return 0; /* no change */ 1472a66dd383SIlya Dryomov default: 1473a66dd383SIlya Dryomov BUG_ON(ct_res != CALC_TARGET_NEED_RESEND); 1474a66dd383SIlya Dryomov } 14753d14c5d2SYehuda Sadeh 14765b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 1477a66dd383SIlya Dryomov req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, req->r_t.osd, 14783d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 14793d14c5d2SYehuda Sadeh 14803d14c5d2SYehuda Sadeh if (req->r_osd) { 14813d14c5d2SYehuda Sadeh __cancel_request(req); 14823d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1483a390de02SIlya Dryomov list_del_init(&req->r_linger_osd_item); 14843d14c5d2SYehuda Sadeh req->r_osd = NULL; 14853d14c5d2SYehuda Sadeh } 14863d14c5d2SYehuda Sadeh 1487a66dd383SIlya Dryomov req->r_osd = lookup_osd(&osdc->osds, req->r_t.osd); 1488a66dd383SIlya Dryomov if (!req->r_osd && req->r_t.osd >= 0) { 14893d14c5d2SYehuda Sadeh err = -ENOMEM; 1490a66dd383SIlya Dryomov req->r_osd = create_osd(osdc, req->r_t.osd); 14916f6c7006SSage Weil if (!req->r_osd) { 14926f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 14933d14c5d2SYehuda Sadeh goto out; 14946f6c7006SSage Weil } 14953d14c5d2SYehuda Sadeh 14966f3bfd45SIlya Dryomov dout("map_request osd %p is osd%d\n", req->r_osd, 1497a66dd383SIlya Dryomov req->r_osd->o_osd); 1498fcd00b68SIlya Dryomov insert_osd(&osdc->osds, req->r_osd); 14993d14c5d2SYehuda Sadeh 1500b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1501a66dd383SIlya Dryomov CEPH_ENTITY_TYPE_OSD, req->r_osd->o_osd, 1502a66dd383SIlya Dryomov &osdc->osdmap->osd_addr[req->r_osd->o_osd]); 15033d14c5d2SYehuda Sadeh } 15043d14c5d2SYehuda Sadeh 1505f671b581SIlya Dryomov __enqueue_request(req); 15063d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 15073d14c5d2SYehuda Sadeh 15083d14c5d2SYehuda Sadeh out: 15093d14c5d2SYehuda Sadeh return err; 15103d14c5d2SYehuda Sadeh } 15113d14c5d2SYehuda Sadeh 15123d14c5d2SYehuda Sadeh /* 15133d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 15143d14c5d2SYehuda Sadeh */ 151556e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 15163d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 15173d14c5d2SYehuda Sadeh { 15181b83bef2SSage Weil void *p; 15193d14c5d2SYehuda Sadeh 15201b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 15211b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 1522a66dd383SIlya Dryomov req->r_t.pgid.pool, req->r_t.pgid.seed); 15233d14c5d2SYehuda Sadeh 15241b83bef2SSage Weil /* fill in message content that changes each time we send it */ 15251b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 15261b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 1527a66dd383SIlya Dryomov put_unaligned_le64(req->r_t.target_oloc.pool, req->r_request_pool); 15281b83bef2SSage Weil p = req->r_request_pgid; 1529a66dd383SIlya Dryomov ceph_encode_64(&p, req->r_t.pgid.pool); 1530a66dd383SIlya Dryomov ceph_encode_32(&p, req->r_t.pgid.seed); 15311b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 15321b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 15331b83bef2SSage Weil sizeof(req->r_reassert_version)); 15342169aea6SSage Weil 15353d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 15363d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 15373d14c5d2SYehuda Sadeh 15383d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 153926be8808SAlex Elder 15403d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 154126be8808SAlex Elder 154226be8808SAlex Elder ceph_con_send(&req->r_osd->o_con, req->r_request); 15433d14c5d2SYehuda Sadeh } 15443d14c5d2SYehuda Sadeh 15453d14c5d2SYehuda Sadeh /* 15466f6c7006SSage Weil * Send any requests in the queue (req_unsent). 15476f6c7006SSage Weil */ 1548f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 15496f6c7006SSage Weil { 15506f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 15516f6c7006SSage Weil 1552f9d25199SAlex Elder dout("__send_queued\n"); 1553f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 15546f6c7006SSage Weil __send_request(osdc, req); 15556f6c7006SSage Weil } 15566f6c7006SSage Weil 15576f6c7006SSage Weil /* 15580bbfdfe8SIlya Dryomov * Caller should hold map_sem for read and request_mutex. 15590bbfdfe8SIlya Dryomov */ 15600bbfdfe8SIlya Dryomov static int __ceph_osdc_start_request(struct ceph_osd_client *osdc, 15610bbfdfe8SIlya Dryomov struct ceph_osd_request *req, 15620bbfdfe8SIlya Dryomov bool nofail) 15630bbfdfe8SIlya Dryomov { 15640bbfdfe8SIlya Dryomov int rc; 15650bbfdfe8SIlya Dryomov 15660bbfdfe8SIlya Dryomov __register_request(osdc, req); 15670bbfdfe8SIlya Dryomov req->r_sent = 0; 15680bbfdfe8SIlya Dryomov req->r_got_reply = 0; 15690bbfdfe8SIlya Dryomov rc = __map_request(osdc, req, 0); 15700bbfdfe8SIlya Dryomov if (rc < 0) { 15710bbfdfe8SIlya Dryomov if (nofail) { 15720bbfdfe8SIlya Dryomov dout("osdc_start_request failed map, " 15730bbfdfe8SIlya Dryomov " will retry %lld\n", req->r_tid); 15740bbfdfe8SIlya Dryomov rc = 0; 15750bbfdfe8SIlya Dryomov } else { 15760bbfdfe8SIlya Dryomov __unregister_request(osdc, req); 15770bbfdfe8SIlya Dryomov } 15780bbfdfe8SIlya Dryomov return rc; 15790bbfdfe8SIlya Dryomov } 15800bbfdfe8SIlya Dryomov 15810bbfdfe8SIlya Dryomov if (req->r_osd == NULL) { 15820bbfdfe8SIlya Dryomov dout("send_request %p no up osds in pg\n", req); 15830bbfdfe8SIlya Dryomov ceph_monc_request_next_osdmap(&osdc->client->monc); 15840bbfdfe8SIlya Dryomov } else { 15850bbfdfe8SIlya Dryomov __send_queued(osdc); 15860bbfdfe8SIlya Dryomov } 15870bbfdfe8SIlya Dryomov 15880bbfdfe8SIlya Dryomov return 0; 15890bbfdfe8SIlya Dryomov } 15900bbfdfe8SIlya Dryomov 15910bbfdfe8SIlya Dryomov /* 15923d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 15933d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 15943d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 15953d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 15963d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 15973d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 15983d14c5d2SYehuda Sadeh * there are no open requests). 15993d14c5d2SYehuda Sadeh */ 16003d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 16013d14c5d2SYehuda Sadeh { 16023d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 16033d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 1604a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 160583aff95eSSage Weil struct ceph_osd_request *req; 16063d14c5d2SYehuda Sadeh struct ceph_osd *osd; 16073d14c5d2SYehuda Sadeh struct list_head slow_osds; 16083d14c5d2SYehuda Sadeh dout("timeout\n"); 16093d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 16103d14c5d2SYehuda Sadeh 16113d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 16123d14c5d2SYehuda Sadeh 16133d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 16143d14c5d2SYehuda Sadeh 16153d14c5d2SYehuda Sadeh /* 16163d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 16173d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 16183d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 16193d14c5d2SYehuda Sadeh */ 16203d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 16213d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 1622a319bf56SIlya Dryomov if (time_before(jiffies, 1623a319bf56SIlya Dryomov req->r_stamp + opts->osd_keepalive_timeout)) 16243d14c5d2SYehuda Sadeh break; 16253d14c5d2SYehuda Sadeh 16263d14c5d2SYehuda Sadeh osd = req->r_osd; 16273d14c5d2SYehuda Sadeh BUG_ON(!osd); 16283d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 16293d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 16303d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 16313d14c5d2SYehuda Sadeh } 16323d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 16333d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 16343d14c5d2SYehuda Sadeh o_keepalive_item); 16353d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 16363d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 16373d14c5d2SYehuda Sadeh } 16383d14c5d2SYehuda Sadeh 16393d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1640f9d25199SAlex Elder __send_queued(osdc); 16413d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 16423d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16433d14c5d2SYehuda Sadeh } 16443d14c5d2SYehuda Sadeh 16453d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 16463d14c5d2SYehuda Sadeh { 16473d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 16483d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 16493d14c5d2SYehuda Sadeh osds_timeout_work.work); 1650a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 165142a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 16523d14c5d2SYehuda Sadeh 165342a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 16543d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 165542a2c09fSIlya Dryomov mutex_lock(&osdc->request_mutex); 16563d14c5d2SYehuda Sadeh 165742a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 165842a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 165942a2c09fSIlya Dryomov break; 166042a2c09fSIlya Dryomov 166142a2c09fSIlya Dryomov remove_osd(osdc, osd); 166242a2c09fSIlya Dryomov } 166342a2c09fSIlya Dryomov 166442a2c09fSIlya Dryomov mutex_unlock(&osdc->request_mutex); 166542a2c09fSIlya