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 3373d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 3383d14c5d2SYehuda Sadeh if (req->r_mempool) 3393d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 3403f1af42aSIlya Dryomov else if (req->r_num_ops <= CEPH_OSD_SLAB_OPS) 3415522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 3423f1af42aSIlya Dryomov else 3433f1af42aSIlya Dryomov kfree(req); 3443d14c5d2SYehuda Sadeh } 3459e94af20SIlya Dryomov 3469e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 3479e94af20SIlya Dryomov { 3489e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3499e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3509e94af20SIlya Dryomov kref_get(&req->r_kref); 3519e94af20SIlya Dryomov } 3529e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 3539e94af20SIlya Dryomov 3549e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 3559e94af20SIlya Dryomov { 3563ed97d63SIlya Dryomov if (req) { 3579e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3589e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3599e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 3609e94af20SIlya Dryomov } 3613ed97d63SIlya Dryomov } 3629e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 3633d14c5d2SYehuda Sadeh 3643d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 3653d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 3661b83bef2SSage Weil unsigned int num_ops, 3673d14c5d2SYehuda Sadeh bool use_mempool, 36854a54007SAlex Elder gfp_t gfp_flags) 3693d14c5d2SYehuda Sadeh { 3703d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 3713d14c5d2SYehuda Sadeh 3723d14c5d2SYehuda Sadeh if (use_mempool) { 3733f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_SLAB_OPS); 3743d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 3753f1af42aSIlya Dryomov } else if (num_ops <= CEPH_OSD_SLAB_OPS) { 3763f1af42aSIlya Dryomov req = kmem_cache_alloc(ceph_osd_request_cache, gfp_flags); 3773d14c5d2SYehuda Sadeh } else { 3783f1af42aSIlya Dryomov BUG_ON(num_ops > CEPH_OSD_MAX_OPS); 3793f1af42aSIlya Dryomov req = kmalloc(sizeof(*req) + num_ops * sizeof(req->r_ops[0]), 3803f1af42aSIlya Dryomov gfp_flags); 3813d14c5d2SYehuda Sadeh } 3823f1af42aSIlya Dryomov if (unlikely(!req)) 3833d14c5d2SYehuda Sadeh return NULL; 3843d14c5d2SYehuda Sadeh 3853f1af42aSIlya Dryomov /* req only, each op is zeroed in _osd_req_op_init() */ 3863f1af42aSIlya Dryomov memset(req, 0, sizeof(*req)); 3873f1af42aSIlya Dryomov 3883d14c5d2SYehuda Sadeh req->r_osdc = osdc; 3893d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 39079528734SAlex Elder req->r_num_ops = num_ops; 39184127282SIlya Dryomov req->r_snapid = CEPH_NOSNAP; 39284127282SIlya Dryomov req->r_snapc = ceph_get_snap_context(snapc); 3933d14c5d2SYehuda Sadeh 3943d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 3953d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 3963d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 397a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 3983d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 399a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 4001d0326b1SIlya Dryomov INIT_LIST_HEAD(&req->r_linger_osd_item); 401935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 402cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 403cd43045cSSage Weil 4043c972c95SIlya Dryomov req->r_base_oloc.pool = -1; 405205ee118SIlya Dryomov req->r_target_oloc.pool = -1; 40622116525SIlya Dryomov 40713d1ad16SIlya Dryomov dout("%s req %p\n", __func__, req); 40813d1ad16SIlya Dryomov return req; 4093f1af42aSIlya Dryomov } 41013d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_request); 4113f1af42aSIlya Dryomov 41213d1ad16SIlya Dryomov int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp) 41313d1ad16SIlya Dryomov { 41413d1ad16SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 41513d1ad16SIlya Dryomov struct ceph_msg *msg; 41613d1ad16SIlya Dryomov int msg_size; 4173d14c5d2SYehuda Sadeh 41813d1ad16SIlya Dryomov /* create request message */ 419ae458f5aSIlya Dryomov msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */ 420ae458f5aSIlya Dryomov msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */ 421ae458f5aSIlya Dryomov msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 422ae458f5aSIlya Dryomov msg_size += 1 + 8 + 4 + 4; /* pgid */ 42313d1ad16SIlya Dryomov msg_size += 4 + req->r_base_oid.name_len; /* oid */ 42413d1ad16SIlya Dryomov msg_size += 2 + req->r_num_ops * sizeof(struct ceph_osd_op); 425ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 426ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 42713d1ad16SIlya Dryomov msg_size += 4 + 8 * (req->r_snapc ? req->r_snapc->num_snaps : 0); 428ae458f5aSIlya Dryomov msg_size += 4; /* retry_attempt */ 429ae458f5aSIlya Dryomov 43013d1ad16SIlya Dryomov if (req->r_mempool) 4313d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 4323d14c5d2SYehuda Sadeh else 43313d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp, true); 43413d1ad16SIlya Dryomov if (!msg) 43513d1ad16SIlya Dryomov return -ENOMEM; 4363d14c5d2SYehuda Sadeh 4373d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 4383d14c5d2SYehuda Sadeh req->r_request = msg; 4393d14c5d2SYehuda Sadeh 44013d1ad16SIlya Dryomov /* create reply message */ 44113d1ad16SIlya Dryomov msg_size = OSD_OPREPLY_FRONT_LEN; 442711da55dSIlya Dryomov msg_size += req->r_base_oid.name_len; 443711da55dSIlya Dryomov msg_size += req->r_num_ops * sizeof(struct ceph_osd_op); 44413d1ad16SIlya Dryomov 44513d1ad16SIlya Dryomov if (req->r_mempool) 44613d1ad16SIlya Dryomov msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 44713d1ad16SIlya Dryomov else 44813d1ad16SIlya Dryomov msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, msg_size, gfp, true); 44913d1ad16SIlya Dryomov if (!msg) 45013d1ad16SIlya Dryomov return -ENOMEM; 45113d1ad16SIlya Dryomov 45213d1ad16SIlya Dryomov req->r_reply = msg; 45313d1ad16SIlya Dryomov 45413d1ad16SIlya Dryomov return 0; 45513d1ad16SIlya Dryomov } 45613d1ad16SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_alloc_messages); 4573d14c5d2SYehuda Sadeh 458a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 459a8dd0a37SAlex Elder { 460a8dd0a37SAlex Elder switch (opcode) { 46170b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 46270b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 46370b5bfa3SIlya Dryomov #undef GENERATE_CASE 464a8dd0a37SAlex Elder default: 465a8dd0a37SAlex Elder return false; 466a8dd0a37SAlex Elder } 467a8dd0a37SAlex Elder } 468a8dd0a37SAlex Elder 46933803f33SAlex Elder /* 47033803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 47133803f33SAlex Elder * other information associated with them. It also serves as a 47233803f33SAlex Elder * common init routine for all the other init functions, below. 47333803f33SAlex Elder */ 474c99d2d4aSAlex Elder static struct ceph_osd_req_op * 47549719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 476144cba14SYan, Zheng u16 opcode, u32 flags) 47733803f33SAlex Elder { 478c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 479c99d2d4aSAlex Elder 480c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 48133803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 48233803f33SAlex Elder 483c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 48433803f33SAlex Elder memset(op, 0, sizeof (*op)); 48533803f33SAlex Elder op->op = opcode; 486144cba14SYan, Zheng op->flags = flags; 487c99d2d4aSAlex Elder 488c99d2d4aSAlex Elder return op; 48933803f33SAlex Elder } 49033803f33SAlex Elder 49149719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 492144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 49349719778SAlex Elder { 494144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 49549719778SAlex Elder } 49649719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 49749719778SAlex Elder 498c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 499c99d2d4aSAlex Elder unsigned int which, u16 opcode, 50033803f33SAlex Elder u64 offset, u64 length, 50133803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 50233803f33SAlex Elder { 503144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 504144cba14SYan, Zheng opcode, 0); 50533803f33SAlex Elder size_t payload_len = 0; 50633803f33SAlex Elder 507ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 508e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 509e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 51033803f33SAlex Elder 51133803f33SAlex Elder op->extent.offset = offset; 51233803f33SAlex Elder op->extent.length = length; 51333803f33SAlex Elder op->extent.truncate_size = truncate_size; 51433803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 515e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 51633803f33SAlex Elder payload_len += length; 51733803f33SAlex Elder 518de2aa102SIlya Dryomov op->indata_len = payload_len; 51933803f33SAlex Elder } 52033803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 52133803f33SAlex Elder 522c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 523c99d2d4aSAlex Elder unsigned int which, u64 length) 524e5975c7cSAlex Elder { 525c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 526c99d2d4aSAlex Elder u64 previous; 527c99d2d4aSAlex Elder 528c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 529c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 530c99d2d4aSAlex Elder previous = op->extent.length; 531e5975c7cSAlex Elder 532e5975c7cSAlex Elder if (length == previous) 533e5975c7cSAlex Elder return; /* Nothing to do */ 534e5975c7cSAlex Elder BUG_ON(length > previous); 535e5975c7cSAlex Elder 536e5975c7cSAlex Elder op->extent.length = length; 537de2aa102SIlya Dryomov op->indata_len -= previous - length; 538e5975c7cSAlex Elder } 539e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 540e5975c7cSAlex Elder 5412c63f49aSYan, Zheng void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req, 5422c63f49aSYan, Zheng unsigned int which, u64 offset_inc) 5432c63f49aSYan, Zheng { 5442c63f49aSYan, Zheng struct ceph_osd_req_op *op, *prev_op; 5452c63f49aSYan, Zheng 5462c63f49aSYan, Zheng BUG_ON(which + 1 >= osd_req->r_num_ops); 5472c63f49aSYan, Zheng 5482c63f49aSYan, Zheng prev_op = &osd_req->r_ops[which]; 5492c63f49aSYan, Zheng op = _osd_req_op_init(osd_req, which + 1, prev_op->op, prev_op->flags); 5502c63f49aSYan, Zheng /* dup previous one */ 5512c63f49aSYan, Zheng op->indata_len = prev_op->indata_len; 5522c63f49aSYan, Zheng op->outdata_len = prev_op->outdata_len; 5532c63f49aSYan, Zheng op->extent = prev_op->extent; 5542c63f49aSYan, Zheng /* adjust offset */ 5552c63f49aSYan, Zheng op->extent.offset += offset_inc; 5562c63f49aSYan, Zheng op->extent.length -= offset_inc; 5572c63f49aSYan, Zheng 5582c63f49aSYan, Zheng if (op->op == CEPH_OSD_OP_WRITE || op->op == CEPH_OSD_OP_WRITEFULL) 5592c63f49aSYan, Zheng op->indata_len -= offset_inc; 5602c63f49aSYan, Zheng } 5612c63f49aSYan, Zheng EXPORT_SYMBOL(osd_req_op_extent_dup_last); 5622c63f49aSYan, Zheng 563c99d2d4aSAlex Elder void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 56404017e29SAlex Elder u16 opcode, const char *class, const char *method) 56533803f33SAlex Elder { 566144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 567144cba14SYan, Zheng opcode, 0); 5685f562df5SAlex Elder struct ceph_pagelist *pagelist; 56933803f33SAlex Elder size_t payload_len = 0; 57033803f33SAlex Elder size_t size; 57133803f33SAlex Elder 57233803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 57333803f33SAlex Elder 5745f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 5755f562df5SAlex Elder BUG_ON(!pagelist); 5765f562df5SAlex Elder ceph_pagelist_init(pagelist); 5775f562df5SAlex Elder 57833803f33SAlex Elder op->cls.class_name = class; 57933803f33SAlex Elder size = strlen(class); 58033803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 58133803f33SAlex Elder op->cls.class_len = size; 5825f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 58333803f33SAlex Elder payload_len += size; 58433803f33SAlex Elder 58533803f33SAlex Elder op->cls.method_name = method; 58633803f33SAlex Elder size = strlen(method); 58733803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 58833803f33SAlex Elder op->cls.method_len = size; 5895f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 59033803f33SAlex Elder payload_len += size; 59133803f33SAlex Elder 592a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 5935f562df5SAlex Elder 59433803f33SAlex Elder op->cls.argc = 0; /* currently unused */ 59533803f33SAlex Elder 596de2aa102SIlya Dryomov op->indata_len = payload_len; 59733803f33SAlex Elder } 59833803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 5998c042b0dSAlex Elder 600d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 601d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 602d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 603d74b50beSYan, Zheng { 604144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 605144cba14SYan, Zheng opcode, 0); 606d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 607d74b50beSYan, Zheng size_t payload_len; 608d74b50beSYan, Zheng 609d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 610d74b50beSYan, Zheng 611d74b50beSYan, Zheng pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); 612d74b50beSYan, Zheng if (!pagelist) 613d74b50beSYan, Zheng return -ENOMEM; 614d74b50beSYan, Zheng 615d74b50beSYan, Zheng ceph_pagelist_init(pagelist); 616d74b50beSYan, Zheng 617d74b50beSYan, Zheng payload_len = strlen(name); 618d74b50beSYan, Zheng op->xattr.name_len = payload_len; 619d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 620d74b50beSYan, Zheng 621d74b50beSYan, Zheng op->xattr.value_len = size; 622d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 623d74b50beSYan, Zheng payload_len += size; 624d74b50beSYan, Zheng 625d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 626d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 627d74b50beSYan, Zheng 628d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 629de2aa102SIlya Dryomov op->indata_len = payload_len; 630d74b50beSYan, Zheng return 0; 631d74b50beSYan, Zheng } 632d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 633d74b50beSYan, Zheng 634c99d2d4aSAlex Elder void osd_req_op_watch_init(struct ceph_osd_request *osd_req, 635c99d2d4aSAlex Elder unsigned int which, u16 opcode, 63633803f33SAlex Elder u64 