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 146a4ce40a9SAlex Elder struct ceph_osd_data * 147a4ce40a9SAlex Elder osd_req_op_cls_response_data(struct ceph_osd_request *osd_req, 148a4ce40a9SAlex Elder unsigned int which) 149a4ce40a9SAlex Elder { 150863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, cls, response_data); 151a4ce40a9SAlex Elder } 152a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data); /* ??? */ 153a4ce40a9SAlex Elder 15449719778SAlex Elder void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, 15549719778SAlex Elder unsigned int which, struct page **pages, 15649719778SAlex Elder u64 length, u32 alignment, 15749719778SAlex Elder bool pages_from_pool, bool own_pages) 15849719778SAlex Elder { 15949719778SAlex Elder struct ceph_osd_data *osd_data; 16049719778SAlex Elder 16149719778SAlex Elder osd_data = osd_req_op_raw_data_in(osd_req, which); 16249719778SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 16349719778SAlex Elder pages_from_pool, own_pages); 16449719778SAlex Elder } 16549719778SAlex Elder EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); 16649719778SAlex Elder 167a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, 168406e2c9fSAlex Elder unsigned int which, struct page **pages, 169406e2c9fSAlex Elder u64 length, u32 alignment, 170a4ce40a9SAlex Elder bool pages_from_pool, bool own_pages) 171a4ce40a9SAlex Elder { 172a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 173a4ce40a9SAlex Elder 174863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 175a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 176a4ce40a9SAlex Elder pages_from_pool, own_pages); 177a4ce40a9SAlex Elder } 178a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); 179a4ce40a9SAlex Elder 180a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, 181406e2c9fSAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 182a4ce40a9SAlex Elder { 183a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 184a4ce40a9SAlex Elder 185863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 186a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 187a4ce40a9SAlex Elder } 188a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); 189a4ce40a9SAlex Elder 190a4ce40a9SAlex Elder #ifdef CONFIG_BLOCK 191a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, 192406e2c9fSAlex Elder unsigned int which, struct bio *bio, size_t bio_length) 193a4ce40a9SAlex Elder { 194a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 195863c7eb5SAlex Elder 196863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 197a4ce40a9SAlex Elder ceph_osd_data_bio_init(osd_data, bio, bio_length); 198a4ce40a9SAlex Elder } 199a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); 200a4ce40a9SAlex Elder #endif /* CONFIG_BLOCK */ 201a4ce40a9SAlex Elder 202a4ce40a9SAlex Elder static void osd_req_op_cls_request_info_pagelist( 203a4ce40a9SAlex Elder struct ceph_osd_request *osd_req, 204a4ce40a9SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 205a4ce40a9SAlex Elder { 206a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 207a4ce40a9SAlex Elder 208863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_info); 209a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 210a4ce40a9SAlex Elder } 211a4ce40a9SAlex Elder 21204017e29SAlex Elder void osd_req_op_cls_request_data_pagelist( 21304017e29SAlex Elder struct ceph_osd_request *osd_req, 21404017e29SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 21504017e29SAlex Elder { 21604017e29SAlex Elder struct ceph_osd_data *osd_data; 21704017e29SAlex Elder 218863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 21904017e29SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 22004017e29SAlex Elder } 22104017e29SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); 22204017e29SAlex Elder 2236c57b554SAlex Elder void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, 2246c57b554SAlex Elder unsigned int which, struct page **pages, u64 length, 2256c57b554SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 2266c57b554SAlex Elder { 2276c57b554SAlex Elder struct ceph_osd_data *osd_data; 2286c57b554SAlex Elder 2296c57b554SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 2306c57b554SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 2316c57b554SAlex Elder pages_from_pool, own_pages); 2326c57b554SAlex Elder } 2336c57b554SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); 2346c57b554SAlex Elder 235a4ce40a9SAlex Elder void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, 236a4ce40a9SAlex Elder unsigned int which, struct page **pages, u64 length, 237a4ce40a9SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 238a4ce40a9SAlex Elder { 239a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 240a4ce40a9SAlex Elder 241863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, response_data); 242a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 243a4ce40a9SAlex Elder pages_from_pool, own_pages); 244a4ce40a9SAlex Elder } 245a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); 246a4ce40a9SAlex Elder 24723c08a9cSAlex Elder static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) 24823c08a9cSAlex Elder { 24923c08a9cSAlex Elder switch (osd_data->type) { 25023c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_NONE: 25123c08a9cSAlex Elder return 0; 25223c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGES: 25323c08a9cSAlex Elder return osd_data->length; 25423c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGELIST: 25523c08a9cSAlex Elder return (u64)osd_data->pagelist->length; 25623c08a9cSAlex Elder #ifdef CONFIG_BLOCK 25723c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_BIO: 25823c08a9cSAlex Elder return (u64)osd_data->bio_length; 25923c08a9cSAlex Elder #endif /* CONFIG_BLOCK */ 26023c08a9cSAlex Elder default: 26123c08a9cSAlex Elder WARN(true, "unrecognized data type %d\n", (int)osd_data->type); 26223c08a9cSAlex Elder return 0; 26323c08a9cSAlex Elder } 26423c08a9cSAlex Elder } 26523c08a9cSAlex Elder 266c54d47bfSAlex Elder static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 267c54d47bfSAlex Elder { 2685476492fSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { 269c54d47bfSAlex Elder int num_pages; 270c54d47bfSAlex Elder 271c54d47bfSAlex Elder num_pages = calc_pages_for((u64)osd_data->alignment, 272c54d47bfSAlex Elder (u64)osd_data->length); 273c54d47bfSAlex Elder ceph_release_page_vector(osd_data->pages, num_pages); 274c54d47bfSAlex Elder } 2755476492fSAlex Elder ceph_osd_data_init(osd_data); 2765476492fSAlex Elder } 2775476492fSAlex Elder 2785476492fSAlex Elder static void osd_req_op_data_release(struct ceph_osd_request *osd_req, 2795476492fSAlex Elder unsigned int which) 2805476492fSAlex Elder { 2815476492fSAlex Elder struct ceph_osd_req_op *op; 2825476492fSAlex Elder 2835476492fSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 2845476492fSAlex Elder op = &osd_req->r_ops[which]; 2855476492fSAlex Elder 2865476492fSAlex Elder switch (op->op) { 2875476492fSAlex Elder case CEPH_OSD_OP_READ: 2885476492fSAlex Elder case CEPH_OSD_OP_WRITE: 289e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 2905476492fSAlex Elder ceph_osd_data_release(&op->extent.osd_data); 2915476492fSAlex Elder break; 2925476492fSAlex Elder case CEPH_OSD_OP_CALL: 2935476492fSAlex Elder ceph_osd_data_release(&op->cls.request_info); 29404017e29SAlex Elder ceph_osd_data_release(&op->cls.request_data); 2955476492fSAlex Elder ceph_osd_data_release(&op->cls.response_data); 2965476492fSAlex Elder break; 297d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 298d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 299d74b50beSYan, Zheng ceph_osd_data_release(&op->xattr.osd_data); 300d74b50beSYan, Zheng break; 30166ba609fSYan, Zheng case CEPH_OSD_OP_STAT: 30266ba609fSYan, Zheng ceph_osd_data_release(&op->raw_data_in); 30366ba609fSYan, Zheng break; 3045476492fSAlex Elder default: 3055476492fSAlex Elder break; 3065476492fSAlex Elder } 307c54d47bfSAlex Elder } 308c54d47bfSAlex Elder 3093d14c5d2SYehuda Sadeh /* 3103d14c5d2SYehuda Sadeh * requests 3113d14c5d2SYehuda Sadeh */ 3129e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 3133d14c5d2SYehuda Sadeh { 3149e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 3159e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 3165476492fSAlex Elder unsigned int which; 3173d14c5d2SYehuda Sadeh 3189e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 3199e94af20SIlya Dryomov req->r_request, req->r_reply); 3206562d661SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 3216562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_req_lru_item)); 3226562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_osd_item)); 3236562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_linger_item)); 3246562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_linger_osd_item)); 3256562d661SIlya Dryomov WARN_ON(req->r_osd); 3269e94af20SIlya Dryomov 3273d14c5d2SYehuda Sadeh if (req->r_request) 3283d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 329ace6d3a9SAlex Elder if (req->r_reply) { 3308921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 331ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 332ace6d3a9SAlex Elder } 3330fff87ecSAlex Elder 3345476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 3355476492fSAlex Elder osd_req_op_data_release(req, which); 3360fff87ecSAlex Elder 337d30291b9SIlya Dryomov ceph_oid_destroy(&req->r_base_oid); 338d30291b9SIlya Dryomov ceph_oid_destroy(&req->r_target_oid); 3393d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 340d30291b9SIlya Dryomov 3413d14c5d2SYehuda Sadeh if (req->r_mempool) 3423d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 3433f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 3445522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 3453f1af42aSIlya Dryomov else 3463f1af42aSIlya Dryomov kfree(req); 3473d14c5d2SYehuda Sadeh } 3489e94af20SIlya Dryomov 3499e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 3509e94af20SIlya Dryomov { 3519e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3529e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3539e94af20SIlya Dryomov kref_get(&req->r_kref); 3549e94af20SIlya Dryomov } 3559e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 3569e94af20SIlya Dryomov 3579e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 3589e94af20SIlya Dryomov { 3593ed97d63SIlya Dryomov if (req) { 3609e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3619e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3629e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 3639e94af20SIlya Dryomov } 3643ed97d63SIlya Dryomov } 3659e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 3663d14c5d2SYehuda Sadeh 3673d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 3683d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 3691b83bef2SSage Weil unsigned int num_ops, 3703d14c5d2SYehuda Sadeh bool use_mempool, 37154a54007SAlex Elder gfp_t gfp_flags) 3723d14c5d2SYehuda Sadeh { 3733d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 3743d14c5d2SYehuda Sadeh 3753d14c5d2SYehuda Sadeh if (use_mempool) { 3763f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 3773d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 3783f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 3793f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 3803d14c5d2SYehuda Sadeh } else { 3813f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 3823f1af42aSIlya Dryomov req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), 3833f1af42aSIlya Dryomov gfp_flags); 3843d14c5d2SYehuda Sadeh } 3853f1af42aSIlya Dryomov if (unlikely(!req)) 3863d14c5d2SYehuda Sadeh return NULL; 3873d14c5d2SYehuda Sadeh 3883f1af42aSIlya Dryomov /* req only, each op is zeroed in _osd_req_op_init() */ 3893f1af42aSIlya Dryomov memset(req, 0, sizeof(*req)); 3903f1af42aSIlya Dryomov 3913d14c5d2SYehuda Sadeh req->r_osdc = osdc; 3923d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 39379528734SAlex Elder req->r_num_ops = num_ops; 39484127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 39584127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 3963d14c5d2SYehuda Sadeh 3973d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 3983d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 3993d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 400a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 4013d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 402a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 4031d0326b1SIlya Dryomov INIT_LIST_HEAD(&req->r_linger_osd_item); 404935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 405cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 406cd43045cSSage Weil 407d30291b9SIlya Dryomov ceph_oid_init(&req->r_base_oid); 4083c972c95SIlya Dryomov req->r_base_oloc.pool = -1; 409d30291b9SIlya Dryomov ceph_oid_init(&req->r_target_oid); 410205ee118SIlya Dryomov req->r_target_oloc.pool = -1; 41122116525SIlya Dryomov 41213d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 41313d1ad16SIlya Dryomov return req; 4143f1af42aSIlya Dryomov } 41513d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 4163f1af42aSIlya Dryomov 41713d1ad16SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 41813d1ad16SIlya Dryomov { 41913d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 42013d1ad16SIlya Dryomov struct ceph_msg *msg; 42113d1ad16SIlya Dryomov int msg_size; 4223d14c5d2SYehuda Sadeh 423d30291b9SIlya Dryomov WARN_ON(ceph_oid_empty(&req->r_base_oid)); 424d30291b9SIlya Dryomov 42513d1ad16SIlya Dryomov /* create request message */ 426ae458f5aSIlya Dryomov msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */ 427ae458f5aSIlya Dryomov msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */ 428ae458f5aSIlya Dryomov msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 429ae458f5aSIlya Dryomov msg_size += 1 + 8 + 4 + 4; /* pgid */ 43013d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 43113d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 432ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 433ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 43413d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 435ae458f5aSIlya Dryomov msg_size += 4; /* retry_attempt */ 436ae458f5aSIlya Dryomov 43713d1ad16SIlya Dryomov if (req->r_mempool) 4383d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 4393d14c5d2SYehuda Sadeh else 44013d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); 44113d1ad16SIlya Dryomov if (!msg) 44213d1ad16SIlya Dryomov return -ENOMEM; 4433d14c5d2SYehuda Sadeh 4443d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 4453d14c5d2SYehuda Sadeh req->r_request = msg; 4463d14c5d2SYehuda Sadeh 44713d1ad16SIlya Dryomov /* create reply message */ 44813d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 449711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 450711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 45113d1ad16SIlya Dryomov 45213d1ad16SIlya Dryomov if (req->r_mempool) 45313d1ad16SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 45413d1ad16SIlya Dryomov else 45513d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); 45613d1ad16SIlya Dryomov if (!msg) 45713d1ad16SIlya Dryomov return -ENOMEM; 45813d1ad16SIlya Dryomov 45913d1ad16SIlya Dryomov req->r_reply = msg; 46013d1ad16SIlya Dryomov 46113d1ad16SIlya Dryomov return 0; 46213d1ad16SIlya Dryomov } 46313d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 4643d14c5d2SYehuda Sadeh 465a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 466a8dd0a37SAlex Elder { 467a8dd0a37SAlex Elder switch (opcode) { 46870b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 46970b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 47070b5bfa3SIlya Dryomov #undef GENERATE_CASE 471a8dd0a37SAlex Elder default: 472a8dd0a37SAlex Elder return false; 473a8dd0a37SAlex Elder } 474a8dd0a37SAlex Elder } 475a8dd0a37SAlex Elder 47633803f33SAlex Elder /* 47733803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 47833803f33SAlex Elder * other information associated with them. It also serves as a 47933803f33SAlex Elder * common init routine for all the other init functions, below. 