Dryomov up_read(&osdc->map_sem); 16663d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 16673d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 16683d14c5d2SYehuda Sadeh } 16693d14c5d2SYehuda Sadeh 1670205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 1671205ee118SIlya Dryomov struct ceph_object_locator *oloc) 1672205ee118SIlya Dryomov { 1673205ee118SIlya Dryomov u8 struct_v, struct_cv; 1674205ee118SIlya Dryomov u32 len; 1675205ee118SIlya Dryomov void *struct_end; 1676205ee118SIlya Dryomov int ret = 0; 1677205ee118SIlya Dryomov 1678205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1679205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1680205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1681205ee118SIlya Dryomov if (struct_v < 3) { 1682205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 1683205ee118SIlya Dryomov struct_v, struct_cv); 1684205ee118SIlya Dryomov goto e_inval; 1685205ee118SIlya Dryomov } 1686205ee118SIlya Dryomov if (struct_cv > 6) { 1687205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 1688205ee118SIlya Dryomov struct_v, struct_cv); 1689205ee118SIlya Dryomov goto e_inval; 1690205ee118SIlya Dryomov } 1691205ee118SIlya Dryomov len = ceph_decode_32(p); 1692205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1693205ee118SIlya Dryomov struct_end = *p + len; 1694205ee118SIlya Dryomov 1695205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 1696205ee118SIlya Dryomov *p += 4; /* skip preferred */ 1697205ee118SIlya Dryomov 1698205ee118SIlya Dryomov len = ceph_decode_32(p); 1699205ee118SIlya Dryomov if (len > 0) { 1700205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 1701205ee118SIlya Dryomov goto e_inval; 1702205ee118SIlya Dryomov } 1703205ee118SIlya Dryomov 1704205ee118SIlya Dryomov if (struct_v >= 5) { 1705205ee118SIlya Dryomov len = ceph_decode_32(p); 1706205ee118SIlya Dryomov if (len > 0) { 1707205ee118SIlya Dryomov pr_warn("ceph_object_locator::nspace is set\n"); 1708205ee118SIlya Dryomov goto e_inval; 1709205ee118SIlya Dryomov } 1710205ee118SIlya Dryomov } 1711205ee118SIlya Dryomov 1712205ee118SIlya Dryomov if (struct_v >= 6) { 1713205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 1714205ee118SIlya Dryomov if (hash != -1) { 1715205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 1716205ee118SIlya Dryomov goto e_inval; 1717205ee118SIlya Dryomov } 1718205ee118SIlya Dryomov } 1719205ee118SIlya Dryomov 1720205ee118SIlya Dryomov /* skip the rest */ 1721205ee118SIlya Dryomov *p = struct_end; 1722205ee118SIlya Dryomov out: 1723205ee118SIlya Dryomov return ret; 1724205ee118SIlya Dryomov 1725205ee118SIlya Dryomov e_inval: 1726205ee118SIlya Dryomov ret = -EINVAL; 1727205ee118SIlya Dryomov goto out; 1728205ee118SIlya Dryomov } 1729205ee118SIlya Dryomov 1730205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 1731205ee118SIlya Dryomov struct ceph_request_redirect *redir) 1732205ee118SIlya Dryomov { 1733205ee118SIlya Dryomov u8 struct_v, struct_cv; 1734205ee118SIlya Dryomov u32 len; 1735205ee118SIlya Dryomov void *struct_end; 1736205ee118SIlya Dryomov int ret; 1737205ee118SIlya Dryomov 1738205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1739205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1740205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1741205ee118SIlya Dryomov if (struct_cv > 1) { 1742205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 1743205ee118SIlya Dryomov struct_v, struct_cv); 1744205ee118SIlya Dryomov goto e_inval; 1745205ee118SIlya Dryomov } 1746205ee118SIlya Dryomov len = ceph_decode_32(p); 1747205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1748205ee118SIlya Dryomov struct_end = *p + len; 1749205ee118SIlya Dryomov 1750205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 1751205ee118SIlya Dryomov if (ret) 1752205ee118SIlya Dryomov goto out; 1753205ee118SIlya Dryomov 1754205ee118SIlya Dryomov len = ceph_decode_32(p); 1755205ee118SIlya Dryomov if (len > 0) { 1756205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 1757205ee118SIlya Dryomov goto e_inval; 1758205ee118SIlya Dryomov } 1759205ee118SIlya Dryomov 1760205ee118SIlya Dryomov len = ceph_decode_32(p); 1761205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 1762205ee118SIlya Dryomov 1763205ee118SIlya Dryomov /* skip the rest */ 1764205ee118SIlya Dryomov *p = struct_end; 1765205ee118SIlya Dryomov out: 1766205ee118SIlya Dryomov return ret; 1767205ee118SIlya Dryomov 1768205ee118SIlya Dryomov e_inval: 1769205ee118SIlya Dryomov ret = -EINVAL; 1770205ee118SIlya Dryomov goto out; 1771205ee118SIlya Dryomov } 1772205ee118SIlya Dryomov 177325845472SSage Weil static void complete_request(struct ceph_osd_request *req) 177425845472SSage Weil { 177525845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 177625845472SSage Weil } 177725845472SSage Weil 17783d14c5d2SYehuda Sadeh /* 17793d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 17803d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 17813d14c5d2SYehuda Sadeh */ 178270cf052dSShraddha Barke static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg) 17833d14c5d2SYehuda Sadeh { 17841b83bef2SSage Weil void *p, *end; 17853d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1786205ee118SIlya Dryomov struct ceph_request_redirect redir; 17873d14c5d2SYehuda Sadeh u64 tid; 17881b83bef2SSage Weil int object_len; 178979528734SAlex Elder unsigned int numops; 179079528734SAlex Elder int payload_len, flags; 17913d14c5d2SYehuda Sadeh s32 result; 17921b83bef2SSage Weil s32 retry_attempt; 17931b83bef2SSage Weil struct ceph_pg pg; 17941b83bef2SSage Weil int err; 17951b83bef2SSage Weil u32 reassert_epoch; 17961b83bef2SSage Weil u64 reassert_version; 17971b83bef2SSage Weil u32 osdmap_epoch; 17980d5af164SAlex Elder int already_completed; 17999fc6e064SAlex Elder u32 bytes; 1800b0b31a8fSIlya Dryomov u8 decode_redir; 180179528734SAlex Elder unsigned int i; 18023d14c5d2SYehuda Sadeh 18033d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 18041b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 18051b83bef2SSage Weil 18061b83bef2SSage Weil p = msg->front.iov_base; 18071b83bef2SSage Weil end = p + msg->front.iov_len; 18081b83bef2SSage Weil 18091b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 18101b83bef2SSage Weil object_len = ceph_decode_32(&p); 18111b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 18121b83bef2SSage Weil p += object_len; 18131b83bef2SSage Weil 1814ef4859d6SAlex Elder err = ceph_decode_pgid(&p, end, &pg); 18151b83bef2SSage Weil if (err) 18163d14c5d2SYehuda Sadeh goto bad; 18171b83bef2SSage Weil 18181b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 18191b83bef2SSage Weil flags = ceph_decode_64(&p); 18201b83bef2SSage Weil result = ceph_decode_32(&p); 18211b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 18221b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 18231b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 18241b83bef2SSage Weil 18253d14c5d2SYehuda Sadeh /* lookup */ 1826ff513aceSIlya Dryomov down_read(&osdc->map_sem); 18273d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1828fcd00b68SIlya Dryomov req = lookup_request(&osdc->requests, tid); 18293d14c5d2SYehuda Sadeh if (req == NULL) { 18303d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 18318058fd45SAlex Elder goto bad_mutex; 18323d14c5d2SYehuda Sadeh } 18333d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 18341b83bef2SSage Weil 18351b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 18361b83bef2SSage Weil req, result); 18371b83bef2SSage Weil 183818741196SDan Carpenter ceph_decode_need(&p, end, 4, bad_put); 18391b83bef2SSage Weil numops = ceph_decode_32(&p); 18403f1af42aSIlya Dryomov if (numops > CEPH_OSD_MAX_OPS) 18411b83bef2SSage Weil goto bad_put; 18421b83bef2SSage Weil if (numops != req->r_num_ops) 18431b83bef2SSage Weil goto bad_put; 18441b83bef2SSage Weil payload_len = 0; 184518741196SDan Carpenter ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put); 18461b83bef2SSage Weil for (i = 0; i < numops; i++) { 18471b83bef2SSage Weil struct ceph_osd_op *op = p; 18481b83bef2SSage Weil int len; 18491b83bef2SSage Weil 18501b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 18517665d85bSYan, Zheng req->r_ops[i].outdata_len = len; 18521b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 18531b83bef2SSage Weil payload_len += len; 18541b83bef2SSage Weil p += sizeof(*op); 18551b83bef2SSage Weil } 18569fc6e064SAlex Elder bytes = le32_to_cpu(msg->hdr.data_len); 18579fc6e064SAlex Elder if (payload_len != bytes) { 1858b9a67899SJoe Perches pr_warn("sum of op payload lens %d != data_len %d\n", 18599fc6e064SAlex Elder payload_len, bytes); 18601b83bef2SSage Weil goto bad_put; 18611b83bef2SSage Weil } 18621b83bef2SSage Weil 186318741196SDan Carpenter ceph_decode_need(&p, end, 4 + numops * 4, bad_put); 18641b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 18651b83bef2SSage Weil for (i = 0; i < numops; i++) 18667665d85bSYan, Zheng req->r_ops[i].rval = ceph_decode_32(&p); 18673d14c5d2SYehuda Sadeh 1868205ee118SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 6) { 1869205ee118SIlya Dryomov p += 8 + 4; /* skip replay_version */ 1870205ee118SIlya Dryomov p += 8; /* skip