cookie, u64 version, int flag) 63733803f33SAlex Elder { 638144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 639144cba14SYan, Zheng opcode, 0); 64033803f33SAlex Elder 641c99d2d4aSAlex Elder BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 64233803f33SAlex Elder 64333803f33SAlex Elder op->watch.cookie = cookie; 6449ef1ee5aSAlex Elder op->watch.ver = version; 64533803f33SAlex Elder if (opcode == CEPH_OSD_OP_WATCH && flag) 64633803f33SAlex Elder op->watch.flag = (u8)1; 64733803f33SAlex Elder } 64833803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_watch_init); 64933803f33SAlex Elder 650c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 651c647b8a8SIlya Dryomov unsigned int which, 652c647b8a8SIlya Dryomov u64 expected_object_size, 653c647b8a8SIlya Dryomov u64 expected_write_size) 654c647b8a8SIlya Dryomov { 655c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 656144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 657144cba14SYan, Zheng 0); 658c647b8a8SIlya Dryomov 659c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 660c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 661c647b8a8SIlya Dryomov 662c647b8a8SIlya Dryomov /* 663c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 664c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 665c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 666c647b8a8SIlya Dryomov */ 667c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 668c647b8a8SIlya Dryomov } 669c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 670c647b8a8SIlya Dryomov 67190af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 672ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 673ec9123c5SAlex Elder { 674ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 675ec9123c5SAlex Elder 676ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 677ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 678ec9123c5SAlex Elder if (length) 67990af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 680ec9123c5SAlex Elder length, osd_data->alignment); 681ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 682ec9123c5SAlex Elder BUG_ON(!length); 68390af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 684ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 685ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 68690af3602SAlex Elder ceph_msg_data_add_bio(msg, osd_data->bio, length); 687ec9123c5SAlex Elder #endif 688ec9123c5SAlex Elder } else { 689ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 690ec9123c5SAlex Elder } 691ec9123c5SAlex Elder } 692ec9123c5SAlex Elder 693175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 69479528734SAlex Elder struct ceph_osd_op *dst, unsigned int which) 6953d14c5d2SYehuda Sadeh { 69679528734SAlex Elder struct ceph_osd_req_op *src; 69704017e29SAlex Elder struct ceph_osd_data *osd_data; 69854d50649SAlex Elder u64 request_data_len = 0; 69904017e29SAlex Elder u64 data_length; 700175face2SAlex Elder 70179528734SAlex Elder BUG_ON(which >= req->r_num_ops); 70279528734SAlex Elder src = &req->r_ops[which]; 703a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 704a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 705a8dd0a37SAlex Elder 706a8dd0a37SAlex Elder return 0; 707a8dd0a37SAlex Elder } 7083d14c5d2SYehuda Sadeh 709065a68f9SAlex Elder switch (src->op) { 710fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 71149719778SAlex Elder osd_data = &src->raw_data_in; 71249719778SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 713fbfab539SAlex Elder break; 7143d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 7153d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 716e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 717ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 718ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 719e30b7577SIlya Dryomov if (src->op == CEPH_OSD_OP_WRITE || 720e30b7577SIlya Dryomov src->op == CEPH_OSD_OP_WRITEFULL) 72154d50649SAlex Elder request_data_len = src->extent.length; 722175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 723175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 7243d14c5d2SYehuda Sadeh dst->extent.truncate_size = 7253d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 7263d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 7273d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 72804017e29SAlex Elder osd_data = &src->extent.osd_data; 729e30b7577SIlya Dryomov if (src->op == CEPH_OSD_OP_WRITE || 730e30b7577SIlya Dryomov src->op == CEPH_OSD_OP_WRITEFULL) 73104017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 7325476492fSAlex Elder else 73304017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 7343d14c5d2SYehuda Sadeh break; 7353d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 7363d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 7373d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 73804017e29SAlex Elder osd_data = &src->cls.request_info; 73904017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 74004017e29SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); 74104017e29SAlex Elder request_data_len = osd_data->pagelist->length; 74204017e29SAlex Elder 74304017e29SAlex Elder osd_data = &src->cls.request_data; 74404017e29SAlex Elder data_length = ceph_osd_data_length(osd_data); 74504017e29SAlex Elder if (data_length) { 74604017e29SAlex Elder BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); 74704017e29SAlex Elder dst->cls.indata_len = cpu_to_le32(data_length); 74804017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 749de2aa102SIlya Dryomov src->indata_len += data_length; 75004017e29SAlex Elder request_data_len += data_length; 75104017e29SAlex Elder } 75204017e29SAlex Elder osd_data = &src->cls.response_data; 75304017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 7543d14c5d2SYehuda Sadeh break; 7553d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 7563d14c5d2SYehuda Sadeh break; 757a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 758a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 759a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 760a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 761a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 762a40c4f10SYehuda Sadeh break; 763c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 764c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 765c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 766c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 767c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 768c647b8a8SIlya Dryomov break; 769d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 770d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 771d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 772d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 773d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 774d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 775d74b50beSYan, Zheng osd_data = &src->xattr.osd_data; 776d74b50beSYan, Zheng ceph_osdc_msg_data_add(req->r_request, osd_data); 777d74b50beSYan, Zheng request_data_len = osd_data->pagelist->length; 778d74b50beSYan, Zheng break; 779864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 780864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 781864e9197SYan, Zheng break; 7823d14c5d2SYehuda Sadeh default: 7834c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 7848f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 7854c46459cSAlex Elder WARN_ON(1); 786a8dd0a37SAlex Elder 787a8dd0a37SAlex Elder return 0; 7883d14c5d2SYehuda Sadeh } 7897b25bf5fSIlya Dryomov 790a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 7917b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 792de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 793175face2SAlex Elder 79454d50649SAlex Elder return request_data_len; 7953d14c5d2SYehuda Sadeh } 7963d14c5d2SYehuda Sadeh 7973d14c5d2SYehuda Sadeh /* 7983d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 7993d14c5d2SYehuda Sadeh * extent as needed. 8003d14c5d2SYehuda Sadeh * 8013d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 8023d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 8033d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 8043d14c5d2SYehuda Sadeh * 8053d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 8063d14c5d2SYehuda Sadeh * data quickly. 8073d14c5d2SYehuda Sadeh */ 8083d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 8093d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 8103d14c5d2SYehuda Sadeh struct ceph_vino vino, 811715e4cd4SYan, Zheng u64 off, u64 *plen, 812715e4cd4SYan, Zheng unsigned int which, int num_ops, 8133d14c5d2SYehuda Sadeh int opcode, int flags, 8143d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 8153d14c5d2SYehuda Sadeh u32 truncate_seq, 8163d14c5d2SYehuda Sadeh u64 truncate_size, 817153e5167SAlex Elder bool use_mempool) 8183d14c5d2SYehuda Sadeh { 8193d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 82075d1c941SAlex Elder u64 objnum = 0; 82175d1c941SAlex Elder u64 objoff = 0; 82275d1c941SAlex Elder u64 objlen = 0; 8236816282dSSage Weil int r; 8243d14c5d2SYehuda Sadeh 825ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 826864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 827864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 8283d14c5d2SYehuda Sadeh 829acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 830ae7ca4a3SAlex Elder GFP_NOFS); 83113d1ad16SIlya Dryomov if (!req) { 83213d1ad16SIlya Dryomov r = -ENOMEM; 83313d1ad16SIlya Dryomov goto fail; 83413d1ad16SIlya Dryomov } 83579528734SAlex Elder 836d178a9e7SAlex Elder req->r_flags = flags; 8373d14c5d2SYehuda Sadeh 8383d14c5d2SYehuda Sadeh /* calculate max write size */ 839a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 84013d1ad16SIlya Dryomov if (r) 84113d1ad16SIlya Dryomov goto fail; 842a19dadfbSAlex Elder 843864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 844144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 845864e9197SYan, Zheng } else { 846864e9197SYan, Zheng u32 object_size = le32_to_cpu(layout->fl_object_size); 847864e9197SYan, Zheng u32 object_base = off - objoff; 848ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 849d18d1e28SAlex Elder if (truncate_size <= object_base) { 850d18d1e28SAlex Elder truncate_size = 0; 851d18d1e28SAlex Elder } else { 852d18d1e28SAlex Elder truncate_size -= object_base; 853d18d1e28SAlex Elder if (truncate_size > object_size) 854d18d1e28SAlex Elder truncate_size = object_size; 855d18d1e28SAlex Elder } 856ccca4e37SYan, Zheng } 857715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 858b0270324SAlex Elder truncate_size, truncate_seq); 859864e9197SYan, Zheng } 860d18d1e28SAlex Elder 8613c972c95SIlya Dryomov req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); 8623d14c5d2SYehuda Sadeh 8633c972c95SIlya Dryomov snprintf(req->r_base_oid.name, sizeof(req->r_base_oid.name), 8644295f221SIlya Dryomov "%llx.%08llx", vino.ino, objnum); 8653c972c95SIlya Dryomov req->r_base_oid.name_len = strlen(req->r_base_oid.name); 866dbe0fc41SAlex Elder 86713d1ad16SIlya Dryomov r = ceph_osdc_alloc_messages(req, GFP_NOFS); 86813d1ad16SIlya Dryomov if (r) 86913d1ad16SIlya Dryomov goto fail; 87013d1ad16SIlya Dryomov 8713d14c5d2SYehuda Sadeh return req; 87213d1ad16SIlya Dryomov 87313d1ad16SIlya Dryomov fail: 87413d1ad16SIlya Dryomov ceph_osdc_put_request(req); 87513d1ad16SIlya Dryomov return ERR_PTR(r); 8763d14c5d2SYehuda Sadeh } 8773d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 8783d14c5d2SYehuda Sadeh 8793d14c5d2SYehuda Sadeh /* 8803d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 8813d14c5d2SYehuda Sadeh */ 8823d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 8833d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 8843d14c5d2SYehuda Sadeh { 8853d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 8863d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 8873d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 8883d14c5d2SYehuda Sadeh 8893d14c5d2SYehuda Sadeh while (*p) { 8903d14c5d2SYehuda Sadeh parent = *p; 8913d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 8923d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 8933d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 8943d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 8953d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 8963d14c5d2SYehuda Sadeh else 8973d14c5d2SYehuda Sadeh BUG(); 8983d14c5d2SYehuda Sadeh } 8993d14c5d2SYehuda Sadeh 9003d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 9013d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 9023d14c5d2SYehuda Sadeh } 9033d14c5d2SYehuda Sadeh 9043d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 9053d14c5d2SYehuda Sadeh u64 tid) 9063d14c5d2SYehuda Sadeh { 9073d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 9083d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 9093d14c5d2SYehuda Sadeh 9103d14c5d2SYehuda Sadeh while (n) { 9113d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 9123d14c5d2SYehuda Sadeh if (tid < req->r_tid) 9133d14c5d2SYehuda Sadeh n = n->rb_left; 9143d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 9153d14c5d2SYehuda Sadeh n = n->rb_right; 9163d14c5d2SYehuda Sadeh else 9173d14c5d2SYehuda Sadeh return req; 9183d14c5d2SYehuda Sadeh } 9193d14c5d2SYehuda Sadeh return NULL; 9203d14c5d2SYehuda Sadeh } 9213d14c5d2SYehuda Sadeh 9223d14c5d2SYehuda Sadeh static struct ceph_osd_request * 9233d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 9243d14c5d2SYehuda Sadeh u64 tid) 9253d14c5d2SYehuda Sadeh { 9263d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 9273d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 9283d14c5d2SYehuda Sadeh 9293d14c5d2SYehuda Sadeh while (n) { 9303d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 9313d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 9323d14c5d2SYehuda Sadeh if (!n->rb_left) 9333d14c5d2SYehuda Sadeh return req; 9343d14c5d2SYehuda Sadeh n = n->rb_left; 9353d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 9363d14c5d2SYehuda Sadeh n = n->rb_right; 9373d14c5d2SYehuda Sadeh } else { 9383d14c5d2SYehuda Sadeh return req; 9393d14c5d2SYehuda Sadeh } 9403d14c5d2SYehuda Sadeh } 9413d14c5d2SYehuda Sadeh return NULL; 9423d14c5d2SYehuda Sadeh } 9433d14c5d2SYehuda Sadeh 9442cc6128aSIlya Dryomov static void __kick_linger_request(struct ceph_osd_request *req) 9452cc6128aSIlya Dryomov { 9462cc6128aSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 9472cc6128aSIlya Dryomov struct ceph_osd *osd = req->r_osd; 9482cc6128aSIlya Dryomov 9492cc6128aSIlya Dryomov /* 9502cc6128aSIlya Dryomov * Linger requests need to be resent with a new tid to avoid 9512cc6128aSIlya Dryomov * the dup op detection logic on the OSDs. Achieve this with 9522cc6128aSIlya Dryomov * a re-register dance instead of open-coding. 