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 */ 878fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(request, struct ceph_osd_request, r_tid, r_node) 8793d14c5d2SYehuda Sadeh 8803d14c5d2SYehuda Sadeh static struct ceph_osd_request * 8813d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 8823d14c5d2SYehuda Sadeh u64 tid) 8833d14c5d2SYehuda Sadeh { 8843d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 8853d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 8863d14c5d2SYehuda Sadeh 8873d14c5d2SYehuda Sadeh while (n) { 8883d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 8893d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 8903d14c5d2SYehuda Sadeh if (!n->rb_left) 8913d14c5d2SYehuda Sadeh return req; 8923d14c5d2SYehuda Sadeh n = n->rb_left; 8933d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 8943d14c5d2SYehuda Sadeh n = n->rb_right; 8953d14c5d2SYehuda Sadeh } else { 8963d14c5d2SYehuda Sadeh return req; 8973d14c5d2SYehuda Sadeh } 8983d14c5d2SYehuda Sadeh } 8993d14c5d2SYehuda Sadeh return NULL; 9003d14c5d2SYehuda Sadeh } 9013d14c5d2SYehuda Sadeh 9022cc6128aSIlya Dryomov static void __kick_linger_request(struct ceph_osd_request *req) 9032cc6128aSIlya Dryomov { 9042cc6128aSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 9052cc6128aSIlya Dryomov struct ceph_osd *osd = req->r_osd; 9062cc6128aSIlya Dryomov 9072cc6128aSIlya Dryomov /* 9082cc6128aSIlya Dryomov * Linger requests need to be resent with a new tid to avoid 9092cc6128aSIlya Dryomov * the dup op detection logic on the OSDs. Achieve this with 9102cc6128aSIlya Dryomov * a re-register dance instead of open-coding. 9112cc6128aSIlya Dryomov */ 9122cc6128aSIlya Dryomov ceph_osdc_get_request(req); 9132cc6128aSIlya Dryomov if (!list_empty(&req->r_linger_item)) 9142cc6128aSIlya Dryomov __unregister_linger_request(osdc, req); 9152cc6128aSIlya Dryomov else 9162cc6128aSIlya Dryomov __unregister_request(osdc, req); 9172cc6128aSIlya Dryomov __register_request(osdc, req); 9182cc6128aSIlya Dryomov ceph_osdc_put_request(req); 9192cc6128aSIlya Dryomov 9202cc6128aSIlya Dryomov /* 9212cc6128aSIlya Dryomov * Unless request has been registered as both normal and 9222cc6128aSIlya Dryomov * lingering, __unregister{,_linger}_request clears r_osd. 9232cc6128aSIlya Dryomov * However, here we need to preserve r_osd to make sure we 9242cc6128aSIlya Dryomov * requeue on the same OSD. 9252cc6128aSIlya Dryomov */ 9262cc6128aSIlya Dryomov WARN_ON(req->r_osd || !osd); 9272cc6128aSIlya Dryomov req->r_osd = osd; 9282cc6128aSIlya Dryomov 9292cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, req->r_tid); 9302cc6128aSIlya Dryomov __enqueue_request(req); 9312cc6128aSIlya Dryomov } 9322cc6128aSIlya Dryomov 9336f6c7006SSage Weil /* 9346f6c7006SSage Weil * Resubmit requests pending on the given osd. 9356f6c7006SSage Weil */ 9366f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 9376f6c7006SSage Weil struct ceph_osd *osd) 9386f6c7006SSage Weil { 939a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 940e02493c0SAlex Elder LIST_HEAD(resend); 9412cc6128aSIlya Dryomov LIST_HEAD(resend_linger); 9426f6c7006SSage Weil int err; 9436f6c7006SSage Weil 9442cc6128aSIlya Dryomov dout("%s osd%d\n", __func__, osd->o_osd); 9456f6c7006SSage Weil err = __reset_osd(osdc, osd); 946685a7555SAlex Elder if (err) 9476f6c7006SSage Weil return; 9482cc6128aSIlya Dryomov 949e02493c0SAlex Elder /* 950e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 951e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 952e02493c0SAlex Elder * sent in tid order, and that is also the order they're 953e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 954e02493c0SAlex Elder * flight will be found first, followed by all requests that 955e02493c0SAlex Elder * have not yet been sent. And to resend requests while 956e02493c0SAlex Elder * preserving this order we will want to put any sent 957e02493c0SAlex Elder * requests back on the front of the osd client's unsent 958e02493c0SAlex Elder * list. 959e02493c0SAlex Elder * 960e02493c0SAlex Elder * So we build a separate ordered list of already-sent 961e02493c0SAlex Elder * requests for the affected osd and splice it onto the 962e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 963e02493c0SAlex Elder * request that has not yet been sent we're done. Those 964e02493c0SAlex Elder * requests are already sitting right where they belong. 965e02493c0SAlex Elder */ 9666f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 967e02493c0SAlex Elder if (!req->r_sent) 968e02493c0SAlex Elder break; 9692cc6128aSIlya Dryomov 9702cc6128aSIlya Dryomov if (!req->r_linger) { 9712cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, 9722cc6128aSIlya Dryomov req->r_tid); 973e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 9746f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 9752cc6128aSIlya Dryomov } else { 9762cc6128aSIlya Dryomov list_move_tail(&req->r_req_lru_item, &resend_linger); 9772cc6128aSIlya Dryomov } 9786f6c7006SSage Weil } 979e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 980a40c4f10SYehuda Sadeh 981e02493c0SAlex Elder /* 9822cc6128aSIlya Dryomov * Both registered and not yet registered linger requests are 9832cc6128aSIlya Dryomov * enqueued with a new tid on the same OSD. We add/move them 9842cc6128aSIlya Dryomov * to req_unsent/o_requests at the end to keep things in tid 9852cc6128aSIlya Dryomov * order. 986e02493c0SAlex Elder */ 987a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 9881d0326b1SIlya Dryomov r_linger_osd_item) { 9892cc6128aSIlya Dryomov WARN_ON(!list_empty(&req->r_req_lru_item)); 9902cc6128aSIlya Dryomov __kick_linger_request(req); 991a40c4f10SYehuda Sadeh } 9922cc6128aSIlya Dryomov 9932cc6128aSIlya Dryomov list_for_each_entry_safe(req, nreq, &resend_linger, r_req_lru_item) 9942cc6128aSIlya Dryomov __kick_linger_request(req); 9956f6c7006SSage Weil } 9966f6c7006SSage Weil 9973d14c5d2SYehuda Sadeh /* 9983d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 9993d14c5d2SYehuda Sadeh */ 10003d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 10013d14c5d2SYehuda Sadeh { 10023d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 10033d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 10043d14c5d2SYehuda Sadeh 10053d14c5d2SYehuda Sadeh if (!osd) 10063d14c5d2SYehuda Sadeh return; 10073d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 10083d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 10093d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 101083aff95eSSage Weil mutex_lock(&osdc->request_mutex); 101183aff95eSSage Weil __kick_osd_requests(osdc, osd); 1012f9d25199SAlex Elder __send_queued(osdc); 101383aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 10143d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 10153d14c5d2SYehuda Sadeh } 10163d14c5d2SYehuda Sadeh 10173d14c5d2SYehuda Sadeh /* 10183d14c5d2SYehuda Sadeh * Track open sessions with osds. 10193d14c5d2SYehuda Sadeh */ 1020e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 10213d14c5d2SYehuda Sadeh { 10223d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10233d14c5d2SYehuda Sadeh 10243d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 10253d14c5d2SYehuda Sadeh if (!osd) 10263d14c5d2SYehuda Sadeh return NULL; 10273d14c5d2SYehuda Sadeh 10283d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 10293d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1030e10006f8SAlex Elder osd->o_osd = onum; 1031f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 10323d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 1033a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 10343d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 10353d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 10363d14c5d2SYehuda Sadeh 1037b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 10383d14c5d2SYehuda Sadeh 10393d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 10403d14c5d2SYehuda Sadeh return osd; 10413d14c5d2SYehuda Sadeh } 10423d14c5d2SYehuda Sadeh 10433d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 10443d14c5d2SYehuda Sadeh { 10453d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 10463d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 10473d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 10483d14c5d2SYehuda Sadeh return osd; 10493d14c5d2SYehuda Sadeh } else { 10503d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 10513d14c5d2SYehuda Sadeh return NULL; 10523d14c5d2SYehuda Sadeh } 10533d14c5d2SYehuda Sadeh } 10543d14c5d2SYehuda Sadeh 10553d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 10563d14c5d2SYehuda Sadeh { 10573d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 10583d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 1059b28ec2f3SIlya Dryomov if (atomic_dec_and_test(&osd->o_ref)) { 1060b28ec2f3SIlya Dryomov if (osd->o_auth.authorizer) 10616c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 10623d14c5d2SYehuda Sadeh kfree(osd); 10633d14c5d2SYehuda Sadeh } 10643d14c5d2SYehuda Sadeh } 10653d14c5d2SYehuda Sadeh 1066fcd00b68SIlya Dryomov DEFINE_RB_FUNCS(osd, struct ceph_osd, o_osd, o_node) 1067fcd00b68SIlya Dryomov 10683d14c5d2SYehuda Sadeh /* 10693d14c5d2SYehuda Sadeh * remove an osd from our map 10703d14c5d2SYehuda Sadeh */ 10713d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 10723d14c5d2SYehuda Sadeh { 10737eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 1074cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_requests)); 1075cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_linger_requests)); 10767c6e6fc5SIlya Dryomov 10773d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 1078fcd00b68SIlya Dryomov erase_osd(&osdc->osds, osd); 10797eb71e03SIlya Dryomov } 10807eb71e03SIlya Dryomov 10817eb71e03SIlya Dryomov static void remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 10827eb71e03SIlya Dryomov { 10837eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 10847eb71e03SIlya Dryomov 10857eb71e03SIlya Dryomov if (!RB_EMPTY_NODE(&osd->o_node)) { 10863d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 10877eb71e03SIlya Dryomov __remove_osd(osdc, osd); 10883d14c5d2SYehuda Sadeh put_osd(osd); 10893d14c5d2SYehuda Sadeh } 10907eb71e03SIlya Dryomov } 10913d14c5d2SYehuda Sadeh 10923d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 10933d14c5d2SYehuda Sadeh struct ceph_osd *osd) 10943d14c5d2SYehuda Sadeh { 1095bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 10963d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1097bbf37ec3SIlya Dryomov 10983d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 1099a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 11003d14c5d2SYehuda Sadeh } 11013d14c5d2SYehuda Sadeh 1102bbf37ec3SIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd_client *osdc, 1103bbf37ec3SIlya Dryomov struct ceph_osd *osd) 1104bbf37ec3SIlya Dryomov { 1105bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 1106bbf37ec3SIlya Dryomov 1107bbf37ec3SIlya Dryomov if (list_empty(&osd->o_requests) && 1108bbf37ec3SIlya Dryomov list_empty(&osd->o_linger_requests)) 1109bbf37ec3SIlya Dryomov __move_osd_to_lru(osdc, osd); 1110bbf37ec3SIlya Dryomov } 1111bbf37ec3SIlya Dryomov 11123d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 11133d14c5d2SYehuda Sadeh { 11143d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 11153d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 11163d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 11173d14c5d2SYehuda Sadeh } 11183d14c5d2SYehuda Sadeh 11193d14c5d2SYehuda Sadeh /* 11203d14c5d2SYehuda Sadeh * reset osd connect 11213d14c5d2SYehuda Sadeh */ 11223d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 11233d14c5d2SYehuda Sadeh { 1124c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 11253d14c5d2SYehuda Sadeh 11263d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 1127a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 1128a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 11297eb71e03SIlya Dryomov remove_osd(osdc, osd); 1130c3acb181SAlex Elder return -ENODEV; 1131c3acb181SAlex Elder } 1132c3acb181SAlex Elder 1133c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 1134c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 11353d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 1136c3acb181SAlex Elder struct ceph_osd_request *req; 1137c3acb181SAlex Elder 11383d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 11390b4af2e8SIlya Dryomov "letting msgr retry\n"); 11403d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 11413d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 11423d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1143c3acb181SAlex Elder 1144c3acb181SAlex Elder return -EAGAIN; 11453d14c5d2SYehuda Sadeh } 1146c3acb181SAlex Elder 1147c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1148c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1149c3acb181SAlex Elder osd->o_incarnation++; 1150c3acb181SAlex Elder 1151c3acb181SAlex Elder return 0; 11523d14c5d2SYehuda Sadeh } 11533d14c5d2SYehuda Sadeh 11543d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 11553d14c5d2SYehuda Sadeh { 11563d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 1157a319bf56SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 11583d14c5d2SYehuda Sadeh } 11593d14c5d2SYehuda Sadeh 11603d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 11613d14c5d2SYehuda Sadeh { 11623d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 11633d14c5d2SYehuda Sadeh } 11643d14c5d2SYehuda Sadeh 11653d14c5d2SYehuda Sadeh /* 11663d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 11673d14c5d2SYehuda Sadeh * the timeout event. 