user_version */ 1871205ee118SIlya Dryomov 1872b0b31a8fSIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 7) 1873b0b31a8fSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, bad_put); 1874b0b31a8fSIlya Dryomov else 1875b0b31a8fSIlya Dryomov decode_redir = 1; 1876b0b31a8fSIlya Dryomov } else { 1877b0b31a8fSIlya Dryomov decode_redir = 0; 1878b0b31a8fSIlya Dryomov } 1879b0b31a8fSIlya Dryomov 1880b0b31a8fSIlya Dryomov if (decode_redir) { 1881205ee118SIlya Dryomov err = ceph_redirect_decode(&p, end, &redir); 1882205ee118SIlya Dryomov if (err) 1883205ee118SIlya Dryomov goto bad_put; 1884205ee118SIlya Dryomov } else { 1885205ee118SIlya Dryomov redir.oloc.pool = -1; 1886205ee118SIlya Dryomov } 1887205ee118SIlya Dryomov 188863244fa1SIlya Dryomov if (!ceph_oloc_empty(&redir.oloc)) { 1889205ee118SIlya Dryomov dout("redirect pool %lld\n", redir.oloc.pool); 1890205ee118SIlya Dryomov 1891205ee118SIlya Dryomov __unregister_request(osdc, req); 1892205ee118SIlya Dryomov 1893a66dd383SIlya Dryomov ceph_oloc_copy(&req->r_t.target_oloc, &redir.oloc); 1894205ee118SIlya Dryomov 1895205ee118SIlya Dryomov /* 1896205ee118SIlya Dryomov * Start redirect requests with nofail=true. If 1897205ee118SIlya Dryomov * mapping fails, request will end up on the notarget 1898205ee118SIlya Dryomov * list, waiting for the new osdmap (which can take 1899205ee118SIlya Dryomov * a while), even though the original request mapped 1900205ee118SIlya Dryomov * successfully. In the future we might want to follow 1901205ee118SIlya Dryomov * original request's nofail setting here. 1902205ee118SIlya Dryomov */ 1903ff513aceSIlya Dryomov err = __ceph_osdc_start_request(osdc, req, true); 1904205ee118SIlya Dryomov BUG_ON(err); 1905205ee118SIlya Dryomov 1906ff513aceSIlya Dryomov goto out_unlock; 1907205ee118SIlya Dryomov } 1908205ee118SIlya Dryomov 1909eb845ff1SYan, Zheng already_completed = req->r_got_reply; 19103d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 19111b83bef2SSage Weil req->r_result = result; 19123d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 19133d14c5d2SYehuda Sadeh bytes); 19143d14c5d2SYehuda Sadeh if (req->r_result == 0) 19153d14c5d2SYehuda Sadeh req->r_result = bytes; 19163d14c5d2SYehuda Sadeh 19173d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 19181b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 19191b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 19203d14c5d2SYehuda Sadeh 19213d14c5d2SYehuda Sadeh req->r_got_reply = 1; 19223d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 19233d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 1924ff513aceSIlya Dryomov goto out_unlock; 19253d14c5d2SYehuda Sadeh } 19263d14c5d2SYehuda Sadeh 19273d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 19283d14c5d2SYehuda Sadeh 1929a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1930a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1931a40c4f10SYehuda Sadeh 19323d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 19333d14c5d2SYehuda Sadeh if (result < 0 || 19343d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 19353d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 19363d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 19373d14c5d2SYehuda Sadeh 19383d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1939ff513aceSIlya Dryomov up_read(&osdc->map_sem); 19403d14c5d2SYehuda Sadeh 1941eb845ff1SYan, Zheng if (!already_completed) { 194261c5d6bfSYan, Zheng if (req->r_unsafe_callback && 194361c5d6bfSYan, Zheng result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK)) 194461c5d6bfSYan, Zheng req->r_unsafe_callback(req, true); 19453d14c5d2SYehuda Sadeh if (req->r_callback) 19463d14c5d2SYehuda Sadeh req->r_callback(req, msg); 19473d14c5d2SYehuda Sadeh else 19483d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 1949eb845ff1SYan, Zheng } 19503d14c5d2SYehuda Sadeh 195161c5d6bfSYan, Zheng if (flags & CEPH_OSD_FLAG_ONDISK) { 195261c5d6bfSYan, Zheng if (req->r_unsafe_callback && already_completed) 195361c5d6bfSYan, Zheng req->r_unsafe_callback(req, false); 195425845472SSage Weil complete_request(req); 195561c5d6bfSYan, Zheng } 19563d14c5d2SYehuda Sadeh 1957ff513aceSIlya Dryomov out: 1958a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 19593d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 19603d14c5d2SYehuda Sadeh return; 1961ff513aceSIlya Dryomov out_unlock: 1962ff513aceSIlya Dryomov mutex_unlock(&osdc->request_mutex); 1963ff513aceSIlya Dryomov up_read(&osdc->map_sem); 1964ff513aceSIlya Dryomov goto out; 19653d14c5d2SYehuda Sadeh 19661b83bef2SSage Weil bad_put: 196737c89bdeSLi Wang req->r_result = -EIO; 196837c89bdeSLi Wang __unregister_request(osdc, req); 196937c89bdeSLi Wang if (req->r_callback) 197037c89bdeSLi Wang req->r_callback(req, msg); 197137c89bdeSLi Wang else 197237c89bdeSLi Wang complete_all(&req->r_completion); 197337c89bdeSLi Wang complete_request(req); 19741b83bef2SSage Weil ceph_osdc_put_request(req); 19758058fd45SAlex Elder bad_mutex: 19768058fd45SAlex Elder mutex_unlock(&osdc->request_mutex); 1977ff513aceSIlya Dryomov up_read(&osdc->map_sem); 19783d14c5d2SYehuda Sadeh bad: 19791b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 19801b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 19813d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 19823d14c5d2SYehuda Sadeh } 19833d14c5d2SYehuda Sadeh 19846f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 19853d14c5d2SYehuda Sadeh { 19863d14c5d2SYehuda Sadeh struct rb_node *p, *n; 19873d14c5d2SYehuda Sadeh 19887eb71e03SIlya Dryomov dout("%s %p\n", __func__, osdc); 19893d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 19906f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 19913d14c5d2SYehuda Sadeh 19923d14c5d2SYehuda Sadeh n = rb_next(p); 19933d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 19943d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 19953d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 19963d14c5d2SYehuda Sadeh osd->o_osd), 19973d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 19983d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 19993d14c5d2SYehuda Sadeh } 20003d14c5d2SYehuda Sadeh } 20013d14c5d2SYehuda Sadeh 20023d14c5d2SYehuda Sadeh /* 20036f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 20046f6c7006SSage Weil * no osd, request a new map. 20053d14c5d2SYehuda Sadeh * 2006e6d50f67SAlex Elder * Caller should hold map_sem for read. 20073d14c5d2SYehuda Sadeh */ 20089a1ea2dbSJosh Durgin static void kick_requests(struct ceph_osd_client *osdc, bool force_resend, 20099a1ea2dbSJosh Durgin bool force_resend_writes) 20103d14c5d2SYehuda Sadeh { 2011a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 20126f6c7006SSage Weil struct rb_node *p; 20136f6c7006SSage Weil int needmap = 0; 20146f6c7006SSage Weil int err; 20159a1ea2dbSJosh Durgin bool force_resend_req; 20163d14c5d2SYehuda Sadeh 20179a1ea2dbSJosh Durgin dout("kick_requests %s %s\n", force_resend ? " (force resend)" : "", 20189a1ea2dbSJosh Durgin force_resend_writes ? " (force resend writes)" : ""); 20193d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 20206194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 20216f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 20226194ea89SSage Weil p = rb_next(p); 2023ab60b16dSAlex Elder 2024ab60b16dSAlex Elder /* 2025ab60b16dSAlex Elder * For linger requests that have not yet been 2026ab60b16dSAlex Elder * registered, move them to the linger list; they'll 2027ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 2028ab60b16dSAlex Elder * the request before re-registering it as a linger 2029ab60b16dSAlex Elder * request to ensure the __map_request() below 2030ab60b16dSAlex Elder * will decide it needs to be sent. 2031ab60b16dSAlex Elder */ 2032ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 2033ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 2034ab60b16dSAlex Elder req, req->r_tid, 2035ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 203696e4dac6SAlex Elder ceph_osdc_get_request(req); 2037ab60b16dSAlex Elder __unregister_request(osdc, req); 2038ab60b16dSAlex Elder __register_linger_request(osdc, req); 203996e4dac6SAlex Elder ceph_osdc_put_request(req); 2040ab60b16dSAlex Elder continue; 2041ab60b16dSAlex Elder } 2042ab60b16dSAlex Elder 20439a1ea2dbSJosh Durgin force_resend_req = force_resend || 20449a1ea2dbSJosh Durgin (force_resend_writes && 20459a1ea2dbSJosh Durgin req->r_flags & CEPH_OSD_FLAG_WRITE); 20469a1ea2dbSJosh Durgin err = __map_request(osdc, req, force_resend_req); 20476f6c7006SSage Weil if (err < 0) 20486f6c7006SSage Weil continue; /* error */ 20496f6c7006SSage Weil if (req->r_osd == NULL) { 20506f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 20516f6c7006SSage Weil needmap++; /* request a newer map */ 20526f6c7006SSage Weil } else if (err > 0) { 20536194ea89SSage Weil if (!req->r_linger) { 20546194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 20556194ea89SSage Weil req->r_tid, 20566f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 20576f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 20586f6c7006SSage Weil } 20596f6c7006SSage Weil } 20606194ea89SSage Weil } 2061a40c4f10SYehuda Sadeh 