9532cc6128aSIlya Dryomov */ 9542cc6128aSIlya Dryomov ceph_osdc_get_request(req); 9552cc6128aSIlya Dryomov if (!list_empty(&req->r_linger_item)) 9562cc6128aSIlya Dryomov __unregister_linger_request(osdc, req); 9572cc6128aSIlya Dryomov else 9582cc6128aSIlya Dryomov __unregister_request(osdc, req); 9592cc6128aSIlya Dryomov __register_request(osdc, req); 9602cc6128aSIlya Dryomov ceph_osdc_put_request(req); 9612cc6128aSIlya Dryomov 9622cc6128aSIlya Dryomov /* 9632cc6128aSIlya Dryomov * Unless request has been registered as both normal and 9642cc6128aSIlya Dryomov * lingering, __unregister{,_linger}_request clears r_osd. 9652cc6128aSIlya Dryomov * However, here we need to preserve r_osd to make sure we 9662cc6128aSIlya Dryomov * requeue on the same OSD. 9672cc6128aSIlya Dryomov */ 9682cc6128aSIlya Dryomov WARN_ON(req->r_osd || !osd); 9692cc6128aSIlya Dryomov req->r_osd = osd; 9702cc6128aSIlya Dryomov 9712cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, req->r_tid); 9722cc6128aSIlya Dryomov __enqueue_request(req); 9732cc6128aSIlya Dryomov } 9742cc6128aSIlya Dryomov 9756f6c7006SSage Weil /* 9766f6c7006SSage Weil * Resubmit requests pending on the given osd. 9776f6c7006SSage Weil */ 9786f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 9796f6c7006SSage Weil struct ceph_osd *osd) 9806f6c7006SSage Weil { 981a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 982e02493c0SAlex Elder LIST_HEAD(resend); 9832cc6128aSIlya Dryomov LIST_HEAD(resend_linger); 9846f6c7006SSage Weil int err; 9856f6c7006SSage Weil 9862cc6128aSIlya Dryomov dout("%s osd%d\n", __func__, osd->o_osd); 9876f6c7006SSage Weil err = __reset_osd(osdc, osd); 988685a7555SAlex Elder if (err) 9896f6c7006SSage Weil return; 9902cc6128aSIlya Dryomov 991e02493c0SAlex Elder /* 992e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 993e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 994e02493c0SAlex Elder * sent in tid order, and that is also the order they're 995e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 996e02493c0SAlex Elder * flight will be found first, followed by all requests that 997e02493c0SAlex Elder * have not yet been sent. And to resend requests while 998e02493c0SAlex Elder * preserving this order we will want to put any sent 999e02493c0SAlex Elder * requests back on the front of the osd client's unsent 1000e02493c0SAlex Elder * list. 1001e02493c0SAlex Elder * 1002e02493c0SAlex Elder * So we build a separate ordered list of already-sent 1003e02493c0SAlex Elder * requests for the affected osd and splice it onto the 1004e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 1005e02493c0SAlex Elder * request that has not yet been sent we're done. Those 1006e02493c0SAlex Elder * requests are already sitting right where they belong. 1007e02493c0SAlex Elder */ 10086f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 1009e02493c0SAlex Elder if (!req->r_sent) 1010e02493c0SAlex Elder break; 10112cc6128aSIlya Dryomov 10122cc6128aSIlya Dryomov if (!req->r_linger) { 10132cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, 10142cc6128aSIlya Dryomov req->r_tid); 1015e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 10166f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 10172cc6128aSIlya Dryomov } else { 10182cc6128aSIlya Dryomov list_move_tail(&req->r_req_lru_item, &resend_linger); 10192cc6128aSIlya Dryomov } 10206f6c7006SSage Weil } 1021e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 1022a40c4f10SYehuda Sadeh 1023e02493c0SAlex Elder /* 10242cc6128aSIlya Dryomov * Both registered and not yet registered linger requests are 10252cc6128aSIlya Dryomov * enqueued with a new tid on the same OSD. We add/move them 10262cc6128aSIlya Dryomov * to req_unsent/o_requests at the end to keep things in tid 10272cc6128aSIlya Dryomov * order. 1028e02493c0SAlex Elder */ 1029a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 10301d0326b1SIlya Dryomov r_linger_osd_item) { 10312cc6128aSIlya Dryomov WARN_ON(!list_empty(&req->r_req_lru_item)); 10322cc6128aSIlya Dryomov __kick_linger_request(req); 1033a40c4f10SYehuda Sadeh } 10342cc6128aSIlya Dryomov 10352cc6128aSIlya Dryomov list_for_each_entry_safe(req, nreq, &resend_linger, r_req_lru_item) 10362cc6128aSIlya Dryomov __kick_linger_request(req); 10376f6c7006SSage Weil } 10386f6c7006SSage Weil 10393d14c5d2SYehuda Sadeh /* 10403d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 10413d14c5d2SYehuda Sadeh */ 10423d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 10433d14c5d2SYehuda Sadeh { 10443d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 10453d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 10463d14c5d2SYehuda Sadeh 10473d14c5d2SYehuda Sadeh if (!osd) 10483d14c5d2SYehuda Sadeh return; 10493d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 10503d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 10513d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 105283aff95eSSage Weil mutex_lock(&osdc->request_mutex); 105383aff95eSSage Weil __kick_osd_requests(osdc, osd); 1054f9d25199SAlex Elder __send_queued(osdc); 105583aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 10563d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 10573d14c5d2SYehuda Sadeh } 10583d14c5d2SYehuda Sadeh 10593d14c5d2SYehuda Sadeh /* 10603d14c5d2SYehuda Sadeh * Track open sessions with osds. 10613d14c5d2SYehuda Sadeh */ 1062e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 10633d14c5d2SYehuda Sadeh { 10643d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10653d14c5d2SYehuda Sadeh 10663d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 10673d14c5d2SYehuda Sadeh if (!osd) 10683d14c5d2SYehuda Sadeh return NULL; 10693d14c5d2SYehuda Sadeh 10703d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 10713d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1072e10006f8SAlex Elder osd->o_osd = onum; 1073f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 10743d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 1075a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 10763d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 10773d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 10783d14c5d2SYehuda Sadeh 1079b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 10803d14c5d2SYehuda Sadeh 10813d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 10823d14c5d2SYehuda Sadeh return osd; 10833d14c5d2SYehuda Sadeh } 10843d14c5d2SYehuda Sadeh 10853d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 10863d14c5d2SYehuda Sadeh { 10873d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 10883d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 10893d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 10903d14c5d2SYehuda Sadeh return osd; 10913d14c5d2SYehuda Sadeh } else { 10923d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 10933d14c5d2SYehuda Sadeh return NULL; 10943d14c5d2SYehuda Sadeh } 10953d14c5d2SYehuda Sadeh } 10963d14c5d2SYehuda Sadeh 10973d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 10983d14c5d2SYehuda Sadeh { 10993d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 11003d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 1101b28ec2f3SIlya Dryomov if (atomic_dec_and_test(&osd->o_ref)) { 1102b28ec2f3SIlya Dryomov if (osd->o_auth.authorizer) 11036c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(osd->o_auth.authorizer); 11043d14c5d2SYehuda Sadeh kfree(osd); 11053d14c5d2SYehuda Sadeh } 11063d14c5d2SYehuda Sadeh } 11073d14c5d2SYehuda Sadeh 11083d14c5d2SYehuda Sadeh /* 11093d14c5d2SYehuda Sadeh * remove an osd from our map 11103d14c5d2SYehuda Sadeh */ 11113d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 11123d14c5d2SYehuda Sadeh { 11137eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 1114cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_requests)); 1115cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_linger_requests)); 11167c6e6fc5SIlya Dryomov 11173d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 11187eb71e03SIlya Dryomov rb_erase(&osd->o_node, &osdc->osds); 11197eb71e03SIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 11207eb71e03SIlya Dryomov } 11217eb71e03SIlya Dryomov 11227eb71e03SIlya Dryomov static void remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 11237eb71e03SIlya Dryomov { 11247eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 11257eb71e03SIlya Dryomov 11267eb71e03SIlya Dryomov if (!RB_EMPTY_NODE(&osd->o_node)) { 11273d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 11287eb71e03SIlya Dryomov __remove_osd(osdc, osd); 11293d14c5d2SYehuda Sadeh put_osd(osd); 11303d14c5d2SYehuda Sadeh } 11317eb71e03SIlya Dryomov } 11323d14c5d2SYehuda Sadeh 1133aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 1134aca420bcSSage Weil { 1135048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 1136aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 1137aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 1138aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 1139aca420bcSSage Weil struct ceph_osd, o_node); 11407eb71e03SIlya Dryomov remove_osd(osdc, osd); 1141aca420bcSSage Weil } 1142aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 1143aca420bcSSage Weil } 1144aca420bcSSage Weil 11453d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 11463d14c5d2SYehuda Sadeh struct ceph_osd *osd) 11473d14c5d2SYehuda Sadeh { 1148bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 11493d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1150bbf37ec3SIlya Dryomov 11513d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 1152a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 11533d14c5d2SYehuda Sadeh } 11543d14c5d2SYehuda Sadeh 1155bbf37ec3SIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd_client *osdc, 1156bbf37ec3SIlya Dryomov struct ceph_osd *osd) 1157bbf37ec3SIlya Dryomov { 1158bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 1159bbf37ec3SIlya Dryomov 1160bbf37ec3SIlya Dryomov if (list_empty(&osd->o_requests) && 1161bbf37ec3SIlya Dryomov list_empty(&osd->o_linger_requests)) 1162bbf37ec3SIlya Dryomov __move_osd_to_lru(osdc, osd); 1163bbf37ec3SIlya Dryomov } 1164bbf37ec3SIlya Dryomov 11653d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 11663d14c5d2SYehuda Sadeh { 11673d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 11683d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 11693d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 11703d14c5d2SYehuda Sadeh } 11713d14c5d2SYehuda Sadeh 1172aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 11733d14c5d2SYehuda Sadeh { 11743d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 11753d14c5d2SYehuda Sadeh 11763d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 11773d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 11783d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 1179aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 11803d14c5d2SYehuda Sadeh break; 11817eb71e03SIlya Dryomov remove_osd(osdc, osd); 11823d14c5d2SYehuda Sadeh } 11833d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 11843d14c5d2SYehuda Sadeh } 11853d14c5d2SYehuda Sadeh 11863d14c5d2SYehuda Sadeh /* 11873d14c5d2SYehuda Sadeh * reset osd connect 11883d14c5d2SYehuda Sadeh */ 11893d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 11903d14c5d2SYehuda Sadeh { 1191c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 11923d14c5d2SYehuda Sadeh 11933d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 1194a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 1195a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 11967eb71e03SIlya Dryomov remove_osd(osdc, osd); 1197c3acb181SAlex Elder return -ENODEV; 1198c3acb181SAlex Elder } 1199c3acb181SAlex Elder 1200c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 1201c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 12023d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 1203c3acb181SAlex Elder struct ceph_osd_request *req; 1204c3acb181SAlex Elder 12053d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 12060b4af2e8SIlya Dryomov "letting msgr retry\n"); 12073d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 12083d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 12093d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1210c3acb181SAlex Elder 1211c3acb181SAlex Elder return -EAGAIN; 12123d14c5d2SYehuda Sadeh } 1213c3acb181SAlex Elder 1214c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1215c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1216c3acb181SAlex Elder osd->o_incarnation++; 1217c3acb181SAlex Elder 1218c3acb181SAlex Elder return 0; 12193d14c5d2SYehuda Sadeh } 12203d14c5d2SYehuda Sadeh 12213d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 12223d14c5d2SYehuda Sadeh { 12233d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 12243d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 12253d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 12263d14c5d2SYehuda Sadeh 1227aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 12283d14c5d2SYehuda Sadeh while (*p) { 12293d14c5d2SYehuda Sadeh parent = *p; 12303d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 12313d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 12323d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 12333d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 12343d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 12353d14c5d2SYehuda Sadeh else 12363d14c5d2SYehuda Sadeh BUG(); 12373d14c5d2SYehuda Sadeh } 12383d14c5d2SYehuda Sadeh 12393d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 12403d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 12413d14c5d2SYehuda Sadeh } 12423d14c5d2SYehuda Sadeh 12433d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 12443d14c5d2SYehuda Sadeh { 12453d14c5d2SYehuda Sadeh struct ceph_osd *osd; 12463d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 12473d14c5d2SYehuda Sadeh 12483d14c5d2SYehuda Sadeh while (n) { 12493d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 12503d14c5d2SYehuda Sadeh if (o < osd->o_osd) 12513d14c5d2SYehuda Sadeh n = n->rb_left; 12523d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 12533d14c5d2SYehuda Sadeh n = n->rb_right; 12543d14c5d2SYehuda Sadeh else 12553d14c5d2SYehuda Sadeh return osd; 12563d14c5d2SYehuda Sadeh } 12573d14c5d2SYehuda Sadeh return NULL; 12583d14c5d2SYehuda Sadeh } 12593d14c5d2SYehuda Sadeh 12603d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 12613d14c5d2SYehuda Sadeh { 12623d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 1263a319bf56SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 12643d14c5d2SYehuda Sadeh } 12653d14c5d2SYehuda Sadeh 12663d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 12673d14c5d2SYehuda Sadeh { 12683d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 12693d14c5d2SYehuda Sadeh } 12703d14c5d2SYehuda Sadeh 12713d14c5d2SYehuda Sadeh /* 12723d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 12733d14c5d2SYehuda Sadeh * the timeout event. 