11683d14c5d2SYehuda Sadeh */ 1169a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 11703d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 11713d14c5d2SYehuda Sadeh { 11723d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 11733d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 117477f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 1175fcd00b68SIlya Dryomov insert_request(&osdc->requests, req); 11763d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 11773d14c5d2SYehuda Sadeh osdc->num_requests++; 11783d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 11793d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 11803d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 11813d14c5d2SYehuda Sadeh } 1182a40c4f10SYehuda Sadeh } 1183a40c4f10SYehuda Sadeh 11843d14c5d2SYehuda Sadeh /* 11853d14c5d2SYehuda Sadeh * called under osdc->request_mutex 11863d14c5d2SYehuda Sadeh */ 11873d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 11883d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 11893d14c5d2SYehuda Sadeh { 119035f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 119135f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 119235f9f8a0SSage Weil req, req->r_tid); 119335f9f8a0SSage Weil return; 119435f9f8a0SSage Weil } 119535f9f8a0SSage Weil 11963d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 1197fcd00b68SIlya Dryomov erase_request(&osdc->requests, req); 11983d14c5d2SYehuda Sadeh osdc->num_requests--; 11993d14c5d2SYehuda Sadeh 12003d14c5d2SYehuda Sadeh if (req->r_osd) { 12013d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 12026740a845SAlex Elder ceph_msg_revoke(req->r_request); 12033d14c5d2SYehuda Sadeh 12043d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1205bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 12064f23409eSIlya Dryomov if (list_empty(&req->r_linger_osd_item)) 12073d14c5d2SYehuda Sadeh req->r_osd = NULL; 12083d14c5d2SYehuda Sadeh } 12093d14c5d2SYehuda Sadeh 12107d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 12113d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 12123d14c5d2SYehuda Sadeh 12133d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 12143d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 12153d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 12163d14c5d2SYehuda Sadeh } 12173d14c5d2SYehuda Sadeh } 12183d14c5d2SYehuda Sadeh 12193d14c5d2SYehuda Sadeh /* 12203d14c5d2SYehuda Sadeh * Cancel a previously queued request message 12213d14c5d2SYehuda Sadeh */ 12223d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 12233d14c5d2SYehuda Sadeh { 12243d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 12256740a845SAlex Elder ceph_msg_revoke(req->r_request); 12263d14c5d2SYehuda Sadeh req->r_sent = 0; 12273d14c5d2SYehuda Sadeh } 12283d14c5d2SYehuda Sadeh } 12293d14c5d2SYehuda Sadeh 1230a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1231a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1232a40c4f10SYehuda Sadeh { 1233af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1234af593064SIlya Dryomov WARN_ON(!req->r_linger); 1235af593064SIlya Dryomov 123696e4dac6SAlex Elder ceph_osdc_get_request(req); 1237a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 12386194ea89SSage Weil if (req->r_osd) 12391d0326b1SIlya Dryomov list_add_tail(&req->r_linger_osd_item, 12406194ea89SSage Weil &req->r_osd->o_linger_requests); 1241a40c4f10SYehuda Sadeh } 1242a40c4f10SYehuda Sadeh 1243a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1244a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1245a40c4f10SYehuda Sadeh { 1246af593064SIlya Dryomov WARN_ON(!req->r_linger); 1247af593064SIlya Dryomov 1248af593064SIlya Dryomov if (list_empty(&req->r_linger_item)) { 1249af593064SIlya Dryomov dout("%s %p tid %llu not registered\n", __func__, req, 1250af593064SIlya Dryomov req->r_tid); 1251af593064SIlya Dryomov return; 1252af593064SIlya Dryomov } 1253af593064SIlya Dryomov 1254af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1255a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 1256af593064SIlya Dryomov 125761c74035SAlex Elder if (req->r_osd) { 12581d0326b1SIlya Dryomov list_del_init(&req->r_linger_osd_item); 1259bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 1260fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1261a40c4f10SYehuda Sadeh req->r_osd = NULL; 1262a40c4f10SYehuda Sadeh } 126396e4dac6SAlex Elder ceph_osdc_put_request(req); 1264a40c4f10SYehuda Sadeh } 1265a40c4f10SYehuda Sadeh 1266a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1267a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1268a40c4f10SYehuda Sadeh { 1269a40c4f10SYehuda Sadeh if (!req->r_linger) { 1270a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1271a40c4f10SYehuda Sadeh req->r_linger = 1; 1272a40c4f10SYehuda Sadeh } 1273a40c4f10SYehuda Sadeh } 1274a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1275a40c4f10SYehuda Sadeh 12763d14c5d2SYehuda Sadeh /* 1277d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1278d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1279d29adb34SJosh Durgin * 1280d29adb34SJosh Durgin * Caller should hold map_sem for read. 1281d29adb34SJosh Durgin */ 1282d29adb34SJosh Durgin static bool __req_should_be_paused(struct ceph_osd_client *osdc, 1283d29adb34SJosh Durgin struct ceph_osd_request *req) 1284d29adb34SJosh Durgin { 1285d29adb34SJosh Durgin bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 1286d29adb34SJosh Durgin bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 1287d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 1288d29adb34SJosh Durgin return (req->r_flags & CEPH_OSD_FLAG_READ && pauserd) || 1289d29adb34SJosh Durgin (req->r_flags & CEPH_OSD_FLAG_WRITE && pausewr); 1290d29adb34SJosh Durgin } 1291d29adb34SJosh Durgin 1292d29adb34SJosh Durgin /* 129317a13e40SIlya Dryomov * Calculate mapping of a request to a PG. Takes tiering into account. 129417a13e40SIlya Dryomov */ 129517a13e40SIlya Dryomov static int __calc_request_pg(struct ceph_osdmap *osdmap, 129617a13e40SIlya Dryomov struct ceph_osd_request *req, 129717a13e40SIlya Dryomov struct ceph_pg *pg_out) 129817a13e40SIlya Dryomov { 1299205ee118SIlya Dryomov bool need_check_tiering; 1300205ee118SIlya Dryomov 1301205ee118SIlya Dryomov need_check_tiering = false; 1302205ee118SIlya Dryomov if (req->r_target_oloc.pool == -1) { 1303205ee118SIlya Dryomov req->r_target_oloc = req->r_base_oloc; /* struct */ 1304205ee118SIlya Dryomov need_check_tiering = true; 1305205ee118SIlya Dryomov } 1306d30291b9SIlya Dryomov if (ceph_oid_empty(&req->r_target_oid)) { 1307205ee118SIlya Dryomov ceph_oid_copy(&req->r_target_oid, &req->r_base_oid); 1308205ee118SIlya Dryomov need_check_tiering = true; 1309205ee118SIlya Dryomov } 1310205ee118SIlya Dryomov 1311205ee118SIlya Dryomov if (need_check_tiering && 1312205ee118SIlya Dryomov (req->r_flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 131317a13e40SIlya Dryomov struct ceph_pg_pool_info *pi; 131417a13e40SIlya Dryomov 1315205ee118SIlya Dryomov pi = ceph_pg_pool_by_id(osdmap, req->r_target_oloc.pool); 131617a13e40SIlya Dryomov if (pi) { 131717a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_READ) && 131817a13e40SIlya Dryomov pi->read_tier >= 0) 1319205ee118SIlya Dryomov req->r_target_oloc.pool = pi->read_tier; 132017a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 132117a13e40SIlya Dryomov pi->write_tier >= 0) 1322205ee118SIlya Dryomov req->r_target_oloc.pool = pi->write_tier; 132317a13e40SIlya Dryomov } 132417a13e40SIlya Dryomov /* !pi is caught in ceph_oloc_oid_to_pg() */ 132517a13e40SIlya Dryomov } 132617a13e40SIlya Dryomov 1327205ee118SIlya Dryomov return ceph_oloc_oid_to_pg(osdmap, &req->r_target_oloc, 1328205ee118SIlya Dryomov &req->r_target_oid, pg_out); 132917a13e40SIlya Dryomov } 133017a13e40SIlya Dryomov 1331f671b581SIlya Dryomov static void __enqueue_request(struct ceph_osd_request *req) 1332f671b581SIlya Dryomov { 1333f671b581SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 1334f671b581SIlya Dryomov 1335f671b581SIlya Dryomov dout("%s %p tid %llu to osd%d\n", __func__, req, req->r_tid, 1336f671b581SIlya Dryomov req->r_osd ? req->r_osd->o_osd : -1); 1337f671b581SIlya Dryomov 1338f671b581SIlya Dryomov if (req->r_osd) { 1339f671b581SIlya Dryomov __remove_osd_from_lru(req->r_osd); 1340f671b581SIlya Dryomov list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1341f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 1342f671b581SIlya Dryomov } else { 1343f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 1344f671b581SIlya Dryomov } 1345f671b581SIlya Dryomov } 1346f671b581SIlya Dryomov 134717a13e40SIlya Dryomov /* 13483d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 13493d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 135025985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 13516f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 13523d14c5d2SYehuda Sadeh * 13533d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 13543d14c5d2SYehuda Sadeh * 13553d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 13563d14c5d2SYehuda Sadeh */ 13576f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 135838d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 13593d14c5d2SYehuda Sadeh { 13605b191d99SSage Weil struct ceph_pg pgid; 13613d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 13628008ab10SIlya Dryomov int num, o; 13633d14c5d2SYehuda Sadeh int err; 1364d29adb34SJosh Durgin bool was_paused; 13653d14c5d2SYehuda Sadeh 13666f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 136717a13e40SIlya Dryomov 136817a13e40SIlya Dryomov err = __calc_request_pg(osdc->osdmap, req, &pgid); 13696f6c7006SSage Weil if (err) { 13706f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 13713d14c5d2SYehuda Sadeh return err; 13726f6c7006SSage Weil } 13733d14c5d2SYehuda Sadeh req->r_pgid = pgid; 13743d14c5d2SYehuda Sadeh 13758008ab10SIlya Dryomov num = ceph_calc_pg_acting(osdc->osdmap, pgid, acting, &o); 13768008ab10SIlya Dryomov if (num < 0) 13778008ab10SIlya Dryomov num = 0; 13783d14c5d2SYehuda Sadeh 1379d29adb34SJosh Durgin was_paused = req->r_paused; 1380d29adb34SJosh Durgin req->r_paused = __req_should_be_paused(osdc, req); 1381d29adb34SJosh Durgin if (was_paused && !req->r_paused) 1382d29adb34SJosh Durgin force_resend = 1; 1383d29adb34SJosh Durgin 138438d6453cSSage Weil if ((!force_resend && 138538d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 13863d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 13873d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 13883d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 1389d29adb34SJosh Durgin (req->r_osd == NULL && o == -1) || 1390d29adb34SJosh Durgin req->r_paused) 13913d14c5d2SYehuda Sadeh return 0; /* no change */ 13923d14c5d2SYehuda Sadeh 13935b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 