2062a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 2063a40c4f10SYehuda Sadeh r_linger_item) { 2064a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 2065a40c4f10SYehuda Sadeh 20669a1ea2dbSJosh Durgin err = __map_request(osdc, req, 20679a1ea2dbSJosh Durgin force_resend || force_resend_writes); 2068ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 2069a40c4f10SYehuda Sadeh if (err < 0) 2070a40c4f10SYehuda Sadeh continue; /* hrm! */ 2071b0494532SIlya Dryomov if (req->r_osd == NULL || err > 0) { 2072a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 2073b0494532SIlya Dryomov dout("lingering %p tid %llu maps to no osd\n", 2074b0494532SIlya Dryomov req, req->r_tid); 2075b0494532SIlya Dryomov /* 2076b0494532SIlya Dryomov * A homeless lingering request makes 2077b0494532SIlya Dryomov * no sense, as it's job is to keep 2078b0494532SIlya Dryomov * a particular OSD connection open. 2079b0494532SIlya Dryomov * Request a newer map and kick the 2080b0494532SIlya Dryomov * request, knowing that it won't be 2081b0494532SIlya Dryomov * resent until we actually get a map 2082b0494532SIlya Dryomov * that can tell us where to send it. 2083b0494532SIlya Dryomov */ 2084b0494532SIlya Dryomov needmap++; 2085a40c4f10SYehuda Sadeh } 2086a40c4f10SYehuda Sadeh 2087b0494532SIlya Dryomov dout("kicking lingering %p tid %llu osd%d\n", req, 2088b0494532SIlya Dryomov req->r_tid, req->r_osd ? req->r_osd->o_osd : -1); 2089a40c4f10SYehuda Sadeh __register_request(osdc, req); 2090c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 2091a40c4f10SYehuda Sadeh } 2092b0494532SIlya Dryomov } 209314d2f38dSAlex Elder reset_changed_osds(osdc); 20943d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 20953d14c5d2SYehuda Sadeh 20963d14c5d2SYehuda Sadeh if (needmap) { 20973d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 20983d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 20993d14c5d2SYehuda Sadeh } 21003d14c5d2SYehuda Sadeh } 21016f6c7006SSage Weil 21026f6c7006SSage Weil 21033d14c5d2SYehuda Sadeh /* 21043d14c5d2SYehuda Sadeh * Process updated osd map. 21053d14c5d2SYehuda Sadeh * 21063d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 21073d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 21083d14c5d2SYehuda Sadeh * off to different OSDs as needed. 21093d14c5d2SYehuda Sadeh */ 21103d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 21113d14c5d2SYehuda Sadeh { 21123d14c5d2SYehuda Sadeh void *p, *end, *next; 21133d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 21143d14c5d2SYehuda Sadeh u32 epoch; 21153d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 21163d14c5d2SYehuda Sadeh int err; 21173d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 21189a1ea2dbSJosh Durgin bool was_full; 21193d14c5d2SYehuda Sadeh 21203d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 21213d14c5d2SYehuda Sadeh p = msg->front.iov_base; 21223d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 21233d14c5d2SYehuda Sadeh 21243d14c5d2SYehuda Sadeh /* verify fsid */ 21253d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 21263d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 21273d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 21283d14c5d2SYehuda Sadeh return; 21293d14c5d2SYehuda Sadeh 21303d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 21313d14c5d2SYehuda Sadeh 21329a1ea2dbSJosh Durgin was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 21339a1ea2dbSJosh Durgin 21343d14c5d2SYehuda Sadeh /* incremental maps */ 21353d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 21363d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 21373d14c5d2SYehuda Sadeh while (nr_maps > 0) { 21383d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 21393d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 21403d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 21413d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 21423d14c5d2SYehuda Sadeh next = p + maplen; 21433d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 21443d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 21453d14c5d2SYehuda Sadeh epoch, maplen); 21463d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 21470c0a8de1SIlya Dryomov osdc->osdmap); 21483d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 21493d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 21503d14c5d2SYehuda Sadeh goto bad; 21513d14c5d2SYehuda Sadeh } 21523d14c5d2SYehuda Sadeh BUG_ON(!newmap); 21533d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 21543d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 21553d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 21563d14c5d2SYehuda Sadeh } 21579a1ea2dbSJosh Durgin was_full = was_full || 21589a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 21599a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 21609a1ea2dbSJosh Durgin kick_requests(osdc, 0, was_full); 21613d14c5d2SYehuda Sadeh } else { 21623d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 21633d14c5d2SYehuda Sadeh epoch, maplen); 21643d14c5d2SYehuda Sadeh } 21653d14c5d2SYehuda Sadeh p = next; 21663d14c5d2SYehuda Sadeh nr_maps--; 21673d14c5d2SYehuda Sadeh } 21683d14c5d2SYehuda Sadeh if (newmap) 21693d14c5d2SYehuda Sadeh goto done; 21703d14c5d2SYehuda Sadeh 21713d14c5d2SYehuda Sadeh /* full maps */ 21723d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 21733d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 21743d14c5d2SYehuda Sadeh while (nr_maps) { 21753d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 21763d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 21773d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 21783d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 21793d14c5d2SYehuda Sadeh if (nr_maps > 1) { 21803d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 21813d14c5d2SYehuda Sadeh epoch, maplen); 21823d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 21833d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 21843d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 21853d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 21863d14c5d2SYehuda Sadeh } else { 218738d6453cSSage Weil int skipped_map = 0; 218838d6453cSSage Weil 21893d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 2190a2505d63SIlya Dryomov newmap = ceph_osdmap_decode(&p, p+maplen); 21913d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 21923d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 21933d14c5d2SYehuda Sadeh goto bad; 21943d14c5d2SYehuda Sadeh } 21953d14c5d2SYehuda Sadeh BUG_ON(!newmap); 21963d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 21973d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 219838d6453cSSage Weil if (oldmap) { 219938d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 220038d6453cSSage Weil skipped_map = 1; 22013d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 220238d6453cSSage Weil } 22039a1ea2dbSJosh Durgin was_full = was_full || 22049a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 22059a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 22069a1ea2dbSJosh Durgin kick_requests(osdc, skipped_map, was_full); 22073d14c5d2SYehuda Sadeh } 22083d14c5d2SYehuda Sadeh p += maplen; 22093d14c5d2SYehuda Sadeh nr_maps--; 22103d14c5d2SYehuda Sadeh } 22113d14c5d2SYehuda Sadeh 2212b72e19b9SDan Carpenter if (!osdc->osdmap) 2213b72e19b9SDan Carpenter goto bad; 22143d14c5d2SYehuda Sadeh done: 22153d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 221682dcabadSIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 221782dcabadSIlya Dryomov osdc->osdmap->epoch); 2218cd634fb6SSage Weil 2219cd634fb6SSage Weil /* 2220cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 2221cd634fb6SSage Weil * we find out when we are no longer full and stop returning 2222cd634fb6SSage Weil * ENOSPC. 2223cd634fb6SSage Weil */ 2224d29adb34SJosh Durgin if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 2225d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || 2226d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) 2227cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 2228cd634fb6SSage Weil 2229f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 2230f9d25199SAlex Elder __send_queued(osdc); 2231f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 22323d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 22333d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 22343d14c5d2SYehuda Sadeh return; 22353d14c5d2SYehuda Sadeh 22363d14c5d2SYehuda Sadeh bad: 22373d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 22383d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 22393d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 22403d14c5d2SYehuda Sadeh } 22413d14c5d2SYehuda Sadeh 22423d14c5d2SYehuda Sadeh /* 2243a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 2244a40c4f10SYehuda Sadeh * 2245a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 2246a40c4f10SYehuda Sadeh */ 2247a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 2248a40c4f10SYehuda Sadeh { 2249a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 2250a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 2251a40c4f10SYehuda Sadeh 2252a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 2253a40c4f10SYehuda