12743d14c5d2SYehuda Sadeh */ 1275a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 12763d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 12773d14c5d2SYehuda Sadeh { 12783d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 12793d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 128077f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 12813d14c5d2SYehuda Sadeh __insert_request(osdc, req); 12823d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 12833d14c5d2SYehuda Sadeh osdc->num_requests++; 12843d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 12853d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 12863d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 12873d14c5d2SYehuda Sadeh } 1288a40c4f10SYehuda Sadeh } 1289a40c4f10SYehuda Sadeh 12903d14c5d2SYehuda Sadeh /* 12913d14c5d2SYehuda Sadeh * called under osdc->request_mutex 12923d14c5d2SYehuda Sadeh */ 12933d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 12943d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 12953d14c5d2SYehuda Sadeh { 129635f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 129735f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 129835f9f8a0SSage Weil req, req->r_tid); 129935f9f8a0SSage Weil return; 130035f9f8a0SSage Weil } 130135f9f8a0SSage Weil 13023d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 13033d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 13046562d661SIlya Dryomov RB_CLEAR_NODE(&req->r_node); 13053d14c5d2SYehuda Sadeh osdc->num_requests--; 13063d14c5d2SYehuda Sadeh 13073d14c5d2SYehuda Sadeh if (req->r_osd) { 13083d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 13096740a845SAlex Elder ceph_msg_revoke(req->r_request); 13103d14c5d2SYehuda Sadeh 13113d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1312bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 13134f23409eSIlya Dryomov if (list_empty(&req->r_linger_osd_item)) 13143d14c5d2SYehuda Sadeh req->r_osd = NULL; 13153d14c5d2SYehuda Sadeh } 13163d14c5d2SYehuda Sadeh 13177d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 13183d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 13193d14c5d2SYehuda Sadeh 13203d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 13213d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 13223d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 13233d14c5d2SYehuda Sadeh } 13243d14c5d2SYehuda Sadeh } 13253d14c5d2SYehuda Sadeh 13263d14c5d2SYehuda Sadeh /* 13273d14c5d2SYehuda Sadeh * Cancel a previously queued request message 13283d14c5d2SYehuda Sadeh */ 13293d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 13303d14c5d2SYehuda Sadeh { 13313d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 13326740a845SAlex Elder ceph_msg_revoke(req->r_request); 13333d14c5d2SYehuda Sadeh req->r_sent = 0; 13343d14c5d2SYehuda Sadeh } 13353d14c5d2SYehuda Sadeh } 13363d14c5d2SYehuda Sadeh 1337a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1338a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1339a40c4f10SYehuda Sadeh { 1340af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1341af593064SIlya Dryomov WARN_ON(!req->r_linger); 1342af593064SIlya Dryomov 134396e4dac6SAlex Elder ceph_osdc_get_request(req); 1344a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 13456194ea89SSage Weil if (req->r_osd) 13461d0326b1SIlya Dryomov list_add_tail(&req->r_linger_osd_item, 13476194ea89SSage Weil &req->r_osd->o_linger_requests); 1348a40c4f10SYehuda Sadeh } 1349a40c4f10SYehuda Sadeh 1350a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1351a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1352a40c4f10SYehuda Sadeh { 1353af593064SIlya Dryomov WARN_ON(!req->r_linger); 1354af593064SIlya Dryomov 1355af593064SIlya Dryomov if (list_empty(&req->r_linger_item)) { 1356af593064SIlya Dryomov dout("%s %p tid %llu not registered\n", __func__, req, 1357af593064SIlya Dryomov req->r_tid); 1358af593064SIlya Dryomov return; 1359af593064SIlya Dryomov } 1360af593064SIlya Dryomov 1361af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1362a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 1363af593064SIlya Dryomov 136461c74035SAlex Elder if (req->r_osd) { 13651d0326b1SIlya Dryomov list_del_init(&req->r_linger_osd_item); 1366bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 1367fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1368a40c4f10SYehuda Sadeh req->r_osd = NULL; 1369a40c4f10SYehuda Sadeh } 137096e4dac6SAlex Elder ceph_osdc_put_request(req); 1371a40c4f10SYehuda Sadeh } 1372a40c4f10SYehuda Sadeh 1373a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1374a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1375a40c4f10SYehuda Sadeh { 1376a40c4f10SYehuda Sadeh if (!req->r_linger) { 1377a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1378a40c4f10SYehuda Sadeh req->r_linger = 1; 1379a40c4f10SYehuda Sadeh } 1380a40c4f10SYehuda Sadeh } 1381a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1382a40c4f10SYehuda Sadeh 13833d14c5d2SYehuda Sadeh /* 1384d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1385d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1386d29adb34SJosh Durgin * 1387d29adb34SJosh Durgin * Caller should hold map_sem for read. 1388d29adb34SJosh Durgin */ 1389d29adb34SJosh Durgin static bool __req_should_be_paused(struct ceph_osd_client *osdc, 1390d29adb34SJosh Durgin struct ceph_osd_request *req) 1391d29adb34SJosh Durgin { 1392d29adb34SJosh Durgin bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 1393d29adb34SJosh Durgin bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 1394d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 1395d29adb34SJosh Durgin return (req->r_flags & CEPH_OSD_FLAG_READ && pauserd) || 1396d29adb34SJosh Durgin (req->r_flags & CEPH_OSD_FLAG_WRITE && pausewr); 1397d29adb34SJosh Durgin } 1398d29adb34SJosh Durgin 1399d29adb34SJosh Durgin /* 140017a13e40SIlya Dryomov * Calculate mapping of a request to a PG. Takes tiering into account. 140117a13e40SIlya Dryomov */ 140217a13e40SIlya Dryomov static int __calc_request_pg(struct ceph_osdmap *osdmap, 140317a13e40SIlya Dryomov struct ceph_osd_request *req, 140417a13e40SIlya Dryomov struct ceph_pg *pg_out) 140517a13e40SIlya Dryomov { 1406205ee118SIlya Dryomov bool need_check_tiering; 1407205ee118SIlya Dryomov 1408205ee118SIlya Dryomov need_check_tiering = false; 1409205ee118SIlya Dryomov if (req->r_target_oloc.pool == -1) { 1410205ee118SIlya Dryomov req->r_target_oloc = req->r_base_oloc; /* struct */ 1411205ee118SIlya Dryomov need_check_tiering = true; 1412205ee118SIlya Dryomov } 1413205ee118SIlya Dryomov if (req->r_target_oid.name_len == 0) { 1414205ee118SIlya Dryomov ceph_oid_copy(&req->r_target_oid, &req->r_base_oid); 1415205ee118SIlya Dryomov need_check_tiering = true; 1416205ee118SIlya Dryomov } 1417205ee118SIlya Dryomov 1418205ee118SIlya Dryomov if (need_check_tiering && 1419205ee118SIlya Dryomov (req->r_flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 142017a13e40SIlya Dryomov struct ceph_pg_pool_info *pi; 142117a13e40SIlya Dryomov 1422205ee118SIlya Dryomov pi = ceph_pg_pool_by_id(osdmap, req->r_target_oloc.pool); 142317a13e40SIlya Dryomov if (pi) { 142417a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_READ) && 142517a13e40SIlya Dryomov pi->read_tier >= 0) 1426205ee118SIlya Dryomov req->r_target_oloc.pool = pi->read_tier; 142717a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 142817a13e40SIlya Dryomov pi->write_tier >= 0) 1429205ee118SIlya Dryomov req->r_target_oloc.pool = pi->write_tier; 143017a13e40SIlya Dryomov } 143117a13e40SIlya Dryomov /* !pi is caught in ceph_oloc_oid_to_pg() */ 143217a13e40SIlya Dryomov } 143317a13e40SIlya Dryomov 1434205ee118SIlya Dryomov return ceph_oloc_oid_to_pg(osdmap, &req->r_target_oloc, 1435205ee118SIlya Dryomov &req->r_target_oid, pg_out); 143617a13e40SIlya Dryomov } 143717a13e40SIlya Dryomov 1438f671b581SIlya Dryomov static void __enqueue_request(struct ceph_osd_request *req) 1439f671b581SIlya Dryomov { 1440f671b581SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 1441f671b581SIlya Dryomov 1442f671b581SIlya Dryomov dout("%s %p tid %llu to osd%d\n", __func__, req, req->r_tid, 1443f671b581SIlya Dryomov req->r_osd ? req->r_osd->o_osd : -1); 1444f671b581SIlya Dryomov 1445f671b581SIlya Dryomov if (req->r_osd) { 1446f671b581SIlya Dryomov __remove_osd_from_lru(req->r_osd); 1447f671b581SIlya Dryomov list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1448f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 1449f671b581SIlya Dryomov } else { 1450f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 1451f671b581SIlya Dryomov } 1452f671b581SIlya Dryomov } 1453f671b581SIlya Dryomov 145417a13e40SIlya Dryomov /* 14553d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 14563d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 145725985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 14586f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 14593d14c5d2SYehuda Sadeh * 14603d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 14613d14c5d2SYehuda Sadeh * 14623d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 14633d14c5d2SYehuda Sadeh */ 14646f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 146538d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 14663d14c5d2SYehuda Sadeh { 14675b191d99SSage Weil struct ceph_pg pgid; 14683d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 14698008ab10SIlya Dryomov int num, o; 14703d14c5d2SYehuda Sadeh int err; 1471d29adb34SJosh Durgin bool was_paused; 14723d14c5d2SYehuda Sadeh 14736f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 147417a13e40SIlya Dryomov 147517a13e40SIlya Dryomov err = __calc_request_pg(osdc->osdmap, req, &pgid); 14766f6c7006SSage Weil if (err) { 14776f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 14783d14c5d2SYehuda Sadeh return err; 14796f6c7006SSage Weil } 14803d14c5d2SYehuda Sadeh req->r_pgid = pgid; 14813d14c5d2SYehuda Sadeh 14828008ab10SIlya Dryomov num = ceph_calc_pg_acting(osdc->osdmap, pgid, acting, &o); 14838008ab10SIlya Dryomov if (num < 0) 14848008ab10SIlya Dryomov num = 0; 14853d14c5d2SYehuda Sadeh 1486d29adb34SJosh Durgin was_paused = req->r_paused; 1487d29adb34SJosh Durgin req->r_paused = __req_should_be_paused(osdc, req); 1488d29adb34SJosh Durgin if (was_paused && !req->r_paused) 1489d29adb34SJosh Durgin force_resend = 1; 1490d29adb34SJosh Durgin 149138d6453cSSage Weil if ((!force_resend && 149238d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 14933d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 14943d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 14953d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 1496d29adb34SJosh Durgin (req->r_osd == NULL && o == -1) || 1497d29adb34SJosh Durgin req->r_paused) 14983d14c5d2SYehuda Sadeh return 0; /* no change */ 14993d14c5d2SYehuda Sadeh 15005b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 15015b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 15023d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 15033d14c5d2SYehuda Sadeh 15043d14c5d2SYehuda Sadeh /* record full pg acting set */ 15053d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 15063d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 15073d14c5d2SYehuda Sadeh 15083d14c5d2SYehuda Sadeh if (req->r_osd) { 15093d14c5d2SYehuda Sadeh __cancel_request(req); 15103d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1511a390de02SIlya Dryomov list_del_init(&req->r_linger_osd_item); 15123d14c5d2SYehuda Sadeh req->r_osd = NULL; 15133d14c5d2SYehuda Sadeh } 15143d14c5d2SYehuda Sadeh 15153d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 15163d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 15173d14c5d2SYehuda Sadeh err = -ENOMEM; 1518e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 15196f6c7006SSage Weil if (!req->r_osd) { 15206f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 15213d14c5d2SYehuda Sadeh goto out; 15226f6c7006SSage Weil } 15233d14c5d2SYehuda Sadeh 15246f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 15253d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 15263d14c5d2SYehuda Sadeh 1527b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1528b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1529b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 15303d14c5d2SYehuda Sadeh } 15313d14c5d2SYehuda Sadeh 1532f671b581SIlya Dryomov __enqueue_request(req); 15333d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 15343d14c5d2SYehuda Sadeh 15353d14c5d2SYehuda Sadeh out: 15363d14c5d2SYehuda Sadeh return err; 15373d14c5d2SYehuda Sadeh } 15383d14c5d2SYehuda Sadeh 15393d14c5d2SYehuda Sadeh /* 15403d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 15413d14c5d2SYehuda Sadeh */ 154256e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 15433d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 15443d14c5d2SYehuda Sadeh { 15451b83bef2SSage Weil void *p; 15463d14c5d2SYehuda Sadeh 15471b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 15481b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 15491b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 15503d14c5d2SYehuda Sadeh 15511b83bef2SSage Weil /* fill in message content that changes each time we send it */ 15521b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 15531b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 1554205ee118SIlya Dryomov put_unaligned_le64(req->r_target_oloc.pool, req->r_request_pool); 15551b83bef2SSage Weil p = req->r_request_pgid; 15561b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 15571b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 15581b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 15591b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 15601b83bef2SSage Weil sizeof(req->r_reassert_version)); 15612169aea6SSage Weil 15623d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 15633d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 15643d14c5d2SYehuda Sadeh 15653d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 156626be8808SAlex Elder 15673d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 156826be8808SAlex Elder 156926be8808SAlex Elder ceph_con_send(&req->r_osd->o_con, req->r_request); 15703d14c5d2SYehuda Sadeh } 15713d14c5d2SYehuda Sadeh 15723d14c5d2SYehuda Sadeh /* 15736f6c7006SSage Weil * Send any requests in the queue (req_unsent). 