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 /* 3023d14c5d2SYehuda Sadeh * requests 3033d14c5d2SYehuda Sadeh */ 3049e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 3053d14c5d2SYehuda Sadeh { 3069e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 3079e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 3085476492fSAlex Elder unsigned int which; 3093d14c5d2SYehuda Sadeh 3109e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 3119e94af20SIlya Dryomov req->r_request, req->r_reply); 3126562d661SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 3136562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_req_lru_item)); 3146562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_osd_item)); 3156562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_linger_item)); 3166562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_linger_osd_item)); 3176562d661SIlya Dryomov WARN_ON(req->r_osd); 3189e94af20SIlya Dryomov 3193d14c5d2SYehuda Sadeh if (req->r_request) 3203d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 321ace6d3a9SAlex Elder if (req->r_reply) { 3228921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 323ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 324ace6d3a9SAlex Elder } 3250fff87ecSAlex Elder 3265476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 3275476492fSAlex Elder osd_req_op_data_release(req, which); 3280fff87ecSAlex Elder 329d30291b9SIlya Dryomov ceph_oid_destroy(&req->r_base_oid); 330d30291b9SIlya Dryomov ceph_oid_destroy(&req->r_target_oid); 3313d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 332d30291b9SIlya Dryomov 3333d14c5d2SYehuda Sadeh if (req->r_mempool) 3343d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 3353f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 3365522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 3373f1af42aSIlya Dryomov else 3383f1af42aSIlya Dryomov kfree(req); 3393d14c5d2SYehuda Sadeh } 3409e94af20SIlya Dryomov 3419e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 3429e94af20SIlya Dryomov { 3439e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3449e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3459e94af20SIlya Dryomov kref_get(&req->r_kref); 3469e94af20SIlya Dryomov } 3479e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 3489e94af20SIlya Dryomov 3499e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 3509e94af20SIlya Dryomov { 3513ed97d63SIlya Dryomov if (req) { 3529e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3539e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3549e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 3559e94af20SIlya Dryomov } 3563ed97d63SIlya Dryomov } 3579e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 3583d14c5d2SYehuda Sadeh 3593d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 3603d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 3611b83bef2SSage Weil unsigned int num_ops, 3623d14c5d2SYehuda Sadeh bool use_mempool, 36354a54007SAlex Elder gfp_t gfp_flags) 3643d14c5d2SYehuda Sadeh { 3653d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 3663d14c5d2SYehuda Sadeh 3673d14c5d2SYehuda Sadeh if (use_mempool) { 3683f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 3693d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 3703f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 3713f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 3723d14c5d2SYehuda Sadeh } else { 3733f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 3743f1af42aSIlya Dryomov req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), 3753f1af42aSIlya Dryomov gfp_flags); 3763d14c5d2SYehuda Sadeh } 3773f1af42aSIlya Dryomov if (unlikely(!req)) 3783d14c5d2SYehuda Sadeh return NULL; 3793d14c5d2SYehuda Sadeh 3803f1af42aSIlya Dryomov /* req only, each op is zeroed in _osd_req_op_init() */ 3813f1af42aSIlya Dryomov memset(req, 0, sizeof(*req)); 3823f1af42aSIlya Dryomov 3833d14c5d2SYehuda Sadeh req->r_osdc = osdc; 3843d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 38579528734SAlex Elder req->r_num_ops = num_ops; 38684127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 38784127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 3883d14c5d2SYehuda Sadeh 3893d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 3903d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 3913d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 392a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 3933d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 394a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 3951d0326b1SIlya Dryomov INIT_LIST_HEAD(&req->r_linger_osd_item); 396935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 397cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 398cd43045cSSage Weil 399d30291b9SIlya Dryomov ceph_oid_init(&req->r_base_oid); 4003c972c95SIlya Dryomov req->r_base_oloc.pool = -1; 401d30291b9SIlya Dryomov ceph_oid_init(&req->r_target_oid); 402205ee118SIlya Dryomov req->r_target_oloc.pool = -1; 40322116525SIlya Dryomov 40413d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 40513d1ad16SIlya Dryomov return req; 4063f1af42aSIlya Dryomov } 40713d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 4083f1af42aSIlya Dryomov 40913d1ad16SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 41013d1ad16SIlya Dryomov { 41113d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 41213d1ad16SIlya Dryomov struct ceph_msg *msg; 41313d1ad16SIlya Dryomov int msg_size; 4143d14c5d2SYehuda Sadeh 415d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 416d30291b9SIlya Dryomov 41713d1ad16SIlya Dryomov /* create request message */ 418ae458f5aSIlya Dryomov msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */ 419ae458f5aSIlya Dryomov msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */ 420ae458f5aSIlya Dryomov msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 421ae458f5aSIlya Dryomov msg_size += 1 + 8 + 4 + 4; /* pgid */ 42213d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 42313d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 424ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 425ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 42613d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 427ae458f5aSIlya Dryomov msg_size += 4; /* retry_attempt */ 428ae458f5aSIlya Dryomov 42913d1ad16SIlya Dryomov if (req->r_mempool) 4303d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 4313d14c5d2SYehuda Sadeh else 43213d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); 43313d1ad16SIlya Dryomov if (!msg) 43413d1ad16SIlya Dryomov return -ENOMEM; 4353d14c5d2SYehuda Sadeh 4363d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 4373d14c5d2SYehuda Sadeh req->r_request = msg; 4383d14c5d2SYehuda Sadeh 43913d1ad16SIlya Dryomov /* create reply message */ 44013d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 441711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 442711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 44313d1ad16SIlya Dryomov 44413d1ad16SIlya Dryomov if (req->r_mempool) 44513d1ad16SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 44613d1ad16SIlya Dryomov else 44713d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); 44813d1ad16SIlya Dryomov if (!msg) 44913d1ad16SIlya Dryomov return -ENOMEM; 45013d1ad16SIlya Dryomov 45113d1ad16SIlya Dryomov req->r_reply = msg; 45213d1ad16SIlya Dryomov 45313d1ad16SIlya Dryomov return 0; 45413d1ad16SIlya Dryomov } 45513d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 4563d14c5d2SYehuda Sadeh 457a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 458a8dd0a37SAlex Elder { 459a8dd0a37SAlex Elder switch (opcode) { 46070b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 46170b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 46270b5bfa3SIlya Dryomov #undef GENERATE_CASE 463a8dd0a37SAlex Elder default: 464a8dd0a37SAlex Elder return false; 465a8dd0a37SAlex Elder } 466a8dd0a37SAlex Elder } 467a8dd0a37SAlex Elder 46833803f33SAlex Elder /* 46933803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 47033803f33SAlex Elder * other information associated with them. It also serves as a 47133803f33SAlex Elder * common init routine for all the other init functions, below. 47233803f33SAlex Elder */ 473c99d2d4aSAlex Elder static struct ceph_osd_req_op * 47449719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 475144cba14SYan, Zheng u16 opcode, u32 flags) 47633803f33SAlex Elder { 477c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 478c99d2d4aSAlex Elder 479c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 48033803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 48133803f33SAlex Elder 482c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 48333803f33SAlex Elder memset(op, 0, sizeof (*op)); 48433803f33SAlex Elder op->op = opcode; 485144cba14SYan, Zheng op->flags = flags; 486c99d2d4aSAlex Elder 487c99d2d4aSAlex Elder return op; 48833803f33SAlex Elder } 48933803f33SAlex Elder 49049719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 491144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 49249719778SAlex Elder { 493144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 49449719778SAlex Elder } 49549719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 49649719778SAlex Elder 497c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 498c99d2d4aSAlex Elder unsigned int which, u16 opcode, 49933803f33SAlex Elder u64 offset, u64 length, 50033803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 50133803f33SAlex Elder { 502144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 503144cba14SYan, Zheng opcode, 0); 50433803f33SAlex Elder size_t payload_len = 0; 50533803f33SAlex Elder 506ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 507e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 508e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 50933803f33SAlex Elder 51033803f33SAlex Elder op->extent.offset = offset; 51133803f33SAlex Elder op->extent.length = length; 51233803f33SAlex Elder op->extent.truncate_size = truncate_size; 51333803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 514e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 51533803f33SAlex Elder payload_len += length; 51633803f33SAlex Elder 517de2aa102SIlya Dryomov op->indata_len = payload_len; 51833803f33SAlex Elder } 51933803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 52033803f33SAlex Elder 521c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 522c99d2d4aSAlex Elder unsigned int which, u64 length) 523e5975c7cSAlex Elder { 524c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 525c99d2d4aSAlex Elder u64 previous; 526c99d2d4aSAlex Elder 527c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 528c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 529c99d2d4aSAlex Elder previous = op->extent.length; 530e5975c7cSAlex Elder 531e5975c7cSAlex Elder if (length == previous) 532e5975c7cSAlex Elder return; /* Nothing to do */ 533e5975c7cSAlex Elder BUG_ON(length > previous); 534e5975c7cSAlex Elder 535e5975c7cSAlex Elder op->extent.length = length; 536de2aa102SIlya Dryomov op->indata_len -= previous - length; 537e5975c7cSAlex Elder } 538e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 539e5975c7cSAlex Elder 5402c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 5412c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 5422c63f49aSYan, Zheng { 5432c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 5442c63f49aSYan, Zheng 5452c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 5462c63f49aSYan, Zheng 5472c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 5482c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 5492c63f49aSYan, Zheng /* dup previous one */ 5502c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 5512c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 5522c63f49aSYan, Zheng op->extent = prev_op->extent; 5532c63f49aSYan, Zheng /* adjust offset */ 5542c63f49aSYan, Zheng op->extent.offset += offset_inc; 5552c63f49aSYan, Zheng op->extent.length -= offset_inc; 5562c63f49aSYan, Zheng 5572c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 5582c63f49aSYan, Zheng op->indata_len -= offset_inc; 5592c63f49aSYan, Zheng } 5602c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 5612c63f49aSYan, Zheng 562c99d2d4aSAlex Elder void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 56304017e29SAlex Elder u16 opcode, const char *class, const char *method) 56433803f33SAlex Elder { 565144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 566144cba14SYan, Zheng opcode, 0); 5675f562df5SAlex Elder struct ceph_pagelist *pagelist; 56833803f33SAlex Elder size_t payload_len = 0; 56933803f33SAlex Elder size_t size; 57033803f33SAlex Elder 57133803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 57233803f33SAlex Elder 5735f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 5745f562df5SAlex Elder BUG_ON(!pagelist); 5755f562df5SAlex Elder ceph_pagelist_init(pagelist); 5765f562df5SAlex Elder 57733803f33SAlex Elder op->cls.class_name = class; 57833803f33SAlex Elder size = strlen(class); 57933803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 58033803f33SAlex Elder op->cls.class_len = size; 5815f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 58233803f33SAlex Elder payload_len += size; 58333803f33SAlex Elder 58433803f33SAlex Elder op->cls.method_name = method; 58533803f33SAlex Elder size = strlen(method); 58633803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 58733803f33SAlex Elder op->cls.method_len = size; 5885f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 58933803f33SAlex Elder payload_len += size; 59033803f33SAlex Elder 591a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 5925f562df5SAlex Elder 59333803f33SAlex Elder op->cls.argc = 0; /* currently unused */ 59433803f33SAlex Elder 595de2aa102SIlya Dryomov op->indata_len = payload_len; 59633803f33SAlex Elder } 59733803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 5988c042b0dSAlex Elder 599d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 600d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 601d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 602d74b50beSYan, Zheng { 603144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 604144cba14SYan, Zheng opcode, 0); 605d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 606d74b50beSYan, Zheng size_t payload_len; 607d74b50beSYan, Zheng 608d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 609d74b50beSYan, Zheng 610d74b50beSYan, Zheng pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); 611d74b50beSYan, Zheng if (!pagelist) 612d74b50beSYan, Zheng return -ENOMEM; 613d74b50beSYan, Zheng 614d74b50beSYan, Zheng ceph_pagelist_init(pagelist); 615d74b50beSYan, Zheng 616d74b50beSYan, Zheng payload_len = strlen(name); 617d74b50beSYan, Zheng op->xattr.name_len = payload_len; 618d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 619d74b50beSYan, Zheng 620d74b50beSYan, Zheng op->xattr.value_len = size; 621d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 622d74b50beSYan, Zheng payload_len += size; 623d74b50beSYan, Zheng 624d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 625d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 626d74b50beSYan, Zheng 627d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 628de2aa102SIlya Dryomov op->indata_len = payload_len; 629d74b50beSYan, Zheng return 0; 630d74b50beSYan, Zheng } 631d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 632d74b50beSYan, Zheng 633c99d2d4aSAlex Elder void osd_req_op_watch_init(struct ceph_osd_request *osd_req, 634c99d2d4aSAlex Elder unsigned int which, u16 opcode, 63533803f33SAlex Elder u64 cookie, u64 version, int flag) 63633803f33SAlex Elder { 637144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 638144cba14SYan, Zheng opcode, 0); 63933803f33SAlex Elder 640c99d2d4aSAlex Elder BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 64133803f33SAlex Elder 64233803f33SAlex Elder op->watch.cookie = cookie; 6439ef1ee5aSAlex Elder op->watch.ver = version; 