Sadeh kfree(event); 2254a40c4f10SYehuda Sadeh } 2255a40c4f10SYehuda Sadeh 2256a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 2257a40c4f10SYehuda Sadeh { 2258a40c4f10SYehuda Sadeh kref_get(&event->kref); 2259a40c4f10SYehuda Sadeh } 2260a40c4f10SYehuda Sadeh 2261a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 2262a40c4f10SYehuda Sadeh { 2263a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 2264a40c4f10SYehuda Sadeh } 2265a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 2266a40c4f10SYehuda Sadeh 2267a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 2268a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 2269a40c4f10SYehuda Sadeh { 2270a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2271a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2272a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2273a40c4f10SYehuda Sadeh 2274a40c4f10SYehuda Sadeh while (*p) { 2275a40c4f10SYehuda Sadeh parent = *p; 2276a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2277a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 2278a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2279a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 2280a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2281a40c4f10SYehuda Sadeh else 2282a40c4f10SYehuda Sadeh BUG(); 2283a40c4f10SYehuda Sadeh } 2284a40c4f10SYehuda Sadeh 2285a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 2286a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 2287a40c4f10SYehuda Sadeh } 2288a40c4f10SYehuda Sadeh 2289a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 2290a40c4f10SYehuda Sadeh u64 cookie) 2291a40c4f10SYehuda Sadeh { 2292a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2293a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2294a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2295a40c4f10SYehuda Sadeh 2296a40c4f10SYehuda Sadeh while (*p) { 2297a40c4f10SYehuda Sadeh parent = *p; 2298a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2299a40c4f10SYehuda Sadeh if (cookie < event->cookie) 2300a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2301a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 2302a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2303a40c4f10SYehuda Sadeh else 2304a40c4f10SYehuda Sadeh return event; 2305a40c4f10SYehuda Sadeh } 2306a40c4f10SYehuda Sadeh return NULL; 2307a40c4f10SYehuda Sadeh } 2308a40c4f10SYehuda Sadeh 2309a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 2310a40c4f10SYehuda Sadeh { 2311a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2312a40c4f10SYehuda Sadeh 2313a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 2314a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 2315a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 2316a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2317a40c4f10SYehuda Sadeh } else { 2318a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 2319a40c4f10SYehuda Sadeh } 2320a40c4f10SYehuda Sadeh } 2321a40c4f10SYehuda Sadeh 2322a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 2323a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 23243c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 2325a40c4f10SYehuda Sadeh { 2326a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2327a40c4f10SYehuda Sadeh 2328a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 2329a40c4f10SYehuda Sadeh if (!event) 2330a40c4f10SYehuda Sadeh return -ENOMEM; 2331a40c4f10SYehuda Sadeh 2332a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 2333a40c4f10SYehuda Sadeh event->cb = event_cb; 23343c663bbdSAlex Elder event->one_shot = 0; 2335a40c4f10SYehuda Sadeh event->data = data; 2336a40c4f10SYehuda Sadeh event->osdc = osdc; 2337a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 23383ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 2339a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 2340a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 2341a40c4f10SYehuda Sadeh 2342a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2343a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 2344a40c4f10SYehuda Sadeh __insert_event(osdc, event); 2345a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2346a40c4f10SYehuda Sadeh 2347a40c4f10SYehuda Sadeh *pevent = event; 2348a40c4f10SYehuda Sadeh return 0; 2349a40c4f10SYehuda Sadeh } 2350a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 2351a40c4f10SYehuda Sadeh 2352a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 2353a40c4f10SYehuda Sadeh { 2354a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2355a40c4f10SYehuda Sadeh 2356a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 2357a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2358a40c4f10SYehuda Sadeh __remove_event(event); 2359a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2360a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 2361a40c4f10SYehuda Sadeh } 2362a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 2363a40c4f10SYehuda Sadeh 2364a40c4f10SYehuda Sadeh 2365a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 2366a40c4f10SYehuda Sadeh { 2367a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 2368a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 2369a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 2370a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 2371a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 2372a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 2373a40c4f10SYehuda Sadeh 2374a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 2375a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 2376a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 2377a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2378a40c4f10SYehuda Sadeh kfree(event_work); 2379a40c4f10SYehuda Sadeh } 2380a40c4f10SYehuda Sadeh 2381a40c4f10SYehuda Sadeh 2382a40c4f10SYehuda Sadeh /* 2383a40c4f10SYehuda Sadeh * Process osd watch notifications 2384a40c4f10SYehuda Sadeh */ 23853c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 23863c663bbdSAlex Elder struct ceph_msg *msg) 2387a40c4f10SYehuda Sadeh { 2388a40c4f10SYehuda Sadeh void *p, *end; 2389a40c4f10SYehuda Sadeh u8 proto_ver; 2390a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 2391a40c4f10SYehuda Sadeh u8 opcode; 2392a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2393a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 2394a40c4f10SYehuda Sadeh 2395a40c4f10SYehuda Sadeh p = msg->front.iov_base; 2396a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 2397a40c4f10SYehuda Sadeh 2398a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 2399a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 2400a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 2401a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 2402a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 2403a40c4f10SYehuda Sadeh 2404a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2405a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 2406a40c4f10SYehuda Sadeh if (event) { 24073c663bbdSAlex Elder BUG_ON(event->one_shot); 2408a40c4f10SYehuda Sadeh get_event(event); 2409a40c4f10SYehuda Sadeh } 2410a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2411a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 2412a40c4f10SYehuda Sadeh cookie, ver, event); 2413a40c4f10SYehuda Sadeh if (event) { 2414a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 2415a40c4f10SYehuda Sadeh if (!event_work) { 241691883cd2SIlya Dryomov pr_err("couldn't allocate event_work\n"); 241791883cd2SIlya Dryomov ceph_osdc_put_event(event); 241891883cd2SIlya Dryomov return; 2419a40c4f10SYehuda Sadeh } 24206b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 2421a40c4f10SYehuda Sadeh event_work->event = event; 2422a40c4f10SYehuda Sadeh event_work->ver = ver; 2423a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 2424a40c4f10SYehuda Sadeh event_work->opcode = opcode; 242591883cd2SIlya Dryomov 242691883cd2SIlya Dryomov queue_work(osdc->notify_wq, &event_work->work); 2427a40c4f10SYehuda Sadeh } 2428a40c4f10SYehuda Sadeh 2429a40c4f10SYehuda Sadeh return; 2430a40c4f10SYehuda Sadeh 2431a40c4f10SYehuda Sadeh bad: 2432a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 2433a40c4f10SYehuda Sadeh } 2434a40c4f10SYehuda Sadeh 2435a40c4f10SYehuda Sadeh /* 2436e65550fdSAlex Elder * build new request AND message 2437e65550fdSAlex Elder * 2438e65550fdSAlex Elder */ 2439e65550fdSAlex Elder void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, 2440e65550fdSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 2441e65550fdSAlex Elder struct timespec *mtime) 2442e65550fdSAlex Elder { 2443e65550fdSAlex Elder struct ceph_msg *msg = req->r_request; 2444e65550fdSAlex Elder void *p; 2445e65550fdSAlex Elder size_t msg_size; 2446e65550fdSAlex Elder int flags = req->r_flags; 2447e65550fdSAlex Elder u64 data_len; 2448e65550fdSAlex Elder unsigned int i; 2449e65550fdSAlex Elder 2450e65550fdSAlex Elder req->r_snapid = snap_id; 245184127282SIlya Dryomov WARN_ON(snapc != req->r_snapc); 2452e65550fdSAlex Elder 2453e65550fdSAlex Elder /* encode request */ 2454e65550fdSAlex Elder msg->hdr.version = cpu_to_le16(4); 2455e65550fdSAlex Elder 2456e65550fdSAlex Elder p = msg->front.iov_base; 2457e65550fdSAlex Elder ceph_encode_32(&p, 1); /* client_inc is always 1 */ 2458e65550fdSAlex Elder req->r_request_osdmap_epoch = p; 2459e65550fdSAlex Elder p += 4; 2460e65550fdSAlex Elder req->r_request_flags = p; 2461e65550fdSAlex Elder p += 4; 2462e65550fdSAlex Elder if (req->r_flags & CEPH_OSD_FLAG_WRITE) 2463e65550fdSAlex Elder ceph_encode_timespec(p, mtime); 2464e65550fdSAlex Elder p += sizeof(struct ceph_timespec); 2465e65550fdSAlex Elder req->r_request_reassert_version = p; 2466e65550fdSAlex Elder p += sizeof(struct ceph_eversion); /* will get filled in */ 2467e65550fdSAlex Elder 2468e65550fdSAlex Elder /* oloc */ 2469e65550fdSAlex Elder ceph_encode_8(&p, 4); 2470e65550fdSAlex Elder ceph_encode_8(&p, 4); 2471e65550fdSAlex Elder ceph_encode_32(&p, 8 + 4 + 4); 2472e65550fdSAlex Elder req->r_request_pool = p; 2473e65550fdSAlex Elder p += 8; 2474e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2475e65550fdSAlex Elder ceph_encode_32(&p, 0); /* key len */ 2476e65550fdSAlex Elder 2477e65550fdSAlex Elder ceph_encode_8(&p, 1); 2478e65550fdSAlex Elder req->r_request_pgid = p; 2479e65550fdSAlex Elder p += 8 + 4; 2480e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2481e65550fdSAlex Elder 2482e65550fdSAlex Elder /* oid */ 24833c972c95SIlya Dryomov ceph_encode_32(&p, req->r_base_oid.name_len); 24843c972c95SIlya Dryomov memcpy(p, req->r_base_oid.name, req->r_base_oid.name_len); 2485d30291b9SIlya Dryomov dout("oid %*pE len %d\n", req->r_base_oid.name_len, 24863c972c95SIlya Dryomov req->r_base_oid.name, req->r_base_oid.name_len); 24873c972c95SIlya Dryomov p += req->r_base_oid.name_len; 2488e65550fdSAlex Elder 2489e65550fdSAlex Elder /* ops--can imply data */ 2490e65550fdSAlex Elder ceph_encode_16(&p, (u16)req->r_num_ops); 2491e65550fdSAlex Elder data_len = 0; 2492e65550fdSAlex Elder for (i = 0; i < req->r_num_ops; i++) { 2493e65550fdSAlex Elder data_len += osd_req_encode_op(req, p, i); 2494e65550fdSAlex Elder p += sizeof(struct ceph_osd_op); 2495e65550fdSAlex Elder } 2496e65550fdSAlex Elder 2497e65550fdSAlex Elder /* snaps */ 2498e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapid); 2499e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 2500e65550fdSAlex Elder ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 2501e65550fdSAlex Elder if (req->r_snapc) { 250284127282SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) { 2503e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc->snaps[i]); 2504e65550fdSAlex Elder } 2505e65550fdSAlex Elder } 2506e65550fdSAlex Elder 2507e65550fdSAlex Elder req->r_request_attempts = p; 2508e65550fdSAlex Elder p += 4; 2509e65550fdSAlex Elder 2510e65550fdSAlex Elder /* data */ 2511e65550fdSAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 2512e65550fdSAlex Elder u16 data_off; 2513e65550fdSAlex Elder 2514e65550fdSAlex Elder /* 2515e65550fdSAlex Elder * The header "data_off" is a hint to the receiver 2516e65550fdSAlex Elder * allowing it to align received data into its 2517e65550fdSAlex Elder * buffers such that there's no need to re-copy 2518e65550fdSAlex Elder * it before writing it to disk (direct I/O). 2519e65550fdSAlex Elder */ 2520e65550fdSAlex Elder data_off = (u16) (off & 0xffff); 2521e65550fdSAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 2522e65550fdSAlex Elder } 2523e65550fdSAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 2524e65550fdSAlex Elder 2525e65550fdSAlex Elder BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 2526e65550fdSAlex Elder msg_size = p - msg->front.iov_base; 2527e65550fdSAlex Elder msg->front.iov_len = msg_size; 2528e65550fdSAlex Elder msg->hdr.front_len = cpu_to_le32(msg_size); 2529e65550fdSAlex Elder 2530e65550fdSAlex Elder dout("build_request msg_size was %d\n", (int)msg_size); 2531e65550fdSAlex Elder } 2532e65550fdSAlex Elder EXPORT_SYMBOL(ceph_osdc_build_request); 2533e65550fdSAlex Elder 2534e65550fdSAlex Elder /* 25353d14c5d2SYehuda Sadeh * Register request, send initial attempt. 25363d14c5d2SYehuda Sadeh */ 25373d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 25383d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 25393d14c5d2SYehuda Sadeh bool nofail) 25403d14c5d2SYehuda Sadeh { 25410bbfdfe8SIlya Dryomov int rc; 25423d14c5d2SYehuda Sadeh 25433d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 25443d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 25450bbfdfe8SIlya Dryomov 25460bbfdfe8SIlya Dryomov rc = __ceph_osdc_start_request(osdc, req, nofail); 25470bbfdfe8SIlya Dryomov 25483d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 25493d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 25500bbfdfe8SIlya Dryomov 25513d14c5d2SYehuda Sadeh return rc; 25523d14c5d2SYehuda Sadeh } 25533d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 25543d14c5d2SYehuda Sadeh 25553d14c5d2SYehuda Sadeh /* 2556c9f9b93dSIlya Dryomov * Unregister a registered request. The request is not completed (i.e. 2557c9f9b93dSIlya Dryomov * no callbacks or wakeups) - higher layers are supposed to know what 2558c9f9b93dSIlya Dryomov * they are canceling. 2559c9f9b93dSIlya Dryomov */ 2560c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 2561c9f9b93dSIlya Dryomov { 2562c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 2563c9f9b93dSIlya Dryomov 2564c9f9b93dSIlya Dryomov mutex_lock(&osdc->request_mutex); 2565c9f9b93dSIlya Dryomov if (req->r_linger) 2566c9f9b93dSIlya Dryomov __unregister_linger_request(osdc, req); 2567c9f9b93dSIlya Dryomov __unregister_request(osdc, req); 2568c9f9b93dSIlya Dryomov mutex_unlock(&osdc->request_mutex); 2569c9f9b93dSIlya Dryomov 2570c9f9b93dSIlya Dryomov dout("%s %p tid %llu canceled\n", __func__, req, req->r_tid); 2571c9f9b93dSIlya Dryomov } 2572c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 2573c9f9b93dSIlya Dryomov 2574c9f9b93dSIlya Dryomov /* 25753d14c5d2SYehuda Sadeh * wait for a request to complete 25763d14c5d2SYehuda Sadeh */ 25773d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 25783d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 25793d14c5d2SYehuda Sadeh { 25803d14c5d2SYehuda Sadeh int rc; 25813d14c5d2SYehuda Sadeh 2582c9f9b93dSIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 2583c9f9b93dSIlya Dryomov 25843d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 25853d14c5d2SYehuda Sadeh if (rc < 0) { 2586c9f9b93dSIlya Dryomov dout("%s %p tid %llu interrupted\n", __func__, req, req->r_tid); 2587c9f9b93dSIlya Dryomov ceph_osdc_cancel_request(req); 258825845472SSage Weil complete_request(req); 25893d14c5d2SYehuda Sadeh return rc; 25903d14c5d2SYehuda Sadeh } 25913d14c5d2SYehuda Sadeh 2592c9f9b93dSIlya Dryomov dout("%s %p tid %llu result %d\n", __func__, req, req->r_tid, 2593c9f9b93dSIlya Dryomov req->r_result); 25943d14c5d2SYehuda Sadeh return req->r_result; 25953d14c5d2SYehuda Sadeh } 25963d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 25973d14c5d2SYehuda Sadeh 25983d14c5d2SYehuda Sadeh /* 25993d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 26003d14c5d2SYehuda Sadeh */ 26013d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 26023d14c5d2SYehuda Sadeh { 26033d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 26043d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 26053d14c5d2SYehuda Sadeh 26063d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 26073d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 26083d14c5d2SYehuda Sadeh while (1) { 26093d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 26103d14c5d2SYehuda Sadeh if (!req) 26113d14c5d2SYehuda Sadeh break; 26123d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 26133d14c5d2SYehuda Sadeh break; 26143d14c5d2SYehuda Sadeh 26153d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 26163d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 26173d14c5d2SYehuda Sadeh continue; 26183d14c5d2SYehuda Sadeh 26193d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 26203d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 26213d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 26223d14c5d2SYehuda Sadeh req->r_tid, last_tid); 26233d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 26243d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 26253d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 26263d14c5d2SYehuda Sadeh } 26273d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 26283d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 26293d14c5d2SYehuda Sadeh } 26303d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 26313d14c5d2SYehuda Sadeh 26323d14c5d2SYehuda Sadeh /* 2633dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 2634dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 2635dd935f44SJosh Durgin */ 2636f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 2637dd935f44SJosh Durgin { 2638dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 2639dd935f44SJosh Durgin } 2640dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 2641dd935f44SJosh Durgin 2642dd935f44SJosh Durgin 2643dd935f44SJosh Durgin /* 26443d14c5d2SYehuda Sadeh * init, shutdown 26453d14c5d2SYehuda Sadeh */ 26463d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 26473d14c5d2SYehuda Sadeh { 26483d14c5d2SYehuda Sadeh int err; 26493d14c5d2SYehuda Sadeh 