15746f6c7006SSage Weil */ 1575f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 15766f6c7006SSage Weil { 15776f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 15786f6c7006SSage Weil 1579f9d25199SAlex Elder dout("__send_queued\n"); 1580f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 15816f6c7006SSage Weil __send_request(osdc, req); 15826f6c7006SSage Weil } 15836f6c7006SSage Weil 15846f6c7006SSage Weil /* 15850bbfdfe8SIlya Dryomov * Caller should hold map_sem for read and request_mutex. 15860bbfdfe8SIlya Dryomov */ 15870bbfdfe8SIlya Dryomov static int __ceph_osdc_start_request(struct ceph_osd_client *osdc, 15880bbfdfe8SIlya Dryomov struct ceph_osd_request *req, 15890bbfdfe8SIlya Dryomov bool nofail) 15900bbfdfe8SIlya Dryomov { 15910bbfdfe8SIlya Dryomov int rc; 15920bbfdfe8SIlya Dryomov 15930bbfdfe8SIlya Dryomov __register_request(osdc, req); 15940bbfdfe8SIlya Dryomov req->r_sent = 0; 15950bbfdfe8SIlya Dryomov req->r_got_reply = 0; 15960bbfdfe8SIlya Dryomov rc = __map_request(osdc, req, 0); 15970bbfdfe8SIlya Dryomov if (rc < 0) { 15980bbfdfe8SIlya Dryomov if (nofail) { 15990bbfdfe8SIlya Dryomov dout("osdc_start_request failed map, " 16000bbfdfe8SIlya Dryomov " will retry %lld\n", req->r_tid); 16010bbfdfe8SIlya Dryomov rc = 0; 16020bbfdfe8SIlya Dryomov } else { 16030bbfdfe8SIlya Dryomov __unregister_request(osdc, req); 16040bbfdfe8SIlya Dryomov } 16050bbfdfe8SIlya Dryomov return rc; 16060bbfdfe8SIlya Dryomov } 16070bbfdfe8SIlya Dryomov 16080bbfdfe8SIlya Dryomov if (req->r_osd == NULL) { 16090bbfdfe8SIlya Dryomov dout("send_request %p no up osds in pg\n", req); 16100bbfdfe8SIlya Dryomov ceph_monc_request_next_osdmap(&osdc->client->monc); 16110bbfdfe8SIlya Dryomov } else { 16120bbfdfe8SIlya Dryomov __send_queued(osdc); 16130bbfdfe8SIlya Dryomov } 16140bbfdfe8SIlya Dryomov 16150bbfdfe8SIlya Dryomov return 0; 16160bbfdfe8SIlya Dryomov } 16170bbfdfe8SIlya Dryomov 16180bbfdfe8SIlya Dryomov /* 16193d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 16203d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 16213d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 16223d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 16233d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 16243d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 16253d14c5d2SYehuda Sadeh * there are no open requests). 16263d14c5d2SYehuda Sadeh */ 16273d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 16283d14c5d2SYehuda Sadeh { 16293d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 16303d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 1631a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 163283aff95eSSage Weil struct ceph_osd_request *req; 16333d14c5d2SYehuda Sadeh struct ceph_osd *osd; 16343d14c5d2SYehuda Sadeh struct list_head slow_osds; 16353d14c5d2SYehuda Sadeh dout("timeout\n"); 16363d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 16373d14c5d2SYehuda Sadeh 16383d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 16393d14c5d2SYehuda Sadeh 16403d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 16413d14c5d2SYehuda Sadeh 16423d14c5d2SYehuda Sadeh /* 16433d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 16443d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 16453d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 16463d14c5d2SYehuda Sadeh */ 16473d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 16483d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 1649a319bf56SIlya Dryomov if (time_before(jiffies, 1650a319bf56SIlya Dryomov req->r_stamp + opts->osd_keepalive_timeout)) 16513d14c5d2SYehuda Sadeh break; 16523d14c5d2SYehuda Sadeh 16533d14c5d2SYehuda Sadeh osd = req->r_osd; 16543d14c5d2SYehuda Sadeh BUG_ON(!osd); 16553d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 16563d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 16573d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 16583d14c5d2SYehuda Sadeh } 16593d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 16603d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 16613d14c5d2SYehuda Sadeh o_keepalive_item); 16623d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 16633d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 16643d14c5d2SYehuda Sadeh } 16653d14c5d2SYehuda Sadeh 16663d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1667f9d25199SAlex Elder __send_queued(osdc); 16683d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 16693d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16703d14c5d2SYehuda Sadeh } 16713d14c5d2SYehuda Sadeh 16723d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 16733d14c5d2SYehuda Sadeh { 16743d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 16753d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 16763d14c5d2SYehuda Sadeh osds_timeout_work.work); 1677a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 16783d14c5d2SYehuda Sadeh 16793d14c5d2SYehuda Sadeh dout("osds timeout\n"); 16803d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1681aca420bcSSage Weil remove_old_osds(osdc); 16823d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16833d14c5d2SYehuda Sadeh 16843d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 16853d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 16863d14c5d2SYehuda Sadeh } 16873d14c5d2SYehuda Sadeh 1688205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 1689205ee118SIlya Dryomov struct ceph_object_locator *oloc) 1690205ee118SIlya Dryomov { 1691205ee118SIlya Dryomov u8 struct_v, struct_cv; 1692205ee118SIlya Dryomov u32 len; 1693205ee118SIlya Dryomov void *struct_end; 1694205ee118SIlya Dryomov int ret = 0; 1695205ee118SIlya Dryomov 1696205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1697205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1698205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1699205ee118SIlya Dryomov if (struct_v < 3) { 1700205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 1701205ee118SIlya Dryomov struct_v, struct_cv); 1702205ee118SIlya Dryomov goto e_inval; 1703205ee118SIlya Dryomov } 1704205ee118SIlya Dryomov if (struct_cv > 6) { 1705205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 1706205ee118SIlya Dryomov struct_v, struct_cv); 1707205ee118SIlya Dryomov goto e_inval; 1708205ee118SIlya Dryomov } 1709205ee118SIlya Dryomov len = ceph_decode_32(p); 1710205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1711205ee118SIlya Dryomov struct_end = *p + len; 1712205ee118SIlya Dryomov 1713205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 1714205ee118SIlya Dryomov *p += 4; /* skip preferred */ 1715205ee118SIlya Dryomov 1716205ee118SIlya Dryomov len = ceph_decode_32(p); 1717205ee118SIlya Dryomov if (len > 0) { 1718205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 1719205ee118SIlya Dryomov goto e_inval; 1720205ee118SIlya Dryomov } 1721205ee118SIlya Dryomov 1722205ee118SIlya Dryomov if (struct_v >= 5) { 1723205ee118SIlya Dryomov len = ceph_decode_32(p); 1724205ee118SIlya Dryomov if (len > 0) { 1725205ee118SIlya Dryomov pr_warn("ceph_object_locator::nspace is set\n"); 1726205ee118SIlya Dryomov goto e_inval; 1727205ee118SIlya Dryomov } 1728205ee118SIlya Dryomov } 1729205ee118SIlya Dryomov 1730205ee118SIlya Dryomov if (struct_v >= 6) { 1731205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 1732205ee118SIlya Dryomov if (hash != -1) { 1733205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 1734205ee118SIlya Dryomov goto e_inval; 1735205ee118SIlya Dryomov } 1736205ee118SIlya Dryomov } 1737205ee118SIlya Dryomov 1738205ee118SIlya Dryomov /* skip the rest */ 1739205ee118SIlya Dryomov *p = struct_end; 1740205ee118SIlya Dryomov out: 1741205ee118SIlya Dryomov return ret; 1742205ee118SIlya Dryomov 1743205ee118SIlya Dryomov e_inval: 1744205ee118SIlya Dryomov ret = -EINVAL; 1745205ee118SIlya Dryomov goto out; 1746205ee118SIlya Dryomov } 1747205ee118SIlya Dryomov 1748205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 1749205ee118SIlya Dryomov struct ceph_request_redirect *redir) 1750205ee118SIlya Dryomov { 1751205ee118SIlya Dryomov u8 struct_v, struct_cv; 1752205ee118SIlya Dryomov u32 len; 1753205ee118SIlya Dryomov void *struct_end; 1754205ee118SIlya Dryomov int ret; 1755205ee118SIlya Dryomov 1756205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1757205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1758205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1759205ee118SIlya Dryomov if (struct_cv > 1) { 1760205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 1761205ee118SIlya Dryomov struct_v, struct_cv); 1762205ee118SIlya Dryomov goto e_inval; 1763205ee118SIlya Dryomov } 1764205ee118SIlya Dryomov len = ceph_decode_32(p); 1765205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1766205ee118SIlya Dryomov struct_end = *p + len; 1767205ee118SIlya Dryomov 1768205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 1769205ee118SIlya Dryomov if (ret) 1770205ee118SIlya Dryomov goto out; 1771205ee118SIlya Dryomov 1772205ee118SIlya Dryomov len = ceph_decode_32(p); 1773205ee118SIlya Dryomov if (len > 0) { 1774205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 1775205ee118SIlya Dryomov goto e_inval; 1776205ee118SIlya Dryomov } 1777205ee118SIlya Dryomov 1778205ee118SIlya Dryomov len = ceph_decode_32(p); 1779205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 1780205ee118SIlya Dryomov 1781205ee118SIlya Dryomov /* skip the rest */ 1782205ee118SIlya Dryomov *p = struct_end; 1783205ee118SIlya Dryomov out: 1784205ee118SIlya Dryomov return ret; 1785205ee118SIlya Dryomov 1786205ee118SIlya Dryomov e_inval: 1787205ee118SIlya Dryomov ret = -EINVAL; 1788205ee118SIlya Dryomov goto out; 1789205ee118SIlya Dryomov } 1790205ee118SIlya Dryomov 179125845472SSage Weil static void complete_request(struct ceph_osd_request *req) 179225845472SSage Weil { 179325845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 179425845472SSage Weil } 179525845472SSage Weil 17963d14c5d2SYehuda Sadeh /* 17973d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 17983d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 17993d14c5d2SYehuda Sadeh */ 180070cf052dSShraddha Barke static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg) 18013d14c5d2SYehuda Sadeh { 18021b83bef2SSage Weil void *p, *end; 18033d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1804205ee118SIlya Dryomov struct ceph_request_redirect redir; 18053d14c5d2SYehuda Sadeh u64 tid; 18061b83bef2SSage Weil int object_len; 180779528734SAlex Elder unsigned int numops; 180879528734SAlex Elder int payload_len, flags; 18093d14c5d2SYehuda Sadeh s32 result; 18101b83bef2SSage Weil s32 retry_attempt; 18111b83bef2SSage Weil struct ceph_pg pg; 18121b83bef2SSage Weil int err; 18131b83bef2SSage Weil u32 reassert_epoch; 18141b83bef2SSage Weil u64 reassert_version; 18151b83bef2SSage Weil u32 osdmap_epoch; 18160d5af164SAlex Elder int already_completed; 18179fc6e064SAlex Elder u32 bytes; 1818b0b31a8fSIlya Dryomov u8 decode_redir; 181979528734SAlex Elder unsigned int i; 18203d14c5d2SYehuda Sadeh 18213d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 18221b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 18231b83bef2SSage Weil 18241b83bef2SSage Weil p = msg->front.iov_base; 18251b83bef2SSage Weil end = p + msg->front.iov_len; 18261b83bef2SSage Weil 18271b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 18281b83bef2SSage Weil object_len = ceph_decode_32(&p); 18291b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 18301b83bef2SSage Weil p += object_len; 18311b83bef2SSage Weil 1832ef4859d6SAlex Elder err = ceph_decode_pgid(&p, end, &pg); 18331b83bef2SSage Weil if (err) 18343d14c5d2SYehuda Sadeh goto bad; 18351b83bef2SSage Weil 18361b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 18371b83bef2SSage Weil flags = ceph_decode_64(&p); 18381b83bef2SSage Weil result = ceph_decode_32(&p); 18391b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 18401b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 18411b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 18421b83bef2SSage Weil 18433d14c5d2SYehuda Sadeh /* lookup */ 1844ff513aceSIlya Dryomov down_read(&osdc->map_sem); 18453d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 18463d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 18473d14c5d2SYehuda Sadeh if (req == NULL) { 18483d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 18498058fd45SAlex Elder goto bad_mutex; 18503d14c5d2SYehuda Sadeh } 18513d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 18521b83bef2SSage Weil 18531b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 18541b83bef2SSage Weil req, result); 18551b83bef2SSage Weil 185618741196SDan Carpenter ceph_decode_need(&p, end, 4, bad_put); 18571b83bef2SSage Weil numops = ceph_decode_32(&p); 18583f1af42aSIlya Dryomov if (numops > CEPH_OSD_MAX_OPS) 18591b83bef2SSage Weil goto bad_put; 18601b83bef2SSage Weil if (numops != req->r_num_ops) 18611b83bef2SSage Weil goto bad_put; 18621b83bef2SSage Weil payload_len = 0; 186318741196SDan Carpenter ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put); 18641b83bef2SSage Weil for (i = 0; i < numops; i++) { 18651b83bef2SSage Weil struct ceph_osd_op *op = p; 18661b83bef2SSage Weil int len; 18671b83bef2SSage Weil 