64433803f33SAlex Elder if (opcode == CEPH_OSD_OP_WATCH && flag) 64533803f33SAlex Elder op->watch.flag = (u8)1; 64633803f33SAlex Elder } 64733803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_watch_init); 64833803f33SAlex Elder 649c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 650c647b8a8SIlya Dryomov unsigned int which, 651c647b8a8SIlya Dryomov u64 expected_object_size, 652c647b8a8SIlya Dryomov u64 expected_write_size) 653c647b8a8SIlya Dryomov { 654c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 655144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 656144cba14SYan, Zheng 0); 657c647b8a8SIlya Dryomov 658c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 659c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 660c647b8a8SIlya Dryomov 661c647b8a8SIlya Dryomov /* 662c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 663c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 664c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 665c647b8a8SIlya Dryomov */ 666c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 667c647b8a8SIlya Dryomov } 668c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 669c647b8a8SIlya Dryomov 67090af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 671ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 672ec9123c5SAlex Elder { 673ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 674ec9123c5SAlex Elder 675ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 676ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 677ec9123c5SAlex Elder if (length) 67890af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 679ec9123c5SAlex Elder length, osd_data->alignment); 680ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 681ec9123c5SAlex Elder BUG_ON(!length); 68290af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 683ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 684ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 68590af3602SAlex Elder ceph_msg_data_add_bio(msg, osd_data->bio, length); 686ec9123c5SAlex Elder #endif 687ec9123c5SAlex Elder } else { 688ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 689ec9123c5SAlex Elder } 690ec9123c5SAlex Elder } 691ec9123c5SAlex Elder 692175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 69379528734SAlex Elder struct ceph_osd_op *dst, unsigned int which) 6943d14c5d2SYehuda Sadeh { 69579528734SAlex Elder struct ceph_osd_req_op *src; 69604017e29SAlex Elder struct ceph_osd_data *osd_data; 69754d50649SAlex Elder u64 request_data_len = 0; 69804017e29SAlex Elder u64 data_length; 699175face2SAlex Elder 70079528734SAlex Elder BUG_ON(which >= req->r_num_ops); 70179528734SAlex Elder src = &req->r_ops[which]; 702a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 703a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 704a8dd0a37SAlex Elder 705a8dd0a37SAlex Elder return 0; 706a8dd0a37SAlex Elder } 7073d14c5d2SYehuda Sadeh 708065a68f9SAlex Elder switch (src->op) { 709fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 71049719778SAlex Elder osd_data = &src->raw_data_in; 71149719778SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 712fbfab539SAlex Elder break; 7133d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 7143d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 715e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 716ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 717ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 718e30b7577SIlya Dryomov if (src->op == CEPH_OSD_OP_WRITE || 719e30b7577SIlya Dryomov src->op == CEPH_OSD_OP_WRITEFULL) 72054d50649SAlex Elder request_data_len = src->extent.length; 721175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 722175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 7233d14c5d2SYehuda Sadeh dst->extent.truncate_size = 7243d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 7253d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 7263d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 72704017e29SAlex Elder osd_data = &src->extent.osd_data; 728e30b7577SIlya Dryomov if (src->op == CEPH_OSD_OP_WRITE || 729e30b7577SIlya Dryomov src->op == CEPH_OSD_OP_WRITEFULL) 73004017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 7315476492fSAlex Elder else 73204017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 7333d14c5d2SYehuda Sadeh break; 7343d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 7353d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 7363d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 73704017e29SAlex Elder osd_data = &src->cls.request_info; 73804017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 73904017e29SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); 74004017e29SAlex Elder request_data_len = osd_data->pagelist->length; 74104017e29SAlex Elder 74204017e29SAlex Elder osd_data = &src->cls.request_data; 74304017e29SAlex Elder data_length = ceph_osd_data_length(osd_data); 74404017e29SAlex Elder if (data_length) { 74504017e29SAlex Elder BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); 74604017e29SAlex Elder dst->cls.indata_len = cpu_to_le32(data_length); 74704017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 748de2aa102SIlya Dryomov src->indata_len += data_length; 74904017e29SAlex Elder request_data_len += data_length; 75004017e29SAlex Elder } 75104017e29SAlex Elder osd_data = &src->cls.response_data; 75204017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 7533d14c5d2SYehuda Sadeh break; 7543d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 7553d14c5d2SYehuda Sadeh break; 756a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 757a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 758a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 759a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 760a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 761a40c4f10SYehuda Sadeh break; 762c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 763c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 764c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 765c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 766c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 767c647b8a8SIlya Dryomov break; 768d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 769d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 770d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 771d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 772d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 773d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 774d74b50beSYan, Zheng osd_data = &src->xattr.osd_data; 775d74b50beSYan, Zheng ceph_osdc_msg_data_add(req->r_request, osd_data); 776d74b50beSYan, Zheng request_data_len = osd_data->pagelist->length; 777d74b50beSYan, Zheng break; 778864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 779864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 780864e9197SYan, Zheng break; 7813d14c5d2SYehuda Sadeh default: 7824c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 7838f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 7844c46459cSAlex Elder WARN_ON(1); 785a8dd0a37SAlex Elder 786a8dd0a37SAlex Elder return 0; 7873d14c5d2SYehuda Sadeh } 7887b25bf5fSIlya Dryomov 789a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 7907b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 791de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 792175face2SAlex Elder 79354d50649SAlex Elder return request_data_len; 7943d14c5d2SYehuda Sadeh } 7953d14c5d2SYehuda Sadeh 7963d14c5d2SYehuda Sadeh /* 7973d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 7983d14c5d2SYehuda Sadeh * extent as needed. 7993d14c5d2SYehuda Sadeh * 8003d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 8013d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 8023d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 8033d14c5d2SYehuda Sadeh * 8043d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 8053d14c5d2SYehuda Sadeh * data quickly. 8063d14c5d2SYehuda Sadeh */ 8073d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 8083d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 8093d14c5d2SYehuda Sadeh struct ceph_vino vino, 810715e4cd4SYan, Zheng u64 off, u64 *plen, 811715e4cd4SYan, Zheng unsigned int which, int num_ops, 8123d14c5d2SYehuda Sadeh int opcode, int flags, 8133d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 8143d14c5d2SYehuda Sadeh u32 truncate_seq, 8153d14c5d2SYehuda Sadeh u64 truncate_size, 816153e5167SAlex Elder bool use_mempool) 8173d14c5d2SYehuda Sadeh { 8183d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 81975d1c941SAlex Elder u64 objnum = 0; 82075d1c941SAlex Elder u64 objoff = 0; 82175d1c941SAlex Elder u64 objlen = 0; 8226816282dSSage Weil int r; 8233d14c5d2SYehuda Sadeh 824ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 825864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 826864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 8273d14c5d2SYehuda Sadeh 828acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 829ae7ca4a3SAlex Elder GFP_NOFS); 83013d1ad16SIlya Dryomov if (!req) { 83113d1ad16SIlya Dryomov r = -ENOMEM; 83213d1ad16SIlya Dryomov goto fail; 83313d1ad16SIlya Dryomov } 83479528734SAlex Elder 835d178a9e7SAlex Elder req->r_flags = flags; 8363d14c5d2SYehuda Sadeh 8373d14c5d2SYehuda Sadeh /* calculate max write size */ 838a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 83913d1ad16SIlya Dryomov if (r) 84013d1ad16SIlya Dryomov goto fail; 841a19dadfbSAlex Elder 842864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 843144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 844864e9197SYan, Zheng } else { 845864e9197SYan, Zheng u32 object_size = le32_to_cpu(layout->fl_object_size); 846864e9197SYan, Zheng u32 object_base = off - objoff; 847ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 848d18d1e28SAlex Elder if (truncate_size <= object_base) { 849d18d1e28SAlex Elder truncate_size = 0; 850d18d1e28SAlex Elder } else { 851d18d1e28SAlex Elder truncate_size -= object_base; 852d18d1e28SAlex Elder if (truncate_size > object_size) 853d18d1e28SAlex Elder truncate_size = object_size; 854d18d1e28SAlex Elder } 855ccca4e37SYan, Zheng } 856715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 857b0270324SAlex Elder truncate_size, truncate_seq); 858864e9197SYan, Zheng } 859d18d1e28SAlex Elder 8603c972c95SIlya Dryomov req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); 861d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 862dbe0fc41SAlex Elder 86313d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 86413d1ad16SIlya Dryomov if (r) 86513d1ad16SIlya Dryomov goto fail; 86613d1ad16SIlya Dryomov 8673d14c5d2SYehuda Sadeh return req; 86813d1ad16SIlya Dryomov 86913d1ad16SIlya Dryomov fail: 87013d1ad16SIlya Dryomov ceph_osdc_put_request(req); 87113d1ad16SIlya Dryomov return ERR_PTR(r); 8723d14c5d2SYehuda Sadeh } 8733d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 8743d14c5d2SYehuda Sadeh 8753d14c5d2SYehuda Sadeh /* 8763d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 8773d14c5d2SYehuda Sadeh */ 8783d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 8793d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 8803d14c5d2SYehuda Sadeh { 8813d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 8823d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 8833d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 8843d14c5d2SYehuda Sadeh 8853d14c5d2SYehuda Sadeh while (*p) { 8863d14c5d2SYehuda Sadeh parent = *p; 8873d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 8883d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 8893d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 8903d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 8913d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 8923d14c5d2SYehuda Sadeh else 8933d14c5d2SYehuda Sadeh BUG(); 8943d14c5d2SYehuda Sadeh } 8953d14c5d2SYehuda Sadeh 8963d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 8973d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 8983d14c5d2SYehuda Sadeh } 8993d14c5d2SYehuda Sadeh 9003d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 9013d14c5d2SYehuda Sadeh u64 tid) 9023d14c5d2SYehuda Sadeh { 9033d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 9043d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 9053d14c5d2SYehuda Sadeh 9063d14c5d2SYehuda Sadeh while (n) { 9073d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 9083d14c5d2SYehuda Sadeh if (tid < req->r_tid) 9093d14c5d2SYehuda Sadeh n = n->rb_left; 9103d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 9113d14c5d2SYehuda Sadeh n = n->rb_right; 9123d14c5d2SYehuda Sadeh else 9133d14c5d2SYehuda Sadeh return req; 9143d14c5d2SYehuda Sadeh } 9153d14c5d2SYehuda Sadeh return NULL; 9163d14c5d2SYehuda Sadeh } 9173d14c5d2SYehuda Sadeh 9183d14c5d2SYehuda Sadeh static struct ceph_osd_request * 9193d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 9203d14c5d2SYehuda Sadeh u64 tid) 9213d14c5d2SYehuda Sadeh { 9223d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 9233d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 9243d14c5d2SYehuda Sadeh 9253d14c5d2SYehuda Sadeh while (n) { 9263d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 9273d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 9283d14c5d2SYehuda Sadeh if (!n->rb_left) 9293d14c5d2SYehuda Sadeh return req; 9303d14c5d2SYehuda Sadeh n = n->rb_left; 9313d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 9323d14c5d2SYehuda Sadeh n = n->rb_right; 9333d14c5d2SYehuda Sadeh } else { 9343d14c5d2SYehuda Sadeh return req; 9353d14c5d2SYehuda Sadeh } 9363d14c5d2SYehuda Sadeh } 9373d14c5d2SYehuda Sadeh return NULL; 9383d14c5d2SYehuda Sadeh } 9393d14c5d2SYehuda Sadeh 9402cc6128aSIlya Dryomov static void __kick_linger_request(struct ceph_osd_request *req) 9412cc6128aSIlya Dryomov { 9422cc6128aSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 9432cc6128aSIlya Dryomov struct ceph_osd *osd = req->r_osd; 9442cc6128aSIlya Dryomov 9452cc6128aSIlya Dryomov /* 9462cc6128aSIlya Dryomov * Linger requests need to be resent with a new tid to avoid 9472cc6128aSIlya Dryomov * the dup op detection logic on the OSDs. Achieve this with 9482cc6128aSIlya Dryomov * a re-register dance instead of open-coding. 9492cc6128aSIlya Dryomov */ 9502cc6128aSIlya Dryomov ceph_osdc_get_request(req); 9512cc6128aSIlya Dryomov if (!list_empty(&req->r_linger_item)) 9522cc6128aSIlya Dryomov __unregister_linger_request(osdc, req); 9532cc6128aSIlya Dryomov else 9542cc6128aSIlya Dryomov __unregister_request(osdc, req); 9552cc6128aSIlya Dryomov __register_request(osdc, req); 9562cc6128aSIlya Dryomov ceph_osdc_put_request(req); 9572cc6128aSIlya Dryomov 9582cc6128aSIlya Dryomov /* 9592cc6128aSIlya Dryomov * Unless request has been registered as both normal and 9602cc6128aSIlya Dryomov * lingering, __unregister{,_linger}_request clears r_osd. 9612cc6128aSIlya Dryomov * However, here we need to preserve r_osd to make sure we 9622cc6128aSIlya Dryomov * requeue on the same OSD. 9632cc6128aSIlya Dryomov */ 9642cc6128aSIlya Dryomov WARN_ON(req->r_osd || !osd); 9652cc6128aSIlya Dryomov req->r_osd = osd; 9662cc6128aSIlya Dryomov 9672cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, req->r_tid); 9682cc6128aSIlya Dryomov __enqueue_request(req); 9692cc6128aSIlya Dryomov } 9702cc6128aSIlya Dryomov 9716f6c7006SSage Weil /* 9726f6c7006SSage Weil * Resubmit requests pending on the given osd. 9736f6c7006SSage Weil */ 9746f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 9756f6c7006SSage Weil struct ceph_osd *osd) 9766f6c7006SSage Weil { 977a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 978e02493c0SAlex Elder LIST_HEAD(resend); 9792cc6128aSIlya Dryomov LIST_HEAD(resend_linger); 9806f6c7006SSage Weil int err; 9816f6c7006SSage Weil 9822cc6128aSIlya Dryomov dout("%s osd%d\n", __func__, osd->o_osd); 9836f6c7006SSage Weil err = __reset_osd(osdc, osd); 984685a7555SAlex Elder if (err) 9856f6c7006SSage Weil return; 9862cc6128aSIlya Dryomov 987e02493c0SAlex Elder /* 988e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 989e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 990e02493c0SAlex Elder * sent in tid order, and that is also the order they're 991e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 992e02493c0SAlex Elder * flight will be found first, followed by all requests that 993e02493c0SAlex Elder * have not yet been sent. And to resend requests while 994e02493c0SAlex Elder * preserving this order we will want to put any sent 995e02493c0SAlex Elder * requests back on the front of the osd client's unsent 996e02493c0SAlex Elder * list. 997e02493c0SAlex Elder * 998e02493c0SAlex Elder * So we build a separate ordered list of already-sent 999e02493c0SAlex Elder * requests for the affected osd and splice it onto the 1000e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 1001e02493c0SAlex Elder * request that has not yet been sent we're done. Those 1002e02493c0SAlex Elder * requests are already sitting right where they belong. 