26503d14c5d2SYehuda Sadeh dout("init\n"); 26513d14c5d2SYehuda Sadeh osdc->client = client; 26523d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 26533d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 26543d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 26553d14c5d2SYehuda Sadeh osdc->last_tid = 0; 26563d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 26573d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 26583d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 26593d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 26606f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 26616f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 2662a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 26633d14c5d2SYehuda Sadeh osdc->num_requests = 0; 26643d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 26653d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2666a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 2667a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 2668a40c4f10SYehuda Sadeh osdc->event_count = 0; 26693d14c5d2SYehuda Sadeh 26703d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 2671a319bf56SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 26723d14c5d2SYehuda Sadeh 26733d14c5d2SYehuda Sadeh err = -ENOMEM; 26749e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 26759e767adbSIlya Dryomov ceph_osd_request_cache); 26763d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 26773d14c5d2SYehuda Sadeh goto out; 26783d14c5d2SYehuda Sadeh 2679d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2680711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op"); 26813d14c5d2SYehuda Sadeh if (err < 0) 26823d14c5d2SYehuda Sadeh goto out_mempool; 2683d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 2684711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op_reply"); 26853d14c5d2SYehuda Sadeh if (err < 0) 26863d14c5d2SYehuda Sadeh goto out_msgpool; 2687a40c4f10SYehuda Sadeh 2688dbcae088SDan Carpenter err = -ENOMEM; 2689a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2690dbcae088SDan Carpenter if (!osdc->notify_wq) 2691c172ec5cSIlya Dryomov goto out_msgpool_reply; 2692c172ec5cSIlya Dryomov 26933d14c5d2SYehuda Sadeh return 0; 26943d14c5d2SYehuda Sadeh 2695c172ec5cSIlya Dryomov out_msgpool_reply: 2696c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 26973d14c5d2SYehuda Sadeh out_msgpool: 26983d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 26993d14c5d2SYehuda Sadeh out_mempool: 27003d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 27013d14c5d2SYehuda Sadeh out: 27023d14c5d2SYehuda Sadeh return err; 27033d14c5d2SYehuda Sadeh } 27043d14c5d2SYehuda Sadeh 27053d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 27063d14c5d2SYehuda Sadeh { 2707a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2708a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 27093d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 27103d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 271142a2c09fSIlya Dryomov 271242a2c09fSIlya Dryomov mutex_lock(&osdc->request_mutex); 271342a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 271442a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 271542a2c09fSIlya Dryomov struct ceph_osd, o_node); 271642a2c09fSIlya Dryomov remove_osd(osdc, osd); 271742a2c09fSIlya Dryomov } 271842a2c09fSIlya Dryomov mutex_unlock(&osdc->request_mutex); 271942a2c09fSIlya Dryomov 27203d14c5d2SYehuda Sadeh if (osdc->osdmap) { 27213d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 27223d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 27233d14c5d2SYehuda Sadeh } 27243d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 27253d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 27263d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 27273d14c5d2SYehuda Sadeh } 27283d14c5d2SYehuda Sadeh 27293d14c5d2SYehuda Sadeh /* 27303d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 27313d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 27323d14c5d2SYehuda Sadeh */ 27333d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 27343d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 27353d14c5d2SYehuda Sadeh u64 off, u64 *plen, 27363d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2737b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 27383d14c5d2SYehuda Sadeh { 27393d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 27403d14c5d2SYehuda Sadeh int rc = 0; 27413d14c5d2SYehuda Sadeh 27423d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 27433d14c5d2SYehuda Sadeh vino.snap, off, *plen); 2744715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 27453d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 2746acead002SAlex Elder NULL, truncate_seq, truncate_size, 2747153e5167SAlex Elder false); 27486816282dSSage Weil if (IS_ERR(req)) 27496816282dSSage Weil return PTR_ERR(req); 27503d14c5d2SYehuda Sadeh 27513d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 27520fff87ecSAlex Elder 2753406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 2754a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 27553d14c5d2SYehuda Sadeh 2756e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 275743bfe5deSAlex Elder off, *plen, *plen, page_align); 27583d14c5d2SYehuda Sadeh 275979528734SAlex Elder ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); 276002ee07d3SAlex Elder 27613d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 27623d14c5d2SYehuda Sadeh if (!rc) 27633d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 27643d14c5d2SYehuda Sadeh 27653d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 27663d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 27673d14c5d2SYehuda Sadeh return rc; 27683d14c5d2SYehuda Sadeh } 27693d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 27703d14c5d2SYehuda Sadeh 27713d14c5d2SYehuda Sadeh /* 27723d14c5d2SYehuda Sadeh * do a synchronous write on N pages 27733d14c5d2SYehuda Sadeh */ 27743d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 27753d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 27763d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 27773d14c5d2SYehuda Sadeh u64 off, u64 len, 27783d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 27793d14c5d2SYehuda Sadeh struct timespec *mtime, 278024808826SAlex Elder struct page **pages, int num_pages) 27813d14c5d2SYehuda Sadeh { 27823d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 27833d14c5d2SYehuda Sadeh int rc = 0; 2784b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 27853d14c5d2SYehuda Sadeh 2786acead002SAlex Elder BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ 2787715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 27883d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 278924808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2790acead002SAlex Elder snapc, truncate_seq, truncate_size, 2791153e5167SAlex Elder true); 27926816282dSSage Weil if (IS_ERR(req)) 27936816282dSSage Weil return PTR_ERR(req); 27943d14c5d2SYehuda Sadeh 27953d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 2796406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 279743bfe5deSAlex Elder false, false); 279843bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 27993d14c5d2SYehuda Sadeh 280079528734SAlex Elder ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); 280102ee07d3SAlex Elder 280287f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 28033d14c5d2SYehuda Sadeh if (!rc) 28043d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 28053d14c5d2SYehuda Sadeh 28063d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 28073d14c5d2SYehuda Sadeh if (rc == 0) 28083d14c5d2SYehuda Sadeh rc = len; 28093d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 28103d14c5d2SYehuda Sadeh return rc; 28113d14c5d2SYehuda Sadeh } 28123d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 28133d14c5d2SYehuda Sadeh 28145522ae0bSAlex Elder int ceph_osdc_setup(void) 28155522ae0bSAlex Elder { 28163f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 28173f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 28183f1af42aSIlya Dryomov 28195522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 28203f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 28213f1af42aSIlya Dryomov 0, 0, NULL); 28225522ae0bSAlex Elder 28235522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 28245522ae0bSAlex Elder } 28255522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 28265522ae0bSAlex Elder 28275522ae0bSAlex Elder void ceph_osdc_cleanup(void) 28285522ae0bSAlex Elder { 28295522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 28305522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 28315522ae0bSAlex Elder ceph_osd_request_cache = NULL; 28325522ae0bSAlex Elder } 28335522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 28345522ae0bSAlex Elder 28353d14c5d2SYehuda Sadeh /* 28363d14c5d2SYehuda Sadeh * handle incoming message 28373d14c5d2SYehuda Sadeh */ 28383d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 28393d14c5d2SYehuda Sadeh { 28403d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28413d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 