48033803f33SAlex Elder */ 481c99d2d4aSAlex Elder static struct ceph_osd_req_op * 48249719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 483144cba14SYan, Zheng u16 opcode, u32 flags) 48433803f33SAlex Elder { 485c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 486c99d2d4aSAlex Elder 487c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 48833803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 48933803f33SAlex Elder 490c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 49133803f33SAlex Elder memset(op, 0, sizeof (*op)); 49233803f33SAlex Elder op->op = opcode; 493144cba14SYan, Zheng op->flags = flags; 494c99d2d4aSAlex Elder 495c99d2d4aSAlex Elder return op; 49633803f33SAlex Elder } 49733803f33SAlex Elder 49849719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 499144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 50049719778SAlex Elder { 501144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 50249719778SAlex Elder } 50349719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 50449719778SAlex Elder 505c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 506c99d2d4aSAlex Elder unsigned int which, u16 opcode, 50733803f33SAlex Elder u64 offset, u64 length, 50833803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 50933803f33SAlex Elder { 510144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 511144cba14SYan, Zheng opcode, 0); 51233803f33SAlex Elder size_t payload_len = 0; 51333803f33SAlex Elder 514ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 515e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 516e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 51733803f33SAlex Elder 51833803f33SAlex Elder op->extent.offset = offset; 51933803f33SAlex Elder op->extent.length = length; 52033803f33SAlex Elder op->extent.truncate_size = truncate_size; 52133803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 522e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 52333803f33SAlex Elder payload_len += length; 52433803f33SAlex Elder 525de2aa102SIlya Dryomov op->indata_len = payload_len; 52633803f33SAlex Elder } 52733803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 52833803f33SAlex Elder 529c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 530c99d2d4aSAlex Elder unsigned int which, u64 length) 531e5975c7cSAlex Elder { 532c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 533c99d2d4aSAlex Elder u64 previous; 534c99d2d4aSAlex Elder 535c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 536c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 537c99d2d4aSAlex Elder previous = op->extent.length; 538e5975c7cSAlex Elder 539e5975c7cSAlex Elder if (length == previous) 540e5975c7cSAlex Elder return; /* Nothing to do */ 541e5975c7cSAlex Elder BUG_ON(length > previous); 542e5975c7cSAlex Elder 543e5975c7cSAlex Elder op->extent.length = length; 544de2aa102SIlya Dryomov op->indata_len -= previous - length; 545e5975c7cSAlex Elder } 546e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 547e5975c7cSAlex Elder 5482c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 5492c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 5502c63f49aSYan, Zheng { 5512c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 5522c63f49aSYan, Zheng 5532c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 5542c63f49aSYan, Zheng 5552c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 5562c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 5572c63f49aSYan, Zheng /* dup previous one */ 5582c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 5592c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 5602c63f49aSYan, Zheng op->extent = prev_op->extent; 5612c63f49aSYan, Zheng /* adjust offset */ 5622c63f49aSYan, Zheng op->extent.offset += offset_inc; 5632c63f49aSYan, Zheng op->extent.length -= offset_inc; 5642c63f49aSYan, Zheng 5652c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 5662c63f49aSYan, Zheng op->indata_len -= offset_inc; 5672c63f49aSYan, Zheng } 5682c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 5692c63f49aSYan, Zheng 570c99d2d4aSAlex Elder void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 57104017e29SAlex Elder u16 opcode, const char *class, const char *method) 57233803f33SAlex Elder { 573144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 574144cba14SYan, Zheng opcode, 0); 5755f562df5SAlex Elder struct ceph_pagelist *pagelist; 57633803f33SAlex Elder size_t payload_len = 0; 57733803f33SAlex Elder size_t size; 57833803f33SAlex Elder 57933803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 58033803f33SAlex Elder 5815f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 5825f562df5SAlex Elder BUG_ON(!pagelist); 5835f562df5SAlex Elder ceph_pagelist_init(pagelist); 5845f562df5SAlex Elder 58533803f33SAlex Elder op->cls.class_name = class; 58633803f33SAlex Elder size = strlen(class); 58733803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 58833803f33SAlex Elder op->cls.class_len = size; 5895f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 59033803f33SAlex Elder payload_len += size; 59133803f33SAlex Elder 59233803f33SAlex Elder op->cls.method_name = method; 59333803f33SAlex Elder size = strlen(method); 59433803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 59533803f33SAlex Elder op->cls.method_len = size; 5965f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 59733803f33SAlex Elder payload_len += size; 59833803f33SAlex Elder 599a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 6005f562df5SAlex Elder 60133803f33SAlex Elder op->cls.argc = 0; /* currently unused */ 60233803f33SAlex Elder 603de2aa102SIlya Dryomov op->indata_len = payload_len; 60433803f33SAlex Elder } 60533803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 6068c042b0dSAlex Elder 607d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 608d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 609d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 610d74b50beSYan, Zheng { 611144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 612144cba14SYan, Zheng opcode, 0); 613d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 614d74b50beSYan, Zheng size_t payload_len; 615d74b50beSYan, Zheng 616d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 617d74b50beSYan, Zheng 618d74b50beSYan, Zheng pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); 619d74b50beSYan, Zheng if (!pagelist) 620d74b50beSYan, Zheng return -ENOMEM; 621d74b50beSYan, Zheng 622d74b50beSYan, Zheng ceph_pagelist_init(pagelist); 623d74b50beSYan, Zheng 624d74b50beSYan, Zheng payload_len = strlen(name); 625d74b50beSYan, Zheng op->xattr.name_len = payload_len; 626d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 627d74b50beSYan, Zheng 628d74b50beSYan, Zheng op->xattr.value_len = size; 629d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 630d74b50beSYan, Zheng payload_len += size; 631d74b50beSYan, Zheng 632d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 633d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 634d74b50beSYan, Zheng 635d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 636de2aa102SIlya Dryomov op->indata_len = payload_len; 637d74b50beSYan, Zheng return 0; 638d74b50beSYan, Zheng } 639d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 640d74b50beSYan, Zheng 641c99d2d4aSAlex Elder void osd_req_op_watch_init(struct ceph_osd_request *osd_req, 642c99d2d4aSAlex Elder unsigned int which, u16 opcode, 64333803f33SAlex Elder u64 cookie, u64 version, int flag) 64433803f33SAlex Elder { 645144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 646144cba14SYan, Zheng opcode, 0); 64733803f33SAlex Elder 648c99d2d4aSAlex Elder BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 64933803f33SAlex Elder 65033803f33SAlex Elder op->watch.cookie = cookie; 6519ef1ee5aSAlex Elder op->watch.ver = version; 65233803f33SAlex Elder if (opcode == CEPH_OSD_OP_WATCH && flag) 65333803f33SAlex Elder op->watch.flag = (u8)1; 65433803f33SAlex Elder } 65533803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_watch_init); 65633803f33SAlex Elder 657c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 658c647b8a8SIlya Dryomov unsigned int which, 659c647b8a8SIlya Dryomov u64 expected_object_size, 660c647b8a8SIlya Dryomov u64 expected_write_size) 661c647b8a8SIlya Dryomov { 662c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 663144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 664144cba14SYan, Zheng 0); 665c647b8a8SIlya Dryomov 666c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 667c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 668c647b8a8SIlya Dryomov 669c647b8a8SIlya Dryomov /* 670c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 671c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 672c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 673c647b8a8SIlya Dryomov */ 674c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 675c647b8a8SIlya Dryomov } 676c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 677c647b8a8SIlya Dryomov 67890af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 679ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 680ec9123c5SAlex Elder { 681ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 682ec9123c5SAlex Elder 683ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 684ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 685ec9123c5SAlex Elder if (length) 68690af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 687ec9123c5SAlex Elder length, osd_data->alignment); 688ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 689ec9123c5SAlex Elder BUG_ON(!length); 69090af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 691ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 692ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 69390af3602SAlex Elder ceph_msg_data_add_bio(msg, osd_data->bio, length); 694ec9123c5SAlex Elder #endif 695ec9123c5SAlex Elder } else { 696ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 697ec9123c5SAlex Elder } 698ec9123c5SAlex Elder } 699ec9123c5SAlex Elder 700175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 70179528734SAlex Elder struct ceph_osd_op *dst, unsigned int which) 7023d14c5d2SYehuda Sadeh { 70379528734SAlex Elder struct ceph_osd_req_op *src; 70404017e29SAlex Elder struct ceph_osd_data *osd_data; 70554d50649SAlex Elder u64 request_data_len = 0; 70604017e29SAlex Elder u64 data_length; 707175face2SAlex Elder 70879528734SAlex Elder BUG_ON(which >= req->r_num_ops); 70979528734SAlex Elder src = &req->r_ops[which]; 710a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 711a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 712a8dd0a37SAlex Elder 713a8dd0a37SAlex Elder return 0; 714a8dd0a37SAlex Elder } 7153d14c5d2SYehuda Sadeh 716065a68f9SAlex Elder switch (src->op) { 717fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 71849719778SAlex Elder osd_data = &src->raw_data_in; 71949719778SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 720fbfab539SAlex Elder break; 7213d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 7223d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 723e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 724ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 725ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 726e30b7577SIlya Dryomov if (src->op == CEPH_OSD_OP_WRITE || 727e30b7577SIlya Dryomov src->op == CEPH_OSD_OP_WRITEFULL) 72854d50649SAlex Elder request_data_len = src->extent.length; 729175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 730175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 7313d14c5d2SYehuda Sadeh dst->extent.truncate_size = 7323d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 7333d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 7343d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 73504017e29SAlex Elder osd_data = &src->extent.osd_data; 736e30b7577SIlya Dryomov if (src->op == CEPH_OSD_OP_WRITE || 737e30b7577SIlya Dryomov src->op == CEPH_OSD_OP_WRITEFULL) 73804017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 7395476492fSAlex Elder else 74004017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 7413d14c5d2SYehuda Sadeh break; 7423d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 7433d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 7443d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 74504017e29SAlex Elder osd_data = &src->cls.request_info; 74604017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 74704017e29SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); 74804017e29SAlex Elder request_data_len = osd_data->pagelist->length; 74904017e29SAlex Elder 75004017e29SAlex Elder osd_data = &src->cls.request_data; 75104017e29SAlex Elder data_length = ceph_osd_data_length(osd_data); 75204017e29SAlex Elder if (data_length) { 75304017e29SAlex Elder BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); 75404017e29SAlex Elder dst->cls.indata_len = cpu_to_le32(data_length); 75504017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 756de2aa102SIlya Dryomov src->indata_len += data_length; 75704017e29SAlex Elder request_data_len += data_length; 75804017e29SAlex Elder } 75904017e29SAlex Elder osd_data = &src->cls.response_data; 76004017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 7613d14c5d2SYehuda Sadeh break; 7623d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 7633d14c5d2SYehuda Sadeh break; 764a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 765a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 766a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 767a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 768a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 769a40c4f10SYehuda Sadeh break; 770c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 771c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 772c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 773c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 774c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 775c647b8a8SIlya Dryomov break; 776d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 777d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 778d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 779d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 780d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 781d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 782d74b50beSYan, Zheng osd_data = &src->xattr.osd_data; 783d74b50beSYan, Zheng ceph_osdc_msg_data_add(req->r_request, osd_data); 784d74b50beSYan, Zheng request_data_len = osd_data->pagelist->length; 785d74b50beSYan, Zheng break; 786864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 787864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 788864e9197SYan, Zheng break; 7893d14c5d2SYehuda Sadeh default: 7904c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 7918f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 7924c46459cSAlex Elder WARN_ON(1); 793a8dd0a37SAlex Elder 794a8dd0a37SAlex Elder return 0; 7953d14c5d2SYehuda Sadeh } 7967b25bf5fSIlya Dryomov 797a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 7987b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 799de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 800175face2SAlex Elder 80154d50649SAlex Elder return request_data_len; 8023d14c5d2SYehuda Sadeh } 8033d14c5d2SYehuda Sadeh 8043d14c5d2SYehuda Sadeh /* 8053d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 8063d14c5d2SYehuda Sadeh * extent as needed. 8073d14c5d2SYehuda Sadeh * 8083d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 8093d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 8103d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 8113d14c5d2SYehuda Sadeh * 8123d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 8133d14c5d2SYehuda Sadeh * data quickly. 8143d14c5d2SYehuda Sadeh */ 8153d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 8163d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 8173d14c5d2SYehuda Sadeh struct ceph_vino vino, 818715e4cd4SYan, Zheng u64 off, u64 *plen, 819715e4cd4SYan, Zheng unsigned int which, int num_ops, 8203d14c5d2SYehuda Sadeh int opcode, int flags, 8213d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 8223d14c5d2SYehuda Sadeh u32 truncate_seq, 8233d14c5d2SYehuda Sadeh u64 truncate_size, 824153e5167SAlex Elder bool use_mempool) 8253d14c5d2SYehuda Sadeh { 8263d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 82775d1c941SAlex Elder u64 objnum = 0; 82875d1c941SAlex Elder u64 objoff = 0; 82975d1c941SAlex Elder u64 objlen = 0; 8306816282dSSage Weil int r; 8313d14c5d2SYehuda Sadeh 832ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 833864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 834864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 8353d14c5d2SYehuda Sadeh 836acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 837ae7ca4a3SAlex Elder GFP_NOFS); 83813d1ad16SIlya Dryomov if (!req) { 83913d1ad16SIlya Dryomov r = -ENOMEM; 84013d1ad16SIlya Dryomov goto fail; 84113d1ad16SIlya Dryomov } 84279528734SAlex Elder 843d178a9e7SAlex Elder req->r_flags = flags; 8443d14c5d2SYehuda Sadeh 8453d14c5d2SYehuda Sadeh /* calculate max write size */ 846a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 84713d1ad16SIlya Dryomov if (r) 84813d1ad16SIlya Dryomov goto fail; 849a19dadfbSAlex Elder 850864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 851144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 852864e9197SYan, Zheng } else { 853864e9197SYan, Zheng u32 object_size = le32_to_cpu(layout->fl_object_size); 854864e9197SYan, Zheng u32 object_base = off - objoff; 855ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 856d18d1e28SAlex Elder if (truncate_size <= object_base) { 857d18d1e28SAlex Elder truncate_size = 0; 858d18d1e28SAlex Elder } else { 859d18d1e28SAlex Elder truncate_size -= object_base; 860d18d1e28SAlex Elder if (truncate_size > object_size) 861d18d1e28SAlex Elder truncate_size = object_size; 862d18d1e28SAlex Elder } 863ccca4e37SYan, Zheng } 864715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 865b0270324SAlex Elder truncate_size, truncate_seq); 866864e9197SYan, Zheng } 867d18d1e28SAlex Elder 8683c972c95SIlya Dryomov req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); 869d30291b9SIlya Dryomov ceph_oid_printf(&req->r_base_oid, "%llx.