1003e02493c0SAlex Elder */ 10046f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 1005e02493c0SAlex Elder if (!req->r_sent) 1006e02493c0SAlex Elder break; 10072cc6128aSIlya Dryomov 10082cc6128aSIlya Dryomov if (!req->r_linger) { 10092cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, 10102cc6128aSIlya Dryomov req->r_tid); 1011e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 10126f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 10132cc6128aSIlya Dryomov } else { 10142cc6128aSIlya Dryomov list_move_tail(&req->r_req_lru_item, &resend_linger); 10152cc6128aSIlya Dryomov } 10166f6c7006SSage Weil } 1017e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 1018a40c4f10SYehuda Sadeh 1019e02493c0SAlex Elder /* 10202cc6128aSIlya Dryomov * Both registered and not yet registered linger requests are 10212cc6128aSIlya Dryomov * enqueued with a new tid on the same OSD. We add/move them 10222cc6128aSIlya Dryomov * to req_unsent/o_requests at the end to keep things in tid 10232cc6128aSIlya Dryomov * order. 1024e02493c0SAlex Elder */ 1025a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 10261d0326b1SIlya Dryomov r_linger_osd_item) { 10272cc6128aSIlya Dryomov WARN_ON(!list_empty(&req->r_req_lru_item)); 10282cc6128aSIlya Dryomov __kick_linger_request(req); 1029a40c4f10SYehuda Sadeh } 10302cc6128aSIlya Dryomov 10312cc6128aSIlya Dryomov list_for_each_entry_safe(req, nreq, &resend_linger, r_req_lru_item) 10322cc6128aSIlya Dryomov __kick_linger_request(req); 10336f6c7006SSage Weil } 10346f6c7006SSage Weil 10353d14c5d2SYehuda Sadeh /* 10363d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 10373d14c5d2SYehuda Sadeh */ 10383d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 10393d14c5d2SYehuda Sadeh { 10403d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 10413d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 10423d14c5d2SYehuda Sadeh 10433d14c5d2SYehuda Sadeh if (!osd) 10443d14c5d2SYehuda Sadeh return; 10453d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 10463d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 10473d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 104883aff95eSSage Weil mutex_lock(&osdc->request_mutex); 104983aff95eSSage Weil __kick_osd_requests(osdc, osd); 1050f9d25199SAlex Elder __send_queued(osdc); 105183aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 10523d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 10533d14c5d2SYehuda Sadeh } 10543d14c5d2SYehuda Sadeh 10553d14c5d2SYehuda Sadeh /* 10563d14c5d2SYehuda Sadeh * Track open sessions with osds. 10573d14c5d2SYehuda Sadeh */ 1058e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 10593d14c5d2SYehuda Sadeh { 10603d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10613d14c5d2SYehuda Sadeh 10623d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 10633d14c5d2SYehuda Sadeh if (!osd) 10643d14c5d2SYehuda Sadeh return NULL; 10653d14c5d2SYehuda Sadeh 10663d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 10673d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1068e10006f8SAlex Elder osd->o_osd = onum; 1069f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 10703d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 1071a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 10723d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 10733d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 10743d14c5d2SYehuda Sadeh 1075b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 10763d14c5d2SYehuda Sadeh 10773d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 10783d14c5d2SYehuda Sadeh return osd; 10793d14c5d2SYehuda Sadeh } 10803d14c5d2SYehuda Sadeh 10813d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 10823d14c5d2SYehuda Sadeh { 10833d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 10843d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 10853d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 10863d14c5d2SYehuda Sadeh return osd; 10873d14c5d2SYehuda Sadeh } else { 10883d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 10893d14c5d2SYehuda Sadeh return NULL; 10903d14c5d2SYehuda Sadeh } 10913d14c5d2SYehuda Sadeh } 10923d14c5d2SYehuda Sadeh 10933d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 10943d14c5d2SYehuda Sadeh { 10953d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 10963d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 1097b28ec2f3SIlya Dryomov if (atomic_dec_and_test(&osd->o_ref)) { 1098b28ec2f3SIlya Dryomov if (osd->o_auth.authorizer) 10996c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 11003d14c5d2SYehuda Sadeh kfree(osd); 11013d14c5d2SYehuda Sadeh } 11023d14c5d2SYehuda Sadeh } 11033d14c5d2SYehuda Sadeh 11043d14c5d2SYehuda Sadeh /* 11053d14c5d2SYehuda Sadeh * remove an osd from our map 11063d14c5d2SYehuda Sadeh */ 11073d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 11083d14c5d2SYehuda Sadeh { 11097eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 1110cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_requests)); 1111cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_linger_requests)); 11127c6e6fc5SIlya Dryomov 11133d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 11147eb71e03SIlya Dryomov rb_erase(&osd->o_node, &osdc->osds); 11157eb71e03SIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 11167eb71e03SIlya Dryomov } 11177eb71e03SIlya Dryomov 11187eb71e03SIlya Dryomov static void remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 11197eb71e03SIlya Dryomov { 11207eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 11217eb71e03SIlya Dryomov 11227eb71e03SIlya Dryomov if (!RB_EMPTY_NODE(&osd->o_node)) { 11233d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 11247eb71e03SIlya Dryomov __remove_osd(osdc, osd); 11253d14c5d2SYehuda Sadeh put_osd(osd); 11263d14c5d2SYehuda Sadeh } 11277eb71e03SIlya Dryomov } 11283d14c5d2SYehuda Sadeh 11293d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 11303d14c5d2SYehuda Sadeh struct ceph_osd *osd) 11313d14c5d2SYehuda Sadeh { 1132bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 11333d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1134bbf37ec3SIlya Dryomov 11353d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 1136a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 11373d14c5d2SYehuda Sadeh } 11383d14c5d2SYehuda Sadeh 1139bbf37ec3SIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd_client *osdc, 1140bbf37ec3SIlya Dryomov struct ceph_osd *osd) 1141bbf37ec3SIlya Dryomov { 1142bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 1143bbf37ec3SIlya Dryomov 1144bbf37ec3SIlya Dryomov if (list_empty(&osd->o_requests) && 1145bbf37ec3SIlya Dryomov list_empty(&osd->o_linger_requests)) 1146bbf37ec3SIlya Dryomov __move_osd_to_lru(osdc, osd); 1147bbf37ec3SIlya Dryomov } 1148bbf37ec3SIlya Dryomov 11493d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 11503d14c5d2SYehuda Sadeh { 11513d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 11523d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 11533d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 11543d14c5d2SYehuda Sadeh } 11553d14c5d2SYehuda Sadeh 11563d14c5d2SYehuda Sadeh /* 11573d14c5d2SYehuda Sadeh * reset osd connect 11583d14c5d2SYehuda Sadeh */ 11593d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 11603d14c5d2SYehuda Sadeh { 1161c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 11623d14c5d2SYehuda Sadeh 11633d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 1164a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 1165a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 11667eb71e03SIlya Dryomov remove_osd(osdc, osd); 1167c3acb181SAlex Elder return -ENODEV; 1168c3acb181SAlex Elder } 1169c3acb181SAlex Elder 1170c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 1171c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 11723d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 1173c3acb181SAlex Elder struct ceph_osd_request *req; 1174c3acb181SAlex Elder 11753d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 11760b4af2e8SIlya Dryomov "letting msgr retry\n"); 11773d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 11783d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 11793d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1180c3acb181SAlex Elder 1181c3acb181SAlex Elder return -EAGAIN; 11823d14c5d2SYehuda Sadeh } 1183c3acb181SAlex Elder 1184c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1185c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1186c3acb181SAlex Elder osd->o_incarnation++; 1187c3acb181SAlex Elder 1188c3acb181SAlex Elder return 0; 11893d14c5d2SYehuda Sadeh } 11903d14c5d2SYehuda Sadeh 11913d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 11923d14c5d2SYehuda Sadeh { 11933d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 11943d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 11953d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 11963d14c5d2SYehuda Sadeh 1197aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 11983d14c5d2SYehuda Sadeh while (*p) { 11993d14c5d2SYehuda Sadeh parent = *p; 12003d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 12013d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 12023d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 12033d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 12043d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 12053d14c5d2SYehuda Sadeh else 12063d14c5d2SYehuda Sadeh BUG(); 12073d14c5d2SYehuda Sadeh } 12083d14c5d2SYehuda Sadeh 12093d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 12103d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 12113d14c5d2SYehuda Sadeh } 12123d14c5d2SYehuda Sadeh 12133d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 12143d14c5d2SYehuda Sadeh { 12153d14c5d2SYehuda Sadeh struct ceph_osd *osd; 12163d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 12173d14c5d2SYehuda Sadeh 12183d14c5d2SYehuda Sadeh while (n) { 12193d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 12203d14c5d2SYehuda Sadeh if (o < osd->o_osd) 12213d14c5d2SYehuda Sadeh n = n->rb_left; 12223d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 12233d14c5d2SYehuda Sadeh n = n->rb_right; 12243d14c5d2SYehuda Sadeh else 12253d14c5d2SYehuda Sadeh return osd; 12263d14c5d2SYehuda Sadeh } 12273d14c5d2SYehuda Sadeh return NULL; 12283d14c5d2SYehuda Sadeh } 12293d14c5d2SYehuda Sadeh 12303d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 12313d14c5d2SYehuda Sadeh { 12323d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 1233a319bf56SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 12343d14c5d2SYehuda Sadeh } 12353d14c5d2SYehuda Sadeh 12363d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 12373d14c5d2SYehuda Sadeh { 12383d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 12393d14c5d2SYehuda Sadeh } 12403d14c5d2SYehuda Sadeh 12413d14c5d2SYehuda Sadeh /* 12423d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 12433d14c5d2SYehuda Sadeh * the timeout event. 12443d14c5d2SYehuda Sadeh */ 1245a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 12463d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 12473d14c5d2SYehuda Sadeh { 12483d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 12493d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 125077f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 12513d14c5d2SYehuda Sadeh __insert_request(osdc, req); 12523d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 12533d14c5d2SYehuda Sadeh osdc->num_requests++; 12543d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 12553d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 12563d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 12573d14c5d2SYehuda Sadeh } 1258a40c4f10SYehuda Sadeh } 1259a40c4f10SYehuda Sadeh 12603d14c5d2SYehuda Sadeh /* 12613d14c5d2SYehuda Sadeh * called under osdc->request_mutex 12623d14c5d2SYehuda Sadeh */ 12633d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 12643d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 12653d14c5d2SYehuda Sadeh { 126635f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 126735f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 126835f9f8a0SSage Weil req, req->r_tid); 126935f9f8a0SSage Weil return; 127035f9f8a0SSage Weil } 127135f9f8a0SSage Weil 12723d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 12733d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 12746562d661SIlya Dryomov RB_CLEAR_NODE(&req->r_node); 12753d14c5d2SYehuda Sadeh osdc->num_requests--; 12763d14c5d2SYehuda Sadeh 12773d14c5d2SYehuda Sadeh if (req->r_osd) { 12783d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 12796740a845SAlex Elder ceph_msg_revoke(req->r_request); 12803d14c5d2SYehuda Sadeh 12813d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1282bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 12834f23409eSIlya Dryomov if (list_empty(&req->r_linger_osd_item)) 12843d14c5d2SYehuda Sadeh req->r_osd = NULL; 12853d14c5d2SYehuda Sadeh } 12863d14c5d2SYehuda Sadeh 12877d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 12883d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 12893d14c5d2SYehuda Sadeh 12903d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 12913d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 12923d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 12933d14c5d2SYehuda Sadeh } 12943d14c5d2SYehuda Sadeh } 12953d14c5d2SYehuda Sadeh 12963d14c5d2SYehuda Sadeh /* 12973d14c5d2SYehuda Sadeh * Cancel a previously queued request message 12983d14c5d2SYehuda Sadeh */ 12993d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 13003d14c5d2SYehuda Sadeh { 13013d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 13026740a845SAlex Elder ceph_msg_revoke(req->r_request); 13033d14c5d2SYehuda Sadeh req->r_sent = 0; 13043d14c5d2SYehuda Sadeh } 13053d14c5d2SYehuda Sadeh } 13063d14c5d2SYehuda Sadeh 1307a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1308a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1309a40c4f10SYehuda Sadeh { 1310af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1311af593064SIlya Dryomov WARN_ON(!req->r_linger); 1312af593064SIlya Dryomov 131396e4dac6SAlex Elder ceph_osdc_get_request(req); 1314a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 13156194ea89SSage Weil if (req->r_osd) 13161d0326b1SIlya Dryomov list_add_tail(&req->r_linger_osd_item, 13176194ea89SSage Weil &req->r_osd->o_linger_requests); 1318a40c4f10SYehuda Sadeh } 1319a40c4f10SYehuda Sadeh 1320a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1321a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1322a40c4f10SYehuda Sadeh { 1323af593064SIlya Dryomov WARN_ON(!req->r_linger); 1324af593064SIlya Dryomov 1325af593064SIlya Dryomov if (list_empty(&req->r_linger_item)) { 1326af593064SIlya Dryomov dout("%s %p tid %llu not registered\n", __func__, req, 1327af593064SIlya Dryomov req->r_tid); 1328af593064SIlya Dryomov return; 1329af593064SIlya Dryomov } 1330af593064SIlya Dryomov 1331af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1332a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 1333af593064SIlya Dryomov 133461c74035SAlex Elder if (req->r_osd) { 13351d0326b1SIlya Dryomov list_del_init(&req->r_linger_osd_item); 1336bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 1337fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1338a40c4f10SYehuda Sadeh req->r_osd = NULL; 1339a40c4f10SYehuda Sadeh } 134096e4dac6SAlex Elder ceph_osdc_put_request(req); 1341a40c4f10SYehuda Sadeh } 1342a40c4f10SYehuda Sadeh 1343a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1344a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1345a40c4f10SYehuda Sadeh { 1346a40c4f10SYehuda Sadeh if (!req->r_linger) { 1347a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1348a40c4f10SYehuda Sadeh req->r_linger = 1; 1349a40c4f10SYehuda Sadeh } 1350a40c4f10SYehuda Sadeh } 1351a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1352a40c4f10SYehuda Sadeh 13533d14c5d2SYehuda Sadeh /* 1354d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1355d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1356d29adb34SJosh Durgin * 1357d29adb34SJosh Durgin * Caller should hold map_sem for read. 1358d29adb34SJosh Durgin */ 1359d29adb34SJosh Durgin static bool __req_should_be_paused(struct ceph_osd_client *osdc, 1360d29adb34SJosh Durgin struct ceph_osd_request *req) 1361d29adb34SJosh Durgin { 1362d29adb34SJosh Durgin bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 1363d29adb34SJosh Durgin bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 1364d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 1365d29adb34SJosh Durgin return (req->r_flags & CEPH_OSD_FLAG_READ && pauserd) || 1366d29adb34SJosh Durgin (req->r_flags & CEPH_OSD_FLAG_WRITE && pausewr); 1367d29adb34SJosh Durgin } 1368d29adb34SJosh Durgin 1369d29adb34SJosh Durgin /* 137017a13e40SIlya Dryomov * Calculate mapping of a request to a PG. Takes tiering into account. 