13945b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 13953d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 13963d14c5d2SYehuda Sadeh 13973d14c5d2SYehuda Sadeh /* record full pg acting set */ 13983d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 13993d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 14003d14c5d2SYehuda Sadeh 14013d14c5d2SYehuda Sadeh if (req->r_osd) { 14023d14c5d2SYehuda Sadeh __cancel_request(req); 14033d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1404a390de02SIlya Dryomov list_del_init(&req->r_linger_osd_item); 14053d14c5d2SYehuda Sadeh req->r_osd = NULL; 14063d14c5d2SYehuda Sadeh } 14073d14c5d2SYehuda Sadeh 1408fcd00b68SIlya Dryomov req->r_osd = lookup_osd(&osdc->osds, o); 14093d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 14103d14c5d2SYehuda Sadeh err = -ENOMEM; 1411e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 14126f6c7006SSage Weil if (!req->r_osd) { 14136f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 14143d14c5d2SYehuda Sadeh goto out; 14156f6c7006SSage Weil } 14163d14c5d2SYehuda Sadeh 14176f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 1418fcd00b68SIlya Dryomov insert_osd(&osdc->osds, req->r_osd); 14193d14c5d2SYehuda Sadeh 1420b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1421b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1422b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 14233d14c5d2SYehuda Sadeh } 14243d14c5d2SYehuda Sadeh 1425f671b581SIlya Dryomov __enqueue_request(req); 14263d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 14273d14c5d2SYehuda Sadeh 14283d14c5d2SYehuda Sadeh out: 14293d14c5d2SYehuda Sadeh return err; 14303d14c5d2SYehuda Sadeh } 14313d14c5d2SYehuda Sadeh 14323d14c5d2SYehuda Sadeh /* 14333d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 14343d14c5d2SYehuda Sadeh */ 143556e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 14363d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 14373d14c5d2SYehuda Sadeh { 14381b83bef2SSage Weil void *p; 14393d14c5d2SYehuda Sadeh 14401b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 14411b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 14421b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 14433d14c5d2SYehuda Sadeh 14441b83bef2SSage Weil /* fill in message content that changes each time we send it */ 14451b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 14461b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 1447205ee118SIlya Dryomov put_unaligned_le64(req->r_target_oloc.pool, req->r_request_pool); 14481b83bef2SSage Weil p = req->r_request_pgid; 14491b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 14501b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 14511b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 14521b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 14531b83bef2SSage Weil sizeof(req->r_reassert_version)); 14542169aea6SSage Weil 14553d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 14563d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 14573d14c5d2SYehuda Sadeh 14583d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 145926be8808SAlex Elder 14603d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 146126be8808SAlex Elder 146226be8808SAlex Elder ceph_con_send(&req->r_osd->o_con, req->r_request); 14633d14c5d2SYehuda Sadeh } 14643d14c5d2SYehuda Sadeh 14653d14c5d2SYehuda Sadeh /* 14666f6c7006SSage Weil * Send any requests in the queue (req_unsent). 14676f6c7006SSage Weil */ 1468f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 14696f6c7006SSage Weil { 14706f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 14716f6c7006SSage Weil 1472f9d25199SAlex Elder dout("__send_queued\n"); 1473f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 14746f6c7006SSage Weil __send_request(osdc, req); 14756f6c7006SSage Weil } 14766f6c7006SSage Weil 14776f6c7006SSage Weil /* 14780bbfdfe8SIlya Dryomov * Caller should hold map_sem for read and request_mutex. 14790bbfdfe8SIlya Dryomov */ 14800bbfdfe8SIlya Dryomov static int __ceph_osdc_start_request(struct ceph_osd_client *osdc, 14810bbfdfe8SIlya Dryomov struct ceph_osd_request *req, 14820bbfdfe8SIlya Dryomov bool nofail) 14830bbfdfe8SIlya Dryomov { 14840bbfdfe8SIlya Dryomov int rc; 14850bbfdfe8SIlya Dryomov 14860bbfdfe8SIlya Dryomov __register_request(osdc, req); 14870bbfdfe8SIlya Dryomov req->r_sent = 0; 14880bbfdfe8SIlya Dryomov req->r_got_reply = 0; 14890bbfdfe8SIlya Dryomov rc = __map_request(osdc, req, 0); 14900bbfdfe8SIlya Dryomov if (rc < 0) { 14910bbfdfe8SIlya Dryomov if (nofail) { 14920bbfdfe8SIlya Dryomov dout("osdc_start_request failed map, " 14930bbfdfe8SIlya Dryomov " will retry %lld\n", req->r_tid); 14940bbfdfe8SIlya Dryomov rc = 0; 14950bbfdfe8SIlya Dryomov } else { 14960bbfdfe8SIlya Dryomov __unregister_request(osdc, req); 14970bbfdfe8SIlya Dryomov } 14980bbfdfe8SIlya Dryomov return rc; 14990bbfdfe8SIlya Dryomov } 15000bbfdfe8SIlya Dryomov 15010bbfdfe8SIlya Dryomov if (req->r_osd == NULL) { 15020bbfdfe8SIlya Dryomov dout("send_request %p no up osds in pg\n", req); 15030bbfdfe8SIlya Dryomov ceph_monc_request_next_osdmap(&osdc->client->monc); 15040bbfdfe8SIlya Dryomov } else { 15050bbfdfe8SIlya Dryomov __send_queued(osdc); 15060bbfdfe8SIlya Dryomov } 15070bbfdfe8SIlya Dryomov 15080bbfdfe8SIlya Dryomov return 0; 15090bbfdfe8SIlya Dryomov } 15100bbfdfe8SIlya Dryomov 15110bbfdfe8SIlya Dryomov /* 15123d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 15133d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 15143d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 15153d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 15163d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 15173d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 15183d14c5d2SYehuda Sadeh * there are no open requests). 15193d14c5d2SYehuda Sadeh */ 15203d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 15213d14c5d2SYehuda Sadeh { 15223d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 15233d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 1524a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 152583aff95eSSage Weil struct ceph_osd_request *req; 15263d14c5d2SYehuda Sadeh struct ceph_osd *osd; 15273d14c5d2SYehuda Sadeh struct list_head slow_osds; 15283d14c5d2SYehuda Sadeh dout("timeout\n"); 15293d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 15303d14c5d2SYehuda Sadeh 15313d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 15323d14c5d2SYehuda Sadeh 15333d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 15343d14c5d2SYehuda Sadeh 15353d14c5d2SYehuda Sadeh /* 15363d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 15373d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 15383d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 15393d14c5d2SYehuda Sadeh */ 15403d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 15413d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 1542a319bf56SIlya Dryomov if (time_before(jiffies, 1543a319bf56SIlya Dryomov req->r_stamp + opts->osd_keepalive_timeout)) 15443d14c5d2SYehuda Sadeh break; 15453d14c5d2SYehuda Sadeh 15463d14c5d2SYehuda Sadeh osd = req->r_osd; 15473d14c5d2SYehuda Sadeh BUG_ON(!osd); 15483d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 15493d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 15503d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 15513d14c5d2SYehuda Sadeh } 15523d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 15533d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 15543d14c5d2SYehuda Sadeh o_keepalive_item); 15553d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 15563d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 15573d14c5d2SYehuda Sadeh } 15583d14c5d2SYehuda Sadeh 15593d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1560f9d25199SAlex Elder __send_queued(osdc); 15613d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 15623d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 15633d14c5d2SYehuda Sadeh } 15643d14c5d2SYehuda Sadeh 15653d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 15663d14c5d2SYehuda Sadeh { 15673d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 15683d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 15693d14c5d2SYehuda Sadeh osds_timeout_work.work); 1570a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 157142a2c09fSIlya Dryomov struct ceph_osd *osd, *nosd; 15723d14c5d2SYehuda Sadeh 157342a2c09fSIlya Dryomov dout("%s osdc %p\n", __func__, osdc); 15743d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 157542a2c09fSIlya Dryomov mutex_lock(&osdc->request_mutex); 15763d14c5d2SYehuda Sadeh 157742a2c09fSIlya Dryomov list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 157842a2c09fSIlya Dryomov if (time_before(jiffies, osd->lru_ttl)) 157942a2c09fSIlya Dryomov break; 158042a2c09fSIlya Dryomov 158142a2c09fSIlya Dryomov remove_osd(osdc, osd); 158242a2c09fSIlya Dryomov } 158342a2c09fSIlya Dryomov 158442a2c09fSIlya Dryomov mutex_unlock(&osdc->request_mutex); 158542a2c09fSIlya Dryomov up_read(&osdc->map_sem); 15863d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 15873d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 15883d14c5d2SYehuda Sadeh } 15893d14c5d2SYehuda Sadeh 1590205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 1591205ee118SIlya Dryomov struct ceph_object_locator *oloc) 1592205ee118SIlya Dryomov { 1593205ee118SIlya Dryomov u8 struct_v, struct_cv; 1594205ee118SIlya Dryomov u32 len; 1595205ee118SIlya Dryomov void *struct_end; 1596205ee118SIlya Dryomov int ret = 0; 1597205ee118SIlya Dryomov 1598205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1599205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1600205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1601205ee118SIlya Dryomov if (struct_v < 3) { 1602205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 1603205ee118SIlya Dryomov struct_v, struct_cv); 1604205ee118SIlya Dryomov goto e_inval; 1605205ee118SIlya Dryomov } 1606205ee118SIlya Dryomov if (struct_cv > 6) { 1607205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 1608205ee118SIlya Dryomov struct_v, struct_cv); 1609205ee118SIlya Dryomov goto e_inval; 1610205ee118SIlya Dryomov } 1611205ee118SIlya Dryomov len = ceph_decode_32(p); 1612205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1613205ee118SIlya Dryomov struct_end = *p + len; 1614205ee118SIlya Dryomov 1615205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 1616205ee118SIlya Dryomov *p += 4; /* skip preferred */ 1617205ee118SIlya Dryomov 1618205ee118SIlya Dryomov len = ceph_decode_32(p); 1619205ee118SIlya Dryomov if (len > 0) { 1620205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 1621205ee118SIlya Dryomov goto e_inval; 1622205ee118SIlya Dryomov } 1623205ee118SIlya Dryomov 1624205ee118SIlya Dryomov if (struct_v >= 5) { 1625205ee118SIlya Dryomov len = ceph_decode_32(p); 1626205ee118SIlya Dryomov if (len > 0) { 1627205ee118SIlya Dryomov pr_warn("ceph_object_locator::nspace is set\n"); 1628205ee118SIlya Dryomov goto e_inval; 1629205ee118SIlya Dryomov } 1630205ee118SIlya Dryomov } 1631205ee118SIlya Dryomov 1632205ee118SIlya Dryomov if (struct_v >= 6) { 1633205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 1634205ee118SIlya Dryomov if (hash != -1) { 1635205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 1636205ee118SIlya Dryomov goto e_inval; 1637205ee118SIlya Dryomov } 1638205ee118SIlya Dryomov } 1639205ee118SIlya Dryomov 1640205ee118SIlya Dryomov /* skip the rest */ 1641205ee118SIlya Dryomov *p = struct_end; 1642205ee118SIlya Dryomov out: 1643205ee118SIlya Dryomov return ret; 1644205ee118SIlya Dryomov 1645205ee118SIlya Dryomov e_inval: 1646205ee118SIlya Dryomov ret = -EINVAL; 1647205ee118SIlya Dryomov goto out; 1648205ee118SIlya Dryomov } 1649205ee118SIlya Dryomov 1650205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 1651205ee118SIlya Dryomov struct ceph_request_redirect *redir) 1652205ee118SIlya Dryomov { 1653205ee118SIlya Dryomov u8 struct_v, struct_cv; 1654205ee118SIlya Dryomov u32 len; 1655205ee118SIlya Dryomov void *struct_end; 1656205ee118SIlya Dryomov int ret; 1657205ee118SIlya Dryomov 