18681b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 18697665d85bSYan, Zheng req->r_ops[i].outdata_len = len; 18701b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 18711b83bef2SSage Weil payload_len += len; 18721b83bef2SSage Weil p += sizeof(*op); 18731b83bef2SSage Weil } 18749fc6e064SAlex Elder bytes = le32_to_cpu(msg->hdr.data_len); 18759fc6e064SAlex Elder if (payload_len != bytes) { 1876b9a67899SJoe Perches pr_warn("sum of op payload lens %d != data_len %d\n", 18779fc6e064SAlex Elder payload_len, bytes); 18781b83bef2SSage Weil goto bad_put; 18791b83bef2SSage Weil } 18801b83bef2SSage Weil 188118741196SDan Carpenter ceph_decode_need(&p, end, 4 + numops * 4, bad_put); 18821b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 18831b83bef2SSage Weil for (i = 0; i < numops; i++) 18847665d85bSYan, Zheng req->r_ops[i].rval = ceph_decode_32(&p); 18853d14c5d2SYehuda Sadeh 1886205ee118SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 6) { 1887205ee118SIlya Dryomov p += 8 + 4; /* skip replay_version */ 1888205ee118SIlya Dryomov p += 8; /* skip user_version */ 1889205ee118SIlya Dryomov 1890b0b31a8fSIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 7) 1891b0b31a8fSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, bad_put); 1892b0b31a8fSIlya Dryomov else 1893b0b31a8fSIlya Dryomov decode_redir = 1; 1894b0b31a8fSIlya Dryomov } else { 1895b0b31a8fSIlya Dryomov decode_redir = 0; 1896b0b31a8fSIlya Dryomov } 1897b0b31a8fSIlya Dryomov 1898b0b31a8fSIlya Dryomov if (decode_redir) { 1899205ee118SIlya Dryomov err = ceph_redirect_decode(&p, end, &redir); 1900205ee118SIlya Dryomov if (err) 1901205ee118SIlya Dryomov goto bad_put; 1902205ee118SIlya Dryomov } else { 1903205ee118SIlya Dryomov redir.oloc.pool = -1; 1904205ee118SIlya Dryomov } 1905205ee118SIlya Dryomov 1906205ee118SIlya Dryomov if (redir.oloc.pool != -1) { 1907205ee118SIlya Dryomov dout("redirect pool %lld\n", redir.oloc.pool); 1908205ee118SIlya Dryomov 1909205ee118SIlya Dryomov __unregister_request(osdc, req); 1910205ee118SIlya Dryomov 1911205ee118SIlya Dryomov req->r_target_oloc = redir.oloc; /* struct */ 1912205ee118SIlya Dryomov 1913205ee118SIlya Dryomov /* 1914205ee118SIlya Dryomov * Start redirect requests with nofail=true. If 1915205ee118SIlya Dryomov * mapping fails, request will end up on the notarget 1916205ee118SIlya Dryomov * list, waiting for the new osdmap (which can take 1917205ee118SIlya Dryomov * a while), even though the original request mapped 1918205ee118SIlya Dryomov * successfully. In the future we might want to follow 1919205ee118SIlya Dryomov * original request's nofail setting here. 1920205ee118SIlya Dryomov */ 1921ff513aceSIlya Dryomov err = __ceph_osdc_start_request(osdc, req, true); 1922205ee118SIlya Dryomov BUG_ON(err); 1923205ee118SIlya Dryomov 1924ff513aceSIlya Dryomov goto out_unlock; 1925205ee118SIlya Dryomov } 1926205ee118SIlya Dryomov 1927eb845ff1SYan, Zheng already_completed = req->r_got_reply; 19283d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 19291b83bef2SSage Weil req->r_result = result; 19303d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 19313d14c5d2SYehuda Sadeh bytes); 19323d14c5d2SYehuda Sadeh if (req->r_result == 0) 19333d14c5d2SYehuda Sadeh req->r_result = bytes; 19343d14c5d2SYehuda Sadeh 19353d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 19361b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 19371b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 19383d14c5d2SYehuda Sadeh 19393d14c5d2SYehuda Sadeh req->r_got_reply = 1; 19403d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 19413d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 1942ff513aceSIlya Dryomov goto out_unlock; 19433d14c5d2SYehuda Sadeh } 19443d14c5d2SYehuda Sadeh 19453d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 19463d14c5d2SYehuda Sadeh 1947a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1948a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1949a40c4f10SYehuda Sadeh 19503d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 19513d14c5d2SYehuda Sadeh if (result < 0 || 19523d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 19533d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 19543d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 19553d14c5d2SYehuda Sadeh 19563d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1957ff513aceSIlya Dryomov up_read(&osdc->map_sem); 19583d14c5d2SYehuda Sadeh 1959eb845ff1SYan, Zheng if (!already_completed) { 196061c5d6bfSYan, Zheng if (req->r_unsafe_callback && 196161c5d6bfSYan, Zheng result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK)) 196261c5d6bfSYan, Zheng req->r_unsafe_callback(req, true); 19633d14c5d2SYehuda Sadeh if (req->r_callback) 19643d14c5d2SYehuda Sadeh req->r_callback(req, msg); 19653d14c5d2SYehuda Sadeh else 19663d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 1967eb845ff1SYan, Zheng } 19683d14c5d2SYehuda Sadeh 196961c5d6bfSYan, Zheng if (flags & CEPH_OSD_FLAG_ONDISK) { 197061c5d6bfSYan, Zheng if (req->r_unsafe_callback && already_completed) 197161c5d6bfSYan, Zheng req->r_unsafe_callback(req, false); 197225845472SSage Weil complete_request(req); 197361c5d6bfSYan, Zheng } 19743d14c5d2SYehuda Sadeh 1975ff513aceSIlya Dryomov out: 1976a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 19773d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 19783d14c5d2SYehuda Sadeh return; 1979ff513aceSIlya Dryomov out_unlock: 1980ff513aceSIlya Dryomov mutex_unlock(&osdc->request_mutex); 1981ff513aceSIlya Dryomov up_read(&osdc->map_sem); 1982ff513aceSIlya Dryomov goto out; 19833d14c5d2SYehuda Sadeh 19841b83bef2SSage Weil bad_put: 198537c89bdeSLi Wang req->r_result = -EIO; 198637c89bdeSLi Wang __unregister_request(osdc, req); 198737c89bdeSLi Wang if (req->r_callback) 198837c89bdeSLi Wang req->r_callback(req, msg); 198937c89bdeSLi Wang else 199037c89bdeSLi Wang complete_all(&req->r_completion); 199137c89bdeSLi Wang complete_request(req); 19921b83bef2SSage Weil ceph_osdc_put_request(req); 19938058fd45SAlex Elder bad_mutex: 19948058fd45SAlex Elder mutex_unlock(&osdc->request_mutex); 1995ff513aceSIlya Dryomov up_read(&osdc->map_sem); 19963d14c5d2SYehuda Sadeh bad: 19971b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 19981b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 19993d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 20003d14c5d2SYehuda Sadeh } 20013d14c5d2SYehuda Sadeh 20026f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 20033d14c5d2SYehuda Sadeh { 20043d14c5d2SYehuda Sadeh struct rb_node *p, *n; 20053d14c5d2SYehuda Sadeh 20067eb71e03SIlya Dryomov dout("%s %p\n", __func__, osdc); 20073d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 20086f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 20093d14c5d2SYehuda Sadeh 20103d14c5d2SYehuda Sadeh n = rb_next(p); 20113d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 20123d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 20133d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 20143d14c5d2SYehuda Sadeh osd->o_osd), 20153d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 20163d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 20173d14c5d2SYehuda Sadeh } 20183d14c5d2SYehuda Sadeh } 20193d14c5d2SYehuda Sadeh 20203d14c5d2SYehuda Sadeh /* 20216f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 20226f6c7006SSage Weil * no osd, request a new map. 20233d14c5d2SYehuda Sadeh * 2024e6d50f67SAlex Elder * Caller should hold map_sem for read. 20253d14c5d2SYehuda Sadeh */ 20269a1ea2dbSJosh Durgin static void kick_requests(struct ceph_osd_client *osdc, bool force_resend, 20279a1ea2dbSJosh Durgin bool force_resend_writes) 20283d14c5d2SYehuda Sadeh { 2029a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 20306f6c7006SSage Weil struct rb_node *p; 20316f6c7006SSage Weil int needmap = 0; 20326f6c7006SSage Weil int err; 20339a1ea2dbSJosh Durgin bool force_resend_req; 20343d14c5d2SYehuda Sadeh 20359a1ea2dbSJosh Durgin dout("kick_requests %s %s\n", force_resend ? " (force resend)" : "", 20369a1ea2dbSJosh Durgin force_resend_writes ? " (force resend writes)" : ""); 20373d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 20386194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 20396f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 20406194ea89SSage Weil p = rb_next(p); 2041ab60b16dSAlex Elder 2042ab60b16dSAlex Elder /* 2043ab60b16dSAlex Elder * For linger requests that have not yet been 2044ab60b16dSAlex Elder * registered, move them to the linger list; they'll 2045ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 2046ab60b16dSAlex Elder * the request before re-registering it as a linger 2047ab60b16dSAlex Elder * request to ensure the __map_request() below 2048ab60b16dSAlex Elder * will decide it needs to be sent. 2049ab60b16dSAlex Elder */ 2050ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 2051ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 2052ab60b16dSAlex Elder req, req->r_tid, 2053ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 205496e4dac6SAlex Elder ceph_osdc_get_request(req); 2055ab60b16dSAlex Elder __unregister_request(osdc, req); 2056ab60b16dSAlex Elder __register_linger_request(osdc, req); 205796e4dac6SAlex Elder ceph_osdc_put_request(req); 2058ab60b16dSAlex Elder continue; 2059ab60b16dSAlex Elder } 2060ab60b16dSAlex Elder 20619a1ea2dbSJosh Durgin force_resend_req = force_resend || 20629a1ea2dbSJosh Durgin (force_resend_writes && 20639a1ea2dbSJosh Durgin req->r_flags & CEPH_OSD_FLAG_WRITE); 20649a1ea2dbSJosh Durgin err = __map_request(osdc, req, force_resend_req); 20656f6c7006SSage Weil if (err < 0) 20666f6c7006SSage Weil continue; /* error */ 20676f6c7006SSage Weil if (req->r_osd == NULL) { 20686f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 20696f6c7006SSage Weil needmap++; /* request a newer map */ 20706f6c7006SSage Weil } else if (err > 0) { 20716194ea89SSage Weil if (!req->r_linger) { 20726194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 20736194ea89SSage Weil req->r_tid, 20746f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 20756f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 20766f6c7006SSage Weil } 20776f6c7006SSage Weil } 20786194ea89SSage Weil } 2079a40c4f10SYehuda Sadeh 2080a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 2081a40c4f10SYehuda Sadeh r_linger_item) { 2082a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 2083a40c4f10SYehuda Sadeh 20849a1ea2dbSJosh Durgin err = __map_request(osdc, req, 20859a1ea2dbSJosh Durgin force_resend || force_resend_writes); 2086ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 2087a40c4f10SYehuda Sadeh if (err < 0) 2088a40c4f10SYehuda Sadeh continue; /* hrm! */ 2089b0494532SIlya Dryomov if (req->r_osd == NULL || err > 0) { 2090a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 2091b0494532SIlya Dryomov dout("lingering %p tid %llu maps to no osd\n", 2092b0494532SIlya Dryomov req, req->r_tid); 2093b0494532SIlya Dryomov /* 2094b0494532SIlya Dryomov * A homeless lingering request makes 2095b0494532SIlya Dryomov * no sense, as it's job is to keep 2096b0494532SIlya Dryomov * a particular OSD connection open. 2097b0494532SIlya Dryomov * Request a newer map and kick the 2098b0494532SIlya Dryomov * request, knowing that it won't be 2099b0494532SIlya Dryomov * resent until we actually get a map 2100b0494532SIlya Dryomov * that can tell us where to send it. 2101b0494532SIlya Dryomov */ 2102b0494532SIlya Dryomov needmap++; 2103a40c4f10SYehuda Sadeh } 2104a40c4f10SYehuda Sadeh 2105b0494532SIlya Dryomov dout("kicking lingering %p tid %llu osd%d\n", req, 2106b0494532SIlya Dryomov req->r_tid, req->r_osd ? req->r_osd->o_osd : -1); 2107a40c4f10SYehuda Sadeh __register_request(osdc, req); 2108c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 2109a40c4f10SYehuda Sadeh } 2110b0494532SIlya Dryomov } 211114d2f38dSAlex Elder reset_changed_osds(osdc); 21123d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 21133d14c5d2SYehuda Sadeh 21143d14c5d2SYehuda Sadeh if (needmap) { 21153d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 21163d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 21173d14c5d2SYehuda Sadeh } 21183d14c5d2SYehuda Sadeh } 21196f6c7006SSage Weil 21206f6c7006SSage Weil 21213d14c5d2SYehuda Sadeh /* 21223d14c5d2SYehuda Sadeh * Process updated osd map. 21233d14c5d2SYehuda Sadeh * 21243d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 21253d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 21263d14c5d2SYehuda Sadeh * off to different OSDs as needed. 