137117a13e40SIlya Dryomov */ 137217a13e40SIlya Dryomov static int __calc_request_pg(struct ceph_osdmap *osdmap, 137317a13e40SIlya Dryomov struct ceph_osd_request *req, 137417a13e40SIlya Dryomov struct ceph_pg *pg_out) 137517a13e40SIlya Dryomov { 1376205ee118SIlya Dryomov bool need_check_tiering; 1377205ee118SIlya Dryomov 1378205ee118SIlya Dryomov need_check_tiering = false; 1379205ee118SIlya Dryomov if (req->r_target_oloc.pool == -1) { 1380205ee118SIlya Dryomov req->r_target_oloc = req->r_base_oloc; /* struct */ 1381205ee118SIlya Dryomov need_check_tiering = true; 1382205ee118SIlya Dryomov } 1383d30291b9SIlya Dryomov if (ceph_oid_empty(&req->r_target_oid)) { 1384205ee118SIlya Dryomov ceph_oid_copy(&req->r_target_oid, &req->r_base_oid); 1385205ee118SIlya Dryomov need_check_tiering = true; 1386205ee118SIlya Dryomov } 1387205ee118SIlya Dryomov 1388205ee118SIlya Dryomov if (need_check_tiering && 1389205ee118SIlya Dryomov (req->r_flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 139017a13e40SIlya Dryomov struct ceph_pg_pool_info *pi; 139117a13e40SIlya Dryomov 1392205ee118SIlya Dryomov pi = ceph_pg_pool_by_id(osdmap, req->r_target_oloc.pool); 139317a13e40SIlya Dryomov if (pi) { 139417a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_READ) && 139517a13e40SIlya Dryomov pi->read_tier >= 0) 1396205ee118SIlya Dryomov req->r_target_oloc.pool = pi->read_tier; 139717a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 139817a13e40SIlya Dryomov pi->write_tier >= 0) 1399205ee118SIlya Dryomov req->r_target_oloc.pool = pi->write_tier; 140017a13e40SIlya Dryomov } 140117a13e40SIlya Dryomov /* !pi is caught in ceph_oloc_oid_to_pg() */ 140217a13e40SIlya Dryomov } 140317a13e40SIlya Dryomov 1404205ee118SIlya Dryomov return ceph_oloc_oid_to_pg(osdmap, &req->r_target_oloc, 1405205ee118SIlya Dryomov &req->r_target_oid, pg_out); 140617a13e40SIlya Dryomov } 140717a13e40SIlya Dryomov 1408f671b581SIlya Dryomov static void __enqueue_request(struct ceph_osd_request *req) 1409f671b581SIlya Dryomov { 1410f671b581SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 1411f671b581SIlya Dryomov 1412f671b581SIlya Dryomov dout("%s %p tid %llu to osd%d\n", __func__, req, req->r_tid, 1413f671b581SIlya Dryomov req->r_osd ? req->r_osd->o_osd : -1); 1414f671b581SIlya Dryomov 1415f671b581SIlya Dryomov if (req->r_osd) { 1416f671b581SIlya Dryomov __remove_osd_from_lru(req->r_osd); 1417f671b581SIlya Dryomov list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1418f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 1419f671b581SIlya Dryomov } else { 1420f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 1421f671b581SIlya Dryomov } 1422f671b581SIlya Dryomov } 1423f671b581SIlya Dryomov 142417a13e40SIlya Dryomov /* 14253d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 14263d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 142725985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 14286f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 14293d14c5d2SYehuda Sadeh * 14303d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 14313d14c5d2SYehuda Sadeh * 14323d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 14333d14c5d2SYehuda Sadeh */ 14346f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 143538d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 14363d14c5d2SYehuda Sadeh { 14375b191d99SSage Weil struct ceph_pg pgid; 14383d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 14398008ab10SIlya Dryomov int num, o; 14403d14c5d2SYehuda Sadeh int err; 1441d29adb34SJosh Durgin bool was_paused; 14423d14c5d2SYehuda Sadeh 14436f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 144417a13e40SIlya Dryomov 144517a13e40SIlya Dryomov err = __calc_request_pg(osdc->osdmap, req, &pgid); 14466f6c7006SSage Weil if (err) { 14476f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 14483d14c5d2SYehuda Sadeh return err; 14496f6c7006SSage Weil } 14503d14c5d2SYehuda Sadeh req->r_pgid = pgid; 14513d14c5d2SYehuda Sadeh 14528008ab10SIlya Dryomov num = ceph_calc_pg_acting(osdc->osdmap, pgid, acting, &o); 14538008ab10SIlya Dryomov if (num < 0) 14548008ab10SIlya Dryomov num = 0; 14553d14c5d2SYehuda Sadeh 1456d29adb34SJosh Durgin was_paused = req->r_paused; 1457d29adb34SJosh Durgin req->r_paused = __req_should_be_paused(osdc, req); 1458d29adb34SJosh Durgin if (was_paused && !req->r_paused) 1459d29adb34SJosh Durgin force_resend = 1; 1460d29adb34SJosh Durgin 146138d6453cSSage Weil if ((!force_resend && 146238d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 14633d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 14643d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 14653d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 1466d29adb34SJosh Durgin (req->r_osd == NULL && o == -1) || 1467d29adb34SJosh Durgin req->r_paused) 14683d14c5d2SYehuda Sadeh return 0; /* no change */ 14693d14c5d2SYehuda Sadeh 14705b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 14715b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 14723d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 14733d14c5d2SYehuda Sadeh 14743d14c5d2SYehuda Sadeh /* record full pg acting set */ 14753d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 14763d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 14773d14c5d2SYehuda Sadeh 14783d14c5d2SYehuda Sadeh if (req->r_osd) { 14793d14c5d2SYehuda Sadeh __cancel_request(req); 14803d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1481a390de02SIlya Dryomov list_del_init(&req->r_linger_osd_item); 14823d14c5d2SYehuda Sadeh req->r_osd = NULL; 14833d14c5d2SYehuda Sadeh } 14843d14c5d2SYehuda Sadeh 14853d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 14863d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 14873d14c5d2SYehuda Sadeh err = -ENOMEM; 1488e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 14896f6c7006SSage Weil if (!req->r_osd) { 14906f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 14913d14c5d2SYehuda Sadeh goto out; 14926f6c7006SSage Weil } 14933d14c5d2SYehuda Sadeh 14946f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 14953d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 14963d14c5d2SYehuda Sadeh 1497b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1498b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1499b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 15003d14c5d2SYehuda Sadeh } 15013d14c5d2SYehuda Sadeh 1502f671b581SIlya Dryomov __enqueue_request(req); 15033d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 15043d14c5d2SYehuda Sadeh 15053d14c5d2SYehuda Sadeh out: 15063d14c5d2SYehuda Sadeh return err; 15073d14c5d2SYehuda Sadeh } 15083d14c5d2SYehuda Sadeh 15093d14c5d2SYehuda Sadeh /* 15103d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 15113d14c5d2SYehuda Sadeh */ 151256e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 15133d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 15143d14c5d2SYehuda Sadeh { 15151b83bef2SSage Weil void *p; 15163d14c5d2SYehuda Sadeh 15171b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 15181b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 15191b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 15203d14c5d2SYehuda Sadeh 15211b83bef2SSage Weil /* fill in message content that changes each time we send it */ 15221b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 15231b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 1524205ee118SIlya Dryomov put_unaligned_le64(req->r_target_oloc.pool, req->r_request_pool); 15251b83bef2SSage Weil p = req->r_request_pgid; 15261b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 15271b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 15281b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 15291b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 15301b83bef2SSage Weil sizeof(req->r_reassert_version)); 15312169aea6SSage Weil 15323d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 15333d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 15343d14c5d2SYehuda Sadeh 15353d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 153626be8808SAlex Elder 15373d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 153826be8808SAlex Elder 153926be8808SAlex Elder ceph_con_send(&req->r_osd->o_con, req->r_request); 15403d14c5d2SYehuda Sadeh } 15413d14c5d2SYehuda Sadeh 15423d14c5d2SYehuda Sadeh /* 15436f6c7006SSage Weil * Send any requests in the queue (req_unsent). 15446f6c7006SSage Weil */ 1545f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 15466f6c7006SSage Weil { 15476f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 15486f6c7006SSage Weil 1549f9d25199SAlex Elder dout("__send_queued\n"); 1550f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 15516f6c7006SSage Weil __send_request(osdc, req); 15526f6c7006SSage Weil } 15536f6c7006SSage Weil 15546f6c7006SSage Weil /* 15550bbfdfe8SIlya Dryomov * Caller should hold map_sem for read and request_mutex. 15560bbfdfe8SIlya Dryomov */ 15570bbfdfe8SIlya Dryomov static int __ceph_osdc_start_request(struct ceph_osd_client *osdc, 15580bbfdfe8SIlya Dryomov struct ceph_osd_request *req, 15590bbfdfe8SIlya Dryomov bool nofail) 15600bbfdfe8SIlya Dryomov { 15610bbfdfe8SIlya Dryomov int rc; 15620bbfdfe8SIlya Dryomov 15630bbfdfe8SIlya Dryomov __register_request(osdc, req); 15640bbfdfe8SIlya Dryomov req->r_sent = 0; 15650bbfdfe8SIlya Dryomov req->r_got_reply = 0; 15660bbfdfe8SIlya Dryomov rc = __map_request(osdc, req, 0); 15670bbfdfe8SIlya Dryomov if (rc < 0) { 15680bbfdfe8SIlya Dryomov if (nofail) { 15690bbfdfe8SIlya Dryomov dout("osdc_start_request failed map, " 15700bbfdfe8SIlya Dryomov " will retry %lld\n", req->r_tid); 15710bbfdfe8SIlya Dryomov rc = 0; 15720bbfdfe8SIlya Dryomov } else { 15730bbfdfe8SIlya Dryomov __unregister_request(osdc, req); 15740bbfdfe8SIlya Dryomov } 15750bbfdfe8SIlya Dryomov return rc; 15760bbfdfe8SIlya Dryomov } 15770bbfdfe8SIlya Dryomov 15780bbfdfe8SIlya Dryomov if (req->r_osd == NULL) { 15790bbfdfe8SIlya Dryomov dout("send_request %p no up osds in pg\n", req); 15800bbfdfe8SIlya Dryomov ceph_monc_request_next_osdmap(&osdc->client->monc); 15810bbfdfe8SIlya Dryomov } else { 15820bbfdfe8SIlya Dryomov __send_queued(osdc); 15830bbfdfe8SIlya Dryomov } 15840bbfdfe8SIlya Dryomov 15850bbfdfe8SIlya Dryomov return 0; 15860bbfdfe8SIlya Dryomov } 15870bbfdfe8SIlya Dryomov 15880bbfdfe8SIlya Dryomov /* 15893d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 15903d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 15913d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 15923d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 15933d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 15943d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 15953d14c5d2SYehuda Sadeh * there are no open requests). 15963d14c5d2SYehuda Sadeh */ 15973d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 15983d14c5d2SYehuda Sadeh { 15993d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 16003d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 1601a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 160283aff95eSSage Weil struct ceph_osd_request *req; 16033d14c5d2SYehuda Sadeh struct ceph_osd *osd; 16043d14c5d2SYehuda Sadeh struct list_head slow_osds; 16053d14c5d2SYehuda Sadeh dout("timeout\n"); 16063d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 16073d14c5d2SYehuda Sadeh 16083d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 16093d14c5d2SYehuda Sadeh 16103d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 16113d14c5d2SYehuda Sadeh 16123d14c5d2SYehuda Sadeh /* 16133d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 16143d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 16153d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 16163d14c5d2SYehuda Sadeh */ 16173d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 16183d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 1619a319bf56SIlya Dryomov if (time_before(jiffies, 1620a319bf56SIlya Dryomov req->r_stamp + opts->osd_keepalive_timeout)) 16213d14c5d2SYehuda Sadeh break; 16223d14c5d2SYehuda Sadeh 16233d14c5d2SYehuda Sadeh osd = req->r_osd; 16243d14c5d2SYehuda Sadeh BUG_ON(!osd); 16253d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 16263d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 16273d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 16283d14c5d2SYehuda Sadeh } 16293d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 16303d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 16313d14c5d2SYehuda Sadeh o_keepalive_item); 16323d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 16333d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 16343d14c5d2SYehuda Sadeh } 16353d14c5d2SYehuda Sadeh 16363d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1637f9d25199SAlex Elder __send_queued(osdc); 16383d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 16393d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16403d14c5d2SYehuda Sadeh } 16413d14c5d2SYehuda Sadeh 16423d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 16433d14c5d2SYehuda Sadeh { 16443d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 16453d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 16463d14c5d2SYehuda Sadeh osds_timeout_work.work); 1647a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 164842a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 16493d14c5d2SYehuda Sadeh 165042a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 16513d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 165242a2c09fSIlya Dryomov mutex_lock(&osdc->request_mutex); 16533d14c5d2SYehuda Sadeh 165442a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 165542a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 165642a2c09fSIlya Dryomov break; 165742a2c09fSIlya Dryomov 165842a2c09fSIlya Dryomov remove_osd(osdc, osd); 165942a2c09fSIlya Dryomov } 166042a2c09fSIlya Dryomov 166142a2c09fSIlya Dryomov mutex_unlock(&osdc->request_mutex); 166242a2c09fSIlya Dryomov up_read(&osdc->map_sem); 16633d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 16643d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 16653d14c5d2SYehuda Sadeh } 16663d14c5d2SYehuda Sadeh 