1658205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1659205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1660205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1661205ee118SIlya Dryomov if (struct_cv > 1) { 1662205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 1663205ee118SIlya Dryomov struct_v, struct_cv); 1664205ee118SIlya Dryomov goto e_inval; 1665205ee118SIlya Dryomov } 1666205ee118SIlya Dryomov len = ceph_decode_32(p); 1667205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1668205ee118SIlya Dryomov struct_end = *p + len; 1669205ee118SIlya Dryomov 1670205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 1671205ee118SIlya Dryomov if (ret) 1672205ee118SIlya Dryomov goto out; 1673205ee118SIlya Dryomov 1674205ee118SIlya Dryomov len = ceph_decode_32(p); 1675205ee118SIlya Dryomov if (len > 0) { 1676205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 1677205ee118SIlya Dryomov goto e_inval; 1678205ee118SIlya Dryomov } 1679205ee118SIlya Dryomov 1680205ee118SIlya Dryomov len = ceph_decode_32(p); 1681205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 1682205ee118SIlya Dryomov 1683205ee118SIlya Dryomov /* skip the rest */ 1684205ee118SIlya Dryomov *p = struct_end; 1685205ee118SIlya Dryomov out: 1686205ee118SIlya Dryomov return ret; 1687205ee118SIlya Dryomov 1688205ee118SIlya Dryomov e_inval: 1689205ee118SIlya Dryomov ret = -EINVAL; 1690205ee118SIlya Dryomov goto out; 1691205ee118SIlya Dryomov } 1692205ee118SIlya Dryomov 169325845472SSage Weil static void complete_request(struct ceph_osd_request *req) 169425845472SSage Weil { 169525845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 169625845472SSage Weil } 169725845472SSage Weil 16983d14c5d2SYehuda Sadeh /* 16993d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 17003d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 17013d14c5d2SYehuda Sadeh */ 170270cf052dSShraddha Barke static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg) 17033d14c5d2SYehuda Sadeh { 17041b83bef2SSage Weil void *p, *end; 17053d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1706205ee118SIlya Dryomov struct ceph_request_redirect redir; 17073d14c5d2SYehuda Sadeh u64 tid; 17081b83bef2SSage Weil int object_len; 170979528734SAlex Elder unsigned int numops; 171079528734SAlex Elder int payload_len, flags; 17113d14c5d2SYehuda Sadeh s32 result; 17121b83bef2SSage Weil s32 retry_attempt; 17131b83bef2SSage Weil struct ceph_pg pg; 17141b83bef2SSage Weil int err; 17151b83bef2SSage Weil u32 reassert_epoch; 17161b83bef2SSage Weil u64 reassert_version; 17171b83bef2SSage Weil u32 osdmap_epoch; 17180d5af164SAlex Elder int already_completed; 17199fc6e064SAlex Elder u32 bytes; 1720b0b31a8fSIlya Dryomov u8 decode_redir; 172179528734SAlex Elder unsigned int i; 17223d14c5d2SYehuda Sadeh 17233d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 17241b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 17251b83bef2SSage Weil 17261b83bef2SSage Weil p = msg->front.iov_base; 17271b83bef2SSage Weil end = p + msg->front.iov_len; 17281b83bef2SSage Weil 17291b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 17301b83bef2SSage Weil object_len = ceph_decode_32(&p); 17311b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 17321b83bef2SSage Weil p += object_len; 17331b83bef2SSage Weil 1734ef4859d6SAlex Elder err = ceph_decode_pgid(&p, end, &pg); 17351b83bef2SSage Weil if (err) 17363d14c5d2SYehuda Sadeh goto bad; 17371b83bef2SSage Weil 17381b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 17391b83bef2SSage Weil flags = ceph_decode_64(&p); 17401b83bef2SSage Weil result = ceph_decode_32(&p); 17411b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 17421b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 17431b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 17441b83bef2SSage Weil 17453d14c5d2SYehuda Sadeh /* lookup */ 1746ff513aceSIlya Dryomov down_read(&osdc->map_sem); 17473d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1748fcd00b68SIlya Dryomov req = lookup_request(&osdc->requests, tid); 17493d14c5d2SYehuda Sadeh if (req == NULL) { 17503d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 17518058fd45SAlex Elder goto bad_mutex; 17523d14c5d2SYehuda Sadeh } 17533d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 17541b83bef2SSage Weil 17551b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 17561b83bef2SSage Weil req, result); 17571b83bef2SSage Weil 175818741196SDan Carpenter ceph_decode_need(&p, end, 4, bad_put); 17591b83bef2SSage Weil numops = ceph_decode_32(&p); 17603f1af42aSIlya Dryomov if (numops > CEPH_OSD_MAX_OPS) 17611b83bef2SSage Weil goto bad_put; 17621b83bef2SSage Weil if (numops != req->r_num_ops) 17631b83bef2SSage Weil goto bad_put; 17641b83bef2SSage Weil payload_len = 0; 176518741196SDan Carpenter ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put); 17661b83bef2SSage Weil for (i = 0; i < numops; i++) { 17671b83bef2SSage Weil struct ceph_osd_op *op = p; 17681b83bef2SSage Weil int len; 17691b83bef2SSage Weil 17701b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 17717665d85bSYan, Zheng req->r_ops[i].outdata_len = len; 17721b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 17731b83bef2SSage Weil payload_len += len; 17741b83bef2SSage Weil p += sizeof(*op); 17751b83bef2SSage Weil } 17769fc6e064SAlex Elder bytes = le32_to_cpu(msg->hdr.data_len); 17779fc6e064SAlex Elder if (payload_len != bytes) { 1778b9a67899SJoe Perches pr_warn("sum of op payload lens %d != data_len %d\n", 17799fc6e064SAlex Elder payload_len, bytes); 17801b83bef2SSage Weil goto bad_put; 17811b83bef2SSage Weil } 17821b83bef2SSage Weil 178318741196SDan Carpenter ceph_decode_need(&p, end, 4 + numops * 4, bad_put); 17841b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 17851b83bef2SSage Weil for (i = 0; i < numops; i++) 17867665d85bSYan, Zheng req->r_ops[i].rval = ceph_decode_32(&p); 17873d14c5d2SYehuda Sadeh 1788205ee118SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 6) { 1789205ee118SIlya Dryomov p += 8 + 4; /* skip replay_version */ 1790205ee118SIlya Dryomov p += 8; /* skip user_version */ 1791205ee118SIlya Dryomov 1792b0b31a8fSIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 7) 1793b0b31a8fSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, bad_put); 1794b0b31a8fSIlya Dryomov else 1795b0b31a8fSIlya Dryomov decode_redir = 1; 1796b0b31a8fSIlya Dryomov } else { 1797b0b31a8fSIlya Dryomov decode_redir = 0; 1798b0b31a8fSIlya Dryomov } 1799b0b31a8fSIlya Dryomov 1800b0b31a8fSIlya Dryomov if (decode_redir) { 1801205ee118SIlya Dryomov err = ceph_redirect_decode(&p, end, &redir); 1802205ee118SIlya Dryomov if (err) 1803205ee118SIlya Dryomov goto bad_put; 1804205ee118SIlya Dryomov } else { 1805205ee118SIlya Dryomov redir.oloc.pool = -1; 1806205ee118SIlya Dryomov } 1807205ee118SIlya Dryomov 1808205ee118SIlya Dryomov if (redir.oloc.pool != -1) { 1809205ee118SIlya Dryomov dout("redirect pool %lld\n", redir.oloc.pool); 1810205ee118SIlya Dryomov 1811205ee118SIlya Dryomov __unregister_request(osdc, req); 1812205ee118SIlya Dryomov 1813205ee118SIlya Dryomov req->r_target_oloc = redir.oloc; /* struct */ 1814205ee118SIlya Dryomov 1815205ee118SIlya Dryomov /* 1816205ee118SIlya Dryomov * Start redirect requests with nofail=true. If 1817205ee118SIlya Dryomov * mapping fails, request will end up on the notarget 1818205ee118SIlya Dryomov * list, waiting for the new osdmap (which can take 1819205ee118SIlya Dryomov * a while), even though the original request mapped 1820205ee118SIlya Dryomov * successfully. In the future we might want to follow 1821205ee118SIlya Dryomov * original request's nofail setting here. 1822205ee118SIlya Dryomov */ 1823ff513aceSIlya Dryomov err = __ceph_osdc_start_request(osdc, req, true); 1824205ee118SIlya Dryomov BUG_ON(err); 1825205ee118SIlya Dryomov 1826ff513aceSIlya Dryomov goto out_unlock; 1827205ee118SIlya Dryomov } 1828205ee118SIlya Dryomov 1829eb845ff1SYan, Zheng already_completed = req->r_got_reply; 18303d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 18311b83bef2SSage Weil req->r_result = result; 18323d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 18333d14c5d2SYehuda Sadeh bytes); 18343d14c5d2SYehuda Sadeh if (req->r_result == 0) 18353d14c5d2SYehuda Sadeh req->r_result = bytes; 18363d14c5d2SYehuda Sadeh 18373d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 18381b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 18391b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 18403d14c5d2SYehuda Sadeh 18413d14c5d2SYehuda Sadeh req->r_got_reply = 1; 18423d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 18433d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 1844ff513aceSIlya Dryomov goto out_unlock; 18453d14c5d2SYehuda Sadeh } 18463d14c5d2SYehuda Sadeh 18473d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 18483d14c5d2SYehuda Sadeh 1849a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1850a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1851a40c4f10SYehuda Sadeh 18523d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 18533d14c5d2SYehuda Sadeh if (result < 0 || 18543d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 18553d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 18563d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 18573d14c5d2SYehuda Sadeh 18583d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1859ff513aceSIlya Dryomov up_read(&osdc->map_sem); 18603d14c5d2SYehuda Sadeh 1861eb845ff1SYan, Zheng if (!already_completed) { 186261c5d6bfSYan, Zheng if (req->r_unsafe_callback && 186361c5d6bfSYan, Zheng result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK)) 186461c5d6bfSYan, Zheng req->r_unsafe_callback(req, true); 18653d14c5d2SYehuda Sadeh if (req->r_callback) 18663d14c5d2SYehuda Sadeh req->r_callback(req, msg); 18673d14c5d2SYehuda Sadeh else 18683d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 1869eb845ff1SYan, Zheng } 18703d14c5d2SYehuda Sadeh 187161c5d6bfSYan, Zheng if (flags & CEPH_OSD_FLAG_ONDISK) { 187261c5d6bfSYan, Zheng if (req->r_unsafe_callback && already_completed) 187361c5d6bfSYan, Zheng req->r_unsafe_callback(req, false); 187425845472SSage Weil complete_request(req); 187561c5d6bfSYan, Zheng } 18763d14c5d2SYehuda Sadeh 1877ff513aceSIlya Dryomov out: 1878a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 18793d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 18803d14c5d2SYehuda Sadeh return; 1881ff513aceSIlya Dryomov out_unlock: 1882ff513aceSIlya Dryomov mutex_unlock(&osdc->request_mutex); 1883ff513aceSIlya Dryomov up_read(&osdc->map_sem); 1884ff513aceSIlya Dryomov goto out; 18853d14c5d2SYehuda Sadeh 18861b83bef2SSage Weil bad_put: 188737c89bdeSLi Wang req->r_result = -EIO; 188837c89bdeSLi Wang __unregister_request(osdc, req); 188937c89bdeSLi Wang if (req->r_callback) 189037c89bdeSLi Wang req->r_callback(req, msg); 189137c89bdeSLi Wang else 189237c89bdeSLi Wang complete_all(&req->r_completion); 189337c89bdeSLi Wang complete_request(req); 18941b83bef2SSage Weil ceph_osdc_put_request(req); 18958058fd45SAlex Elder bad_mutex: 18968058fd45SAlex Elder mutex_unlock(&osdc->request_mutex); 1897ff513aceSIlya Dryomov up_read(&osdc->map_sem); 18983d14c5d2SYehuda Sadeh bad: 18991b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 19001b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 19013d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 19023d14c5d2SYehuda Sadeh } 19033d14c5d2SYehuda Sadeh 19046f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 19053d14c5d2SYehuda Sadeh { 19063d14c5d2SYehuda Sadeh struct rb_node *p, *n; 19073d14c5d2SYehuda Sadeh 19087eb71e03SIlya Dryomov dout("%s %p\n", __func__, osdc); 19093d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 19106f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 19113d14c5d2SYehuda Sadeh 19123d14c5d2SYehuda Sadeh n = rb_next(p); 19133d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 19143d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 19153d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 19163d14c5d2SYehuda Sadeh osd->o_osd), 19173d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 19183d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 19193d14c5d2SYehuda Sadeh } 19203d14c5d2SYehuda Sadeh } 19213d14c5d2SYehuda Sadeh 19223d14c5d2SYehuda Sadeh /* 19236f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 