28423d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 28433d14c5d2SYehuda Sadeh 28443d14c5d2SYehuda Sadeh if (!osd) 28453d14c5d2SYehuda Sadeh goto out; 28463d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 28473d14c5d2SYehuda Sadeh 28483d14c5d2SYehuda Sadeh switch (type) { 28493d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 28503d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 28513d14c5d2SYehuda Sadeh break; 28523d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 285370cf052dSShraddha Barke handle_reply(osdc, msg); 28543d14c5d2SYehuda Sadeh break; 2855a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2856a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2857a40c4f10SYehuda Sadeh break; 28583d14c5d2SYehuda Sadeh 28593d14c5d2SYehuda Sadeh default: 28603d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 28613d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 28623d14c5d2SYehuda Sadeh } 28633d14c5d2SYehuda Sadeh out: 28643d14c5d2SYehuda Sadeh ceph_msg_put(msg); 28653d14c5d2SYehuda Sadeh } 28663d14c5d2SYehuda Sadeh 28673d14c5d2SYehuda Sadeh /* 2868d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 2869d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 2870d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 28713d14c5d2SYehuda Sadeh */ 28723d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 28733d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 28743d14c5d2SYehuda Sadeh int *skip) 28753d14c5d2SYehuda Sadeh { 28763d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28773d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 28783d14c5d2SYehuda Sadeh struct ceph_msg *m; 28793d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 28803f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 28813d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 28823d14c5d2SYehuda Sadeh u64 tid; 28833d14c5d2SYehuda Sadeh 28843d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 28853d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 2886fcd00b68SIlya Dryomov req = lookup_request(&osdc->requests, tid); 28873d14c5d2SYehuda Sadeh if (!req) { 2888cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 2889cd8140c6SIlya Dryomov osd->o_osd, tid); 28903d14c5d2SYehuda Sadeh m = NULL; 2891d15f9d69SIlya Dryomov *skip = 1; 28923d14c5d2SYehuda Sadeh goto out; 28933d14c5d2SYehuda Sadeh } 28943d14c5d2SYehuda Sadeh 28958921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 28963d14c5d2SYehuda Sadeh 2897f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 2898d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 2899d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 2900d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 29013f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 29023f0a4ac5SIlya Dryomov false); 29033d14c5d2SYehuda Sadeh if (!m) 29043d14c5d2SYehuda Sadeh goto out; 29053d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 29063d14c5d2SYehuda Sadeh req->r_reply = m; 29073d14c5d2SYehuda Sadeh } 29083d14c5d2SYehuda Sadeh 2909d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 2910d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 2911d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 2912d15f9d69SIlya Dryomov req->r_reply->data_length); 29133d14c5d2SYehuda Sadeh m = NULL; 2914d15f9d69SIlya Dryomov *skip = 1; 29153d14c5d2SYehuda Sadeh goto out; 29163d14c5d2SYehuda Sadeh } 2917d15f9d69SIlya Dryomov 2918d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 29193d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 29203d14c5d2SYehuda Sadeh 29213d14c5d2SYehuda Sadeh out: 29223d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 29233d14c5d2SYehuda Sadeh return m; 29243d14c5d2SYehuda Sadeh } 29253d14c5d2SYehuda Sadeh 29263d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 29273d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 29283d14c5d2SYehuda Sadeh int *skip) 29293d14c5d2SYehuda Sadeh { 29303d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29313d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 29323d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 29333d14c5d2SYehuda Sadeh 29341c20f2d2SAlex Elder *skip = 0; 29353d14c5d2SYehuda Sadeh switch (type) { 29363d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2937a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2938b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 29393d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 29403d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 29413d14c5d2SYehuda Sadeh default: 29423d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 29433d14c5d2SYehuda Sadeh osd->o_osd); 29443d14c5d2SYehuda Sadeh *skip = 1; 29453d14c5d2SYehuda Sadeh return NULL; 29463d14c5d2SYehuda Sadeh } 29473d14c5d2SYehuda Sadeh } 29483d14c5d2SYehuda Sadeh 29493d14c5d2SYehuda Sadeh /* 29503d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 29513d14c5d2SYehuda Sadeh */ 29523d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 29533d14c5d2SYehuda Sadeh { 29543d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29553d14c5d2SYehuda Sadeh if (get_osd(osd)) 29563d14c5d2SYehuda Sadeh return con; 29573d14c5d2SYehuda Sadeh return NULL; 29583d14c5d2SYehuda Sadeh } 29593d14c5d2SYehuda Sadeh 29603d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 29613d14c5d2SYehuda Sadeh { 29623d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29633d14c5d2SYehuda Sadeh put_osd(osd); 29643d14c5d2SYehuda Sadeh } 29653d14c5d2SYehuda Sadeh 29663d14c5d2SYehuda Sadeh /* 29673d14c5d2SYehuda Sadeh * authentication 29683d14c5d2SYehuda Sadeh */ 2969a3530df3SAlex Elder /* 2970a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2971a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2972a3530df3SAlex Elder */ 2973a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 29748f43fb53SAlex Elder int *proto, int force_new) 29753d14c5d2SYehuda Sadeh { 29763d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 29773d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 29783d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 297974f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 29803d14c5d2SYehuda Sadeh 298174f1869fSAlex Elder if (force_new && auth->authorizer) { 29826c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 298374f1869fSAlex Elder auth->authorizer = NULL; 29843d14c5d2SYehuda Sadeh } 298527859f97SSage Weil if (!auth->authorizer) { 298627859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2987a3530df3SAlex Elder auth); 29883d14c5d2SYehuda Sadeh if (ret) 2989a3530df3SAlex Elder return ERR_PTR(ret); 299027859f97SSage Weil } else { 299127859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 29920bed9b5cSSage Weil auth); 29930bed9b5cSSage Weil if (ret) 29940bed9b5cSSage Weil return ERR_PTR(ret); 29953d14c5d2SYehuda Sadeh } 29963d14c5d2SYehuda Sadeh *proto = ac->protocol; 299774f1869fSAlex Elder 2998a3530df3SAlex Elder return auth; 29993d14c5d2SYehuda Sadeh } 30003d14c5d2SYehuda Sadeh 30013d14c5d2SYehuda Sadeh 30023d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 30033d14c5d2SYehuda Sadeh { 30043d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 30053d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 30063d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 30073d14c5d2SYehuda Sadeh 300827859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 30093d14c5d2SYehuda Sadeh } 30103d14c5d2SYehuda Sadeh 30113d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 30123d14c5d2SYehuda Sadeh { 30133d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 30143d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 30153d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 30163d14c5d2SYehuda Sadeh 301727859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 30183d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 30193d14c5d2SYehuda Sadeh } 30203d14c5d2SYehuda Sadeh 302179dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 302233d07337SYan, Zheng { 302379dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 302433d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 302579dbd1baSIlya Dryomov 302633d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 302733d07337SYan, Zheng } 302833d07337SYan, Zheng 302979dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 303033d07337SYan, Zheng { 303179dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 303233d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 303379dbd1baSIlya Dryomov 303433d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 303533d07337SYan, Zheng } 303633d07337SYan, Zheng 30373d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 30383d14c5d2SYehuda Sadeh .get = get_osd_con, 30393d14c5d2SYehuda Sadeh .put = put_osd_con, 30403d14c5d2SYehuda Sadeh .dispatch = dispatch, 30413d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 30423d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 30433d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 30443d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 304579dbd1baSIlya Dryomov .sign_message = osd_sign_message, 304679dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 30473d14c5d2SYehuda Sadeh .fault = osd_reset, 30483d14c5d2SYehuda Sadeh }; 3049