1667205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 1668205ee118SIlya Dryomov struct ceph_object_locator *oloc) 1669205ee118SIlya Dryomov { 1670205ee118SIlya Dryomov u8 struct_v, struct_cv; 1671205ee118SIlya Dryomov u32 len; 1672205ee118SIlya Dryomov void *struct_end; 1673205ee118SIlya Dryomov int ret = 0; 1674205ee118SIlya Dryomov 1675205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1676205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1677205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1678205ee118SIlya Dryomov if (struct_v < 3) { 1679205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 1680205ee118SIlya Dryomov struct_v, struct_cv); 1681205ee118SIlya Dryomov goto e_inval; 1682205ee118SIlya Dryomov } 1683205ee118SIlya Dryomov if (struct_cv > 6) { 1684205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 1685205ee118SIlya Dryomov struct_v, struct_cv); 1686205ee118SIlya Dryomov goto e_inval; 1687205ee118SIlya Dryomov } 1688205ee118SIlya Dryomov len = ceph_decode_32(p); 1689205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1690205ee118SIlya Dryomov struct_end = *p + len; 1691205ee118SIlya Dryomov 1692205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 1693205ee118SIlya Dryomov *p += 4; /* skip preferred */ 1694205ee118SIlya Dryomov 1695205ee118SIlya Dryomov len = ceph_decode_32(p); 1696205ee118SIlya Dryomov if (len > 0) { 1697205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 1698205ee118SIlya Dryomov goto e_inval; 1699205ee118SIlya Dryomov } 1700205ee118SIlya Dryomov 1701205ee118SIlya Dryomov if (struct_v >= 5) { 1702205ee118SIlya Dryomov len = ceph_decode_32(p); 1703205ee118SIlya Dryomov if (len > 0) { 1704205ee118SIlya Dryomov pr_warn("ceph_object_locator::nspace is set\n"); 1705205ee118SIlya Dryomov goto e_inval; 1706205ee118SIlya Dryomov } 1707205ee118SIlya Dryomov } 1708205ee118SIlya Dryomov 1709205ee118SIlya Dryomov if (struct_v >= 6) { 1710205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 1711205ee118SIlya Dryomov if (hash != -1) { 1712205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 1713205ee118SIlya Dryomov goto e_inval; 1714205ee118SIlya Dryomov } 1715205ee118SIlya Dryomov } 1716205ee118SIlya Dryomov 1717205ee118SIlya Dryomov /* skip the rest */ 1718205ee118SIlya Dryomov *p = struct_end; 1719205ee118SIlya Dryomov out: 1720205ee118SIlya Dryomov return ret; 1721205ee118SIlya Dryomov 1722205ee118SIlya Dryomov e_inval: 1723205ee118SIlya Dryomov ret = -EINVAL; 1724205ee118SIlya Dryomov goto out; 1725205ee118SIlya Dryomov } 1726205ee118SIlya Dryomov 1727205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 1728205ee118SIlya Dryomov struct ceph_request_redirect *redir) 1729205ee118SIlya Dryomov { 1730205ee118SIlya Dryomov u8 struct_v, struct_cv; 1731205ee118SIlya Dryomov u32 len; 1732205ee118SIlya Dryomov void *struct_end; 1733205ee118SIlya Dryomov int ret; 1734205ee118SIlya Dryomov 1735205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1736205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1737205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1738205ee118SIlya Dryomov if (struct_cv > 1) { 1739205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 1740205ee118SIlya Dryomov struct_v, struct_cv); 1741205ee118SIlya Dryomov goto e_inval; 1742205ee118SIlya Dryomov } 1743205ee118SIlya Dryomov len = ceph_decode_32(p); 1744205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1745205ee118SIlya Dryomov struct_end = *p + len; 1746205ee118SIlya Dryomov 1747205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 1748205ee118SIlya Dryomov if (ret) 1749205ee118SIlya Dryomov goto out; 1750205ee118SIlya Dryomov 1751205ee118SIlya Dryomov len = ceph_decode_32(p); 1752205ee118SIlya Dryomov if (len > 0) { 1753205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 1754205ee118SIlya Dryomov goto e_inval; 1755205ee118SIlya Dryomov } 1756205ee118SIlya Dryomov 1757205ee118SIlya Dryomov len = ceph_decode_32(p); 1758205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 1759205ee118SIlya Dryomov 1760205ee118SIlya Dryomov /* skip the rest */ 1761205ee118SIlya Dryomov *p = struct_end; 1762205ee118SIlya Dryomov out: 1763205ee118SIlya Dryomov return ret; 1764205ee118SIlya Dryomov 1765205ee118SIlya Dryomov e_inval: 1766205ee118SIlya Dryomov ret = -EINVAL; 1767205ee118SIlya Dryomov goto out; 1768205ee118SIlya Dryomov } 1769205ee118SIlya Dryomov 177025845472SSage Weil static void complete_request(struct ceph_osd_request *req) 177125845472SSage Weil { 177225845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 177325845472SSage Weil } 177425845472SSage Weil 17753d14c5d2SYehuda Sadeh /* 17763d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 17773d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 17783d14c5d2SYehuda Sadeh */ 177970cf052dSShraddha Barke static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg) 17803d14c5d2SYehuda Sadeh { 17811b83bef2SSage Weil void *p, *end; 17823d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1783205ee118SIlya Dryomov struct ceph_request_redirect redir; 17843d14c5d2SYehuda Sadeh u64 tid; 17851b83bef2SSage Weil int object_len; 178679528734SAlex Elder unsigned int numops; 178779528734SAlex Elder int payload_len, flags; 17883d14c5d2SYehuda Sadeh s32 result; 17891b83bef2SSage Weil s32 retry_attempt; 17901b83bef2SSage Weil struct ceph_pg pg; 17911b83bef2SSage Weil int err; 17921b83bef2SSage Weil u32 reassert_epoch; 17931b83bef2SSage Weil u64 reassert_version; 17941b83bef2SSage Weil u32 osdmap_epoch; 17950d5af164SAlex Elder int already_completed; 17969fc6e064SAlex Elder u32 bytes; 1797b0b31a8fSIlya Dryomov u8 decode_redir; 179879528734SAlex Elder unsigned int i; 17993d14c5d2SYehuda Sadeh 18003d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 18011b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 18021b83bef2SSage Weil 18031b83bef2SSage Weil p = msg->front.iov_base; 18041b83bef2SSage Weil end = p + msg->front.iov_len; 18051b83bef2SSage Weil 18061b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 18071b83bef2SSage Weil object_len = ceph_decode_32(&p); 18081b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 18091b83bef2SSage Weil p += object_len; 18101b83bef2SSage Weil 1811ef4859d6SAlex Elder err = ceph_decode_pgid(&p, end, &pg); 18121b83bef2SSage Weil if (err) 18133d14c5d2SYehuda Sadeh goto bad; 18141b83bef2SSage Weil 18151b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 18161b83bef2SSage Weil flags = ceph_decode_64(&p); 18171b83bef2SSage Weil result = ceph_decode_32(&p); 18181b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 18191b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 18201b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 18211b83bef2SSage Weil 18223d14c5d2SYehuda Sadeh /* lookup */ 1823ff513aceSIlya Dryomov down_read(&osdc->map_sem); 18243d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 18253d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 18263d14c5d2SYehuda Sadeh if (req == NULL) { 18273d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 18288058fd45SAlex Elder goto bad_mutex; 18293d14c5d2SYehuda Sadeh } 18303d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 18311b83bef2SSage Weil 18321b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 18331b83bef2SSage Weil req, result); 18341b83bef2SSage Weil 183518741196SDan Carpenter ceph_decode_need(&p, end, 4, bad_put); 18361b83bef2SSage Weil numops = ceph_decode_32(&p); 18373f1af42aSIlya Dryomov if (numops > CEPH_OSD_MAX_OPS) 18381b83bef2SSage Weil goto bad_put; 18391b83bef2SSage Weil if (numops != req->r_num_ops) 18401b83bef2SSage Weil goto bad_put; 18411b83bef2SSage Weil payload_len = 0; 184218741196SDan Carpenter ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put); 18431b83bef2SSage Weil for (i = 0; i < numops; i++) { 18441b83bef2SSage Weil struct ceph_osd_op *op = p; 18451b83bef2SSage Weil int len; 18461b83bef2SSage Weil 18471b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 18487665d85bSYan, Zheng req->r_ops[i].outdata_len = len; 18491b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 18501b83bef2SSage Weil payload_len += len; 18511b83bef2SSage Weil p += sizeof(*op); 18521b83bef2SSage Weil } 18539fc6e064SAlex Elder bytes = le32_to_cpu(msg->hdr.data_len); 18549fc6e064SAlex Elder if (payload_len != bytes) { 1855b9a67899SJoe Perches pr_warn("sum of op payload lens %d != data_len %d\n", 18569fc6e064SAlex Elder payload_len, bytes); 18571b83bef2SSage Weil goto bad_put; 18581b83bef2SSage Weil } 18591b83bef2SSage Weil 186018741196SDan Carpenter ceph_decode_need(&p, end, 4 + numops * 4, bad_put); 18611b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 18621b83bef2SSage Weil for (i = 0; i < numops; i++) 18637665d85bSYan, Zheng req->r_ops[i].rval = ceph_decode_32(&p); 18643d14c5d2SYehuda Sadeh 1865205ee118SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 6) { 1866205ee118SIlya Dryomov p += 8 + 4; /* skip replay_version */ 1867205ee118SIlya Dryomov p += 8; /* skip user_version */ 1868205ee118SIlya Dryomov 1869b0b31a8fSIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 7) 1870b0b31a8fSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, bad_put); 1871b0b31a8fSIlya Dryomov else 1872b0b31a8fSIlya Dryomov decode_redir = 1; 1873b0b31a8fSIlya Dryomov } else { 1874b0b31a8fSIlya Dryomov decode_redir = 0; 1875b0b31a8fSIlya Dryomov } 1876b0b31a8fSIlya Dryomov 1877b0b31a8fSIlya Dryomov if (decode_redir) { 1878205ee118SIlya Dryomov err = ceph_redirect_decode(&p, end, &redir); 1879205ee118SIlya Dryomov if (err) 1880205ee118SIlya Dryomov goto bad_put; 1881205ee118SIlya Dryomov } else { 1882205ee118SIlya Dryomov redir.oloc.pool = -1; 1883205ee118SIlya Dryomov } 1884205ee118SIlya Dryomov 1885205ee118SIlya Dryomov if (redir.oloc.pool != -1) { 1886205ee118SIlya Dryomov dout("redirect pool %lld\n", redir.oloc.pool); 1887205ee118SIlya Dryomov 1888205ee118SIlya Dryomov __unregister_request(osdc, req); 1889205ee118SIlya Dryomov 1890205ee118SIlya Dryomov req->r_target_oloc = redir.oloc; /* struct */ 1891205ee118SIlya Dryomov 1892205ee118SIlya Dryomov /* 1893205ee118SIlya Dryomov * Start redirect requests with nofail=true. If 1894205ee118SIlya Dryomov * mapping fails, request will end up on the notarget 1895205ee118SIlya Dryomov * list, waiting for the new osdmap (which can take 1896205ee118SIlya Dryomov * a while), even though the original request mapped 1897205ee118SIlya Dryomov * successfully. In the future we might want to follow 1898205ee118SIlya Dryomov * original request's nofail setting here. 1899205ee118SIlya Dryomov */ 1900ff513aceSIlya Dryomov err = __ceph_osdc_start_request(osdc, req, true); 1901205ee118SIlya Dryomov BUG_ON(err); 1902205ee118SIlya Dryomov 1903ff513aceSIlya Dryomov goto out_unlock; 1904205ee118SIlya Dryomov } 1905205ee118SIlya Dryomov 1906eb845ff1SYan, Zheng already_completed = req->r_got_reply; 19073d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 19081b83bef2SSage Weil req->r_result = result; 19093d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 19103d14c5d2SYehuda Sadeh bytes); 19113d14c5d2SYehuda Sadeh if (req->r_result == 0) 19123d14c5d2SYehuda Sadeh req->r_result = bytes; 19133d14c5d2SYehuda Sadeh 19143d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 19151b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 19161b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 19173d14c5d2SYehuda Sadeh 19183d14c5d2SYehuda Sadeh req->r_got_reply = 1; 19193d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 19203d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 1921ff513aceSIlya Dryomov goto out_unlock; 19223d14c5d2SYehuda Sadeh } 19233d14c5d2SYehuda Sadeh 19243d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 19253d14c5d2SYehuda Sadeh 1926a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1927a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1928a40c4f10SYehuda Sadeh 19293d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 19303d14c5d2SYehuda Sadeh if (result < 0 || 19313d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 19323d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 19333d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 19343d14c5d2SYehuda Sadeh 19353d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1936ff513aceSIlya Dryomov up_read(&osdc->map_sem); 19373d14c5d2SYehuda Sadeh 1938eb845ff1SYan, Zheng if (!already_completed) { 193961c5d6bfSYan, Zheng if (req->r_unsafe_callback && 194061c5d6bfSYan, Zheng result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK)) 194161c5d6bfSYan, Zheng req->r_unsafe_callback(req, true); 19423d14c5d2SYehuda Sadeh if (req->r_callback) 19433d14c5d2SYehuda Sadeh req->r_callback(req, msg); 19443d14c5d2SYehuda Sadeh else 19453d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 1946eb845ff1SYan, Zheng } 19473d14c5d2SYehuda Sadeh 194861c5d6bfSYan, Zheng if (flags & CEPH_OSD_FLAG_ONDISK) { 194961c5d6bfSYan, Zheng if (req->r_unsafe_callback && already_completed) 195061c5d6bfSYan, Zheng req->r_unsafe_callback(req, false); 195125845472SSage Weil complete_request(req); 195261c5d6bfSYan, Zheng } 19533d14c5d2SYehuda Sadeh 1954ff513aceSIlya Dryomov out: 1955a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 19563d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 19573d14c5d2SYehuda Sadeh return; 1958ff513aceSIlya Dryomov out_unlock: 1959ff513aceSIlya Dryomov mutex_unlock(&osdc->request_mutex); 1960ff513aceSIlya Dryomov up_read(&osdc->map_sem); 1961ff513aceSIlya Dryomov goto out; 19623d14c5d2SYehuda Sadeh 19631b83bef2SSage Weil bad_put: 196437c89bdeSLi Wang req->r_result = -EIO; 196537c89bdeSLi Wang __unregister_request(osdc, req); 196637c89bdeSLi Wang if (req->r_callback) 196737c89bdeSLi Wang req->r_callback(req, msg); 196837c89bdeSLi Wang else 196937c89bdeSLi Wang complete_all(&req->r_completion); 197037c89bdeSLi Wang complete_request(req); 19711b83bef2SSage Weil ceph_osdc_put_request(req); 19728058fd45SAlex Elder bad_mutex: 19738058fd45SAlex Elder mutex_unlock(&osdc->request_mutex); 1974ff513aceSIlya Dryomov up_read(&osdc->map_sem); 19753d14c5d2SYehuda Sadeh bad: 19761b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 19771b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 19783d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 19793d14c5d2SYehuda Sadeh } 19803d14c5d2SYehuda Sadeh 19816f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 19823d14c5d2SYehuda Sadeh { 19833d14c5d2SYehuda Sadeh struct rb_node *p, *n; 19843d14c5d2SYehuda Sadeh 19857eb71e03SIlya Dryomov dout("%s %p\n", __func__, osdc); 19863d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 19876f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 19883d14c5d2SYehuda Sadeh 19893d14c5d2SYehuda Sadeh n = rb_next(p); 19903d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 19913d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 19923d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 19933d14c5d2SYehuda Sadeh osd->o_osd), 19943d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 19953d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 19963d14c5d2SYehuda Sadeh } 19973d14c5d2SYehuda Sadeh } 19983d14c5d2SYehuda Sadeh 19993d14c5d2SYehuda Sadeh /* 20006f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 20016f6c7006SSage Weil * no osd, request a new map. 20023d14c5d2SYehuda Sadeh * 2003e6d50f67SAlex Elder * Caller should hold map_sem for read. 20043d14c5d2SYehuda Sadeh */ 20059a1ea2dbSJosh Durgin static void kick_requests(struct ceph_osd_client *osdc, bool force_resend, 20069a1ea2dbSJosh Durgin bool force_resend_writes) 20073d14c5d2SYehuda Sadeh { 2008a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 20096f6c7006SSage Weil struct rb_node *p; 20106f6c7006SSage Weil int needmap = 0; 20116f6c7006SSage Weil int err; 20129a1ea2dbSJosh Durgin bool force_resend_req; 20133d14c5d2SYehuda Sadeh 20149a1ea2dbSJosh Durgin dout("kick_requests %s %s\n", force_resend ? " (force resend)" : "", 20159a1ea2dbSJosh Durgin force_resend_writes ? " (force resend writes)" : ""); 20163d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 