19246f6c7006SSage Weil * no osd, request a new map. 19253d14c5d2SYehuda Sadeh * 1926e6d50f67SAlex Elder * Caller should hold map_sem for read. 19273d14c5d2SYehuda Sadeh */ 19289a1ea2dbSJosh Durgin static void kick_requests(struct ceph_osd_client *osdc, bool force_resend, 19299a1ea2dbSJosh Durgin bool force_resend_writes) 19303d14c5d2SYehuda Sadeh { 1931a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 19326f6c7006SSage Weil struct rb_node *p; 19336f6c7006SSage Weil int needmap = 0; 19346f6c7006SSage Weil int err; 19359a1ea2dbSJosh Durgin bool force_resend_req; 19363d14c5d2SYehuda Sadeh 19379a1ea2dbSJosh Durgin dout("kick_requests %s %s\n", force_resend ? " (force resend)" : "", 19389a1ea2dbSJosh Durgin force_resend_writes ? " (force resend writes)" : ""); 19393d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19406194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 19416f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 19426194ea89SSage Weil p = rb_next(p); 1943ab60b16dSAlex Elder 1944ab60b16dSAlex Elder /* 1945ab60b16dSAlex Elder * For linger requests that have not yet been 1946ab60b16dSAlex Elder * registered, move them to the linger list; they'll 1947ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 1948ab60b16dSAlex Elder * the request before re-registering it as a linger 1949ab60b16dSAlex Elder * request to ensure the __map_request() below 1950ab60b16dSAlex Elder * will decide it needs to be sent. 1951ab60b16dSAlex Elder */ 1952ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 1953ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 1954ab60b16dSAlex Elder req, req->r_tid, 1955ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 195696e4dac6SAlex Elder ceph_osdc_get_request(req); 1957ab60b16dSAlex Elder __unregister_request(osdc, req); 1958ab60b16dSAlex Elder __register_linger_request(osdc, req); 195996e4dac6SAlex Elder ceph_osdc_put_request(req); 1960ab60b16dSAlex Elder continue; 1961ab60b16dSAlex Elder } 1962ab60b16dSAlex Elder 19639a1ea2dbSJosh Durgin force_resend_req = force_resend || 19649a1ea2dbSJosh Durgin (force_resend_writes && 19659a1ea2dbSJosh Durgin req->r_flags & CEPH_OSD_FLAG_WRITE); 19669a1ea2dbSJosh Durgin err = __map_request(osdc, req, force_resend_req); 19676f6c7006SSage Weil if (err < 0) 19686f6c7006SSage Weil continue; /* error */ 19696f6c7006SSage Weil if (req->r_osd == NULL) { 19706f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 19716f6c7006SSage Weil needmap++; /* request a newer map */ 19726f6c7006SSage Weil } else if (err > 0) { 19736194ea89SSage Weil if (!req->r_linger) { 19746194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 19756194ea89SSage Weil req->r_tid, 19766f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 19776f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 19786f6c7006SSage Weil } 19796f6c7006SSage Weil } 19806194ea89SSage Weil } 1981a40c4f10SYehuda Sadeh 1982a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 1983a40c4f10SYehuda Sadeh r_linger_item) { 1984a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 1985a40c4f10SYehuda Sadeh 19869a1ea2dbSJosh Durgin err = __map_request(osdc, req, 19879a1ea2dbSJosh Durgin force_resend || force_resend_writes); 1988ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 1989a40c4f10SYehuda Sadeh if (err < 0) 1990a40c4f10SYehuda Sadeh continue; /* hrm! */ 1991b0494532SIlya Dryomov if (req->r_osd == NULL || err > 0) { 1992a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 1993b0494532SIlya Dryomov dout("lingering %p tid %llu maps to no osd\n", 1994b0494532SIlya Dryomov req, req->r_tid); 1995b0494532SIlya Dryomov /* 1996b0494532SIlya Dryomov * A homeless lingering request makes 1997b0494532SIlya Dryomov * no sense, as it's job is to keep 1998b0494532SIlya Dryomov * a particular OSD connection open. 1999b0494532SIlya Dryomov * Request a newer map and kick the 2000b0494532SIlya Dryomov * request, knowing that it won't be 2001b0494532SIlya Dryomov * resent until we actually get a map 2002b0494532SIlya Dryomov * that can tell us where to send it. 2003b0494532SIlya Dryomov */ 2004b0494532SIlya Dryomov needmap++; 2005a40c4f10SYehuda Sadeh } 2006a40c4f10SYehuda Sadeh 2007b0494532SIlya Dryomov dout("kicking lingering %p tid %llu osd%d\n", req, 2008b0494532SIlya Dryomov req->r_tid, req->r_osd ? req->r_osd->o_osd : -1); 2009a40c4f10SYehuda Sadeh __register_request(osdc, req); 2010c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 2011a40c4f10SYehuda Sadeh } 2012b0494532SIlya Dryomov } 201314d2f38dSAlex Elder reset_changed_osds(osdc); 20143d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 20153d14c5d2SYehuda Sadeh 20163d14c5d2SYehuda Sadeh if (needmap) { 20173d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 20183d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 20193d14c5d2SYehuda Sadeh } 20203d14c5d2SYehuda Sadeh } 20216f6c7006SSage Weil 20226f6c7006SSage Weil 20233d14c5d2SYehuda Sadeh /* 20243d14c5d2SYehuda Sadeh * Process updated osd map. 20253d14c5d2SYehuda Sadeh * 20263d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 20273d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 20283d14c5d2SYehuda Sadeh * off to different OSDs as needed. 20293d14c5d2SYehuda Sadeh */ 20303d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 20313d14c5d2SYehuda Sadeh { 20323d14c5d2SYehuda Sadeh void *p, *end, *next; 20333d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 20343d14c5d2SYehuda Sadeh u32 epoch; 20353d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 20363d14c5d2SYehuda Sadeh int err; 20373d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 20389a1ea2dbSJosh Durgin bool was_full; 20393d14c5d2SYehuda Sadeh 20403d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 20413d14c5d2SYehuda Sadeh p = msg->front.iov_base; 20423d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 20433d14c5d2SYehuda Sadeh 20443d14c5d2SYehuda Sadeh /* verify fsid */ 20453d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 20463d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 20473d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 20483d14c5d2SYehuda Sadeh return; 20493d14c5d2SYehuda Sadeh 20503d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 20513d14c5d2SYehuda Sadeh 20529a1ea2dbSJosh Durgin was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 20539a1ea2dbSJosh Durgin 20543d14c5d2SYehuda Sadeh /* incremental maps */ 20553d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 20563d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 20573d14c5d2SYehuda Sadeh while (nr_maps > 0) { 20583d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 20593d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 20603d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 20613d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 20623d14c5d2SYehuda Sadeh next = p + maplen; 20633d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 20643d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 20653d14c5d2SYehuda Sadeh epoch, maplen); 20663d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 20670c0a8de1SIlya Dryomov osdc->osdmap); 20683d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 20693d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 20703d14c5d2SYehuda Sadeh goto bad; 20713d14c5d2SYehuda Sadeh } 20723d14c5d2SYehuda Sadeh BUG_ON(!newmap); 20733d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 20743d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 20753d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 20763d14c5d2SYehuda Sadeh } 20779a1ea2dbSJosh Durgin was_full = was_full || 20789a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 20799a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 20809a1ea2dbSJosh Durgin kick_requests(osdc, 0, was_full); 20813d14c5d2SYehuda Sadeh } else { 20823d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 20833d14c5d2SYehuda Sadeh epoch, maplen); 20843d14c5d2SYehuda Sadeh } 20853d14c5d2SYehuda Sadeh p = next; 20863d14c5d2SYehuda Sadeh nr_maps--; 20873d14c5d2SYehuda Sadeh } 20883d14c5d2SYehuda Sadeh if (newmap) 20893d14c5d2SYehuda Sadeh goto done; 20903d14c5d2SYehuda Sadeh 20913d14c5d2SYehuda Sadeh /* full maps */ 20923d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 20933d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 20943d14c5d2SYehuda Sadeh while (nr_maps) { 20953d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 20963d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 20973d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 20983d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 20993d14c5d2SYehuda Sadeh if (nr_maps > 1) { 21003d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 21013d14c5d2SYehuda Sadeh epoch, maplen); 21023d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 21033d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 21043d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 21053d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 21063d14c5d2SYehuda Sadeh } else { 210738d6453cSSage Weil int skipped_map = 0; 210838d6453cSSage Weil 21093d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 2110a2505d63SIlya Dryomov newmap = ceph_osdmap_decode(&p, p+maplen); 21113d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 21123d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 21133d14c5d2SYehuda Sadeh goto bad; 21143d14c5d2SYehuda Sadeh } 21153d14c5d2SYehuda Sadeh BUG_ON(!newmap); 21163d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 21173d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 211838d6453cSSage Weil if (oldmap) { 211938d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 212038d6453cSSage Weil skipped_map = 1; 21213d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 212238d6453cSSage Weil } 21239a1ea2dbSJosh Durgin was_full = was_full || 21249a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 21259a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 21269a1ea2dbSJosh Durgin kick_requests(osdc, skipped_map, was_full); 21273d14c5d2SYehuda Sadeh } 21283d14c5d2SYehuda Sadeh p += maplen; 21293d14c5d2SYehuda Sadeh nr_maps--; 21303d14c5d2SYehuda Sadeh } 21313d14c5d2SYehuda Sadeh 2132b72e19b9SDan Carpenter if (!osdc->osdmap) 2133b72e19b9SDan Carpenter goto bad; 21343d14c5d2SYehuda Sadeh done: 21353d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 213682dcabadSIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 213782dcabadSIlya Dryomov osdc->osdmap->epoch); 2138cd634fb6SSage Weil 2139cd634fb6SSage Weil /* 2140cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 2141cd634fb6SSage Weil * we find out when we are no longer full and stop returning 2142cd634fb6SSage Weil * ENOSPC. 