%08llx", vino.ino, objnum); 870dbe0fc41SAlex Elder 87113d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 87213d1ad16SIlya Dryomov if (r) 87313d1ad16SIlya Dryomov goto fail; 87413d1ad16SIlya Dryomov 8753d14c5d2SYehuda Sadeh return req; 87613d1ad16SIlya Dryomov 87713d1ad16SIlya Dryomov fail: 87813d1ad16SIlya Dryomov ceph_osdc_put_request(req); 87913d1ad16SIlya Dryomov return ERR_PTR(r); 8803d14c5d2SYehuda Sadeh } 8813d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 8823d14c5d2SYehuda Sadeh 8833d14c5d2SYehuda Sadeh /* 8843d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 8853d14c5d2SYehuda Sadeh */ 8863d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 8873d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 8883d14c5d2SYehuda Sadeh { 8893d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 8903d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 8913d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 8923d14c5d2SYehuda Sadeh 8933d14c5d2SYehuda Sadeh while (*p) { 8943d14c5d2SYehuda Sadeh parent = *p; 8953d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 8963d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 8973d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 8983d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 8993d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 9003d14c5d2SYehuda Sadeh else 9013d14c5d2SYehuda Sadeh BUG(); 9023d14c5d2SYehuda Sadeh } 9033d14c5d2SYehuda Sadeh 9043d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 9053d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 9063d14c5d2SYehuda Sadeh } 9073d14c5d2SYehuda Sadeh 9083d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 9093d14c5d2SYehuda Sadeh u64 tid) 9103d14c5d2SYehuda Sadeh { 9113d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 9123d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 9133d14c5d2SYehuda Sadeh 9143d14c5d2SYehuda Sadeh while (n) { 9153d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 9163d14c5d2SYehuda Sadeh if (tid < req->r_tid) 9173d14c5d2SYehuda Sadeh n = n->rb_left; 9183d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 9193d14c5d2SYehuda Sadeh n = n->rb_right; 9203d14c5d2SYehuda Sadeh else 9213d14c5d2SYehuda Sadeh return req; 9223d14c5d2SYehuda Sadeh } 9233d14c5d2SYehuda Sadeh return NULL; 9243d14c5d2SYehuda Sadeh } 9253d14c5d2SYehuda Sadeh 9263d14c5d2SYehuda Sadeh static struct ceph_osd_request * 9273d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 9283d14c5d2SYehuda Sadeh u64 tid) 9293d14c5d2SYehuda Sadeh { 9303d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 9313d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 9323d14c5d2SYehuda Sadeh 9333d14c5d2SYehuda Sadeh while (n) { 9343d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 9353d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 9363d14c5d2SYehuda Sadeh if (!n->rb_left) 9373d14c5d2SYehuda Sadeh return req; 9383d14c5d2SYehuda Sadeh n = n->rb_left; 9393d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 9403d14c5d2SYehuda Sadeh n = n->rb_right; 9413d14c5d2SYehuda Sadeh } else { 9423d14c5d2SYehuda Sadeh return req; 9433d14c5d2SYehuda Sadeh } 9443d14c5d2SYehuda Sadeh } 9453d14c5d2SYehuda Sadeh return NULL; 9463d14c5d2SYehuda Sadeh } 9473d14c5d2SYehuda Sadeh 9482cc6128aSIlya Dryomov static void __kick_linger_request(struct ceph_osd_request *req) 9492cc6128aSIlya Dryomov { 9502cc6128aSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 9512cc6128aSIlya Dryomov struct ceph_osd *osd = req->r_osd; 9522cc6128aSIlya Dryomov 9532cc6128aSIlya Dryomov /* 9542cc6128aSIlya Dryomov * Linger requests need to be resent with a new tid to avoid 9552cc6128aSIlya Dryomov * the dup op detection logic on the OSDs. Achieve this with 9562cc6128aSIlya Dryomov * a re-register dance instead of open-coding. 9572cc6128aSIlya Dryomov */ 9582cc6128aSIlya Dryomov ceph_osdc_get_request(req); 9592cc6128aSIlya Dryomov if (!list_empty(&req->r_linger_item)) 9602cc6128aSIlya Dryomov __unregister_linger_request(osdc, req); 9612cc6128aSIlya Dryomov else 9622cc6128aSIlya Dryomov __unregister_request(osdc, req); 9632cc6128aSIlya Dryomov __register_request(osdc, req); 9642cc6128aSIlya Dryomov ceph_osdc_put_request(req); 9652cc6128aSIlya Dryomov 9662cc6128aSIlya Dryomov /* 9672cc6128aSIlya Dryomov * Unless request has been registered as both normal and 9682cc6128aSIlya Dryomov * lingering, __unregister{,_linger}_request clears r_osd. 9692cc6128aSIlya Dryomov * However, here we need to preserve r_osd to make sure we 9702cc6128aSIlya Dryomov * requeue on the same OSD. 9712cc6128aSIlya Dryomov */ 9722cc6128aSIlya Dryomov WARN_ON(req->r_osd || !osd); 9732cc6128aSIlya Dryomov req->r_osd = osd; 9742cc6128aSIlya Dryomov 9752cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, req->r_tid); 9762cc6128aSIlya Dryomov __enqueue_request(req); 9772cc6128aSIlya Dryomov } 9782cc6128aSIlya Dryomov 9796f6c7006SSage Weil /* 9806f6c7006SSage Weil * Resubmit requests pending on the given osd. 9816f6c7006SSage Weil */ 9826f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 9836f6c7006SSage Weil struct ceph_osd *osd) 9846f6c7006SSage Weil { 985a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 986e02493c0SAlex Elder LIST_HEAD(resend); 9872cc6128aSIlya Dryomov LIST_HEAD(resend_linger); 9886f6c7006SSage Weil int err; 9896f6c7006SSage Weil 9902cc6128aSIlya Dryomov dout("%s osd%d\n", __func__, osd->o_osd); 9916f6c7006SSage Weil err = __reset_osd(osdc, osd); 992685a7555SAlex Elder if (err) 9936f6c7006SSage Weil return; 9942cc6128aSIlya Dryomov 995e02493c0SAlex Elder /* 996e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 997e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 998e02493c0SAlex Elder * sent in tid order, and that is also the order they're 999e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 1000e02493c0SAlex Elder * flight will be found first, followed by all requests that 1001e02493c0SAlex Elder * have not yet been sent. And to resend requests while 1002e02493c0SAlex Elder * preserving this order we will want to put any sent 1003e02493c0SAlex Elder * requests back on the front of the osd client's unsent 1004e02493c0SAlex Elder * list. 1005e02493c0SAlex Elder * 1006e02493c0SAlex Elder * So we build a separate ordered list of already-sent 1007e02493c0SAlex Elder * requests for the affected osd and splice it onto the 1008e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 1009e02493c0SAlex Elder * request that has not yet been sent we're done. Those 1010e02493c0SAlex Elder * requests are already sitting right where they belong. 1011e02493c0SAlex Elder */ 10126f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 1013e02493c0SAlex Elder if (!req->r_sent) 1014e02493c0SAlex Elder break; 10152cc6128aSIlya Dryomov 10162cc6128aSIlya Dryomov if (!req->r_linger) { 10172cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, 10182cc6128aSIlya Dryomov req->r_tid); 1019e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 10206f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 10212cc6128aSIlya Dryomov } else { 10222cc6128aSIlya Dryomov list_move_tail(&req->r_req_lru_item, &resend_linger); 10232cc6128aSIlya Dryomov } 10246f6c7006SSage Weil } 1025e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 1026a40c4f10SYehuda Sadeh 1027e02493c0SAlex Elder /* 10282cc6128aSIlya Dryomov * Both registered and not yet registered linger requests are 10292cc6128aSIlya Dryomov * enqueued with a new tid on the same OSD. We add/move them 10302cc6128aSIlya Dryomov * to req_unsent/o_requests at the end to keep things in tid 10312cc6128aSIlya Dryomov * order. 1032e02493c0SAlex Elder */ 1033a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 10341d0326b1SIlya Dryomov r_linger_osd_item) { 10352cc6128aSIlya Dryomov WARN_ON(!list_empty(&req->r_req_lru_item)); 10362cc6128aSIlya Dryomov __kick_linger_request(req); 1037a40c4f10SYehuda Sadeh } 10382cc6128aSIlya Dryomov 10392cc6128aSIlya Dryomov list_for_each_entry_safe(req, nreq, &resend_linger, r_req_lru_item) 10402cc6128aSIlya Dryomov __kick_linger_request(req); 10416f6c7006SSage Weil } 10426f6c7006SSage Weil 10433d14c5d2SYehuda Sadeh /* 10443d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 10453d14c5d2SYehuda Sadeh */ 10463d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 10473d14c5d2SYehuda Sadeh { 10483d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 10493d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 10503d14c5d2SYehuda Sadeh 10513d14c5d2SYehuda Sadeh if (!osd) 10523d14c5d2SYehuda Sadeh return; 10533d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 10543d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 10553d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 105683aff95eSSage Weil mutex_lock(&osdc->request_mutex); 105783aff95eSSage Weil __kick_osd_requests(osdc, osd); 1058f9d25199SAlex Elder __send_queued(osdc); 105983aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 10603d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 10613d14c5d2SYehuda Sadeh } 10623d14c5d2SYehuda Sadeh 10633d14c5d2SYehuda Sadeh /* 10643d14c5d2SYehuda Sadeh * Track open sessions with osds. 10653d14c5d2SYehuda Sadeh */ 1066e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 10673d14c5d2SYehuda Sadeh { 10683d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10693d14c5d2SYehuda Sadeh 10703d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 10713d14c5d2SYehuda Sadeh if (!osd) 10723d14c5d2SYehuda Sadeh return NULL; 10733d14c5d2SYehuda Sadeh 10743d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 10753d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1076e10006f8SAlex Elder osd->o_osd = onum; 1077f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 10783d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 1079a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 10803d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 10813d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 10823d14c5d2SYehuda Sadeh 1083b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 10843d14c5d2SYehuda Sadeh 10853d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 10863d14c5d2SYehuda Sadeh return osd; 10873d14c5d2SYehuda Sadeh } 10883d14c5d2SYehuda Sadeh 10893d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 10903d14c5d2SYehuda Sadeh { 10913d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 10923d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 10933d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 10943d14c5d2SYehuda Sadeh return osd; 10953d14c5d2SYehuda Sadeh } else { 10963d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 10973d14c5d2SYehuda Sadeh return NULL; 10983d14c5d2SYehuda Sadeh } 10993d14c5d2SYehuda Sadeh } 11003d14c5d2SYehuda Sadeh 11013d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 11023d14c5d2SYehuda Sadeh { 11033d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 11043d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 1105b28ec2f3SIlya Dryomov if (atomic_dec_and_test(&osd->o_ref)) { 1106b28ec2f3SIlya Dryomov if (osd->o_auth.authorizer) 11076c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 11083d14c5d2SYehuda Sadeh kfree(osd); 11093d14c5d2SYehuda Sadeh } 11103d14c5d2SYehuda Sadeh } 11113d14c5d2SYehuda Sadeh 11123d14c5d2SYehuda Sadeh /* 11133d14c5d2SYehuda Sadeh * remove an osd from our map 11143d14c5d2SYehuda Sadeh */ 11153d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 11163d14c5d2SYehuda Sadeh { 11177eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 1118cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_requests)); 1119cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_linger_requests)); 11207c6e6fc5SIlya Dryomov 11213d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 11227eb71e03SIlya Dryomov rb_erase(&osd->o_node, &osdc->osds); 11237eb71e03SIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 11247eb71e03SIlya Dryomov } 11257eb71e03SIlya Dryomov 11267eb71e03SIlya Dryomov static void remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 11277eb71e03SIlya Dryomov { 11287eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 11297eb71e03SIlya Dryomov 11307eb71e03SIlya Dryomov if (!RB_EMPTY_NODE(&osd->o_node)) { 11313d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 11327eb71e03SIlya Dryomov __remove_osd(osdc, osd); 11333d14c5d2SYehuda Sadeh put_osd(osd); 11343d14c5d2SYehuda Sadeh } 11357eb71e03SIlya Dryomov } 11363d14c5d2SYehuda Sadeh 1137aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 1138aca420bcSSage Weil { 1139048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 1140aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 1141aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 1142aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 1143aca420bcSSage Weil struct ceph_osd, o_node); 11447eb71e03SIlya Dryomov remove_osd(osdc, osd); 1145aca420bcSSage Weil } 1146aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 1147aca420bcSSage Weil } 1148aca420bcSSage Weil 11493d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 11503d14c5d2SYehuda Sadeh struct ceph_osd *osd) 11513d14c5d2SYehuda Sadeh { 1152bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 11533d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1154bbf37ec3SIlya Dryomov 11553d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 1156a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 11573d14c5d2SYehuda Sadeh } 11583d14c5d2SYehuda Sadeh 1159bbf37ec3SIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd_client *osdc, 1160bbf37ec3SIlya Dryomov struct ceph_osd *osd) 1161bbf37ec3SIlya Dryomov { 1162bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 1163bbf37ec3SIlya Dryomov 1164bbf37ec3SIlya Dryomov if (list_empty(&osd->o_requests) && 1165bbf37ec3SIlya Dryomov list_empty(&osd->o_linger_requests)) 1166bbf37ec3SIlya Dryomov __move_osd_to_lru(osdc, osd); 1167bbf37ec3SIlya Dryomov } 1168bbf37ec3SIlya Dryomov 11693d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 11703d14c5d2SYehuda Sadeh { 11713d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 11723d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 11733d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 11743d14c5d2SYehuda Sadeh } 11753d14c5d2SYehuda Sadeh 1176aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 11773d14c5d2SYehuda Sadeh { 11783d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 11793d14c5d2SYehuda Sadeh 11803d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 11813d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 11823d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 1183aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 11843d14c5d2SYehuda Sadeh break; 11857eb71e03SIlya Dryomov remove_osd(osdc, osd); 11863d14c5d2SYehuda Sadeh } 11873d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 11883d14c5d2SYehuda Sadeh } 11893d14c5d2SYehuda Sadeh 11903d14c5d2SYehuda Sadeh /* 11913d14c5d2SYehuda Sadeh * reset osd connect 11923d14c5d2SYehuda Sadeh */ 11933d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 11943d14c5d2SYehuda Sadeh { 1195c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 11963d14c5d2SYehuda Sadeh 11973d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 1198a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 1199a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 12007eb71e03SIlya Dryomov remove_osd(osdc, osd); 1201c3acb181SAlex Elder return -ENODEV; 1202c3acb181SAlex Elder } 1203c3acb181SAlex Elder 1204c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 1205c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 12063d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 1207c3acb181SAlex Elder struct ceph_osd_request *req; 1208c3acb181SAlex Elder 12093d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 12100b4af2e8SIlya Dryomov "letting msgr retry\n"); 12113d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 12123d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 12133d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1214c3acb181SAlex Elder 1215c3acb181SAlex Elder return -EAGAIN; 12163d14c5d2SYehuda Sadeh } 1217c3acb181SAlex Elder 1218c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1219c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1220c3acb181SAlex Elder osd->o_incarnation++; 1221c3acb181SAlex Elder 1222c3acb181SAlex Elder return 0; 12233d14c5d2SYehuda Sadeh } 12243d14c5d2SYehuda Sadeh 12253d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 12263d14c5d2SYehuda Sadeh { 12273d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 12283d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 12293d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 12303d14c5d2SYehuda Sadeh 1231aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 12323d14c5d2SYehuda Sadeh while (*p) { 12333d14c5d2SYehuda Sadeh parent = *p; 12343d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 12353d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 12363d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 12373d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 12383d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 12393d14c5d2SYehuda Sadeh else 12403d14c5d2SYehuda Sadeh BUG(); 12413d14c5d2SYehuda Sadeh } 12423d14c5d2SYehuda Sadeh 12433d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 12443d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 12453d14c5d2SYehuda Sadeh } 12463d14c5d2SYehuda Sadeh 12473d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 12483d14c5d2SYehuda Sadeh { 12493d14c5d2SYehuda Sadeh struct ceph_osd *osd; 12503d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 12513d14c5d2SYehuda Sadeh 12523d14c5d2SYehuda Sadeh while (n) { 12533d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 12543d14c5d2SYehuda Sadeh if (o < osd->o_osd) 12553d14c5d2SYehuda Sadeh n = n->rb_left; 12563d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 12573d14c5d2SYehuda Sadeh n = n->rb_right; 12583d14c5d2SYehuda Sadeh else 12593d14c5d2SYehuda Sadeh return osd; 12603d14c5d2SYehuda Sadeh } 12613d14c5d2SYehuda Sadeh return NULL; 12623d14c5d2SYehuda Sadeh } 12633d14c5d2SYehuda Sadeh 12643d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 12653d14c5d2SYehuda Sadeh { 12663d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 1267a319bf56SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 12683d14c5d2SYehuda Sadeh } 12693d14c5d2SYehuda Sadeh 12703d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 12713d14c5d2SYehuda Sadeh { 12723d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 12733d14c5d2SYehuda Sadeh } 12743d14c5d2SYehuda Sadeh 12753d14c5d2SYehuda Sadeh /* 12763d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 12773d14c5d2SYehuda Sadeh * the timeout event. 