20176194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 20186f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 20196194ea89SSage Weil p = rb_next(p); 2020ab60b16dSAlex Elder 2021ab60b16dSAlex Elder /* 2022ab60b16dSAlex Elder * For linger requests that have not yet been 2023ab60b16dSAlex Elder * registered, move them to the linger list; they'll 2024ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 2025ab60b16dSAlex Elder * the request before re-registering it as a linger 2026ab60b16dSAlex Elder * request to ensure the __map_request() below 2027ab60b16dSAlex Elder * will decide it needs to be sent. 2028ab60b16dSAlex Elder */ 2029ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 2030ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 2031ab60b16dSAlex Elder req, req->r_tid, 2032ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 203396e4dac6SAlex Elder ceph_osdc_get_request(req); 2034ab60b16dSAlex Elder __unregister_request(osdc, req); 2035ab60b16dSAlex Elder __register_linger_request(osdc, req); 203696e4dac6SAlex Elder ceph_osdc_put_request(req); 2037ab60b16dSAlex Elder continue; 2038ab60b16dSAlex Elder } 2039ab60b16dSAlex Elder 20409a1ea2dbSJosh Durgin force_resend_req = force_resend || 20419a1ea2dbSJosh Durgin (force_resend_writes && 20429a1ea2dbSJosh Durgin req->r_flags & CEPH_OSD_FLAG_WRITE); 20439a1ea2dbSJosh Durgin err = __map_request(osdc, req, force_resend_req); 20446f6c7006SSage Weil if (err < 0) 20456f6c7006SSage Weil continue; /* error */ 20466f6c7006SSage Weil if (req->r_osd == NULL) { 20476f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 20486f6c7006SSage Weil needmap++; /* request a newer map */ 20496f6c7006SSage Weil } else if (err > 0) { 20506194ea89SSage Weil if (!req->r_linger) { 20516194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 20526194ea89SSage Weil req->r_tid, 20536f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 20546f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 20556f6c7006SSage Weil } 20566f6c7006SSage Weil } 20576194ea89SSage Weil } 2058a40c4f10SYehuda Sadeh 2059a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 2060a40c4f10SYehuda Sadeh r_linger_item) { 2061a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 2062a40c4f10SYehuda Sadeh 20639a1ea2dbSJosh Durgin err = __map_request(osdc, req, 20649a1ea2dbSJosh Durgin force_resend || force_resend_writes); 2065ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 2066a40c4f10SYehuda Sadeh if (err < 0) 2067a40c4f10SYehuda Sadeh continue; /* hrm! */ 2068b0494532SIlya Dryomov if (req->r_osd == NULL || err > 0) { 2069a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 2070b0494532SIlya Dryomov dout("lingering %p tid %llu maps to no osd\n", 2071b0494532SIlya Dryomov req, req->r_tid); 2072b0494532SIlya Dryomov /* 2073b0494532SIlya Dryomov * A homeless lingering request makes 2074b0494532SIlya Dryomov * no sense, as it's job is to keep 2075b0494532SIlya Dryomov * a particular OSD connection open. 2076b0494532SIlya Dryomov * Request a newer map and kick the 2077b0494532SIlya Dryomov * request, knowing that it won't be 2078b0494532SIlya Dryomov * resent until we actually get a map 2079b0494532SIlya Dryomov * that can tell us where to send it. 2080b0494532SIlya Dryomov */ 2081b0494532SIlya Dryomov needmap++; 2082a40c4f10SYehuda Sadeh } 2083a40c4f10SYehuda Sadeh 2084b0494532SIlya Dryomov dout("kicking lingering %p tid %llu osd%d\n", req, 2085b0494532SIlya Dryomov req->r_tid, req->r_osd ? req->r_osd->o_osd : -1); 2086a40c4f10SYehuda Sadeh __register_request(osdc, req); 2087c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 2088a40c4f10SYehuda Sadeh } 2089b0494532SIlya Dryomov } 209014d2f38dSAlex Elder reset_changed_osds(osdc); 20913d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 20923d14c5d2SYehuda Sadeh 20933d14c5d2SYehuda Sadeh if (needmap) { 20943d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 20953d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 20963d14c5d2SYehuda Sadeh } 20973d14c5d2SYehuda Sadeh } 20986f6c7006SSage Weil 20996f6c7006SSage Weil 21003d14c5d2SYehuda Sadeh /* 21013d14c5d2SYehuda Sadeh * Process updated osd map. 21023d14c5d2SYehuda Sadeh * 21033d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 21043d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 21053d14c5d2SYehuda Sadeh * off to different OSDs as needed. 21063d14c5d2SYehuda Sadeh */ 21073d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 21083d14c5d2SYehuda Sadeh { 21093d14c5d2SYehuda Sadeh void *p, *end, *next; 21103d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 21113d14c5d2SYehuda Sadeh u32 epoch; 21123d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 21133d14c5d2SYehuda Sadeh int err; 21143d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 21159a1ea2dbSJosh Durgin bool was_full; 21163d14c5d2SYehuda Sadeh 21173d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 21183d14c5d2SYehuda Sadeh p = msg->front.iov_base; 21193d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 21203d14c5d2SYehuda Sadeh 21213d14c5d2SYehuda Sadeh /* verify fsid */ 21223d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 21233d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 21243d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 21253d14c5d2SYehuda Sadeh return; 21263d14c5d2SYehuda Sadeh 21273d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 21283d14c5d2SYehuda Sadeh 21299a1ea2dbSJosh Durgin was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 21309a1ea2dbSJosh Durgin 21313d14c5d2SYehuda Sadeh /* incremental maps */ 21323d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 21333d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 21343d14c5d2SYehuda Sadeh while (nr_maps > 0) { 21353d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 21363d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 21373d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 21383d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 21393d14c5d2SYehuda Sadeh next = p + maplen; 21403d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 21413d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 21423d14c5d2SYehuda Sadeh epoch, maplen); 21433d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 21440c0a8de1SIlya Dryomov osdc->osdmap); 21453d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 21463d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 21473d14c5d2SYehuda Sadeh goto bad; 21483d14c5d2SYehuda Sadeh } 21493d14c5d2SYehuda Sadeh BUG_ON(!newmap); 21503d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 21513d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 21523d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 21533d14c5d2SYehuda Sadeh } 21549a1ea2dbSJosh Durgin was_full = was_full || 21559a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 21569a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 21579a1ea2dbSJosh Durgin kick_requests(osdc, 0, was_full); 21583d14c5d2SYehuda Sadeh } else { 21593d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 21603d14c5d2SYehuda Sadeh epoch, maplen); 21613d14c5d2SYehuda Sadeh } 21623d14c5d2SYehuda Sadeh p = next; 21633d14c5d2SYehuda Sadeh nr_maps--; 21643d14c5d2SYehuda Sadeh } 21653d14c5d2SYehuda Sadeh if (newmap) 21663d14c5d2SYehuda Sadeh goto done; 21673d14c5d2SYehuda Sadeh 21683d14c5d2SYehuda Sadeh /* full maps */ 21693d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 21703d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 21713d14c5d2SYehuda Sadeh while (nr_maps) { 21723d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 21733d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 21743d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 21753d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 21763d14c5d2SYehuda Sadeh if (nr_maps > 1) { 21773d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 21783d14c5d2SYehuda Sadeh epoch, maplen); 21793d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 21803d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 21813d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 21823d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 21833d14c5d2SYehuda Sadeh } else { 218438d6453cSSage Weil int skipped_map = 0; 218538d6453cSSage Weil 21863d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 2187a2505d63SIlya Dryomov newmap = ceph_osdmap_decode(&p, p+maplen); 21883d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 21893d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 21903d14c5d2SYehuda Sadeh goto bad; 21913d14c5d2SYehuda Sadeh } 21923d14c5d2SYehuda Sadeh BUG_ON(!newmap); 21933d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 21943d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 219538d6453cSSage Weil if (oldmap) { 219638d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 219738d6453cSSage Weil skipped_map = 1; 21983d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 219938d6453cSSage Weil } 22009a1ea2dbSJosh Durgin was_full = was_full || 22019a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 22029a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 22039a1ea2dbSJosh Durgin kick_requests(osdc, skipped_map, was_full); 22043d14c5d2SYehuda Sadeh } 22053d14c5d2SYehuda Sadeh p += maplen; 22063d14c5d2SYehuda Sadeh nr_maps--; 22073d14c5d2SYehuda Sadeh } 22083d14c5d2SYehuda Sadeh 2209b72e19b9SDan Carpenter if (!osdc->osdmap) 2210b72e19b9SDan Carpenter goto bad; 22113d14c5d2SYehuda Sadeh done: 22123d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 221382dcabadSIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 221482dcabadSIlya Dryomov osdc->osdmap->epoch); 2215cd634fb6SSage Weil 2216cd634fb6SSage Weil /* 2217cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 2218cd634fb6SSage Weil * we find out when we are no longer full and stop returning 2219cd634fb6SSage Weil * ENOSPC. 2220cd634fb6SSage Weil */ 2221d29adb34SJosh Durgin if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 2222d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || 2223d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) 2224cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 2225cd634fb6SSage Weil 2226f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 2227f9d25199SAlex Elder __send_queued(osdc); 2228f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 22293d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 22303d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 22313d14c5d2SYehuda Sadeh return; 22323d14c5d2SYehuda Sadeh 22333d14c5d2SYehuda Sadeh bad: 22343d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 22353d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 22363d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 22373d14c5d2SYehuda Sadeh } 22383d14c5d2SYehuda Sadeh 22393d14c5d2SYehuda Sadeh /* 2240a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 2241a40c4f10SYehuda Sadeh * 2242a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 2243a40c4f10SYehuda Sadeh */ 2244a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 2245a40c4f10SYehuda Sadeh { 2246a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 2247a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 2248a40c4f10SYehuda Sadeh 2249a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 2250a40c4f10SYehuda Sadeh kfree(event); 2251a40c4f10SYehuda Sadeh } 2252a40c4f10SYehuda Sadeh 2253a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 2254a40c4f10SYehuda Sadeh { 2255a40c4f10SYehuda Sadeh kref_get(&event->kref); 2256a40c4f10SYehuda Sadeh } 2257a40c4f10SYehuda Sadeh 2258a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 2259a40c4f10SYehuda Sadeh { 2260a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 2261a40c4f10SYehuda Sadeh } 2262a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 2263a40c4f10SYehuda Sadeh 2264a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 2265a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 2266a40c4f10SYehuda Sadeh { 2267a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2268a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2269a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2270a40c4f10SYehuda Sadeh 2271a40c4f10SYehuda Sadeh while (*p) { 2272a40c4f10SYehuda Sadeh parent = *p; 2273a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2274a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 2275a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2276a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 2277a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2278a40c4f10SYehuda Sadeh else 2279a40c4f10SYehuda Sadeh BUG(); 2280a40c4f10SYehuda Sadeh } 2281a40c4f10SYehuda Sadeh 2282a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 2283a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 2284a40c4f10SYehuda Sadeh } 2285a40c4f10SYehuda Sadeh 2286a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 2287a40c4f10SYehuda Sadeh u64 cookie) 2288a40c4f10SYehuda Sadeh { 2289a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2290a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2291a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2292a40c4f10SYehuda Sadeh 2293a40c4f10SYehuda Sadeh while (*p) { 2294a40c4f10SYehuda Sadeh parent = *p; 2295a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2296a40c4f10SYehuda Sadeh if (cookie < event->cookie) 2297a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2298a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 2299a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2300a40c4f10SYehuda Sadeh else 2301a40c4f10SYehuda Sadeh return event; 2302a40c4f10SYehuda Sadeh } 2303a40c4f10SYehuda Sadeh return NULL; 2304a40c4f10SYehuda Sadeh } 2305a40c4f10SYehuda Sadeh 2306a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 2307a40c4f10SYehuda Sadeh { 2308a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2309a40c4f10SYehuda Sadeh 2310a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 2311a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 2312a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 2313a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2314a40c4f10SYehuda Sadeh } else { 2315a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 2316a40c4f10SYehuda Sadeh } 2317a40c4f10SYehuda Sadeh } 2318a40c4f10SYehuda Sadeh 2319a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 2320a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 23213c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 2322a40c4f10SYehuda Sadeh { 2323a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2324a40c4f10SYehuda Sadeh 2325a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 2326a40c4f10SYehuda Sadeh if (!event) 2327a40c4f10SYehuda Sadeh return -ENOMEM; 2328a40c4f10SYehuda Sadeh 2329a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 2330a40c4f10SYehuda Sadeh event->cb = event_cb; 23313c663bbdSAlex Elder event->one_shot = 0; 2332a40c4f10SYehuda Sadeh event->data = data; 2333a40c4f10SYehuda Sadeh event->osdc = osdc; 2334a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 23353ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 2336a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 2337a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 2338a40c4f10SYehuda Sadeh 2339a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2340a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 2341a40c4f10SYehuda Sadeh __insert_event(osdc, event); 2342a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2343a40c4f10SYehuda Sadeh 2344a40c4f10SYehuda Sadeh *pevent = event; 2345a40c4f10SYehuda Sadeh return 0; 2346a40c4f10SYehuda Sadeh } 2347a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 2348a40c4f10SYehuda Sadeh 2349a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 2350a40c4f10SYehuda Sadeh { 2351a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2352a40c4f10SYehuda Sadeh 2353a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 2354a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2355a40c4f10SYehuda Sadeh __remove_event(event); 2356a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2357a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 2358a40c4f10SYehuda Sadeh } 2359a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 2360a40c4f10SYehuda Sadeh 2361a40c4f10SYehuda Sadeh 2362a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 2363a40c4f10SYehuda Sadeh { 2364a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 2365a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 2366a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 2367a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 2368a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 2369a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 2370a40c4f10SYehuda Sadeh 2371a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 2372a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 2373a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 2374a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2375a40c4f10SYehuda Sadeh kfree(event_work); 2376a40c4f10SYehuda Sadeh } 2377a40c4f10SYehuda Sadeh 2378a40c4f10SYehuda Sadeh 2379a40c4f10SYehuda Sadeh /* 2380a40c4f10SYehuda Sadeh * Process osd watch notifications 2381a40c4f10SYehuda Sadeh */ 23823c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 23833c663bbdSAlex Elder struct ceph_msg *msg) 2384a40c4f10SYehuda Sadeh { 2385a40c4f10SYehuda Sadeh void *p, *end; 2386a40c4f10SYehuda Sadeh u8 proto_ver; 2387a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 2388a40c4f10SYehuda Sadeh u8 opcode; 2389a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2390a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 2391a40c4f10SYehuda Sadeh 2392a40c4f10SYehuda Sadeh p = msg->front.iov_base; 2393a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 2394a40c4f10SYehuda Sadeh 2395a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 2396a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 2397a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 2398a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 2399a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 2400a40c4f10SYehuda Sadeh 2401a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2402a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 2403a40c4f10SYehuda Sadeh if (event) { 24043c663bbdSAlex Elder BUG_ON(event->one_shot); 2405a40c4f10SYehuda Sadeh get_event(event); 2406a40c4f10SYehuda Sadeh } 2407a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2408a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 2409a40c4f10SYehuda Sadeh cookie, ver, event); 2410a40c4f10SYehuda Sadeh if (event) { 2411a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 2412a40c4f10SYehuda Sadeh if (!event_work) { 241391883cd2SIlya Dryomov pr_err("couldn't allocate event_work\n"); 241491883cd2SIlya Dryomov ceph_osdc_put_event(event); 241591883cd2SIlya Dryomov return; 2416a40c4f10SYehuda Sadeh } 24176b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 2418a40c4f10SYehuda Sadeh event_work->event = event; 2419a40c4f10SYehuda Sadeh event_work->ver = ver; 2420a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 2421a40c4f10SYehuda Sadeh event_work->opcode = opcode; 242291883cd2SIlya Dryomov 242391883cd2SIlya Dryomov queue_work(osdc->notify_wq, &event_work->work); 2424a40c4f10SYehuda Sadeh } 2425a40c4f10SYehuda Sadeh 2426a40c4f10SYehuda Sadeh return; 2427a40c4f10SYehuda Sadeh 2428a40c4f10SYehuda Sadeh bad: 2429a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 2430a40c4f10SYehuda Sadeh } 2431a40c4f10SYehuda Sadeh 2432a40c4f10SYehuda Sadeh /* 2433e65550fdSAlex Elder * build new request AND message 2434e65550fdSAlex Elder * 2435e65550fdSAlex Elder */ 2436e65550fdSAlex Elder void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, 2437e65550fdSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 2438e65550fdSAlex Elder struct timespec *mtime) 2439e65550fdSAlex Elder { 2440e65550fdSAlex Elder struct ceph_msg *msg = req->r_request; 2441e65550fdSAlex Elder void *p; 2442e65550fdSAlex Elder size_t msg_size; 2443e65550fdSAlex Elder int flags = req->r_flags; 2444e65550fdSAlex Elder u64 data_len; 2445e65550fdSAlex Elder unsigned int i; 2446e65550fdSAlex Elder 2447e65550fdSAlex Elder req->r_snapid = snap_id; 244884127282SIlya Dryomov WARN_ON(snapc != req->r_snapc); 2449e65550fdSAlex Elder 2450e65550fdSAlex Elder /* encode request */ 2451e65550fdSAlex Elder msg->hdr.version = cpu_to_le16(4); 2452e65550fdSAlex Elder 2453e65550fdSAlex Elder p = msg->front.iov_base; 2454e65550fdSAlex Elder ceph_encode_32(&p, 1); /* client_inc is always 1 */ 2455e65550fdSAlex Elder req->r_request_osdmap_epoch = p; 2456e65550fdSAlex Elder p += 4; 2457e65550fdSAlex Elder req->r_request_flags = p; 2458e65550fdSAlex Elder p += 4; 2459e65550fdSAlex Elder if (req->r_flags & CEPH_OSD_FLAG_WRITE) 2460e65550fdSAlex Elder ceph_encode_timespec(p, mtime); 2461e65550fdSAlex Elder p += sizeof(struct ceph_timespec); 2462e65550fdSAlex Elder req->r_request_reassert_version = p; 2463e65550fdSAlex Elder p += sizeof(struct ceph_eversion); /* will get filled in */ 2464e65550fdSAlex Elder 2465e65550fdSAlex Elder /* oloc */ 2466e65550fdSAlex Elder ceph_encode_8(&p, 4); 2467e65550fdSAlex Elder ceph_encode_8(&p, 4); 2468e65550fdSAlex Elder ceph_encode_32(&p, 8 + 4 + 4); 2469e65550fdSAlex Elder req->r_request_pool = p; 2470e65550fdSAlex Elder p += 8; 2471e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2472e65550fdSAlex Elder ceph_encode_32(&p, 0); /* key len */ 2473e65550fdSAlex Elder 2474e65550fdSAlex Elder ceph_encode_8(&p, 1); 2475e65550fdSAlex Elder req->r_request_pgid = p; 2476e65550fdSAlex Elder p += 8 + 4; 2477e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2478e65550fdSAlex Elder 2479e65550fdSAlex Elder /* oid */ 24803c972c95SIlya Dryomov ceph_encode_32(&p, req->r_base_oid.name_len); 24813c972c95SIlya Dryomov memcpy(p, req->r_base_oid.name, req->r_base_oid.name_len); 2482d30291b9SIlya Dryomov dout("oid %*pE len %d\n", req->r_base_oid.name_len, 24833c972c95SIlya Dryomov req->r_base_oid.name, req->r_base_oid.name_len); 24843c972c95SIlya Dryomov p += req->r_base_oid.name_len; 2485e65550fdSAlex Elder 2486e65550fdSAlex Elder /* ops--can imply data */ 2487e65550fdSAlex Elder ceph_encode_16(&p, (u16)req->r_num_ops); 2488e65550fdSAlex Elder data_len = 0; 2489e65550fdSAlex Elder for (i = 0; i < req->r_num_ops; i++) { 2490e65550fdSAlex Elder data_len += osd_req_encode_op(req, p, i); 2491e65550fdSAlex Elder p += sizeof(struct ceph_osd_op); 2492e65550fdSAlex Elder } 2493e65550fdSAlex Elder 2494e65550fdSAlex Elder /* snaps */ 2495e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapid); 2496e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 2497e65550fdSAlex Elder ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 2498e65550fdSAlex Elder if (req->r_snapc) { 249984127282SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) { 2500e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc->snaps[i]); 2501e65550fdSAlex Elder } 2502e65550fdSAlex Elder } 2503e65550fdSAlex Elder 2504e65550fdSAlex Elder req->r_request_attempts = p; 2505e65550fdSAlex Elder p += 4; 2506e65550fdSAlex Elder 2507e65550fdSAlex Elder /* data */ 2508e65550fdSAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 2509e65550fdSAlex Elder u16 data_off; 2510e65550fdSAlex Elder 2511e65550fdSAlex Elder /* 2512e65550fdSAlex Elder * The header "data_off" is a hint to the receiver 2513e65550fdSAlex Elder * allowing it to align received data into its 2514e65550fdSAlex Elder * buffers such that there's no need to re-copy 2515e65550fdSAlex Elder * it before writing it to disk (direct I/O). 2516e65550fdSAlex Elder */ 2517e65550fdSAlex Elder data_off = (u16) (off & 0xffff); 2518e65550fdSAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 2519e65550fdSAlex Elder } 2520e65550fdSAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 2521e65550fdSAlex Elder 2522e65550fdSAlex Elder BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 2523e65550fdSAlex Elder msg_size = p - msg->front.iov_base; 2524e65550fdSAlex Elder msg->front.iov_len = msg_size; 2525e65550fdSAlex Elder msg->hdr.front_len = cpu_to_le32(msg_size); 2526e65550fdSAlex Elder 2527e65550fdSAlex Elder dout("build_request msg_size was %d\n", (int)msg_size); 2528e65550fdSAlex Elder } 2529e65550fdSAlex Elder EXPORT_SYMBOL(ceph_osdc_build_request); 2530e65550fdSAlex Elder 2531e65550fdSAlex Elder /* 25323d14c5d2SYehuda Sadeh * Register request, send initial attempt. 25333d14c5d2SYehuda Sadeh */ 25343d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 25353d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 25363d14c5d2SYehuda Sadeh bool nofail) 25373d14c5d2SYehuda Sadeh { 25380bbfdfe8SIlya Dryomov int rc; 25393d14c5d2SYehuda Sadeh 25403d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 25413d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 25420bbfdfe8SIlya Dryomov 25430bbfdfe8SIlya Dryomov rc = __ceph_osdc_start_request(osdc, req, nofail); 25440bbfdfe8SIlya Dryomov 25453d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 25463d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 25470bbfdfe8SIlya Dryomov 25483d14c5d2SYehuda Sadeh return rc; 25493d14c5d2SYehuda Sadeh } 25503d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 25513d14c5d2SYehuda Sadeh 25523d14c5d2SYehuda Sadeh /* 2553c9f9b93dSIlya Dryomov * Unregister a registered request. The request is not completed (i.e. 2554c9f9b93dSIlya Dryomov * no callbacks or wakeups) - higher layers are supposed to know what 2555c9f9b93dSIlya Dryomov * they are canceling. 2556c9f9b93dSIlya Dryomov */ 2557c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 2558c9f9b93dSIlya Dryomov { 2559c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 2560c9f9b93dSIlya Dryomov 2561c9f9b93dSIlya Dryomov mutex_lock(&osdc->request_mutex); 2562c9f9b93dSIlya Dryomov if (req->r_linger) 2563c9f9b93dSIlya Dryomov __unregister_linger_request(osdc, req); 2564c9f9b93dSIlya Dryomov __unregister_request(osdc, req); 2565c9f9b93dSIlya Dryomov mutex_unlock(&osdc->request_mutex); 2566c9f9b93dSIlya Dryomov 2567c9f9b93dSIlya Dryomov dout("%s %p tid %llu canceled\n", __func__, req, req->r_tid); 2568c9f9b93dSIlya Dryomov } 2569c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 2570c9f9b93dSIlya Dryomov 2571c9f9b93dSIlya Dryomov /* 25723d14c5d2SYehuda Sadeh * wait for a request to complete 25733d14c5d2SYehuda Sadeh */ 25743d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 25753d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 25763d14c5d2SYehuda Sadeh { 25773d14c5d2SYehuda Sadeh int rc; 25783d14c5d2SYehuda Sadeh 2579c9f9b93dSIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 2580c9f9b93dSIlya Dryomov 25813d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 25823d14c5d2SYehuda Sadeh if (rc < 0) { 2583c9f9b93dSIlya Dryomov dout("%s %p tid %llu interrupted\n", __func__, req, req->r_tid); 2584c9f9b93dSIlya Dryomov ceph_osdc_cancel_request(req); 258525845472SSage Weil complete_request(req); 25863d14c5d2SYehuda Sadeh return rc; 25873d14c5d2SYehuda Sadeh } 25883d14c5d2SYehuda Sadeh 2589c9f9b93dSIlya Dryomov dout("%s %p tid %llu result %d\n", __func__, req, req->r_tid, 2590c9f9b93dSIlya Dryomov req->r_result); 25913d14c5d2SYehuda Sadeh return req->r_result; 25923d14c5d2SYehuda Sadeh } 25933d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 25943d14c5d2SYehuda Sadeh 25953d14c5d2SYehuda Sadeh /* 25963d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 25973d14c5d2SYehuda Sadeh */ 25983d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 25993d14c5d2SYehuda Sadeh { 26003d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 26013d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 26023d14c5d2SYehuda Sadeh 26033d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 26043d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 26053d14c5d2SYehuda Sadeh while (1) { 26063d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 26073d14c5d2SYehuda Sadeh if (!req) 26083d14c5d2SYehuda Sadeh break; 26093d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 26103d14c5d2SYehuda Sadeh break; 26113d14c5d2SYehuda Sadeh 26123d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 26133d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 26143d14c5d2SYehuda Sadeh continue; 26153d14c5d2SYehuda Sadeh 26163d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 26173d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 26183d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 26193d14c5d2SYehuda Sadeh req->r_tid, last_tid); 26203d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 26213d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 26223d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 26233d14c5d2SYehuda Sadeh } 26243d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 26253d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 26263d14c5d2SYehuda Sadeh } 26273d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 26283d14c5d2SYehuda Sadeh 26293d14c5d2SYehuda Sadeh /* 2630dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 2631dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 2632dd935f44SJosh Durgin */ 2633f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 2634dd935f44SJosh Durgin { 2635dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 2636dd935f44SJosh Durgin } 2637dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 2638dd935f44SJosh Durgin 2639dd935f44SJosh Durgin 2640dd935f44SJosh Durgin /* 26413d14c5d2SYehuda Sadeh * init, shutdown 26423d14c5d2SYehuda Sadeh */ 26433d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 26443d14c5d2SYehuda Sadeh { 26453d14c5d2SYehuda Sadeh int err; 26463d14c5d2SYehuda Sadeh 26473d14c5d2SYehuda Sadeh dout("init\n"); 26483d14c5d2SYehuda Sadeh osdc->client = client; 26493d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 26503d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 26513d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 26523d14c5d2SYehuda Sadeh osdc->last_tid = 0; 26533d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 26543d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 26553d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 26563d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 26576f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 26586f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 2659a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 26603d14c5d2SYehuda Sadeh osdc->num_requests = 0; 26613d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 26623d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2663a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 2664a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 2665a40c4f10SYehuda Sadeh osdc->event_count = 0; 26663d14c5d2SYehuda Sadeh 26673d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 2668a319bf56SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 26693d14c5d2SYehuda Sadeh 26703d14c5d2SYehuda Sadeh err = -ENOMEM; 26719e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 26729e767adbSIlya Dryomov ceph_osd_request_cache); 26733d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 26743d14c5d2SYehuda Sadeh goto out; 26753d14c5d2SYehuda Sadeh 2676d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2677711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op"); 26783d14c5d2SYehuda Sadeh if (err < 0) 26793d14c5d2SYehuda Sadeh goto out_mempool; 2680d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 2681711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op_reply"); 26823d14c5d2SYehuda Sadeh if (err < 0) 26833d14c5d2SYehuda Sadeh goto out_msgpool; 2684a40c4f10SYehuda Sadeh 2685dbcae088SDan Carpenter err = -ENOMEM; 2686a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2687dbcae088SDan Carpenter if (!osdc->notify_wq) 2688c172ec5cSIlya Dryomov goto out_msgpool_reply; 2689c172ec5cSIlya Dryomov 26903d14c5d2SYehuda Sadeh return 0; 26913d14c5d2SYehuda Sadeh 2692c172ec5cSIlya Dryomov out_msgpool_reply: 2693c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 