2143cd634fb6SSage Weil */ 2144d29adb34SJosh Durgin if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 2145d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || 2146d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) 2147cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 2148cd634fb6SSage Weil 2149f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 2150f9d25199SAlex Elder __send_queued(osdc); 2151f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 21523d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 21533d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 21543d14c5d2SYehuda Sadeh return; 21553d14c5d2SYehuda Sadeh 21563d14c5d2SYehuda Sadeh bad: 21573d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 21583d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 21593d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 21603d14c5d2SYehuda Sadeh } 21613d14c5d2SYehuda Sadeh 21623d14c5d2SYehuda Sadeh /* 2163a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 2164a40c4f10SYehuda Sadeh * 2165a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 2166a40c4f10SYehuda Sadeh */ 2167a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 2168a40c4f10SYehuda Sadeh { 2169a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 2170a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 2171a40c4f10SYehuda Sadeh 2172a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 2173a40c4f10SYehuda Sadeh kfree(event); 2174a40c4f10SYehuda Sadeh } 2175a40c4f10SYehuda Sadeh 2176a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 2177a40c4f10SYehuda Sadeh { 2178a40c4f10SYehuda Sadeh kref_get(&event->kref); 2179a40c4f10SYehuda Sadeh } 2180a40c4f10SYehuda Sadeh 2181a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 2182a40c4f10SYehuda Sadeh { 2183a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 2184a40c4f10SYehuda Sadeh } 2185a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 2186a40c4f10SYehuda Sadeh 2187a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 2188a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 2189a40c4f10SYehuda Sadeh { 2190a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2191a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2192a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2193a40c4f10SYehuda Sadeh 2194a40c4f10SYehuda Sadeh while (*p) { 2195a40c4f10SYehuda Sadeh parent = *p; 2196a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2197a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 2198a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2199a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 2200a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2201a40c4f10SYehuda Sadeh else 2202a40c4f10SYehuda Sadeh BUG(); 2203a40c4f10SYehuda Sadeh } 2204a40c4f10SYehuda Sadeh 2205a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 2206a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 2207a40c4f10SYehuda Sadeh } 2208a40c4f10SYehuda Sadeh 2209a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 2210a40c4f10SYehuda Sadeh u64 cookie) 2211a40c4f10SYehuda Sadeh { 2212a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2213a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2214a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2215a40c4f10SYehuda Sadeh 2216a40c4f10SYehuda Sadeh while (*p) { 2217a40c4f10SYehuda Sadeh parent = *p; 2218a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2219a40c4f10SYehuda Sadeh if (cookie < event->cookie) 2220a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2221a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 2222a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2223a40c4f10SYehuda Sadeh else 2224a40c4f10SYehuda Sadeh return event; 2225a40c4f10SYehuda Sadeh } 2226a40c4f10SYehuda Sadeh return NULL; 2227a40c4f10SYehuda Sadeh } 2228a40c4f10SYehuda Sadeh 2229a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 2230a40c4f10SYehuda Sadeh { 2231a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2232a40c4f10SYehuda Sadeh 2233a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 2234a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 2235a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 2236a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2237a40c4f10SYehuda Sadeh } else { 2238a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 2239a40c4f10SYehuda Sadeh } 2240a40c4f10SYehuda Sadeh } 2241a40c4f10SYehuda Sadeh 2242a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 2243a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 22443c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 2245a40c4f10SYehuda Sadeh { 2246a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2247a40c4f10SYehuda Sadeh 2248a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 2249a40c4f10SYehuda Sadeh if (!event) 2250a40c4f10SYehuda Sadeh return -ENOMEM; 2251a40c4f10SYehuda Sadeh 2252a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 2253a40c4f10SYehuda Sadeh event->cb = event_cb; 22543c663bbdSAlex Elder event->one_shot = 0; 2255a40c4f10SYehuda Sadeh event->data = data; 2256a40c4f10SYehuda Sadeh event->osdc = osdc; 2257a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 22583ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 2259a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 2260a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 2261a40c4f10SYehuda Sadeh 2262a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2263a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 2264a40c4f10SYehuda Sadeh __insert_event(osdc, event); 2265a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2266a40c4f10SYehuda Sadeh 2267a40c4f10SYehuda Sadeh *pevent = event; 2268a40c4f10SYehuda Sadeh return 0; 2269a40c4f10SYehuda Sadeh } 2270a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 2271a40c4f10SYehuda Sadeh 2272a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 2273a40c4f10SYehuda Sadeh { 2274a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2275a40c4f10SYehuda Sadeh 2276a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 2277a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2278a40c4f10SYehuda Sadeh __remove_event(event); 2279a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2280a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 2281a40c4f10SYehuda Sadeh } 2282a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 2283a40c4f10SYehuda Sadeh 2284a40c4f10SYehuda Sadeh 2285a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 2286a40c4f10SYehuda Sadeh { 2287a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 2288a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 2289a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 2290a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 2291a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 2292a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 2293a40c4f10SYehuda Sadeh 2294a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 2295a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 2296a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 2297a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2298a40c4f10SYehuda Sadeh kfree(event_work); 2299a40c4f10SYehuda Sadeh } 2300a40c4f10SYehuda Sadeh 2301a40c4f10SYehuda Sadeh 2302a40c4f10SYehuda Sadeh /* 2303a40c4f10SYehuda Sadeh * Process osd watch notifications 2304a40c4f10SYehuda Sadeh */ 23053c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 23063c663bbdSAlex Elder struct ceph_msg *msg) 2307a40c4f10SYehuda Sadeh { 2308a40c4f10SYehuda Sadeh void *p, *end; 2309a40c4f10SYehuda Sadeh u8 proto_ver; 2310a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 2311a40c4f10SYehuda Sadeh u8 opcode; 2312a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2313a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 2314a40c4f10SYehuda Sadeh 2315a40c4f10SYehuda Sadeh p = msg->front.iov_base; 2316a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 2317a40c4f10SYehuda Sadeh 2318a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 2319a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 2320a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 2321a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 2322a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 2323a40c4f10SYehuda Sadeh 2324a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2325a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 2326a40c4f10SYehuda Sadeh if (event) { 23273c663bbdSAlex Elder BUG_ON(event->one_shot); 2328a40c4f10SYehuda Sadeh get_event(event); 2329a40c4f10SYehuda Sadeh } 2330a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2331a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 2332a40c4f10SYehuda Sadeh cookie, ver, event); 2333a40c4f10SYehuda Sadeh if (event) { 2334a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 2335a40c4f10SYehuda Sadeh if (!event_work) { 233691883cd2SIlya Dryomov pr_err("couldn't allocate event_work\n"); 233791883cd2SIlya Dryomov ceph_osdc_put_event(event); 233891883cd2SIlya Dryomov return; 2339a40c4f10SYehuda Sadeh } 23406b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 2341a40c4f10SYehuda Sadeh event_work->event = event; 2342a40c4f10SYehuda Sadeh event_work->ver = ver; 2343a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 2344a40c4f10SYehuda Sadeh event_work->opcode = opcode; 234591883cd2SIlya Dryomov 234691883cd2SIlya Dryomov queue_work(osdc->notify_wq, &event_work->work); 2347a40c4f10SYehuda Sadeh } 2348a40c4f10SYehuda Sadeh 2349a40c4f10SYehuda Sadeh return; 2350a40c4f10SYehuda Sadeh 2351a40c4f10SYehuda Sadeh bad: 2352a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 2353a40c4f10SYehuda Sadeh } 2354a40c4f10SYehuda Sadeh 2355a40c4f10SYehuda Sadeh /* 2356e65550fdSAlex Elder * build new request AND message 2357e65550fdSAlex Elder * 2358e65550fdSAlex Elder */ 2359e65550fdSAlex Elder void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, 2360e65550fdSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 2361e65550fdSAlex Elder struct timespec *mtime) 2362e65550fdSAlex Elder { 2363e65550fdSAlex Elder struct ceph_msg *msg = req->r_request; 2364e65550fdSAlex Elder void *p; 2365e65550fdSAlex Elder size_t msg_size; 2366e65550fdSAlex Elder int flags = req->r_flags; 2367e65550fdSAlex Elder u64 data_len; 2368e65550fdSAlex Elder unsigned int i; 2369e65550fdSAlex Elder 2370e65550fdSAlex Elder req->r_snapid = snap_id; 237184127282SIlya Dryomov WARN_ON(snapc != req->r_snapc); 2372e65550fdSAlex Elder 2373e65550fdSAlex Elder /* encode request */ 2374e65550fdSAlex Elder msg->hdr.version = cpu_to_le16(4); 2375e65550fdSAlex Elder 2376e65550fdSAlex Elder p = msg->front.iov_base; 2377e65550fdSAlex Elder ceph_encode_32(&p, 1); /* client_inc is always 1 */ 2378e65550fdSAlex Elder req->r_request_osdmap_epoch = p; 2379e65550fdSAlex Elder p += 4; 2380e65550fdSAlex Elder req->r_request_flags = p; 2381e65550fdSAlex Elder p += 4; 2382e65550fdSAlex Elder if (req->r_flags & CEPH_OSD_FLAG_WRITE) 2383e65550fdSAlex Elder ceph_encode_timespec(p, mtime); 2384e65550fdSAlex Elder p += sizeof(struct ceph_timespec); 2385e65550fdSAlex Elder req->r_request_reassert_version = p; 2386e65550fdSAlex Elder p += sizeof(struct ceph_eversion); /* will get filled in */ 2387e65550fdSAlex Elder 2388e65550fdSAlex Elder /* oloc */ 2389e65550fdSAlex Elder ceph_encode_8(&p, 4); 2390e65550fdSAlex Elder ceph_encode_8(&p, 4); 2391e65550fdSAlex Elder ceph_encode_32(&p, 8 + 4 + 4); 2392e65550fdSAlex Elder req->r_request_pool = p; 2393e65550fdSAlex Elder p += 8; 2394e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2395e65550fdSAlex Elder ceph_encode_32(&p, 0); /* key len */ 2396e65550fdSAlex Elder 2397e65550fdSAlex Elder ceph_encode_8(&p, 1); 2398e65550fdSAlex Elder req->r_request_pgid = p; 2399e65550fdSAlex Elder p += 8 + 4; 2400e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2401e65550fdSAlex Elder 2402e65550fdSAlex Elder /* oid */ 24033c972c95SIlya Dryomov ceph_encode_32(&p, req->r_base_oid.name_len); 24043c972c95SIlya Dryomov memcpy(p, req->r_base_oid.name, req->r_base_oid.name_len); 2405d30291b9SIlya Dryomov dout("oid %*pE len %d\n", req->r_base_oid.name_len, 24063c972c95SIlya Dryomov req->r_base_oid.name, req->r_base_oid.name_len); 24073c972c95SIlya Dryomov p += req->r_base_oid.name_len; 2408e65550fdSAlex Elder 2409e65550fdSAlex Elder /* ops--can imply data */ 2410e65550fdSAlex Elder ceph_encode_16(&p, (u16)req->r_num_ops); 2411e65550fdSAlex Elder data_len = 0; 2412e65550fdSAlex Elder for (i = 0; i < req->r_num_ops; i++) { 2413e65550fdSAlex Elder data_len += osd_req_encode_op(req, p, i); 2414e65550fdSAlex Elder p += sizeof(struct ceph_osd_op); 2415e65550fdSAlex Elder } 2416e65550fdSAlex Elder 2417e65550fdSAlex Elder /* snaps */ 2418e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapid); 2419e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 2420e65550fdSAlex Elder ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 2421e65550fdSAlex Elder if (req->r_snapc) { 242284127282SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) { 2423e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc->snaps[i]); 2424e65550fdSAlex Elder } 2425e65550fdSAlex Elder } 2426e65550fdSAlex Elder 2427e65550fdSAlex Elder req->r_request_attempts = p; 2428e65550fdSAlex Elder p += 4; 2429e65550fdSAlex Elder 2430e65550fdSAlex Elder /* data */ 2431e65550fdSAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 2432e65550fdSAlex Elder u16 data_off; 2433e65550fdSAlex Elder 2434e65550fdSAlex Elder /* 2435e65550fdSAlex Elder * The header "data_off" is a hint to the receiver 2436e65550fdSAlex Elder * allowing it to align received data into its 2437e65550fdSAlex Elder * buffers such that there's no need to re-copy 2438e65550fdSAlex Elder * it before writing it to disk (direct I/O). 