12783d14c5d2SYehuda Sadeh */ 1279a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 12803d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 12813d14c5d2SYehuda Sadeh { 12823d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 12833d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 128477f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 12853d14c5d2SYehuda Sadeh __insert_request(osdc, req); 12863d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 12873d14c5d2SYehuda Sadeh osdc->num_requests++; 12883d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 12893d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 12903d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 12913d14c5d2SYehuda Sadeh } 1292a40c4f10SYehuda Sadeh } 1293a40c4f10SYehuda Sadeh 12943d14c5d2SYehuda Sadeh /* 12953d14c5d2SYehuda Sadeh * called under osdc->request_mutex 12963d14c5d2SYehuda Sadeh */ 12973d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 12983d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 12993d14c5d2SYehuda Sadeh { 130035f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 130135f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 130235f9f8a0SSage Weil req, req->r_tid); 130335f9f8a0SSage Weil return; 130435f9f8a0SSage Weil } 130535f9f8a0SSage Weil 13063d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 13073d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 13086562d661SIlya Dryomov RB_CLEAR_NODE(&req->r_node); 13093d14c5d2SYehuda Sadeh osdc->num_requests--; 13103d14c5d2SYehuda Sadeh 13113d14c5d2SYehuda Sadeh if (req->r_osd) { 13123d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 13136740a845SAlex Elder ceph_msg_revoke(req->r_request); 13143d14c5d2SYehuda Sadeh 13153d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1316bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 13174f23409eSIlya Dryomov if (list_empty(&req->r_linger_osd_item)) 13183d14c5d2SYehuda Sadeh req->r_osd = NULL; 13193d14c5d2SYehuda Sadeh } 13203d14c5d2SYehuda Sadeh 13217d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 13223d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 13233d14c5d2SYehuda Sadeh 13243d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 13253d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 13263d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 13273d14c5d2SYehuda Sadeh } 13283d14c5d2SYehuda Sadeh } 13293d14c5d2SYehuda Sadeh 13303d14c5d2SYehuda Sadeh /* 13313d14c5d2SYehuda Sadeh * Cancel a previously queued request message 13323d14c5d2SYehuda Sadeh */ 13333d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 13343d14c5d2SYehuda Sadeh { 13353d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 13366740a845SAlex Elder ceph_msg_revoke(req->r_request); 13373d14c5d2SYehuda Sadeh req->r_sent = 0; 13383d14c5d2SYehuda Sadeh } 13393d14c5d2SYehuda Sadeh } 13403d14c5d2SYehuda Sadeh 1341a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1342a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1343a40c4f10SYehuda Sadeh { 1344af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1345af593064SIlya Dryomov WARN_ON(!req->r_linger); 1346af593064SIlya Dryomov 134796e4dac6SAlex Elder ceph_osdc_get_request(req); 1348a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 13496194ea89SSage Weil if (req->r_osd) 13501d0326b1SIlya Dryomov list_add_tail(&req->r_linger_osd_item, 13516194ea89SSage Weil &req->r_osd->o_linger_requests); 1352a40c4f10SYehuda Sadeh } 1353a40c4f10SYehuda Sadeh 1354a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1355a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1356a40c4f10SYehuda Sadeh { 1357af593064SIlya Dryomov WARN_ON(!req->r_linger); 1358af593064SIlya Dryomov 1359af593064SIlya Dryomov if (list_empty(&req->r_linger_item)) { 1360af593064SIlya Dryomov dout("%s %p tid %llu not registered\n", __func__, req, 1361af593064SIlya Dryomov req->r_tid); 1362af593064SIlya Dryomov return; 1363af593064SIlya Dryomov } 1364af593064SIlya Dryomov 1365af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1366a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 1367af593064SIlya Dryomov 136861c74035SAlex Elder if (req->r_osd) { 13691d0326b1SIlya Dryomov list_del_init(&req->r_linger_osd_item); 1370bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 1371fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1372a40c4f10SYehuda Sadeh req->r_osd = NULL; 1373a40c4f10SYehuda Sadeh } 137496e4dac6SAlex Elder ceph_osdc_put_request(req); 1375a40c4f10SYehuda Sadeh } 1376a40c4f10SYehuda Sadeh 1377a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1378a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1379a40c4f10SYehuda Sadeh { 1380a40c4f10SYehuda Sadeh if (!req->r_linger) { 1381a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1382a40c4f10SYehuda Sadeh req->r_linger = 1; 1383a40c4f10SYehuda Sadeh } 1384a40c4f10SYehuda Sadeh } 1385a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1386a40c4f10SYehuda Sadeh 13873d14c5d2SYehuda Sadeh /* 1388d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1389d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1390d29adb34SJosh Durgin * 1391d29adb34SJosh Durgin * Caller should hold map_sem for read. 1392d29adb34SJosh Durgin */ 1393d29adb34SJosh Durgin static bool __req_should_be_paused(struct ceph_osd_client *osdc, 1394d29adb34SJosh Durgin struct ceph_osd_request *req) 1395d29adb34SJosh Durgin { 1396d29adb34SJosh Durgin bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 1397d29adb34SJosh Durgin bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 1398d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 1399d29adb34SJosh Durgin return (req->r_flags & CEPH_OSD_FLAG_READ && pauserd) || 1400d29adb34SJosh Durgin (req->r_flags & CEPH_OSD_FLAG_WRITE && pausewr); 1401d29adb34SJosh Durgin } 1402d29adb34SJosh Durgin 1403d29adb34SJosh Durgin /* 140417a13e40SIlya Dryomov * Calculate mapping of a request to a PG. Takes tiering into account. 140517a13e40SIlya Dryomov */ 140617a13e40SIlya Dryomov static int __calc_request_pg(struct ceph_osdmap *osdmap, 140717a13e40SIlya Dryomov struct ceph_osd_request *req, 140817a13e40SIlya Dryomov struct ceph_pg *pg_out) 140917a13e40SIlya Dryomov { 1410205ee118SIlya Dryomov bool need_check_tiering; 1411205ee118SIlya Dryomov 1412205ee118SIlya Dryomov need_check_tiering = false; 1413205ee118SIlya Dryomov if (req->r_target_oloc.pool == -1) { 1414205ee118SIlya Dryomov req->r_target_oloc = req->r_base_oloc; /* struct */ 1415205ee118SIlya Dryomov need_check_tiering = true; 1416205ee118SIlya Dryomov } 1417d30291b9SIlya Dryomov if (ceph_oid_empty(&req->r_target_oid)) { 1418205ee118SIlya Dryomov ceph_oid_copy(&req->r_target_oid, &req->r_base_oid); 1419205ee118SIlya Dryomov need_check_tiering = true; 1420205ee118SIlya Dryomov } 1421205ee118SIlya Dryomov 1422205ee118SIlya Dryomov if (need_check_tiering && 1423205ee118SIlya Dryomov (req->r_flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 142417a13e40SIlya Dryomov struct ceph_pg_pool_info *pi; 142517a13e40SIlya Dryomov 1426205ee118SIlya Dryomov pi = ceph_pg_pool_by_id(osdmap, req->r_target_oloc.pool); 142717a13e40SIlya Dryomov if (pi) { 142817a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_READ) && 142917a13e40SIlya Dryomov pi->read_tier >= 0) 1430205ee118SIlya Dryomov req->r_target_oloc.pool = pi->read_tier; 143117a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 143217a13e40SIlya Dryomov pi->write_tier >= 0) 1433205ee118SIlya Dryomov req->r_target_oloc.pool = pi->write_tier; 143417a13e40SIlya Dryomov } 143517a13e40SIlya Dryomov /* !pi is caught in ceph_oloc_oid_to_pg() */ 143617a13e40SIlya Dryomov } 143717a13e40SIlya Dryomov 1438205ee118SIlya Dryomov return ceph_oloc_oid_to_pg(osdmap, &req->r_target_oloc, 1439205ee118SIlya Dryomov &req->r_target_oid, pg_out); 144017a13e40SIlya Dryomov } 144117a13e40SIlya Dryomov 1442f671b581SIlya Dryomov static void __enqueue_request(struct ceph_osd_request *req) 1443f671b581SIlya Dryomov { 1444f671b581SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 1445f671b581SIlya Dryomov 1446f671b581SIlya Dryomov dout("%s %p tid %llu to osd%d\n", __func__, req, req->r_tid, 1447f671b581SIlya Dryomov req->r_osd ? req->r_osd->o_osd : -1); 1448f671b581SIlya Dryomov 1449f671b581SIlya Dryomov if (req->r_osd) { 1450f671b581SIlya Dryomov __remove_osd_from_lru(req->r_osd); 1451f671b581SIlya Dryomov list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1452f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 1453f671b581SIlya Dryomov } else { 1454f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 1455f671b581SIlya Dryomov } 1456f671b581SIlya Dryomov } 1457f671b581SIlya Dryomov 145817a13e40SIlya Dryomov /* 14593d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 14603d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 146125985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 14626f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 14633d14c5d2SYehuda Sadeh * 14643d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 14653d14c5d2SYehuda Sadeh * 14663d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 14673d14c5d2SYehuda Sadeh */ 14686f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 146938d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 14703d14c5d2SYehuda Sadeh { 14715b191d99SSage Weil struct ceph_pg pgid; 14723d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 14738008ab10SIlya Dryomov int num, o; 14743d14c5d2SYehuda Sadeh int err; 1475d29adb34SJosh Durgin bool was_paused; 14763d14c5d2SYehuda Sadeh 14776f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 147817a13e40SIlya Dryomov 147917a13e40SIlya Dryomov err = __calc_request_pg(osdc->osdmap, req, &pgid); 14806f6c7006SSage Weil if (err) { 14816f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 14823d14c5d2SYehuda Sadeh return err; 14836f6c7006SSage Weil } 14843d14c5d2SYehuda Sadeh req->r_pgid = pgid; 14853d14c5d2SYehuda Sadeh 14868008ab10SIlya Dryomov num = ceph_calc_pg_acting(osdc->osdmap, pgid, acting, &o); 14878008ab10SIlya Dryomov if (num < 0) 14888008ab10SIlya Dryomov num = 0; 14893d14c5d2SYehuda Sadeh 1490d29adb34SJosh Durgin was_paused = req->r_paused; 1491d29adb34SJosh Durgin req->r_paused = __req_should_be_paused(osdc, req); 1492d29adb34SJosh Durgin if (was_paused && !req->r_paused) 1493d29adb34SJosh Durgin force_resend = 1; 1494d29adb34SJosh Durgin 149538d6453cSSage Weil if ((!force_resend && 149638d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 14973d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 14983d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 14993d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 1500d29adb34SJosh Durgin (req->r_osd == NULL && o == -1) || 1501d29adb34SJosh Durgin req->r_paused) 15023d14c5d2SYehuda Sadeh return 0; /* no change */ 15033d14c5d2SYehuda Sadeh 15045b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 15055b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 15063d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 15073d14c5d2SYehuda Sadeh 15083d14c5d2SYehuda Sadeh /* record full pg acting set */ 15093d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 15103d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 15113d14c5d2SYehuda Sadeh 15123d14c5d2SYehuda Sadeh if (req->r_osd) { 15133d14c5d2SYehuda Sadeh __cancel_request(req); 15143d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1515a390de02SIlya Dryomov list_del_init(&req->r_linger_osd_item); 15163d14c5d2SYehuda Sadeh req->r_osd = NULL; 15173d14c5d2SYehuda Sadeh } 15183d14c5d2SYehuda Sadeh 15193d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 15203d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 15213d14c5d2SYehuda Sadeh err = -ENOMEM; 1522e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 15236f6c7006SSage Weil if (!req->r_osd) { 15246f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 15253d14c5d2SYehuda Sadeh goto out; 15266f6c7006SSage Weil } 15273d14c5d2SYehuda Sadeh 15286f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 15293d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 15303d14c5d2SYehuda Sadeh 1531b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1532b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1533b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 15343d14c5d2SYehuda Sadeh } 15353d14c5d2SYehuda Sadeh 1536f671b581SIlya Dryomov __enqueue_request(req); 15373d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 15383d14c5d2SYehuda Sadeh 15393d14c5d2SYehuda Sadeh out: 15403d14c5d2SYehuda Sadeh return err; 15413d14c5d2SYehuda Sadeh } 15423d14c5d2SYehuda Sadeh 15433d14c5d2SYehuda Sadeh /* 15443d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 15453d14c5d2SYehuda Sadeh */ 154656e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 15473d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 15483d14c5d2SYehuda Sadeh { 15491b83bef2SSage Weil void *p; 15503d14c5d2SYehuda Sadeh 15511b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 15521b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 15531b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 15543d14c5d2SYehuda Sadeh 15551b83bef2SSage Weil /* fill in message content that changes each time we send it */ 15561b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 15571b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 1558205ee118SIlya Dryomov put_unaligned_le64(req->r_target_oloc.pool, req->r_request_pool); 15591b83bef2SSage Weil p = req->r_request_pgid; 15601b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 15611b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 15621b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 15631b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 15641b83bef2SSage Weil sizeof(req->r_reassert_version)); 15652169aea6SSage Weil 15663d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 15673d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 15683d14c5d2SYehuda Sadeh 15693d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 157026be8808SAlex Elder 15713d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 157226be8808SAlex Elder 157326be8808SAlex Elder ceph_con_send(&req->r_osd->o_con, req->r_request); 15743d14c5d2SYehuda Sadeh } 15753d14c5d2SYehuda Sadeh 15763d14c5d2SYehuda Sadeh /* 15776f6c7006SSage Weil * Send any requests in the queue (req_unsent). 15786f6c7006SSage Weil */ 1579f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 15806f6c7006SSage Weil { 15816f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 15826f6c7006SSage Weil 1583f9d25199SAlex Elder dout("__send_queued\n"); 1584f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 15856f6c7006SSage Weil __send_request(osdc, req); 15866f6c7006SSage Weil } 15876f6c7006SSage Weil 15886f6c7006SSage Weil /* 15890bbfdfe8SIlya Dryomov * Caller should hold map_sem for read and request_mutex. 