21273d14c5d2SYehuda Sadeh */ 21283d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 21293d14c5d2SYehuda Sadeh { 21303d14c5d2SYehuda Sadeh void *p, *end, *next; 21313d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 21323d14c5d2SYehuda Sadeh u32 epoch; 21333d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 21343d14c5d2SYehuda Sadeh int err; 21353d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 21369a1ea2dbSJosh Durgin bool was_full; 21373d14c5d2SYehuda Sadeh 21383d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 21393d14c5d2SYehuda Sadeh p = msg->front.iov_base; 21403d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 21413d14c5d2SYehuda Sadeh 21423d14c5d2SYehuda Sadeh /* verify fsid */ 21433d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 21443d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 21453d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 21463d14c5d2SYehuda Sadeh return; 21473d14c5d2SYehuda Sadeh 21483d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 21493d14c5d2SYehuda Sadeh 21509a1ea2dbSJosh Durgin was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 21519a1ea2dbSJosh Durgin 21523d14c5d2SYehuda Sadeh /* incremental maps */ 21533d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 21543d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 21553d14c5d2SYehuda Sadeh while (nr_maps > 0) { 21563d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 21573d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 21583d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 21593d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 21603d14c5d2SYehuda Sadeh next = p + maplen; 21613d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 21623d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 21633d14c5d2SYehuda Sadeh epoch, maplen); 21643d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 21653d14c5d2SYehuda Sadeh osdc->osdmap, 216615d9882cSAlex Elder &osdc->client->msgr); 21673d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 21683d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 21693d14c5d2SYehuda Sadeh goto bad; 21703d14c5d2SYehuda Sadeh } 21713d14c5d2SYehuda Sadeh BUG_ON(!newmap); 21723d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 21733d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 21743d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 21753d14c5d2SYehuda Sadeh } 21769a1ea2dbSJosh Durgin was_full = was_full || 21779a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 21789a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 21799a1ea2dbSJosh Durgin kick_requests(osdc, 0, was_full); 21803d14c5d2SYehuda Sadeh } else { 21813d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 21823d14c5d2SYehuda Sadeh epoch, maplen); 21833d14c5d2SYehuda Sadeh } 21843d14c5d2SYehuda Sadeh p = next; 21853d14c5d2SYehuda Sadeh nr_maps--; 21863d14c5d2SYehuda Sadeh } 21873d14c5d2SYehuda Sadeh if (newmap) 21883d14c5d2SYehuda Sadeh goto done; 21893d14c5d2SYehuda Sadeh 21903d14c5d2SYehuda Sadeh /* full maps */ 21913d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 21923d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 21933d14c5d2SYehuda Sadeh while (nr_maps) { 21943d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 21953d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 21963d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 21973d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 21983d14c5d2SYehuda Sadeh if (nr_maps > 1) { 21993d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 22003d14c5d2SYehuda Sadeh epoch, maplen); 22013d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 22023d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 22033d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 22043d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 22053d14c5d2SYehuda Sadeh } else { 220638d6453cSSage Weil int skipped_map = 0; 220738d6453cSSage Weil 22083d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 2209a2505d63SIlya Dryomov newmap = ceph_osdmap_decode(&p, p+maplen); 22103d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 22113d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 22123d14c5d2SYehuda Sadeh goto bad; 22133d14c5d2SYehuda Sadeh } 22143d14c5d2SYehuda Sadeh BUG_ON(!newmap); 22153d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 22163d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 221738d6453cSSage Weil if (oldmap) { 221838d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 221938d6453cSSage Weil skipped_map = 1; 22203d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 222138d6453cSSage Weil } 22229a1ea2dbSJosh Durgin was_full = was_full || 22239a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 22249a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 22259a1ea2dbSJosh Durgin kick_requests(osdc, skipped_map, was_full); 22263d14c5d2SYehuda Sadeh } 22273d14c5d2SYehuda Sadeh p += maplen; 22283d14c5d2SYehuda Sadeh nr_maps--; 22293d14c5d2SYehuda Sadeh } 22303d14c5d2SYehuda Sadeh 2231b72e19b9SDan Carpenter if (!osdc->osdmap) 2232b72e19b9SDan Carpenter goto bad; 22333d14c5d2SYehuda Sadeh done: 22343d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 223582dcabadSIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 223682dcabadSIlya Dryomov osdc->osdmap->epoch); 2237cd634fb6SSage Weil 2238cd634fb6SSage Weil /* 2239cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 2240cd634fb6SSage Weil * we find out when we are no longer full and stop returning 2241cd634fb6SSage Weil * ENOSPC. 2242cd634fb6SSage Weil */ 2243d29adb34SJosh Durgin if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 2244d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || 2245d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) 2246cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 2247cd634fb6SSage Weil 2248f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 2249f9d25199SAlex Elder __send_queued(osdc); 2250f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 22513d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 22523d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 22533d14c5d2SYehuda Sadeh return; 22543d14c5d2SYehuda Sadeh 22553d14c5d2SYehuda Sadeh bad: 22563d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 22573d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 22583d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 22593d14c5d2SYehuda Sadeh } 22603d14c5d2SYehuda Sadeh 22613d14c5d2SYehuda Sadeh /* 2262a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 2263a40c4f10SYehuda Sadeh * 2264a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 2265a40c4f10SYehuda Sadeh */ 2266a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 2267a40c4f10SYehuda Sadeh { 2268a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 2269a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 2270a40c4f10SYehuda Sadeh 2271a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 2272a40c4f10SYehuda Sadeh kfree(event); 2273a40c4f10SYehuda Sadeh } 2274a40c4f10SYehuda Sadeh 2275a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 2276a40c4f10SYehuda Sadeh { 2277a40c4f10SYehuda Sadeh kref_get(&event->kref); 2278a40c4f10SYehuda Sadeh } 2279a40c4f10SYehuda Sadeh 2280a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 2281a40c4f10SYehuda Sadeh { 2282a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 2283a40c4f10SYehuda Sadeh } 2284a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 2285a40c4f10SYehuda Sadeh 2286a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 2287a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 2288a40c4f10SYehuda Sadeh { 2289a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2290a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2291a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2292a40c4f10SYehuda Sadeh 2293a40c4f10SYehuda Sadeh while (*p) { 2294a40c4f10SYehuda Sadeh parent = *p; 2295a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2296a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 2297a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2298a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 2299a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2300a40c4f10SYehuda Sadeh else 2301a40c4f10SYehuda Sadeh BUG(); 2302a40c4f10SYehuda Sadeh } 2303a40c4f10SYehuda Sadeh 2304a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 2305a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 2306a40c4f10SYehuda Sadeh } 2307a40c4f10SYehuda Sadeh 2308a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 2309a40c4f10SYehuda Sadeh u64 cookie) 2310a40c4f10SYehuda Sadeh { 2311a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2312a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2313a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2314a40c4f10SYehuda Sadeh 2315a40c4f10SYehuda Sadeh while (*p) { 2316a40c4f10SYehuda Sadeh parent = *p; 2317a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2318a40c4f10SYehuda Sadeh if (cookie < event->cookie) 2319a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2320a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 2321a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2322a40c4f10SYehuda Sadeh else 2323a40c4f10SYehuda Sadeh return event; 2324a40c4f10SYehuda Sadeh } 2325a40c4f10SYehuda Sadeh return NULL; 2326a40c4f10SYehuda Sadeh } 2327a40c4f10SYehuda Sadeh 2328a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 2329a40c4f10SYehuda Sadeh { 2330a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2331a40c4f10SYehuda Sadeh 2332a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 2333a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 2334a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 2335a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2336a40c4f10SYehuda Sadeh } else { 2337a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 2338a40c4f10SYehuda Sadeh } 2339a40c4f10SYehuda Sadeh } 2340a40c4f10SYehuda Sadeh 2341a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 2342a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 23433c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 2344a40c4f10SYehuda Sadeh { 2345a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2346a40c4f10SYehuda Sadeh 2347a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 2348a40c4f10SYehuda Sadeh if (!event) 2349a40c4f10SYehuda Sadeh return -ENOMEM; 2350a40c4f10SYehuda Sadeh 2351a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 2352a40c4f10SYehuda Sadeh event->cb = event_cb; 23533c663bbdSAlex Elder event->one_shot = 0; 2354a40c4f10SYehuda Sadeh event->data = data; 2355a40c4f10SYehuda Sadeh event->osdc = osdc; 2356a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 23573ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 2358a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 2359a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 2360a40c4f10SYehuda Sadeh 2361a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2362a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 2363a40c4f10SYehuda Sadeh __insert_event(osdc, event); 2364a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2365a40c4f10SYehuda Sadeh 2366a40c4f10SYehuda Sadeh *pevent = event; 2367a40c4f10SYehuda Sadeh return 0; 2368a40c4f10SYehuda Sadeh } 2369a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 2370a40c4f10SYehuda Sadeh 2371a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 2372a40c4f10SYehuda Sadeh { 2373a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2374a40c4f10SYehuda Sadeh 2375a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 2376a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2377a40c4f10SYehuda Sadeh __remove_event(event); 2378a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2379a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 2380a40c4f10SYehuda Sadeh } 2381a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 2382a40c4f10SYehuda Sadeh 2383a40c4f10SYehuda Sadeh 2384a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 2385a40c4f10SYehuda Sadeh { 2386a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 2387a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 2388a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 2389a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 2390a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 2391a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 2392a40c4f10SYehuda Sadeh 2393a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 2394a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 2395a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 2396a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2397a40c4f10SYehuda Sadeh kfree(event_work); 2398a40c4f10SYehuda Sadeh } 2399a40c4f10SYehuda Sadeh 2400a40c4f10SYehuda Sadeh 2401a40c4f10SYehuda Sadeh /* 2402a40c4f10SYehuda Sadeh * Process osd watch notifications 2403a40c4f10SYehuda Sadeh */ 24043c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 24053c663bbdSAlex Elder struct ceph_msg *msg) 2406a40c4f10SYehuda Sadeh { 2407a40c4f10SYehuda Sadeh void *p, *end; 2408a40c4f10SYehuda Sadeh u8 proto_ver; 2409a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 2410a40c4f10SYehuda Sadeh u8 opcode; 2411a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2412a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 2413a40c4f10SYehuda Sadeh 2414a40c4f10SYehuda Sadeh p = msg->front.iov_base; 2415a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 2416a40c4f10SYehuda Sadeh 2417a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 2418a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 2419a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 2420a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 2421a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 2422a40c4f10SYehuda Sadeh 2423a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2424a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 2425a40c4f10SYehuda Sadeh if (event) { 24263c663bbdSAlex Elder BUG_ON(event->one_shot); 2427a40c4f10SYehuda Sadeh get_event(event); 2428a40c4f10SYehuda Sadeh } 2429a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2430a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 2431a40c4f10SYehuda Sadeh cookie, ver, event); 2432a40c4f10SYehuda Sadeh if (event) { 2433a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 2434a40c4f10SYehuda Sadeh if (!event_work) { 243591883cd2SIlya Dryomov pr_err("couldn't allocate event_work\n"); 243691883cd2SIlya Dryomov ceph_osdc_put_event(event); 243791883cd2SIlya Dryomov return; 2438a40c4f10SYehuda Sadeh } 24396b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 2440a40c4f10SYehuda Sadeh event_work->event = event; 2441a40c4f10SYehuda Sadeh event_work->ver = ver; 2442a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 2443a40c4f10SYehuda Sadeh event_work->opcode = opcode; 244491883cd2SIlya Dryomov 244591883cd2SIlya Dryomov queue_work(osdc->notify_wq, &event_work->work); 2446a40c4f10SYehuda Sadeh } 2447a40c4f10SYehuda Sadeh 2448a40c4f10SYehuda Sadeh return; 2449a40c4f10SYehuda Sadeh 2450a40c4f10SYehuda Sadeh bad: 2451a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 2452a40c4f10SYehuda Sadeh } 2453a40c4f10SYehuda Sadeh 2454a40c4f10SYehuda Sadeh /* 2455e65550fdSAlex Elder * build new request AND message 2456e65550fdSAlex Elder * 2457e65550fdSAlex Elder */ 2458e65550fdSAlex Elder void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, 2459e65550fdSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 2460e65550fdSAlex Elder struct timespec *mtime) 2461e65550fdSAlex Elder { 2462e65550fdSAlex Elder struct ceph_msg *msg = req->r_request; 2463e65550fdSAlex Elder void *p; 2464e65550fdSAlex Elder size_t msg_size; 2465e65550fdSAlex Elder int flags = req->r_flags; 2466e65550fdSAlex Elder u64 data_len; 2467e65550fdSAlex Elder unsigned int i; 2468e65550fdSAlex Elder 2469e65550fdSAlex Elder req->r_snapid = snap_id; 247084127282SIlya Dryomov WARN_ON(snapc != req->r_snapc); 2471e65550fdSAlex Elder 2472e65550fdSAlex Elder /* encode request */ 2473e65550fdSAlex Elder msg->hdr.version = cpu_to_le16(4); 2474e65550fdSAlex Elder 2475e65550fdSAlex Elder p = msg->front.iov_base; 2476e65550fdSAlex Elder ceph_encode_32(&p, 1); /* client_inc is always 1 */ 2477e65550fdSAlex Elder req->r_request_osdmap_epoch = p; 2478e65550fdSAlex Elder p += 4; 2479e65550fdSAlex Elder req->r_request_flags = p; 2480e65550fdSAlex Elder p += 4; 2481e65550fdSAlex Elder if (req->r_flags & CEPH_OSD_FLAG_WRITE) 2482e65550fdSAlex Elder ceph_encode_timespec(p, mtime); 2483e65550fdSAlex Elder p += sizeof(struct ceph_timespec); 2484e65550fdSAlex Elder req->r_request_reassert_version = p; 2485e65550fdSAlex Elder p += sizeof(struct ceph_eversion); /* will get filled in */ 2486e65550fdSAlex Elder 2487e65550fdSAlex Elder /* oloc */ 2488e65550fdSAlex Elder ceph_encode_8(&p, 4); 2489e65550fdSAlex Elder ceph_encode_8(&p, 4); 2490e65550fdSAlex Elder ceph_encode_32(&p, 8 + 4 + 4); 2491e65550fdSAlex Elder req->r_request_pool = p; 2492e65550fdSAlex Elder p += 8; 2493e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2494e65550fdSAlex Elder ceph_encode_32(&p, 0); /* key len */ 2495e65550fdSAlex Elder 2496e65550fdSAlex Elder ceph_encode_8(&p, 1); 2497e65550fdSAlex Elder req->r_request_pgid = p; 2498e65550fdSAlex Elder p += 8 + 4; 2499e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2500e65550fdSAlex Elder 2501e65550fdSAlex Elder /* oid */ 25023c972c95SIlya Dryomov ceph_encode_32(&p, req->r_base_oid.name_len); 25033c972c95SIlya Dryomov memcpy(p, req->r_base_oid.name, req->r_base_oid.name_len); 25043c972c95SIlya Dryomov dout("oid '%.