2439e65550fdSAlex Elder */ 2440e65550fdSAlex Elder data_off = (u16) (off & 0xffff); 2441e65550fdSAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 2442e65550fdSAlex Elder } 2443e65550fdSAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 2444e65550fdSAlex Elder 2445e65550fdSAlex Elder BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 2446e65550fdSAlex Elder msg_size = p - msg->front.iov_base; 2447e65550fdSAlex Elder msg->front.iov_len = msg_size; 2448e65550fdSAlex Elder msg->hdr.front_len = cpu_to_le32(msg_size); 2449e65550fdSAlex Elder 2450e65550fdSAlex Elder dout("build_request msg_size was %d\n", (int)msg_size); 2451e65550fdSAlex Elder } 2452e65550fdSAlex Elder EXPORT_SYMBOL(ceph_osdc_build_request); 2453e65550fdSAlex Elder 2454e65550fdSAlex Elder /* 24553d14c5d2SYehuda Sadeh * Register request, send initial attempt. 24563d14c5d2SYehuda Sadeh */ 24573d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 24583d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 24593d14c5d2SYehuda Sadeh bool nofail) 24603d14c5d2SYehuda Sadeh { 24610bbfdfe8SIlya Dryomov int rc; 24623d14c5d2SYehuda Sadeh 24633d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 24643d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 24650bbfdfe8SIlya Dryomov 24660bbfdfe8SIlya Dryomov rc = __ceph_osdc_start_request(osdc, req, nofail); 24670bbfdfe8SIlya Dryomov 24683d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 24693d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 24700bbfdfe8SIlya Dryomov 24713d14c5d2SYehuda Sadeh return rc; 24723d14c5d2SYehuda Sadeh } 24733d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 24743d14c5d2SYehuda Sadeh 24753d14c5d2SYehuda Sadeh /* 2476c9f9b93dSIlya Dryomov * Unregister a registered request. The request is not completed (i.e. 2477c9f9b93dSIlya Dryomov * no callbacks or wakeups) - higher layers are supposed to know what 2478c9f9b93dSIlya Dryomov * they are canceling. 2479c9f9b93dSIlya Dryomov */ 2480c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 2481c9f9b93dSIlya Dryomov { 2482c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 2483c9f9b93dSIlya Dryomov 2484c9f9b93dSIlya Dryomov mutex_lock(&osdc->request_mutex); 2485c9f9b93dSIlya Dryomov if (req->r_linger) 2486c9f9b93dSIlya Dryomov __unregister_linger_request(osdc, req); 2487c9f9b93dSIlya Dryomov __unregister_request(osdc, req); 2488c9f9b93dSIlya Dryomov mutex_unlock(&osdc->request_mutex); 2489c9f9b93dSIlya Dryomov 2490c9f9b93dSIlya Dryomov dout("%s %p tid %llu canceled\n", __func__, req, req->r_tid); 2491c9f9b93dSIlya Dryomov } 2492c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 2493c9f9b93dSIlya Dryomov 2494c9f9b93dSIlya Dryomov /* 24953d14c5d2SYehuda Sadeh * wait for a request to complete 24963d14c5d2SYehuda Sadeh */ 24973d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 24983d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 24993d14c5d2SYehuda Sadeh { 25003d14c5d2SYehuda Sadeh int rc; 25013d14c5d2SYehuda Sadeh 2502c9f9b93dSIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 2503c9f9b93dSIlya Dryomov 25043d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 25053d14c5d2SYehuda Sadeh if (rc < 0) { 2506c9f9b93dSIlya Dryomov dout("%s %p tid %llu interrupted\n", __func__, req, req->r_tid); 2507c9f9b93dSIlya Dryomov ceph_osdc_cancel_request(req); 250825845472SSage Weil complete_request(req); 25093d14c5d2SYehuda Sadeh return rc; 25103d14c5d2SYehuda Sadeh } 25113d14c5d2SYehuda Sadeh 2512c9f9b93dSIlya Dryomov dout("%s %p tid %llu result %d\n", __func__, req, req->r_tid, 2513c9f9b93dSIlya Dryomov req->r_result); 25143d14c5d2SYehuda Sadeh return req->r_result; 25153d14c5d2SYehuda Sadeh } 25163d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 25173d14c5d2SYehuda Sadeh 25183d14c5d2SYehuda Sadeh /* 25193d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 25203d14c5d2SYehuda Sadeh */ 25213d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 25223d14c5d2SYehuda Sadeh { 25233d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 25243d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 25253d14c5d2SYehuda Sadeh 25263d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 25273d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 25283d14c5d2SYehuda Sadeh while (1) { 25293d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 25303d14c5d2SYehuda Sadeh if (!req) 25313d14c5d2SYehuda Sadeh break; 25323d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 25333d14c5d2SYehuda Sadeh break; 25343d14c5d2SYehuda Sadeh 25353d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 25363d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 25373d14c5d2SYehuda Sadeh continue; 25383d14c5d2SYehuda Sadeh 25393d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 25403d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 25413d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 25423d14c5d2SYehuda Sadeh req->r_tid, last_tid); 25433d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 25443d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 25453d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 25463d14c5d2SYehuda Sadeh } 25473d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 25483d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 25493d14c5d2SYehuda Sadeh } 25503d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 25513d14c5d2SYehuda Sadeh 25523d14c5d2SYehuda Sadeh /* 2553dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 2554dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 2555dd935f44SJosh Durgin */ 2556f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 2557dd935f44SJosh Durgin { 2558dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 2559dd935f44SJosh Durgin } 2560dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 2561dd935f44SJosh Durgin 2562dd935f44SJosh Durgin 2563dd935f44SJosh Durgin /* 25643d14c5d2SYehuda Sadeh * init, shutdown 25653d14c5d2SYehuda Sadeh */ 25663d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 25673d14c5d2SYehuda Sadeh { 25683d14c5d2SYehuda Sadeh int err; 25693d14c5d2SYehuda Sadeh 25703d14c5d2SYehuda Sadeh dout("init\n"); 25713d14c5d2SYehuda Sadeh osdc->client = client; 25723d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 25733d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 25743d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 25753d14c5d2SYehuda Sadeh osdc->last_tid = 0; 25763d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 25773d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 25783d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 25793d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 25806f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 25816f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 2582a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 25833d14c5d2SYehuda Sadeh osdc->num_requests = 0; 25843d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 25853d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2586a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 2587a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 2588a40c4f10SYehuda Sadeh osdc->event_count = 0; 25893d14c5d2SYehuda Sadeh 25903d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 2591a319bf56SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 25923d14c5d2SYehuda Sadeh 25933d14c5d2SYehuda Sadeh err = -ENOMEM; 25949e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 25959e767adbSIlya Dryomov ceph_osd_request_cache); 25963d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 25973d14c5d2SYehuda Sadeh goto out; 25983d14c5d2SYehuda Sadeh 2599d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2600711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op"); 26013d14c5d2SYehuda Sadeh if (err < 0) 26023d14c5d2SYehuda Sadeh goto out_mempool; 2603d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 2604711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op_reply"); 26053d14c5d2SYehuda Sadeh if (err < 0) 26063d14c5d2SYehuda Sadeh goto out_msgpool; 2607a40c4f10SYehuda Sadeh 2608dbcae088SDan Carpenter err = -ENOMEM; 2609a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2610dbcae088SDan Carpenter if (!osdc->notify_wq) 2611c172ec5cSIlya Dryomov goto out_msgpool_reply; 2612c172ec5cSIlya Dryomov 26133d14c5d2SYehuda Sadeh return 0; 26143d14c5d2SYehuda Sadeh 2615c172ec5cSIlya Dryomov out_msgpool_reply: 2616c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 26173d14c5d2SYehuda Sadeh out_msgpool: 26183d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 26193d14c5d2SYehuda Sadeh out_mempool: 26203d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 26213d14c5d2SYehuda Sadeh out: 26223d14c5d2SYehuda Sadeh return err; 26233d14c5d2SYehuda Sadeh } 26243d14c5d2SYehuda Sadeh 26253d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 26263d14c5d2SYehuda Sadeh { 2627a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2628a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 26293d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 26303d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 263142a2c09fSIlya Dryomov 263242a2c09fSIlya Dryomov mutex_lock(&osdc->request_mutex); 263342a2c09fSIlya Dryomov while (!RB_EMPTY_ROOT(&osdc->osds)) { 263442a2c09fSIlya Dryomov struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 263542a2c09fSIlya Dryomov struct ceph_osd, o_node); 263642a2c09fSIlya Dryomov remove_osd(osdc, osd); 263742a2c09fSIlya Dryomov } 263842a2c09fSIlya Dryomov mutex_unlock(&osdc->request_mutex); 263942a2c09fSIlya Dryomov 26403d14c5d2SYehuda Sadeh if (osdc->osdmap) { 26413d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 26423d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 26433d14c5d2SYehuda Sadeh } 26443d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 26453d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 26463d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 26473d14c5d2SYehuda Sadeh } 26483d14c5d2SYehuda Sadeh 26493d14c5d2SYehuda Sadeh /* 26503d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 26513d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 26523d14c5d2SYehuda Sadeh */ 26533d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 26543d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 26553d14c5d2SYehuda Sadeh u64 off, u64 *plen, 26563d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2657b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 26583d14c5d2SYehuda Sadeh { 26593d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 26603d14c5d2SYehuda Sadeh int rc = 0; 26613d14c5d2SYehuda Sadeh 26623d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 26633d14c5d2SYehuda Sadeh vino.snap, off, *plen); 2664715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 26653d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 2666acead002SAlex Elder NULL, truncate_seq, truncate_size, 2667153e5167SAlex Elder false); 26686816282dSSage Weil if (IS_ERR(req)) 26696816282dSSage Weil return PTR_ERR(req); 26703d14c5d2SYehuda Sadeh 26713d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 26720fff87ecSAlex Elder 2673406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 2674a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 26753d14c5d2SYehuda Sadeh 2676e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 267743bfe5deSAlex Elder off, *plen, *plen, page_align); 26783d14c5d2SYehuda Sadeh 267979528734SAlex Elder ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); 268002ee07d3SAlex Elder 26813d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 26823d14c5d2SYehuda Sadeh if (!rc) 26833d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 26843d14c5d2SYehuda Sadeh 26853d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 26863d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 26873d14c5d2SYehuda Sadeh return rc; 26883d14c5d2SYehuda Sadeh } 26893d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 26903d14c5d2SYehuda Sadeh 26913d14c5d2SYehuda Sadeh /* 26923d14c5d2SYehuda Sadeh * do a synchronous write on N pages 26933d14c5d2SYehuda Sadeh */ 26943d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 26953d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 26963d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 26973d14c5d2SYehuda Sadeh