15900bbfdfe8SIlya Dryomov */ 15910bbfdfe8SIlya Dryomov static int __ceph_osdc_start_request(struct ceph_osd_client *osdc, 15920bbfdfe8SIlya Dryomov struct ceph_osd_request *req, 15930bbfdfe8SIlya Dryomov bool nofail) 15940bbfdfe8SIlya Dryomov { 15950bbfdfe8SIlya Dryomov int rc; 15960bbfdfe8SIlya Dryomov 15970bbfdfe8SIlya Dryomov __register_request(osdc, req); 15980bbfdfe8SIlya Dryomov req->r_sent = 0; 15990bbfdfe8SIlya Dryomov req->r_got_reply = 0; 16000bbfdfe8SIlya Dryomov rc = __map_request(osdc, req, 0); 16010bbfdfe8SIlya Dryomov if (rc < 0) { 16020bbfdfe8SIlya Dryomov if (nofail) { 16030bbfdfe8SIlya Dryomov dout("osdc_start_request failed map, " 16040bbfdfe8SIlya Dryomov " will retry %lld\n", req->r_tid); 16050bbfdfe8SIlya Dryomov rc = 0; 16060bbfdfe8SIlya Dryomov } else { 16070bbfdfe8SIlya Dryomov __unregister_request(osdc, req); 16080bbfdfe8SIlya Dryomov } 16090bbfdfe8SIlya Dryomov return rc; 16100bbfdfe8SIlya Dryomov } 16110bbfdfe8SIlya Dryomov 16120bbfdfe8SIlya Dryomov if (req->r_osd == NULL) { 16130bbfdfe8SIlya Dryomov dout("send_request %p no up osds in pg\n", req); 16140bbfdfe8SIlya Dryomov ceph_monc_request_next_osdmap(&osdc->client->monc); 16150bbfdfe8SIlya Dryomov } else { 16160bbfdfe8SIlya Dryomov __send_queued(osdc); 16170bbfdfe8SIlya Dryomov } 16180bbfdfe8SIlya Dryomov 16190bbfdfe8SIlya Dryomov return 0; 16200bbfdfe8SIlya Dryomov } 16210bbfdfe8SIlya Dryomov 16220bbfdfe8SIlya Dryomov /* 16233d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 16243d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 16253d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 16263d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 16273d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 16283d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 16293d14c5d2SYehuda Sadeh * there are no open requests). 16303d14c5d2SYehuda Sadeh */ 16313d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 16323d14c5d2SYehuda Sadeh { 16333d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 16343d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 1635a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 163683aff95eSSage Weil struct ceph_osd_request *req; 16373d14c5d2SYehuda Sadeh struct ceph_osd *osd; 16383d14c5d2SYehuda Sadeh struct list_head slow_osds; 16393d14c5d2SYehuda Sadeh dout("timeout\n"); 16403d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 16413d14c5d2SYehuda Sadeh 16423d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 16433d14c5d2SYehuda Sadeh 16443d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 16453d14c5d2SYehuda Sadeh 16463d14c5d2SYehuda Sadeh /* 16473d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 16483d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 16493d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 16503d14c5d2SYehuda Sadeh */ 16513d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 16523d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 1653a319bf56SIlya Dryomov if (time_before(jiffies, 1654a319bf56SIlya Dryomov req->r_stamp + opts->osd_keepalive_timeout)) 16553d14c5d2SYehuda Sadeh break; 16563d14c5d2SYehuda Sadeh 16573d14c5d2SYehuda Sadeh osd = req->r_osd; 16583d14c5d2SYehuda Sadeh BUG_ON(!osd); 16593d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 16603d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 16613d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 16623d14c5d2SYehuda Sadeh } 16633d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 16643d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 16653d14c5d2SYehuda Sadeh o_keepalive_item); 16663d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 16673d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 16683d14c5d2SYehuda Sadeh } 16693d14c5d2SYehuda Sadeh 16703d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1671f9d25199SAlex Elder __send_queued(osdc); 16723d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 16733d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16743d14c5d2SYehuda Sadeh } 16753d14c5d2SYehuda Sadeh 16763d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 16773d14c5d2SYehuda Sadeh { 16783d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 16793d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 16803d14c5d2SYehuda Sadeh osds_timeout_work.work); 1681a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 16823d14c5d2SYehuda Sadeh 16833d14c5d2SYehuda Sadeh dout("osds timeout\n"); 16843d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1685aca420bcSSage Weil remove_old_osds(osdc); 16863d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16873d14c5d2SYehuda Sadeh 16883d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 16893d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 16903d14c5d2SYehuda Sadeh } 16913d14c5d2SYehuda Sadeh 1692205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 1693205ee118SIlya Dryomov struct ceph_object_locator *oloc) 1694205ee118SIlya Dryomov { 1695205ee118SIlya Dryomov u8 struct_v, struct_cv; 1696205ee118SIlya Dryomov u32 len; 1697205ee118SIlya Dryomov void *struct_end; 1698205ee118SIlya Dryomov int ret = 0; 1699205ee118SIlya Dryomov 1700205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1701205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1702205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1703205ee118SIlya Dryomov if (struct_v < 3) { 1704205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 1705205ee118SIlya Dryomov struct_v, struct_cv); 1706205ee118SIlya Dryomov goto e_inval; 1707205ee118SIlya Dryomov } 1708205ee118SIlya Dryomov if (struct_cv > 6) { 1709205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 1710205ee118SIlya Dryomov struct_v, struct_cv); 1711205ee118SIlya Dryomov goto e_inval; 1712205ee118SIlya Dryomov } 1713205ee118SIlya Dryomov len = ceph_decode_32(p); 1714205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1715205ee118SIlya Dryomov struct_end = *p + len; 1716205ee118SIlya Dryomov 1717205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 1718205ee118SIlya Dryomov *p += 4; /* skip preferred */ 1719205ee118SIlya Dryomov 1720205ee118SIlya Dryomov len = ceph_decode_32(p); 1721205ee118SIlya Dryomov if (len > 0) { 1722205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 1723205ee118SIlya Dryomov goto e_inval; 1724205ee118SIlya Dryomov } 1725205ee118SIlya Dryomov 1726205ee118SIlya Dryomov if (struct_v >= 5) { 1727205ee118SIlya Dryomov len = ceph_decode_32(p); 1728205ee118SIlya Dryomov if (len > 0) { 1729205ee118SIlya Dryomov pr_warn("ceph_object_locator::nspace is set\n"); 1730205ee118SIlya Dryomov goto e_inval; 1731205ee118SIlya Dryomov } 1732205ee118SIlya Dryomov } 1733205ee118SIlya Dryomov 1734205ee118SIlya Dryomov if (struct_v >= 6) { 1735205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 1736205ee118SIlya Dryomov if (hash != -1) { 1737205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 1738205ee118SIlya Dryomov goto e_inval; 1739205ee118SIlya Dryomov } 1740205ee118SIlya Dryomov } 1741205ee118SIlya Dryomov 1742205ee118SIlya Dryomov /* skip the rest */ 1743205ee118SIlya Dryomov *p = struct_end; 1744205ee118SIlya Dryomov out: 1745205ee118SIlya Dryomov return ret; 1746205ee118SIlya Dryomov 1747205ee118SIlya Dryomov e_inval: 1748205ee118SIlya Dryomov ret = -EINVAL; 1749205ee118SIlya Dryomov goto out; 1750205ee118SIlya Dryomov } 1751205ee118SIlya Dryomov 1752205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 1753205ee118SIlya Dryomov struct ceph_request_redirect *redir) 1754205ee118SIlya Dryomov { 1755205ee118SIlya Dryomov u8 struct_v, struct_cv; 1756205ee118SIlya Dryomov u32 len; 1757205ee118SIlya Dryomov void *struct_end; 1758205ee118SIlya Dryomov int ret; 1759205ee118SIlya Dryomov 1760205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1761205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1762205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1763205ee118SIlya Dryomov if (struct_cv > 1) { 1764205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 1765205ee118SIlya Dryomov struct_v, struct_cv); 1766205ee118SIlya Dryomov goto e_inval; 1767205ee118SIlya Dryomov } 1768205ee118SIlya Dryomov len = ceph_decode_32(p); 1769205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1770205ee118SIlya Dryomov struct_end = *p + len; 1771205ee118SIlya Dryomov 1772205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 1773205ee118SIlya Dryomov if (ret) 1774205ee118SIlya Dryomov goto out; 1775205ee118SIlya Dryomov 1776205ee118SIlya Dryomov len = ceph_decode_32(p); 1777205ee118SIlya Dryomov if (len > 0) { 1778205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 1779205ee118SIlya Dryomov goto e_inval; 1780205ee118SIlya Dryomov } 1781205ee118SIlya Dryomov 1782205ee118SIlya Dryomov len = ceph_decode_32(p); 1783205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 1784205ee118SIlya Dryomov 1785205ee118SIlya Dryomov /* skip the rest */ 1786205ee118SIlya Dryomov *p = struct_end; 1787205ee118SIlya Dryomov out: 1788205ee118SIlya Dryomov return ret; 1789205ee118SIlya Dryomov 1790205ee118SIlya Dryomov e_inval: 1791205ee118SIlya Dryomov ret = -EINVAL; 1792205ee118SIlya Dryomov goto out; 1793205ee118SIlya Dryomov } 1794205ee118SIlya Dryomov 179525845472SSage Weil static void complete_request(struct ceph_osd_request *req) 179625845472SSage Weil { 179725845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 179825845472SSage Weil } 179925845472SSage Weil 18003d14c5d2SYehuda Sadeh /* 18013d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 18023d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 18033d14c5d2SYehuda Sadeh */ 180470cf052dSShraddha Barke static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg) 18053d14c5d2SYehuda Sadeh { 18061b83bef2SSage Weil void *p, *end; 18073d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1808205ee118SIlya Dryomov struct ceph_request_redirect redir; 18093d14c5d2SYehuda Sadeh u64 tid; 18101b83bef2SSage Weil int object_len; 181179528734SAlex Elder unsigned int numops; 181279528734SAlex Elder int payload_len, flags; 18133d14c5d2SYehuda Sadeh s32 result; 18141b83bef2SSage Weil s32 retry_attempt; 18151b83bef2SSage Weil struct ceph_pg pg; 18161b83bef2SSage Weil int err; 18171b83bef2SSage Weil u32 reassert_epoch; 18181b83bef2SSage Weil u64 reassert_version; 18191b83bef2SSage Weil u32 osdmap_epoch; 18200d5af164SAlex Elder int already_completed; 18219fc6e064SAlex Elder u32 bytes; 1822b0b31a8fSIlya Dryomov u8 decode_redir; 182379528734SAlex Elder unsigned int i; 18243d14c5d2SYehuda Sadeh 18253d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 18261b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 18271b83bef2SSage Weil 18281b83bef2SSage Weil p = msg->front.iov_base; 18291b83bef2SSage Weil end = p + msg->front.iov_len; 18301b83bef2SSage Weil 18311b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 18321b83bef2SSage Weil object_len = ceph_decode_32(&p); 18331b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 18341b83bef2SSage Weil p += object_len; 18351b83bef2SSage Weil 1836ef4859d6SAlex Elder err = ceph_decode_pgid(&p, end, &pg); 18371b83bef2SSage Weil if (err) 18383d14c5d2SYehuda Sadeh goto bad; 18391b83bef2SSage Weil 18401b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 18411b83bef2SSage Weil flags = ceph_decode_64(&p); 18421b83bef2SSage Weil result = ceph_decode_32(&p); 18431b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 18441b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 18451b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 18461b83bef2SSage Weil 18473d14c5d2SYehuda Sadeh /* lookup */ 1848ff513aceSIlya Dryomov down_read(&osdc->map_sem); 18493d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 18503d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 18513d14c5d2SYehuda Sadeh if (req == NULL) { 18523d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 18538058fd45SAlex Elder goto bad_mutex; 18543d14c5d2SYehuda Sadeh } 18553d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 18561b83bef2SSage Weil 18571b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 18581b83bef2SSage Weil req, result); 18591b83bef2SSage Weil 186018741196SDan Carpenter ceph_decode_need(&p, end, 4, bad_put); 18611b83bef2SSage Weil numops = ceph_decode_32(&p); 18623f1af42aSIlya Dryomov if (numops > CEPH_OSD_MAX_OPS) 18631b83bef2SSage Weil goto bad_put; 18641b83bef2SSage Weil if (numops != req->r_num_ops) 18651b83bef2SSage Weil goto bad_put; 18661b83bef2SSage Weil payload_len = 0; 186718741196SDan Carpenter ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put); 18681b83bef2SSage Weil for (i = 0; i < numops; i++) { 18691b83bef2SSage Weil struct ceph_osd_op *op = p; 18701b83bef2SSage Weil int len; 18711b83bef2SSage Weil 18721b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 18737665d85bSYan, Zheng req->r_ops[i].outdata_len = len; 18741b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 18751b83bef2SSage Weil payload_len += len; 18761b83bef2SSage Weil p += sizeof(*op); 18771b83bef2SSage Weil } 18789fc6e064SAlex Elder bytes = le32_to_cpu(msg->hdr.data_len); 18799fc6e064SAlex Elder if (payload_len != bytes) { 1880b9a67899SJoe Perches pr_warn("sum of op payload lens %d != data_len %d\n", 18819fc6e064SAlex Elder payload_len, bytes); 18821b83bef2SSage Weil goto bad_put; 18831b83bef2SSage Weil } 18841b83bef2SSage Weil 188518741196SDan Carpenter ceph_decode_need(&p, end, 4 + numops * 4, bad_put); 18861b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 18871b83bef2SSage Weil for (i = 0; i < numops; i++) 18887665d85bSYan, Zheng req->r_ops[i].rval = ceph_decode_32(&p); 18893d14c5d2SYehuda Sadeh 1890205ee118SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 6) { 1891205ee118SIlya Dryomov p += 8 + 4; /* skip replay_version */ 1892205ee118SIlya Dryomov p += 8; /* skip user_version */ 1893205ee118SIlya Dryomov 1894b0b31a8fSIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 7) 1895b0b31a8fSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, bad_put); 1896b0b31a8fSIlya Dryomov else 1897b0b31a8fSIlya Dryomov decode_redir = 1; 1898b0b31a8fSIlya Dryomov } else { 1899b0b31a8fSIlya Dryomov decode_redir = 0; 1900b0b31a8fSIlya Dryomov } 1901b0b31a8fSIlya Dryomov 1902b0b31a8fSIlya Dryomov if (decode_redir) { 1903205ee118SIlya Dryomov err = ceph_redirect_decode(&p, end, &redir); 1904205ee118SIlya Dryomov if (err) 1905205ee118SIlya Dryomov goto bad_put; 1906205ee118SIlya Dryomov } else { 1907205ee118SIlya Dryomov redir.oloc.pool = -1; 1908205ee118SIlya Dryomov } 1909205ee118SIlya Dryomov 1910205ee118SIlya Dryomov if (redir.oloc.pool != -1) { 1911205ee118SIlya Dryomov dout("redirect pool %lld\n", redir.oloc.pool); 1912205ee118SIlya Dryomov 1913205ee118SIlya Dryomov __unregister_request(osdc, req); 1914205ee118SIlya Dryomov 1915205ee118SIlya Dryomov req->r_target_oloc = redir.oloc; /* struct */ 1916205ee118SIlya Dryomov 1917205ee118SIlya Dryomov /* 1918205ee118SIlya Dryomov * Start redirect requests with nofail=true. If 1919205ee118SIlya Dryomov * mapping fails, request will end up on the notarget 1920205ee118SIlya Dryomov * list, waiting for the new osdmap (which can take 1921205ee118SIlya Dryomov * a while), even though the original request mapped 1922205ee118SIlya Dryomov * successfully. In the future we might want to follow 1923205ee118SIlya Dryomov * original request's nofail setting here. 1924205ee118SIlya Dryomov */ 1925ff513aceSIlya Dryomov err = __ceph_osdc_start_request(osdc, req, true); 1926205ee118SIlya Dryomov BUG_ON(err); 1927205ee118SIlya Dryomov 1928ff513aceSIlya Dryomov goto out_unlock; 1929205ee118SIlya Dryomov } 1930205ee118SIlya Dryomov 1931eb845ff1SYan, Zheng already_completed = req->r_got_reply; 19323d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 19331b83bef2SSage Weil req->r_result = result; 19343d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 19353d14c5d2SYehuda Sadeh bytes); 19363d14c5d2SYehuda Sadeh if (req->r_result == 0) 19373d14c5d2SYehuda Sadeh req->r_result = bytes; 19383d14c5d2SYehuda Sadeh 19393d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 19401b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 19411b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 19423d14c5d2SYehuda Sadeh 19433d14c5d2SYehuda Sadeh req->r_got_reply = 1; 19443d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 19453d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 1946ff513aceSIlya Dryomov goto out_unlock; 19473d14c5d2SYehuda Sadeh } 19483d14c5d2SYehuda Sadeh 19493d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 19503d14c5d2SYehuda Sadeh 1951a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1952a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1953a40c4f10SYehuda Sadeh 19543d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 19553d14c5d2SYehuda Sadeh if (result < 0 || 19563d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 19573d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 19583d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 19593d14c5d2SYehuda Sadeh 19603d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1961ff513aceSIlya Dryomov up_read(&osdc->map_sem); 19623d14c5d2SYehuda Sadeh 1963eb845ff1SYan, Zheng if (!already_completed) { 196461c5d6bfSYan, Zheng if (req->r_unsafe_callback && 196561c5d6bfSYan, Zheng result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK)) 196661c5d6bfSYan, Zheng req->r_unsafe_callback(req, true); 19673d14c5d2SYehuda Sadeh if (req->r_callback) 