26943d14c5d2SYehuda Sadeh out_msgpool: 26953d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 26963d14c5d2SYehuda Sadeh out_mempool: 26973d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 26983d14c5d2SYehuda Sadeh out: 26993d14c5d2SYehuda Sadeh return err; 27003d14c5d2SYehuda Sadeh } 27013d14c5d2SYehuda Sadeh 27023d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 27033d14c5d2SYehuda Sadeh { 2704a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2705a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 27063d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 27073d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 270842a2c09fSIlya Dryomov 270942a2c09fSIlya Dryomov mutex_lock(&osdc->request_mutex); 271042a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 271142a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 271242a2c09fSIlya Dryomov struct ceph_osd, o_node); 271342a2c09fSIlya Dryomov remove_osd(osdc, osd); 271442a2c09fSIlya Dryomov } 271542a2c09fSIlya Dryomov mutex_unlock(&osdc->request_mutex); 271642a2c09fSIlya Dryomov 27173d14c5d2SYehuda Sadeh if (osdc->osdmap) { 27183d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 27193d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 27203d14c5d2SYehuda Sadeh } 27213d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 27223d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 27233d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 27243d14c5d2SYehuda Sadeh } 27253d14c5d2SYehuda Sadeh 27263d14c5d2SYehuda Sadeh /* 27273d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 27283d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 27293d14c5d2SYehuda Sadeh */ 27303d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 27313d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 27323d14c5d2SYehuda Sadeh u64 off, u64 *plen, 27333d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2734b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 27353d14c5d2SYehuda Sadeh { 27363d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 27373d14c5d2SYehuda Sadeh int rc = 0; 27383d14c5d2SYehuda Sadeh 27393d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 27403d14c5d2SYehuda Sadeh vino.snap, off, *plen); 2741715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 27423d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 2743acead002SAlex Elder NULL, truncate_seq, truncate_size, 2744153e5167SAlex Elder false); 27456816282dSSage Weil if (IS_ERR(req)) 27466816282dSSage Weil return PTR_ERR(req); 27473d14c5d2SYehuda Sadeh 27483d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 27490fff87ecSAlex Elder 2750406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 2751a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 27523d14c5d2SYehuda Sadeh 2753e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 275443bfe5deSAlex Elder off, *plen, *plen, page_align); 27553d14c5d2SYehuda Sadeh 275679528734SAlex Elder ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); 275702ee07d3SAlex Elder 27583d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 27593d14c5d2SYehuda Sadeh if (!rc) 27603d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 27613d14c5d2SYehuda Sadeh 27623d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 27633d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 27643d14c5d2SYehuda Sadeh return rc; 27653d14c5d2SYehuda Sadeh } 27663d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 27673d14c5d2SYehuda Sadeh 27683d14c5d2SYehuda Sadeh /* 27693d14c5d2SYehuda Sadeh * do a synchronous write on N pages 27703d14c5d2SYehuda Sadeh */ 27713d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 27723d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 27733d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 27743d14c5d2SYehuda Sadeh u64 off, u64 len, 27753d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 27763d14c5d2SYehuda Sadeh struct timespec *mtime, 277724808826SAlex Elder struct page **pages, int num_pages) 27783d14c5d2SYehuda Sadeh { 27793d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 27803d14c5d2SYehuda Sadeh int rc = 0; 2781b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 27823d14c5d2SYehuda Sadeh 2783acead002SAlex Elder BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ 2784715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 27853d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 278624808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2787acead002SAlex Elder snapc, truncate_seq, truncate_size, 2788153e5167SAlex Elder true); 27896816282dSSage Weil if (IS_ERR(req)) 27906816282dSSage Weil return PTR_ERR(req); 27913d14c5d2SYehuda Sadeh 27923d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 2793406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 279443bfe5deSAlex Elder false, false); 279543bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 27963d14c5d2SYehuda Sadeh 279779528734SAlex Elder ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); 279802ee07d3SAlex Elder 279987f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 28003d14c5d2SYehuda Sadeh if (!rc) 28013d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 28023d14c5d2SYehuda Sadeh 28033d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 28043d14c5d2SYehuda Sadeh if (rc == 0) 28053d14c5d2SYehuda Sadeh rc = len; 28063d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 28073d14c5d2SYehuda Sadeh return rc; 28083d14c5d2SYehuda Sadeh } 28093d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 28103d14c5d2SYehuda Sadeh 28115522ae0bSAlex Elder int ceph_osdc_setup(void) 28125522ae0bSAlex Elder { 28133f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 28143f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 28153f1af42aSIlya Dryomov 28165522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 28173f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 28183f1af42aSIlya Dryomov 0, 0, NULL); 28195522ae0bSAlex Elder 28205522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 28215522ae0bSAlex Elder } 28225522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 28235522ae0bSAlex Elder 28245522ae0bSAlex Elder void ceph_osdc_cleanup(void) 28255522ae0bSAlex Elder { 28265522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 28275522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 28285522ae0bSAlex Elder ceph_osd_request_cache = NULL; 28295522ae0bSAlex Elder } 28305522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 28315522ae0bSAlex Elder 28323d14c5d2SYehuda Sadeh /* 28333d14c5d2SYehuda Sadeh * handle incoming message 28343d14c5d2SYehuda Sadeh */ 28353d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 28363d14c5d2SYehuda Sadeh { 28373d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28383d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 28393d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 28403d14c5d2SYehuda Sadeh 28413d14c5d2SYehuda Sadeh if (!osd) 28423d14c5d2SYehuda Sadeh goto out; 28433d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 28443d14c5d2SYehuda Sadeh 28453d14c5d2SYehuda Sadeh switch (type) { 28463d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 28473d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 28483d14c5d2SYehuda Sadeh break; 28493d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 285070cf052dSShraddha Barke handle_reply(osdc, msg); 28513d14c5d2SYehuda Sadeh break; 2852a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2853a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2854a40c4f10SYehuda Sadeh break; 28553d14c5d2SYehuda Sadeh 28563d14c5d2SYehuda Sadeh default: 28573d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 28583d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 28593d14c5d2SYehuda Sadeh } 28603d14c5d2SYehuda Sadeh out: 28613d14c5d2SYehuda Sadeh ceph_msg_put(msg); 28623d14c5d2SYehuda Sadeh } 28633d14c5d2SYehuda Sadeh 28643d14c5d2SYehuda Sadeh /* 2865d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 2866d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 2867d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 28683d14c5d2SYehuda Sadeh */ 28693d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 28703d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 28713d14c5d2SYehuda Sadeh int *skip) 28723d14c5d2SYehuda Sadeh { 28733d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28743d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 28753d14c5d2SYehuda Sadeh struct ceph_msg *m; 28763d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 28773f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 28783d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 28793d14c5d2SYehuda Sadeh u64 tid; 28803d14c5d2SYehuda Sadeh 28813d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 28823d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 28833d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 28843d14c5d2SYehuda Sadeh if (!req) { 2885cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 2886cd8140c6SIlya Dryomov osd->o_osd, tid); 28873d14c5d2SYehuda Sadeh m = NULL; 2888d15f9d69SIlya Dryomov *skip = 1; 28893d14c5d2SYehuda Sadeh goto out; 28903d14c5d2SYehuda Sadeh } 28913d14c5d2SYehuda Sadeh 28928921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 28933d14c5d2SYehuda Sadeh 2894f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 2895d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 2896d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 2897d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 28983f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 28993f0a4ac5SIlya Dryomov false); 29003d14c5d2SYehuda Sadeh if (!m) 29013d14c5d2SYehuda Sadeh goto out; 29023d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 29033d14c5d2SYehuda Sadeh req->r_reply = m; 29043d14c5d2SYehuda Sadeh } 29053d14c5d2SYehuda Sadeh 2906d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 2907d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 2908d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 2909d15f9d69SIlya Dryomov req->r_reply->data_length); 29103d14c5d2SYehuda Sadeh m = NULL; 2911d15f9d69SIlya Dryomov *skip = 1; 29123d14c5d2SYehuda Sadeh goto out; 29133d14c5d2SYehuda Sadeh } 2914d15f9d69SIlya Dryomov 2915d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 29163d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 29173d14c5d2SYehuda Sadeh 29183d14c5d2SYehuda Sadeh out: 29193d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 29203d14c5d2SYehuda Sadeh return m; 29213d14c5d2SYehuda Sadeh } 29223d14c5d2SYehuda Sadeh 29233d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 29243d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 29253d14c5d2SYehuda Sadeh int *skip) 29263d14c5d2SYehuda Sadeh { 29273d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29283d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 29293d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 29303d14c5d2SYehuda Sadeh 29311c20f2d2SAlex Elder *skip = 0; 29323d14c5d2SYehuda Sadeh switch (type) { 29333d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2934a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2935b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 29363d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 29373d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 29383d14c5d2SYehuda Sadeh default: 29393d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 29403d14c5d2SYehuda Sadeh osd->o_osd); 29413d14c5d2SYehuda Sadeh *skip = 1; 29423d14c5d2SYehuda Sadeh return NULL; 29433d14c5d2SYehuda Sadeh } 29443d14c5d2SYehuda Sadeh } 29453d14c5d2SYehuda Sadeh 29463d14c5d2SYehuda Sadeh /* 29473d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 29483d14c5d2SYehuda Sadeh */ 29493d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 29503d14c5d2SYehuda Sadeh { 29513d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29523d14c5d2SYehuda Sadeh if (get_osd(osd)) 29533d14c5d2SYehuda Sadeh return con; 29543d14c5d2SYehuda Sadeh return NULL; 29553d14c5d2SYehuda Sadeh } 29563d14c5d2SYehuda Sadeh 29573d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 29583d14c5d2SYehuda Sadeh { 29593d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29603d14c5d2SYehuda Sadeh put_osd(osd); 29613d14c5d2SYehuda Sadeh } 29623d14c5d2SYehuda Sadeh 29633d14c5d2SYehuda Sadeh /* 29643d14c5d2SYehuda Sadeh * authentication 29653d14c5d2SYehuda Sadeh */ 2966a3530df3SAlex Elder /* 2967a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2968a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2969a3530df3SAlex Elder */ 2970a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 29718f43fb53SAlex Elder int *proto, int force_new) 29723d14c5d2SYehuda Sadeh { 29733d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 29743d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 29753d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 297674f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 29773d14c5d2SYehuda Sadeh 297874f1869fSAlex Elder if (force_new && auth->authorizer) { 29796c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 298074f1869fSAlex Elder auth->authorizer = NULL; 29813d14c5d2SYehuda Sadeh } 298227859f97SSage Weil if (!auth->authorizer) { 298327859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2984a3530df3SAlex Elder auth); 29853d14c5d2SYehuda Sadeh if (ret) 2986a3530df3SAlex Elder return ERR_PTR(ret); 298727859f97SSage Weil } else { 298827859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 29890bed9b5cSSage Weil auth); 29900bed9b5cSSage Weil if (ret) 29910bed9b5cSSage Weil return ERR_PTR(ret); 29923d14c5d2SYehuda Sadeh } 29933d14c5d2SYehuda Sadeh *proto = ac->protocol; 299474f1869fSAlex Elder 2995a3530df3SAlex Elder return auth; 29963d14c5d2SYehuda Sadeh } 29973d14c5d2SYehuda Sadeh 29983d14c5d2SYehuda Sadeh 29993d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 30003d14c5d2SYehuda Sadeh { 30013d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 30023d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 30033d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 30043d14c5d2SYehuda Sadeh 300527859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 30063d14c5d2SYehuda Sadeh } 30073d14c5d2SYehuda Sadeh 30083d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 30093d14c5d2SYehuda Sadeh { 30103d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 30113d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 30123d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 30133d14c5d2SYehuda Sadeh 301427859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 30153d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 30163d14c5d2SYehuda Sadeh } 30173d14c5d2SYehuda Sadeh 301879dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 301933d07337SYan, Zheng { 302079dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 302133d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 302279dbd1baSIlya Dryomov 302333d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 302433d07337SYan, Zheng } 302533d07337SYan, Zheng 302679dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 302733d07337SYan, Zheng { 302879dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 302933d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 303079dbd1baSIlya Dryomov 303133d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 303233d07337SYan, Zheng } 303333d07337SYan, Zheng 30343d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 30353d14c5d2SYehuda Sadeh .get = get_osd_con, 30363d14c5d2SYehuda Sadeh .put = put_osd_con, 30373d14c5d2SYehuda Sadeh .dispatch = dispatch, 30383d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 30393d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 30403d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 30413d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 304279dbd1baSIlya Dryomov .sign_message = osd_sign_message, 304379dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 30443d14c5d2SYehuda Sadeh .fault = osd_reset, 30453d14c5d2SYehuda Sadeh }; 3046