u64 off, u64 len, 26983d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 26993d14c5d2SYehuda Sadeh struct timespec *mtime, 270024808826SAlex Elder struct page **pages, int num_pages) 27013d14c5d2SYehuda Sadeh { 27023d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 27033d14c5d2SYehuda Sadeh int rc = 0; 2704b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 27053d14c5d2SYehuda Sadeh 2706acead002SAlex Elder BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ 2707715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 27083d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 270924808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2710acead002SAlex Elder snapc, truncate_seq, truncate_size, 2711153e5167SAlex Elder true); 27126816282dSSage Weil if (IS_ERR(req)) 27136816282dSSage Weil return PTR_ERR(req); 27143d14c5d2SYehuda Sadeh 27153d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 2716406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 271743bfe5deSAlex Elder false, false); 271843bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 27193d14c5d2SYehuda Sadeh 272079528734SAlex Elder ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); 272102ee07d3SAlex Elder 272287f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 27233d14c5d2SYehuda Sadeh if (!rc) 27243d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 27253d14c5d2SYehuda Sadeh 27263d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 27273d14c5d2SYehuda Sadeh if (rc == 0) 27283d14c5d2SYehuda Sadeh rc = len; 27293d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 27303d14c5d2SYehuda Sadeh return rc; 27313d14c5d2SYehuda Sadeh } 27323d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 27333d14c5d2SYehuda Sadeh 27345522ae0bSAlex Elder int ceph_osdc_setup(void) 27355522ae0bSAlex Elder { 27363f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 27373f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 27383f1af42aSIlya Dryomov 27395522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 27403f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 27413f1af42aSIlya Dryomov 0, 0, NULL); 27425522ae0bSAlex Elder 27435522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 27445522ae0bSAlex Elder } 27455522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 27465522ae0bSAlex Elder 27475522ae0bSAlex Elder void ceph_osdc_cleanup(void) 27485522ae0bSAlex Elder { 27495522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 27505522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 27515522ae0bSAlex Elder ceph_osd_request_cache = NULL; 27525522ae0bSAlex Elder } 27535522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 27545522ae0bSAlex Elder 27553d14c5d2SYehuda Sadeh /* 27563d14c5d2SYehuda Sadeh * handle incoming message 27573d14c5d2SYehuda Sadeh */ 27583d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 27593d14c5d2SYehuda Sadeh { 27603d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 27613d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 27623d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 27633d14c5d2SYehuda Sadeh 27643d14c5d2SYehuda Sadeh if (!osd) 27653d14c5d2SYehuda Sadeh goto out; 27663d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 27673d14c5d2SYehuda Sadeh 27683d14c5d2SYehuda Sadeh switch (type) { 27693d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 27703d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 27713d14c5d2SYehuda Sadeh break; 27723d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 277370cf052dSShraddha Barke handle_reply(osdc, msg); 27743d14c5d2SYehuda Sadeh break; 2775a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2776a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2777a40c4f10SYehuda Sadeh break; 27783d14c5d2SYehuda Sadeh 27793d14c5d2SYehuda Sadeh default: 27803d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 27813d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 27823d14c5d2SYehuda Sadeh } 27833d14c5d2SYehuda Sadeh out: 27843d14c5d2SYehuda Sadeh ceph_msg_put(msg); 27853d14c5d2SYehuda Sadeh } 27863d14c5d2SYehuda Sadeh 27873d14c5d2SYehuda Sadeh /* 2788d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 2789d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 2790d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 27913d14c5d2SYehuda Sadeh */ 27923d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 27933d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 27943d14c5d2SYehuda Sadeh int *skip) 27953d14c5d2SYehuda Sadeh { 27963d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 27973d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 27983d14c5d2SYehuda Sadeh struct ceph_msg *m; 27993d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 28003f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 28013d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 28023d14c5d2SYehuda Sadeh u64 tid; 28033d14c5d2SYehuda Sadeh 28043d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 28053d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 2806fcd00b68SIlya Dryomov req = lookup_request(&osdc->requests, tid); 28073d14c5d2SYehuda Sadeh if (!req) { 2808cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 2809cd8140c6SIlya Dryomov osd->o_osd, tid); 28103d14c5d2SYehuda Sadeh m = NULL; 2811d15f9d69SIlya Dryomov *skip = 1; 28123d14c5d2SYehuda Sadeh goto out; 28133d14c5d2SYehuda Sadeh } 28143d14c5d2SYehuda Sadeh 28158921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 28163d14c5d2SYehuda Sadeh 2817f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 2818d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 2819d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 2820d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 28213f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 28223f0a4ac5SIlya Dryomov false); 28233d14c5d2SYehuda Sadeh if (!m) 28243d14c5d2SYehuda Sadeh goto out; 28253d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 28263d14c5d2SYehuda Sadeh req->r_reply = m; 28273d14c5d2SYehuda Sadeh } 28283d14c5d2SYehuda Sadeh 2829d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 2830d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 2831d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 2832d15f9d69SIlya Dryomov req->r_reply->data_length); 28333d14c5d2SYehuda Sadeh m = NULL; 2834d15f9d69SIlya Dryomov *skip = 1; 28353d14c5d2SYehuda Sadeh goto out; 28363d14c5d2SYehuda Sadeh } 2837d15f9d69SIlya Dryomov 2838d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 28393d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 28403d14c5d2SYehuda Sadeh 28413d14c5d2SYehuda Sadeh out: 28423d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 28433d14c5d2SYehuda Sadeh return m; 28443d14c5d2SYehuda Sadeh } 28453d14c5d2SYehuda Sadeh 28463d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 28473d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 28483d14c5d2SYehuda Sadeh int *skip) 28493d14c5d2SYehuda Sadeh { 28503d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28513d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 28523d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 28533d14c5d2SYehuda Sadeh 28541c20f2d2SAlex Elder *skip = 0; 28553d14c5d2SYehuda Sadeh switch (type) { 28563d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2857a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2858b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 28593d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 28603d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 28613d14c5d2SYehuda Sadeh default: 28623d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 28633d14c5d2SYehuda Sadeh osd->o_osd); 28643d14c5d2SYehuda Sadeh *skip = 1; 28653d14c5d2SYehuda Sadeh return NULL; 28663d14c5d2SYehuda Sadeh } 28673d14c5d2SYehuda Sadeh } 28683d14c5d2SYehuda Sadeh 28693d14c5d2SYehuda Sadeh /* 28703d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 28713d14c5d2SYehuda Sadeh */ 28723d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 28733d14c5d2SYehuda Sadeh { 28743d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28753d14c5d2SYehuda Sadeh if (get_osd(osd)) 28763d14c5d2SYehuda Sadeh return con; 28773d14c5d2SYehuda Sadeh return NULL; 28783d14c5d2SYehuda Sadeh } 28793d14c5d2SYehuda Sadeh 28803d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 28813d14c5d2SYehuda Sadeh { 28823d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28833d14c5d2SYehuda Sadeh put_osd(osd); 28843d14c5d2SYehuda Sadeh } 28853d14c5d2SYehuda Sadeh 28863d14c5d2SYehuda Sadeh /* 28873d14c5d2SYehuda Sadeh * authentication 28883d14c5d2SYehuda Sadeh */ 2889a3530df3SAlex Elder /* 2890a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2891a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2892a3530df3SAlex Elder */ 2893a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 28948f43fb53SAlex Elder int *proto, int force_new) 28953d14c5d2SYehuda Sadeh { 28963d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 28973d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 28983d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 289974f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 29003d14c5d2SYehuda Sadeh 290174f1869fSAlex Elder if (force_new && auth->authorizer) { 29026c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 290374f1869fSAlex Elder auth->authorizer = NULL; 29043d14c5d2SYehuda Sadeh } 290527859f97SSage Weil if (!auth->authorizer) { 290627859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2907a3530df3SAlex Elder auth); 29083d14c5d2SYehuda Sadeh if (ret) 2909a3530df3SAlex Elder return ERR_PTR(ret); 291027859f97SSage Weil } else { 291127859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 29120bed9b5cSSage Weil auth); 29130bed9b5cSSage Weil if (ret) 29140bed9b5cSSage Weil return ERR_PTR(ret); 29153d14c5d2SYehuda Sadeh } 29163d14c5d2SYehuda Sadeh *proto = ac->protocol; 291774f1869fSAlex Elder 2918a3530df3SAlex Elder return auth; 29193d14c5d2SYehuda Sadeh } 29203d14c5d2SYehuda Sadeh 29213d14c5d2SYehuda Sadeh 29223d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 29233d14c5d2SYehuda Sadeh { 29243d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 29253d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 29263d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 29273d14c5d2SYehuda Sadeh 292827859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 29293d14c5d2SYehuda Sadeh } 29303d14c5d2SYehuda Sadeh 29313d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 29323d14c5d2SYehuda Sadeh { 29333d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 29343d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 29353d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 29363d14c5d2SYehuda Sadeh 293727859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 29383d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 29393d14c5d2SYehuda Sadeh } 29403d14c5d2SYehuda Sadeh 294179dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 294233d07337SYan, Zheng { 294379dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 294433d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 294579dbd1baSIlya Dryomov 294633d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 294733d07337SYan, Zheng } 294833d07337SYan, Zheng 294979dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 295033d07337SYan, Zheng { 295179dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 295233d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 295379dbd1baSIlya Dryomov 295433d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 295533d07337SYan, Zheng } 295633d07337SYan, Zheng 29573d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 29583d14c5d2SYehuda Sadeh .get = get_osd_con, 29593d14c5d2SYehuda Sadeh .put = put_osd_con, 29603d14c5d2SYehuda Sadeh .dispatch = dispatch, 29613d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 29623d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 29633d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 29643d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 296579dbd1baSIlya Dryomov .sign_message = osd_sign_message, 296679dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 29673d14c5d2SYehuda Sadeh .fault = osd_reset, 29683d14c5d2SYehuda Sadeh }; 2969