19683d14c5d2SYehuda Sadeh req->r_callback(req, msg); 19693d14c5d2SYehuda Sadeh else 19703d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 1971eb845ff1SYan, Zheng } 19723d14c5d2SYehuda Sadeh 197361c5d6bfSYan, Zheng if (flags & CEPH_OSD_FLAG_ONDISK) { 197461c5d6bfSYan, Zheng if (req->r_unsafe_callback && already_completed) 197561c5d6bfSYan, Zheng req->r_unsafe_callback(req, false); 197625845472SSage Weil complete_request(req); 197761c5d6bfSYan, Zheng } 19783d14c5d2SYehuda Sadeh 1979ff513aceSIlya Dryomov out: 1980a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 19813d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 19823d14c5d2SYehuda Sadeh return; 1983ff513aceSIlya Dryomov out_unlock: 1984ff513aceSIlya Dryomov mutex_unlock(&osdc->request_mutex); 1985ff513aceSIlya Dryomov up_read(&osdc->map_sem); 1986ff513aceSIlya Dryomov goto out; 19873d14c5d2SYehuda Sadeh 19881b83bef2SSage Weil bad_put: 198937c89bdeSLi Wang req->r_result = -EIO; 199037c89bdeSLi Wang __unregister_request(osdc, req); 199137c89bdeSLi Wang if (req->r_callback) 199237c89bdeSLi Wang req->r_callback(req, msg); 199337c89bdeSLi Wang else 199437c89bdeSLi Wang complete_all(&req->r_completion); 199537c89bdeSLi Wang complete_request(req); 19961b83bef2SSage Weil ceph_osdc_put_request(req); 19978058fd45SAlex Elder bad_mutex: 19988058fd45SAlex Elder mutex_unlock(&osdc->request_mutex); 1999ff513aceSIlya Dryomov up_read(&osdc->map_sem); 20003d14c5d2SYehuda Sadeh bad: 20011b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 20021b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 20033d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 20043d14c5d2SYehuda Sadeh } 20053d14c5d2SYehuda Sadeh 20066f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 20073d14c5d2SYehuda Sadeh { 20083d14c5d2SYehuda Sadeh struct rb_node *p, *n; 20093d14c5d2SYehuda Sadeh 20107eb71e03SIlya Dryomov dout("%s %p\n", __func__, osdc); 20113d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 20126f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 20133d14c5d2SYehuda Sadeh 20143d14c5d2SYehuda Sadeh n = rb_next(p); 20153d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 20163d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 20173d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 20183d14c5d2SYehuda Sadeh osd->o_osd), 20193d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 20203d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 20213d14c5d2SYehuda Sadeh } 20223d14c5d2SYehuda Sadeh } 20233d14c5d2SYehuda Sadeh 20243d14c5d2SYehuda Sadeh /* 20256f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 20266f6c7006SSage Weil * no osd, request a new map. 20273d14c5d2SYehuda Sadeh * 2028e6d50f67SAlex Elder * Caller should hold map_sem for read. 20293d14c5d2SYehuda Sadeh */ 20309a1ea2dbSJosh Durgin static void kick_requests(struct ceph_osd_client *osdc, bool force_resend, 20319a1ea2dbSJosh Durgin bool force_resend_writes) 20323d14c5d2SYehuda Sadeh { 2033a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 20346f6c7006SSage Weil struct rb_node *p; 20356f6c7006SSage Weil int needmap = 0; 20366f6c7006SSage Weil int err; 20379a1ea2dbSJosh Durgin bool force_resend_req; 20383d14c5d2SYehuda Sadeh 20399a1ea2dbSJosh Durgin dout("kick_requests %s %s\n", force_resend ? " (force resend)" : "", 20409a1ea2dbSJosh Durgin force_resend_writes ? " (force resend writes)" : ""); 20413d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 20426194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 20436f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 20446194ea89SSage Weil p = rb_next(p); 2045ab60b16dSAlex Elder 2046ab60b16dSAlex Elder /* 2047ab60b16dSAlex Elder * For linger requests that have not yet been 2048ab60b16dSAlex Elder * registered, move them to the linger list; they'll 2049ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 2050ab60b16dSAlex Elder * the request before re-registering it as a linger 2051ab60b16dSAlex Elder * request to ensure the __map_request() below 2052ab60b16dSAlex Elder * will decide it needs to be sent. 2053ab60b16dSAlex Elder */ 2054ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 2055ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 2056ab60b16dSAlex Elder req, req->r_tid, 2057ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 205896e4dac6SAlex Elder ceph_osdc_get_request(req); 2059ab60b16dSAlex Elder __unregister_request(osdc, req); 2060ab60b16dSAlex Elder __register_linger_request(osdc, req); 206196e4dac6SAlex Elder ceph_osdc_put_request(req); 2062ab60b16dSAlex Elder continue; 2063ab60b16dSAlex Elder } 2064ab60b16dSAlex Elder 20659a1ea2dbSJosh Durgin force_resend_req = force_resend || 20669a1ea2dbSJosh Durgin (force_resend_writes && 20679a1ea2dbSJosh Durgin req->r_flags & CEPH_OSD_FLAG_WRITE); 20689a1ea2dbSJosh Durgin err = __map_request(osdc, req, force_resend_req); 20696f6c7006SSage Weil if (err < 0) 20706f6c7006SSage Weil continue; /* error */ 20716f6c7006SSage Weil if (req->r_osd == NULL) { 20726f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 20736f6c7006SSage Weil needmap++; /* request a newer map */ 20746f6c7006SSage Weil } else if (err > 0) { 20756194ea89SSage Weil if (!req->r_linger) { 20766194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 20776194ea89SSage Weil req->r_tid, 20786f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 20796f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 20806f6c7006SSage Weil } 20816f6c7006SSage Weil } 20826194ea89SSage Weil } 2083a40c4f10SYehuda Sadeh 2084a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 2085a40c4f10SYehuda Sadeh r_linger_item) { 2086a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 2087a40c4f10SYehuda Sadeh 20889a1ea2dbSJosh Durgin err = __map_request(osdc, req, 20899a1ea2dbSJosh Durgin force_resend || force_resend_writes); 2090ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 2091a40c4f10SYehuda Sadeh if (err < 0) 2092a40c4f10SYehuda Sadeh continue; /* hrm! */ 2093b0494532SIlya Dryomov if (req->r_osd == NULL || err > 0) { 2094a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 2095b0494532SIlya Dryomov dout("lingering %p tid %llu maps to no osd\n", 2096b0494532SIlya Dryomov req, req->r_tid); 2097b0494532SIlya Dryomov /* 2098b0494532SIlya Dryomov * A homeless lingering request makes 2099b0494532SIlya Dryomov * no sense, as it's job is to keep 2100b0494532SIlya Dryomov * a particular OSD connection open. 2101b0494532SIlya Dryomov * Request a newer map and kick the 2102b0494532SIlya Dryomov * request, knowing that it won't be 2103b0494532SIlya Dryomov * resent until we actually get a map 2104b0494532SIlya Dryomov * that can tell us where to send it. 2105b0494532SIlya Dryomov */ 2106b0494532SIlya Dryomov needmap++; 2107a40c4f10SYehuda Sadeh } 2108a40c4f10SYehuda Sadeh 2109b0494532SIlya Dryomov dout("kicking lingering %p tid %llu osd%d\n", req, 2110b0494532SIlya Dryomov req->r_tid, req->r_osd ? req->r_osd->o_osd : -1); 2111a40c4f10SYehuda Sadeh __register_request(osdc, req); 2112c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 2113a40c4f10SYehuda Sadeh } 2114b0494532SIlya Dryomov } 211514d2f38dSAlex Elder reset_changed_osds(osdc); 21163d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 21173d14c5d2SYehuda Sadeh 21183d14c5d2SYehuda Sadeh if (needmap) { 21193d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 21203d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 21213d14c5d2SYehuda Sadeh } 21223d14c5d2SYehuda Sadeh } 21236f6c7006SSage Weil 21246f6c7006SSage Weil 21253d14c5d2SYehuda Sadeh /* 21263d14c5d2SYehuda Sadeh * Process updated osd map. 21273d14c5d2SYehuda Sadeh * 21283d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 21293d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 21303d14c5d2SYehuda Sadeh * off to different OSDs as needed. 21313d14c5d2SYehuda Sadeh */ 21323d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 21333d14c5d2SYehuda Sadeh { 21343d14c5d2SYehuda Sadeh void *p, *end, *next; 21353d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 21363d14c5d2SYehuda Sadeh u32 epoch; 21373d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 21383d14c5d2SYehuda Sadeh int err; 21393d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 21409a1ea2dbSJosh Durgin bool was_full; 21413d14c5d2SYehuda Sadeh 21423d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 21433d14c5d2SYehuda Sadeh p = msg->front.iov_base; 21443d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 21453d14c5d2SYehuda Sadeh 21463d14c5d2SYehuda Sadeh /* verify fsid */ 21473d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 21483d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 21493d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 21503d14c5d2SYehuda Sadeh return; 21513d14c5d2SYehuda Sadeh 21523d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 21533d14c5d2SYehuda Sadeh 21549a1ea2dbSJosh Durgin was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 21559a1ea2dbSJosh Durgin 21563d14c5d2SYehuda Sadeh /* incremental maps */ 21573d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 21583d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 21593d14c5d2SYehuda Sadeh while (nr_maps > 0) { 21603d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 21613d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 21623d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 21633d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 21643d14c5d2SYehuda Sadeh next = p + maplen; 21653d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 21663d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 21673d14c5d2SYehuda Sadeh epoch, maplen); 21683d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 21693d14c5d2SYehuda Sadeh osdc->osdmap, 217015d9882cSAlex Elder &osdc->client->msgr); 21713d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 21723d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 21733d14c5d2SYehuda Sadeh goto bad; 21743d14c5d2SYehuda Sadeh } 21753d14c5d2SYehuda Sadeh BUG_ON(!newmap); 21763d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 21773d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 21783d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 21793d14c5d2SYehuda Sadeh } 21809a1ea2dbSJosh Durgin was_full = was_full || 21819a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 21829a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 21839a1ea2dbSJosh Durgin kick_requests(osdc, 0, was_full); 21843d14c5d2SYehuda Sadeh } else { 21853d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 21863d14c5d2SYehuda Sadeh epoch, maplen); 21873d14c5d2SYehuda Sadeh } 21883d14c5d2SYehuda Sadeh p = next; 21893d14c5d2SYehuda Sadeh nr_maps--; 21903d14c5d2SYehuda Sadeh } 21913d14c5d2SYehuda Sadeh if (newmap) 21923d14c5d2SYehuda Sadeh goto done; 21933d14c5d2SYehuda Sadeh 21943d14c5d2SYehuda Sadeh /* full maps */ 21953d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 21963d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 21973d14c5d2SYehuda Sadeh while (nr_maps) { 21983d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 21993d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 22003d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 22013d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 22023d14c5d2SYehuda Sadeh if (nr_maps > 1) { 22033d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 22043d14c5d2SYehuda Sadeh epoch, maplen); 22053d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 22063d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 22073d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 22083d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 22093d14c5d2SYehuda Sadeh } else { 221038d6453cSSage Weil int skipped_map = 0; 221138d6453cSSage Weil 22123d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 2213a2505d63SIlya Dryomov newmap = ceph_osdmap_decode(&p, p+maplen); 22143d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 22153d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 22163d14c5d2SYehuda Sadeh goto bad; 22173d14c5d2SYehuda Sadeh } 22183d14c5d2SYehuda Sadeh BUG_ON(!newmap); 22193d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 22203d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 222138d6453cSSage Weil if (oldmap) { 222238d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 222338d6453cSSage Weil skipped_map = 1; 22243d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 222538d6453cSSage Weil } 22269a1ea2dbSJosh Durgin was_full = was_full || 22279a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 22289a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 22299a1ea2dbSJosh Durgin kick_requests(osdc, skipped_map, was_full); 22303d14c5d2SYehuda Sadeh } 22313d14c5d2SYehuda Sadeh p += maplen; 22323d14c5d2SYehuda Sadeh nr_maps--; 22333d14c5d2SYehuda Sadeh } 22343d14c5d2SYehuda Sadeh 2235b72e19b9SDan Carpenter if (!osdc->osdmap) 2236b72e19b9SDan Carpenter goto bad; 22373d14c5d2SYehuda Sadeh done: 22383d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 223982dcabadSIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 224082dcabadSIlya Dryomov osdc->osdmap->epoch); 2241cd634fb6SSage Weil 2242cd634fb6SSage Weil /* 2243cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 2244cd634fb6SSage Weil * we find out when we are no longer full and stop returning 2245cd634fb6SSage Weil * ENOSPC. 2246cd634fb6SSage Weil */ 2247d29adb34SJosh Durgin if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 2248d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || 2249d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) 2250cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 2251cd634fb6SSage Weil 2252f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 2253f9d25199SAlex Elder __send_queued(osdc); 2254f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 22553d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 22563d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 22573d14c5d2SYehuda Sadeh return; 22583d14c5d2SYehuda Sadeh 22593d14c5d2SYehuda Sadeh bad: 22603d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 22613d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 22623d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 22633d14c5d2SYehuda Sadeh } 22643d14c5d2SYehuda Sadeh 22653d14c5d2SYehuda Sadeh /* 2266a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 2267a40c4f10SYehuda Sadeh * 2268a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 2269a40c4f10SYehuda Sadeh */ 2270a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 2271a40c4f10SYehuda Sadeh { 2272a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 2273a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 2274a40c4f10SYehuda Sadeh 2275a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 2276a40c4f10SYehuda Sadeh kfree(event); 2277a40c4f10SYehuda Sadeh } 2278a40c4f10SYehuda Sadeh 2279a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 2280a40c4f10SYehuda Sadeh { 2281a40c4f10SYehuda Sadeh kref_get(&event->kref); 2282a40c4f10SYehuda Sadeh } 2283a40c4f10SYehuda Sadeh 2284a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 2285a40c4f10SYehuda Sadeh { 2286a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 2287a40c4f10SYehuda Sadeh } 2288a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 2289a40c4f10SYehuda Sadeh 2290a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 2291a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 2292a40c4f10SYehuda Sadeh { 2293a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2294a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2295a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2296a40c4f10SYehuda Sadeh 2297a40c4f10SYehuda Sadeh while (*p) { 2298a40c4f10SYehuda Sadeh parent = *p; 2299a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2300a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 2301a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2302a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 2303a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2304a40c4f10SYehuda Sadeh else 2305a40c4f10SYehuda Sadeh BUG(); 2306a40c4f10SYehuda Sadeh } 2307a40c4f10SYehuda Sadeh 2308a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 2309a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 2310a40c4f10SYehuda Sadeh } 2311a40c4f10SYehuda Sadeh 2312a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 2313a40c4f10SYehuda Sadeh u64 cookie) 2314a40c4f10SYehuda Sadeh { 2315a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2316a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2317a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2318a40c4f10SYehuda Sadeh 2319a40c4f10SYehuda Sadeh while (*p) { 2320a40c4f10SYehuda Sadeh parent = *p; 2321a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2322a40c4f10SYehuda Sadeh if (cookie < event->cookie) 2323a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2324a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 2325a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2326a40c4f10SYehuda Sadeh else 2327a40c4f10SYehuda Sadeh return event; 2328a40c4f10SYehuda Sadeh } 2329a40c4f10SYehuda Sadeh return NULL; 2330a40c4f10SYehuda Sadeh } 2331a40c4f10SYehuda Sadeh 2332a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 2333a40c4f10SYehuda Sadeh { 2334a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2335a40c4f10SYehuda Sadeh 2336a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 2337a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 2338a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 2339a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2340a40c4f10SYehuda Sadeh } else { 2341a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 2342a40c4f10SYehuda Sadeh } 2343a40c4f10SYehuda Sadeh } 2344a40c4f10SYehuda Sadeh 2345a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 2346a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 23473c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 2348a40c4f10SYehuda Sadeh { 2349a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2350a40c4f10SYehuda Sadeh 2351a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 2352a40c4f10SYehuda Sadeh if (!event) 2353a40c4f10SYehuda Sadeh return -ENOMEM; 2354a40c4f10SYehuda Sadeh 2355a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 2356a40c4f10SYehuda Sadeh event->cb = event_cb; 23573c663bbdSAlex Elder event->one_shot = 0; 2358a40c4f10SYehuda Sadeh event->data = data; 2359a40c4f10SYehuda Sadeh event->osdc = osdc; 2360a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 23613ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 2362a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 2363a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 2364a40c4f10SYehuda Sadeh 2365a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2366a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 2367a40c4f10SYehuda Sadeh __insert_event(osdc, event); 2368a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2369a40c4f10SYehuda Sadeh 2370a40c4f10SYehuda Sadeh *pevent = event; 2371a40c4f10SYehuda Sadeh return 0; 2372a40c4f10SYehuda Sadeh } 2373a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 2374a40c4f10SYehuda Sadeh 2375a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 2376a40c4f10SYehuda Sadeh { 2377a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2378a40c4f10SYehuda Sadeh 2379a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 2380a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2381a40c4f10SYehuda Sadeh __remove_event(event); 2382a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2383a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 2384a40c4f10SYehuda Sadeh } 2385a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 2386a40c4f10SYehuda Sadeh 2387a40c4f10SYehuda Sadeh 2388a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 2389a40c4f10SYehuda Sadeh { 2390a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 2391a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 2392a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 2393a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 2394a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 2395a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 2396a40c4f10SYehuda Sadeh 2397a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 2398a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 2399a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 2400a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2401a40c4f10SYehuda Sadeh kfree(event_work); 2402a40c4f10SYehuda Sadeh } 2403a40c4f10SYehuda Sadeh 2404a40c4f10SYehuda Sadeh 2405a40c4f10SYehuda Sadeh /* 2406a40c4f10SYehuda Sadeh * Process osd watch notifications 2407a40c4f10SYehuda Sadeh */ 24083c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 24093c663bbdSAlex Elder struct ceph_msg *msg) 2410a40c4f10SYehuda Sadeh { 2411a40c4f10SYehuda Sadeh void *p, *end; 2412a40c4f10SYehuda Sadeh u8 proto_ver; 2413a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 2414a40c4f10SYehuda Sadeh u8 opcode; 2415a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2416a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 2417a40c4f10SYehuda Sadeh 2418a40c4f10SYehuda Sadeh p = msg->front.iov_base; 2419a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 2420a40c4f10SYehuda Sadeh 2421a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 2422a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 2423a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 2424a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 2425a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 2426a40c4f10SYehuda Sadeh 2427a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2428a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 2429a40c4f10SYehuda Sadeh if (event) { 24303c663bbdSAlex Elder BUG_ON(event->one_shot); 2431a40c4f10SYehuda Sadeh get_event(event); 2432a40c4f10SYehuda Sadeh } 2433a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2434a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 2435a40c4f10SYehuda Sadeh cookie, ver, event); 2436a40c4f10SYehuda Sadeh if (event) { 2437a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 2438a40c4f10SYehuda Sadeh if (!event_work) { 243991883cd2SIlya Dryomov pr_err("couldn't allocate event_work\n"); 244091883cd2SIlya Dryomov ceph_osdc_put_event(event); 244191883cd2SIlya Dryomov return; 2442a40c4f10SYehuda Sadeh } 24436b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 2444a40c4f10SYehuda Sadeh event_work->event = event; 2445a40c4f10SYehuda Sadeh event_work->ver = ver; 2446a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 2447a40c4f10SYehuda Sadeh event_work->opcode = opcode; 244891883cd2SIlya Dryomov 244991883cd2SIlya Dryomov queue_work(osdc->notify_wq, &event_work->work); 2450a40c4f10SYehuda Sadeh } 2451a40c4f10SYehuda Sadeh 2452a40c4f10SYehuda Sadeh return; 2453a40c4f10SYehuda Sadeh 2454a40c4f10SYehuda Sadeh bad: 2455a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 2456a40c4f10SYehuda Sadeh } 2457a40c4f10SYehuda Sadeh 2458a40c4f10SYehuda Sadeh /* 2459e65550fdSAlex Elder * build new request AND message 2460e65550fdSAlex Elder * 2461e65550fdSAlex Elder */ 2462e65550fdSAlex Elder void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, 2463e65550fdSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 2464e65550fdSAlex Elder struct timespec *mtime) 2465e65550fdSAlex Elder { 2466e65550fdSAlex Elder struct ceph_msg *msg = req->r_request; 2467e65550fdSAlex Elder void *p; 2468e65550fdSAlex Elder size_t msg_size; 2469e65550fdSAlex Elder int flags = req->r_flags; 2470e65550fdSAlex Elder u64 data_len; 2471e65550fdSAlex Elder unsigned int i; 2472e65550fdSAlex Elder 2473e65550fdSAlex Elder req->r_snapid = snap_id; 247484127282SIlya Dryomov WARN_ON(snapc != req->r_snapc); 2475e65550fdSAlex Elder 2476e65550fdSAlex Elder /* encode request */ 2477e65550fdSAlex Elder msg->hdr.version = cpu_to_le16(4); 2478e65550fdSAlex Elder 2479e65550fdSAlex Elder p = msg->front.iov_base; 2480e65550fdSAlex Elder ceph_encode_32(&p, 1); /* client_inc is always 1 */ 2481e65550fdSAlex Elder req->r_request_osdmap_epoch = p; 2482e65550fdSAlex Elder p += 4; 2483e65550fdSAlex Elder req->r_request_flags = p; 2484e65550fdSAlex Elder p += 4; 2485e65550fdSAlex Elder if (req->r_flags & CEPH_OSD_FLAG_WRITE) 2486e65550fdSAlex Elder ceph_encode_timespec(p, mtime); 2487e65550fdSAlex Elder p += sizeof(struct ceph_timespec); 2488e65550fdSAlex Elder req->r_request_reassert_version = p; 2489e65550fdSAlex Elder p += sizeof(struct ceph_eversion); /* will get filled in */ 2490e65550fdSAlex Elder 2491e65550fdSAlex Elder /* oloc */ 2492e65550fdSAlex Elder ceph_encode_8(&p, 4); 2493e65550fdSAlex Elder ceph_encode_8(&p, 4); 2494e65550fdSAlex Elder ceph_encode_32(&p, 8 + 4 + 4); 2495e65550fdSAlex Elder req->r_request_pool = p; 2496e65550fdSAlex Elder p += 8; 2497e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2498e65550fdSAlex Elder ceph_encode_32(&p, 0); /* key len */ 2499e65550fdSAlex Elder 2500e65550fdSAlex Elder ceph_encode_8(&p, 1); 2501e65550fdSAlex Elder req->r_request_pgid = p; 2502e65550fdSAlex Elder p += 8 + 4; 2503e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2504e65550fdSAlex Elder 2505e65550fdSAlex Elder /* oid */ 25063c972c95SIlya Dryomov ceph_encode_32(&p, req->r_base_oid.name_len); 25073c972c95SIlya Dryomov memcpy(p, req->r_base_oid.name, req->r_base_oid.name_len); 2508d30291b9SIlya Dryomov dout("oid %*pE len %d\n", req->r_base_oid.name_len, 25093c972c95SIlya Dryomov req->r_base_oid.name, req->r_base_oid.name_len); 25103c972c95SIlya Dryomov p += req->r_base_oid.name_len; 2511e65550fdSAlex Elder 2512e65550fdSAlex Elder /* ops--can imply data */ 2513e65550fdSAlex Elder ceph_encode_16(&p, (u16)req->r_num_ops); 2514e65550fdSAlex Elder data_len = 0; 2515e65550fdSAlex Elder for (i = 0; i < req->r_num_ops; i++) { 2516e65550fdSAlex Elder data_len += osd_req_encode_op(req, p, i); 2517e65550fdSAlex Elder p += sizeof(struct ceph_osd_op); 2518e65550fdSAlex Elder } 2519e65550fdSAlex Elder 2520e65550fdSAlex Elder /* snaps */ 2521e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapid); 2522e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 2523e65550fdSAlex Elder ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 2524e65550fdSAlex Elder if (req->r_snapc) { 252584127282SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) { 2526e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc->snaps[i]); 2527e65550fdSAlex Elder } 2528e65550fdSAlex Elder } 2529e65550fdSAlex Elder 2530e65550fdSAlex Elder req->r_request_attempts = p; 2531e65550fdSAlex Elder p += 4; 2532e65550fdSAlex Elder 2533e65550fdSAlex Elder /* data */ 2534e65550fdSAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 2535e65550fdSAlex Elder u16 data_off; 2536e65550fdSAlex Elder 2537e65550fdSAlex Elder /* 2538e65550fdSAlex Elder * The header "data_off" is a hint to the receiver 2539e65550fdSAlex Elder * allowing it to align received data into its 2540e65550fdSAlex Elder * buffers such that there's no need to re-copy 2541e65550fdSAlex Elder * it before writing it to disk (direct I/O). 2542e65550fdSAlex Elder */ 2543e65550fdSAlex Elder data_off = (u16) (off & 0xffff); 2544e65550fdSAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 2545e65550fdSAlex Elder } 2546e65550fdSAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 2547e65550fdSAlex Elder 2548e65550fdSAlex Elder BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 2549e65550fdSAlex Elder msg_size = p - msg->front.iov_base; 2550e65550fdSAlex Elder msg->front.iov_len = msg_size; 2551e65550fdSAlex Elder msg->hdr.front_len = cpu_to_le32(msg_size); 2552e65550fdSAlex Elder 2553e65550fdSAlex Elder dout("build_request msg_size was %d\n", (int)msg_size); 2554e65550fdSAlex Elder } 2555e65550fdSAlex Elder EXPORT_SYMBOL(ceph_osdc_build_request); 2556e65550fdSAlex Elder 2557e65550fdSAlex Elder /* 25583d14c5d2SYehuda Sadeh * Register request, send initial attempt. 25593d14c5d2SYehuda Sadeh */ 25603d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 25613d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 25623d14c5d2SYehuda Sadeh bool nofail) 25633d14c5d2SYehuda Sadeh { 25640bbfdfe8SIlya Dryomov int rc; 25653d14c5d2SYehuda Sadeh 25663d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 25673d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 25680bbfdfe8SIlya Dryomov 25690bbfdfe8SIlya Dryomov rc = __ceph_osdc_start_request(osdc, req, nofail); 25700bbfdfe8SIlya Dryomov 25713d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 25723d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 25730bbfdfe8SIlya Dryomov 25743d14c5d2SYehuda Sadeh return rc; 25753d14c5d2SYehuda Sadeh } 25763d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 25773d14c5d2SYehuda Sadeh 25783d14c5d2SYehuda Sadeh /* 2579c9f9b93dSIlya Dryomov * Unregister a registered request. The request is not completed (i.e. 2580c9f9b93dSIlya Dryomov * no callbacks or wakeups) - higher layers are supposed to know what 2581c9f9b93dSIlya Dryomov * they are canceling. 2582c9f9b93dSIlya Dryomov */ 2583c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 2584c9f9b93dSIlya Dryomov { 2585c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 2586c9f9b93dSIlya Dryomov 2587c9f9b93dSIlya Dryomov mutex_lock(&osdc->request_mutex); 2588c9f9b93dSIlya Dryomov if (req->r_linger) 2589c9f9b93dSIlya Dryomov __unregister_linger_request(osdc, req); 2590c9f9b93dSIlya Dryomov __unregister_request(osdc, req); 2591c9f9b93dSIlya Dryomov mutex_unlock(&osdc->request_mutex); 2592c9f9b93dSIlya Dryomov 2593c9f9b93dSIlya Dryomov dout("%s %p tid %llu canceled\n", __func__, req, req->r_tid); 2594c9f9b93dSIlya Dryomov } 2595c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 2596c9f9b93dSIlya Dryomov 2597c9f9b93dSIlya Dryomov /* 25983d14c5d2SYehuda Sadeh * wait for a request to complete 25993d14c5d2SYehuda Sadeh */ 26003d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 26013d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 26023d14c5d2SYehuda Sadeh { 26033d14c5d2SYehuda Sadeh int rc; 26043d14c5d2SYehuda Sadeh 2605c9f9b93dSIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 2606c9f9b93dSIlya Dryomov 26073d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 26083d14c5d2SYehuda Sadeh if (rc < 0) { 2609c9f9b93dSIlya Dryomov dout("%s %p tid %llu interrupted\n", __func__, req, req->r_tid); 2610c9f9b93dSIlya Dryomov ceph_osdc_cancel_request(req); 261125845472SSage Weil complete_request(req); 26123d14c5d2SYehuda Sadeh return rc; 26133d14c5d2SYehuda Sadeh } 26143d14c5d2SYehuda Sadeh 2615c9f9b93dSIlya Dryomov dout("%s %p tid %llu result %d\n", __func__, req, req->r_tid, 2616c9f9b93dSIlya Dryomov req->r_result); 26173d14c5d2SYehuda Sadeh return req->r_result; 26183d14c5d2SYehuda Sadeh } 26193d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 26203d14c5d2SYehuda Sadeh 26213d14c5d2SYehuda Sadeh /* 26223d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 26233d14c5d2SYehuda Sadeh */ 26243d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 26253d14c5d2SYehuda Sadeh { 26263d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 26273d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 26283d14c5d2SYehuda Sadeh 26293d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 26303d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 26313d14c5d2SYehuda Sadeh while (1) { 26323d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 26333d14c5d2SYehuda Sadeh if (!req) 26343d14c5d2SYehuda Sadeh break; 26353d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 26363d14c5d2SYehuda Sadeh break; 26373d14c5d2SYehuda Sadeh 26383d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 26393d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 26403d14c5d2SYehuda Sadeh continue; 26413d14c5d2SYehuda Sadeh 26423d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 26433d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 26443d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 26453d14c5d2SYehuda Sadeh req->r_tid, last_tid); 26463d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 26473d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 26483d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 26493d14c5d2SYehuda Sadeh } 26503d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 26513d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 26523d14c5d2SYehuda Sadeh } 26533d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 26543d14c5d2SYehuda Sadeh 26553d14c5d2SYehuda Sadeh /* 2656dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 2657dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 2658dd935f44SJosh Durgin */ 2659f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 2660dd935f44SJosh Durgin { 2661dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 2662dd935f44SJosh Durgin } 2663dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 2664dd935f44SJosh Durgin 2665dd935f44SJosh Durgin 2666dd935f44SJosh Durgin /* 26673d14c5d2SYehuda Sadeh * init, shutdown 26683d14c5d2SYehuda Sadeh */ 26693d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 26703d14c5d2SYehuda Sadeh { 26713d14c5d2SYehuda Sadeh int err; 26723d14c5d2SYehuda Sadeh 26733d14c5d2SYehuda Sadeh dout("init\n"); 26743d14c5d2SYehuda Sadeh osdc->client = client; 26753d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 26763d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 26773d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 26783d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 26793d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 26803d14c5d2SYehuda Sadeh osdc->last_tid = 0; 26813d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 26823d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 26833d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 26843d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 26856f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 26866f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 2687a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 26883d14c5d2SYehuda Sadeh osdc->num_requests = 0; 26893d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 26903d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2691a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 2692a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 2693a40c4f10SYehuda Sadeh osdc->event_count = 0; 26943d14c5d2SYehuda Sadeh 26953d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 2696a319bf56SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 26973d14c5d2SYehuda Sadeh 26983d14c5d2SYehuda Sadeh err = -ENOMEM; 26999e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 27009e767adbSIlya Dryomov ceph_osd_request_cache); 27013d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 27023d14c5d2SYehuda Sadeh goto out; 27033d14c5d2SYehuda Sadeh 2704d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2705711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op"); 27063d14c5d2SYehuda Sadeh if (err < 0) 27073d14c5d2SYehuda Sadeh goto out_mempool; 2708d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 2709711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op_reply"); 27103d14c5d2SYehuda Sadeh if (err < 0) 27113d14c5d2SYehuda Sadeh goto out_msgpool; 2712a40c4f10SYehuda Sadeh 2713dbcae088SDan Carpenter err = -ENOMEM; 2714a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2715dbcae088SDan Carpenter if (!osdc->notify_wq) 2716c172ec5cSIlya Dryomov goto out_msgpool_reply; 2717c172ec5cSIlya Dryomov 27183d14c5d2SYehuda Sadeh return 0; 27193d14c5d2SYehuda Sadeh 2720c172ec5cSIlya Dryomov out_msgpool_reply: 2721c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 27223d14c5d2SYehuda Sadeh out_msgpool: 27233d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 27243d14c5d2SYehuda Sadeh out_mempool: 27253d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 27263d14c5d2SYehuda Sadeh out: 27273d14c5d2SYehuda Sadeh return err; 27283d14c5d2SYehuda Sadeh } 27293d14c5d2SYehuda Sadeh 27303d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 27313d14c5d2SYehuda Sadeh { 2732a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2733a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 27343d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 27353d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 27363d14c5d2SYehuda Sadeh if (osdc->osdmap) { 27373d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 27383d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 27393d14c5d2SYehuda Sadeh } 2740aca420bcSSage Weil remove_all_osds(osdc); 27413d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 27423d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 27433d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 27443d14c5d2SYehuda Sadeh } 27453d14c5d2SYehuda Sadeh 27463d14c5d2SYehuda Sadeh /* 27473d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 27483d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 27493d14c5d2SYehuda Sadeh */ 27503d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 27513d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 27523d14c5d2SYehuda Sadeh u64 off, u64 *plen, 27533d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2754b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 27553d14c5d2SYehuda Sadeh { 27563d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 27573d14c5d2SYehuda Sadeh int rc = 0; 27583d14c5d2SYehuda Sadeh 27593d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 27603d14c5d2SYehuda Sadeh vino.snap, off, *plen); 2761715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 27623d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 2763acead002SAlex Elder NULL, truncate_seq, truncate_size, 2764153e5167SAlex Elder false); 27656816282dSSage Weil if (IS_ERR(req)) 27666816282dSSage Weil return PTR_ERR(req); 27673d14c5d2SYehuda Sadeh 27683d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 27690fff87ecSAlex Elder 2770406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 2771a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 27723d14c5d2SYehuda Sadeh 2773e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 277443bfe5deSAlex Elder off, *plen, *plen, page_align); 27753d14c5d2SYehuda Sadeh 277679528734SAlex Elder ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); 277702ee07d3SAlex Elder 27783d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 27793d14c5d2SYehuda Sadeh if (!rc) 27803d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 27813d14c5d2SYehuda Sadeh 27823d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 27833d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 27843d14c5d2SYehuda Sadeh return rc; 27853d14c5d2SYehuda Sadeh } 27863d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 27873d14c5d2SYehuda Sadeh 27883d14c5d2SYehuda Sadeh /* 27893d14c5d2SYehuda Sadeh * do a synchronous write on N pages 27903d14c5d2SYehuda Sadeh */ 27913d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 27923d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 27933d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 27943d14c5d2SYehuda Sadeh u64 off, u64 len, 27953d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 27963d14c5d2SYehuda Sadeh struct timespec *mtime, 279724808826SAlex Elder struct page **pages, int num_pages) 27983d14c5d2SYehuda Sadeh { 27993d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 28003d14c5d2SYehuda Sadeh int rc = 0; 2801b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 28023d14c5d2SYehuda Sadeh 2803acead002SAlex Elder BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ 2804715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 28053d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 280624808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2807acead002SAlex Elder snapc, truncate_seq, truncate_size, 2808153e5167SAlex Elder true); 28096816282dSSage Weil if (IS_ERR(req)) 28106816282dSSage Weil return PTR_ERR(req); 28113d14c5d2SYehuda Sadeh 28123d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 2813406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 281443bfe5deSAlex Elder false, false); 281543bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 28163d14c5d2SYehuda Sadeh 281779528734SAlex Elder ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); 281802ee07d3SAlex Elder 281987f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 28203d14c5d2SYehuda Sadeh if (!rc) 28213d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 28223d14c5d2SYehuda Sadeh 28233d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 28243d14c5d2SYehuda Sadeh if (rc == 0) 28253d14c5d2SYehuda Sadeh rc = len; 28263d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 28273d14c5d2SYehuda Sadeh return rc; 28283d14c5d2SYehuda Sadeh } 28293d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 28303d14c5d2SYehuda Sadeh 28315522ae0bSAlex Elder int ceph_osdc_setup(void) 28325522ae0bSAlex Elder { 28333f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 28343f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 28353f1af42aSIlya Dryomov 28365522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 28373f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 28383f1af42aSIlya Dryomov 0, 0, NULL); 28395522ae0bSAlex Elder 28405522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 28415522ae0bSAlex Elder } 28425522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 28435522ae0bSAlex Elder 28445522ae0bSAlex Elder void ceph_osdc_cleanup(void) 28455522ae0bSAlex Elder { 28465522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 28475522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 28485522ae0bSAlex Elder ceph_osd_request_cache = NULL; 28495522ae0bSAlex Elder } 28505522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 28515522ae0bSAlex Elder 28523d14c5d2SYehuda Sadeh /* 28533d14c5d2SYehuda Sadeh * handle incoming message 28543d14c5d2SYehuda Sadeh */ 28553d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 28563d14c5d2SYehuda Sadeh { 28573d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28583d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 28593d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 28603d14c5d2SYehuda Sadeh 28613d14c5d2SYehuda Sadeh if (!osd) 28623d14c5d2SYehuda Sadeh goto out; 28633d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 28643d14c5d2SYehuda Sadeh 28653d14c5d2SYehuda Sadeh switch (type) { 28663d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 28673d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 28683d14c5d2SYehuda Sadeh break; 28693d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 287070cf052dSShraddha Barke handle_reply(osdc, msg); 28713d14c5d2SYehuda Sadeh break; 2872a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2873a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2874a40c4f10SYehuda Sadeh break; 28753d14c5d2SYehuda Sadeh 28763d14c5d2SYehuda Sadeh default: 28773d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 28783d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 28793d14c5d2SYehuda Sadeh } 28803d14c5d2SYehuda Sadeh out: 28813d14c5d2SYehuda Sadeh ceph_msg_put(msg); 28823d14c5d2SYehuda Sadeh } 28833d14c5d2SYehuda Sadeh 28843d14c5d2SYehuda Sadeh /* 2885d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 2886d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 2887d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 28883d14c5d2SYehuda Sadeh */ 28893d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 28903d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 28913d14c5d2SYehuda Sadeh int *skip) 28923d14c5d2SYehuda Sadeh { 28933d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28943d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 28953d14c5d2SYehuda Sadeh struct ceph_msg *m; 28963d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 28973f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 28983d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 28993d14c5d2SYehuda Sadeh u64 tid; 29003d14c5d2SYehuda Sadeh 29013d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 29023d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 29033d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 29043d14c5d2SYehuda Sadeh if (!req) { 2905cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 2906cd8140c6SIlya Dryomov osd->o_osd, tid); 29073d14c5d2SYehuda Sadeh m = NULL; 2908d15f9d69SIlya Dryomov *skip = 1; 29093d14c5d2SYehuda Sadeh goto out; 29103d14c5d2SYehuda Sadeh } 29113d14c5d2SYehuda Sadeh 29128921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 29133d14c5d2SYehuda Sadeh 2914f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 2915d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 2916d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 2917d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 29183f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 29193f0a4ac5SIlya Dryomov false); 29203d14c5d2SYehuda Sadeh if (!m) 29213d14c5d2SYehuda Sadeh goto out; 29223d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 29233d14c5d2SYehuda Sadeh req->r_reply = m; 29243d14c5d2SYehuda Sadeh } 29253d14c5d2SYehuda Sadeh 2926d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 2927d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 2928d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 2929d15f9d69SIlya Dryomov req->r_reply->data_length); 29303d14c5d2SYehuda Sadeh m = NULL; 2931d15f9d69SIlya Dryomov *skip = 1; 29323d14c5d2SYehuda Sadeh goto out; 29333d14c5d2SYehuda Sadeh } 2934d15f9d69SIlya Dryomov 2935d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 29363d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 29373d14c5d2SYehuda Sadeh 29383d14c5d2SYehuda Sadeh out: 29393d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 29403d14c5d2SYehuda Sadeh return m; 29413d14c5d2SYehuda Sadeh } 29423d14c5d2SYehuda Sadeh 29433d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 29443d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 29453d14c5d2SYehuda Sadeh int *skip) 29463d14c5d2SYehuda Sadeh { 29473d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29483d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 29493d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 29503d14c5d2SYehuda Sadeh 29511c20f2d2SAlex Elder *skip = 0; 29523d14c5d2SYehuda Sadeh switch (type) { 29533d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2954a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2955b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 29563d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 29573d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 29583d14c5d2SYehuda Sadeh default: 29593d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 29603d14c5d2SYehuda Sadeh osd->o_osd); 29613d14c5d2SYehuda Sadeh *skip = 1; 29623d14c5d2SYehuda Sadeh return NULL; 29633d14c5d2SYehuda Sadeh } 29643d14c5d2SYehuda Sadeh } 29653d14c5d2SYehuda Sadeh 29663d14c5d2SYehuda Sadeh /* 29673d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 29683d14c5d2SYehuda Sadeh */ 29693d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 29703d14c5d2SYehuda Sadeh { 29713d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29723d14c5d2SYehuda Sadeh if (get_osd(osd)) 29733d14c5d2SYehuda Sadeh return con; 29743d14c5d2SYehuda Sadeh return NULL; 29753d14c5d2SYehuda Sadeh } 29763d14c5d2SYehuda Sadeh 29773d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 29783d14c5d2SYehuda Sadeh { 29793d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29803d14c5d2SYehuda Sadeh put_osd(osd); 29813d14c5d2SYehuda Sadeh } 29823d14c5d2SYehuda Sadeh 29833d14c5d2SYehuda Sadeh /* 29843d14c5d2SYehuda Sadeh * authentication 29853d14c5d2SYehuda Sadeh */ 2986a3530df3SAlex Elder /* 2987a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2988a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2989a3530df3SAlex Elder */ 2990a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 29918f43fb53SAlex Elder int *proto, int force_new) 29923d14c5d2SYehuda Sadeh { 29933d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 29943d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 29953d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 299674f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 29973d14c5d2SYehuda Sadeh 299874f1869fSAlex Elder if (force_new && auth->authorizer) { 29996c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 300074f1869fSAlex Elder auth->authorizer = NULL; 30013d14c5d2SYehuda Sadeh } 300227859f97SSage Weil if (!auth->authorizer) { 300327859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 3004a3530df3SAlex Elder auth); 30053d14c5d2SYehuda Sadeh if (ret) 3006a3530df3SAlex Elder return ERR_PTR(ret); 300727859f97SSage Weil } else { 300827859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 30090bed9b5cSSage Weil auth); 30100bed9b5cSSage Weil if (ret) 30110bed9b5cSSage Weil return ERR_PTR(ret); 30123d14c5d2SYehuda Sadeh } 30133d14c5d2SYehuda Sadeh *proto = ac->protocol; 301474f1869fSAlex Elder 3015a3530df3SAlex Elder return auth; 30163d14c5d2SYehuda Sadeh } 30173d14c5d2SYehuda Sadeh 30183d14c5d2SYehuda Sadeh 30193d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 30203d14c5d2SYehuda Sadeh { 30213d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 30223d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 30233d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 30243d14c5d2SYehuda Sadeh 302527859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 30263d14c5d2SYehuda Sadeh } 30273d14c5d2SYehuda Sadeh 30283d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 30293d14c5d2SYehuda Sadeh { 30303d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 30313d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 30323d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 30333d14c5d2SYehuda Sadeh 303427859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 30353d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 30363d14c5d2SYehuda Sadeh } 30373d14c5d2SYehuda Sadeh 303879dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 303933d07337SYan, Zheng { 304079dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 304133d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 304279dbd1baSIlya Dryomov 304333d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 304433d07337SYan, Zheng } 304533d07337SYan, Zheng 304679dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 304733d07337SYan, Zheng { 304879dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 304933d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 305079dbd1baSIlya Dryomov 305133d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 305233d07337SYan, Zheng } 305333d07337SYan, Zheng 30543d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 30553d14c5d2SYehuda Sadeh .get = get_osd_con, 30563d14c5d2SYehuda Sadeh .put = put_osd_con, 30573d14c5d2SYehuda Sadeh .dispatch = dispatch, 30583d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 30593d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 30603d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 30613d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 306279dbd1baSIlya Dryomov .sign_message = osd_sign_message, 306379dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 30643d14c5d2SYehuda Sadeh .fault = osd_reset, 30653d14c5d2SYehuda Sadeh }; 3066