*s' len %d\n", req->r_base_oid.name_len, 25053c972c95SIlya Dryomov req->r_base_oid.name, req->r_base_oid.name_len); 25063c972c95SIlya Dryomov p += req->r_base_oid.name_len; 2507e65550fdSAlex Elder 2508e65550fdSAlex Elder /* ops--can imply data */ 2509e65550fdSAlex Elder ceph_encode_16(&p, (u16)req->r_num_ops); 2510e65550fdSAlex Elder data_len = 0; 2511e65550fdSAlex Elder for (i = 0; i < req->r_num_ops; i++) { 2512e65550fdSAlex Elder data_len += osd_req_encode_op(req, p, i); 2513e65550fdSAlex Elder p += sizeof(struct ceph_osd_op); 2514e65550fdSAlex Elder } 2515e65550fdSAlex Elder 2516e65550fdSAlex Elder /* snaps */ 2517e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapid); 2518e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 2519e65550fdSAlex Elder ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 2520e65550fdSAlex Elder if (req->r_snapc) { 252184127282SIlya Dryomov for (i = 0; i < req->r_snapc->num_snaps; i++) { 2522e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc->snaps[i]); 2523e65550fdSAlex Elder } 2524e65550fdSAlex Elder } 2525e65550fdSAlex Elder 2526e65550fdSAlex Elder req->r_request_attempts = p; 2527e65550fdSAlex Elder p += 4; 2528e65550fdSAlex Elder 2529e65550fdSAlex Elder /* data */ 2530e65550fdSAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 2531e65550fdSAlex Elder u16 data_off; 2532e65550fdSAlex Elder 2533e65550fdSAlex Elder /* 2534e65550fdSAlex Elder * The header "data_off" is a hint to the receiver 2535e65550fdSAlex Elder * allowing it to align received data into its 2536e65550fdSAlex Elder * buffers such that there's no need to re-copy 2537e65550fdSAlex Elder * it before writing it to disk (direct I/O). 2538e65550fdSAlex Elder */ 2539e65550fdSAlex Elder data_off = (u16) (off & 0xffff); 2540e65550fdSAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 2541e65550fdSAlex Elder } 2542e65550fdSAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 2543e65550fdSAlex Elder 2544e65550fdSAlex Elder BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 2545e65550fdSAlex Elder msg_size = p - msg->front.iov_base; 2546e65550fdSAlex Elder msg->front.iov_len = msg_size; 2547e65550fdSAlex Elder msg->hdr.front_len = cpu_to_le32(msg_size); 2548e65550fdSAlex Elder 2549e65550fdSAlex Elder dout("build_request msg_size was %d\n", (int)msg_size); 2550e65550fdSAlex Elder } 2551e65550fdSAlex Elder EXPORT_SYMBOL(ceph_osdc_build_request); 2552e65550fdSAlex Elder 2553e65550fdSAlex Elder /* 25543d14c5d2SYehuda Sadeh * Register request, send initial attempt. 25553d14c5d2SYehuda Sadeh */ 25563d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 25573d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 25583d14c5d2SYehuda Sadeh bool nofail) 25593d14c5d2SYehuda Sadeh { 25600bbfdfe8SIlya Dryomov int rc; 25613d14c5d2SYehuda Sadeh 25623d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 25633d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 25640bbfdfe8SIlya Dryomov 25650bbfdfe8SIlya Dryomov rc = __ceph_osdc_start_request(osdc, req, nofail); 25660bbfdfe8SIlya Dryomov 25673d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 25683d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 25690bbfdfe8SIlya Dryomov 25703d14c5d2SYehuda Sadeh return rc; 25713d14c5d2SYehuda Sadeh } 25723d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 25733d14c5d2SYehuda Sadeh 25743d14c5d2SYehuda Sadeh /* 2575c9f9b93dSIlya Dryomov * Unregister a registered request. The request is not completed (i.e. 2576c9f9b93dSIlya Dryomov * no callbacks or wakeups) - higher layers are supposed to know what 2577c9f9b93dSIlya Dryomov * they are canceling. 2578c9f9b93dSIlya Dryomov */ 2579c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 2580c9f9b93dSIlya Dryomov { 2581c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 2582c9f9b93dSIlya Dryomov 2583c9f9b93dSIlya Dryomov mutex_lock(&osdc->request_mutex); 2584c9f9b93dSIlya Dryomov if (req->r_linger) 2585c9f9b93dSIlya Dryomov __unregister_linger_request(osdc, req); 2586c9f9b93dSIlya Dryomov __unregister_request(osdc, req); 2587c9f9b93dSIlya Dryomov mutex_unlock(&osdc->request_mutex); 2588c9f9b93dSIlya Dryomov 2589c9f9b93dSIlya Dryomov dout("%s %p tid %llu canceled\n", __func__, req, req->r_tid); 2590c9f9b93dSIlya Dryomov } 2591c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 2592c9f9b93dSIlya Dryomov 2593c9f9b93dSIlya Dryomov /* 25943d14c5d2SYehuda Sadeh * wait for a request to complete 25953d14c5d2SYehuda Sadeh */ 25963d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 25973d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 25983d14c5d2SYehuda Sadeh { 25993d14c5d2SYehuda Sadeh int rc; 26003d14c5d2SYehuda Sadeh 2601c9f9b93dSIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 2602c9f9b93dSIlya Dryomov 26033d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 26043d14c5d2SYehuda Sadeh if (rc < 0) { 2605c9f9b93dSIlya Dryomov dout("%s %p tid %llu interrupted\n", __func__, req, req->r_tid); 2606c9f9b93dSIlya Dryomov ceph_osdc_cancel_request(req); 260725845472SSage Weil complete_request(req); 26083d14c5d2SYehuda Sadeh return rc; 26093d14c5d2SYehuda Sadeh } 26103d14c5d2SYehuda Sadeh 2611c9f9b93dSIlya Dryomov dout("%s %p tid %llu result %d\n", __func__, req, req->r_tid, 2612c9f9b93dSIlya Dryomov req->r_result); 26133d14c5d2SYehuda Sadeh return req->r_result; 26143d14c5d2SYehuda Sadeh } 26153d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 26163d14c5d2SYehuda Sadeh 26173d14c5d2SYehuda Sadeh /* 26183d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 26193d14c5d2SYehuda Sadeh */ 26203d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 26213d14c5d2SYehuda Sadeh { 26223d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 26233d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 26243d14c5d2SYehuda Sadeh 26253d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 26263d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 26273d14c5d2SYehuda Sadeh while (1) { 26283d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 26293d14c5d2SYehuda Sadeh if (!req) 26303d14c5d2SYehuda Sadeh break; 26313d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 26323d14c5d2SYehuda Sadeh break; 26333d14c5d2SYehuda Sadeh 26343d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 26353d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 26363d14c5d2SYehuda Sadeh continue; 26373d14c5d2SYehuda Sadeh 26383d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 26393d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 26403d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 26413d14c5d2SYehuda Sadeh req->r_tid, last_tid); 26423d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 26433d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 26443d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 26453d14c5d2SYehuda Sadeh } 26463d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 26473d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 26483d14c5d2SYehuda Sadeh } 26493d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 26503d14c5d2SYehuda Sadeh 26513d14c5d2SYehuda Sadeh /* 2652dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 2653dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 2654dd935f44SJosh Durgin */ 2655f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 2656dd935f44SJosh Durgin { 2657dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 2658dd935f44SJosh Durgin } 2659dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 2660dd935f44SJosh Durgin 2661dd935f44SJosh Durgin 2662dd935f44SJosh Durgin /* 26633d14c5d2SYehuda Sadeh * init, shutdown 26643d14c5d2SYehuda Sadeh */ 26653d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 26663d14c5d2SYehuda Sadeh { 26673d14c5d2SYehuda Sadeh int err; 26683d14c5d2SYehuda Sadeh 26693d14c5d2SYehuda Sadeh dout("init\n"); 26703d14c5d2SYehuda Sadeh osdc->client = client; 26713d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 26723d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 26733d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 26743d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 26753d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 26763d14c5d2SYehuda Sadeh osdc->last_tid = 0; 26773d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 26783d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 26793d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 26803d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 26816f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 26826f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 2683a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 26843d14c5d2SYehuda Sadeh osdc->num_requests = 0; 26853d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 26863d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2687a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 2688a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 2689a40c4f10SYehuda Sadeh osdc->event_count = 0; 26903d14c5d2SYehuda Sadeh 26913d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 2692a319bf56SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 26933d14c5d2SYehuda Sadeh 26943d14c5d2SYehuda Sadeh err = -ENOMEM; 26959e767adbSIlya Dryomov osdc->req_mempool = mempool_create_slab_pool(10, 26969e767adbSIlya Dryomov ceph_osd_request_cache); 26973d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 26983d14c5d2SYehuda Sadeh goto out; 26993d14c5d2SYehuda Sadeh 2700d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2701711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op"); 27023d14c5d2SYehuda Sadeh if (err < 0) 27033d14c5d2SYehuda Sadeh goto out_mempool; 2704d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 2705711da55dSIlya Dryomov PAGE_SIZE, 10, true, "osd_op_reply"); 27063d14c5d2SYehuda Sadeh if (err < 0) 27073d14c5d2SYehuda Sadeh goto out_msgpool; 2708a40c4f10SYehuda Sadeh 2709dbcae088SDan Carpenter err = -ENOMEM; 2710a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2711dbcae088SDan Carpenter if (!osdc->notify_wq) 2712c172ec5cSIlya Dryomov goto out_msgpool_reply; 2713c172ec5cSIlya Dryomov 27143d14c5d2SYehuda Sadeh return 0; 27153d14c5d2SYehuda Sadeh 2716c172ec5cSIlya Dryomov out_msgpool_reply: 2717c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 27183d14c5d2SYehuda Sadeh out_msgpool: 27193d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 27203d14c5d2SYehuda Sadeh out_mempool: 27213d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 27223d14c5d2SYehuda Sadeh out: 27233d14c5d2SYehuda Sadeh return err; 27243d14c5d2SYehuda Sadeh } 27253d14c5d2SYehuda Sadeh 27263d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 27273d14c5d2SYehuda Sadeh { 2728a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2729a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 27303d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 27313d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 27323d14c5d2SYehuda Sadeh if (osdc->osdmap) { 27333d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 27343d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 27353d14c5d2SYehuda Sadeh } 2736aca420bcSSage Weil remove_all_osds(osdc); 27373d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 27383d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 27393d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 27403d14c5d2SYehuda Sadeh } 27413d14c5d2SYehuda Sadeh 27423d14c5d2SYehuda Sadeh /* 27433d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 27443d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 27453d14c5d2SYehuda Sadeh */ 27463d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 27473d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 27483d14c5d2SYehuda Sadeh u64 off, u64 *plen, 27493d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2750b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 27513d14c5d2SYehuda Sadeh { 27523d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 27533d14c5d2SYehuda Sadeh int rc = 0; 27543d14c5d2SYehuda Sadeh 27553d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 27563d14c5d2SYehuda Sadeh vino.snap, off, *plen); 2757715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 27583d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 2759acead002SAlex Elder NULL, truncate_seq, truncate_size, 2760153e5167SAlex Elder false); 27616816282dSSage Weil if (IS_ERR(req)) 27626816282dSSage Weil return PTR_ERR(req); 27633d14c5d2SYehuda Sadeh 27643d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 27650fff87ecSAlex Elder 2766406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 2767a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 27683d14c5d2SYehuda Sadeh 2769e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 277043bfe5deSAlex Elder off, *plen, *plen, page_align); 27713d14c5d2SYehuda Sadeh 277279528734SAlex Elder ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); 277302ee07d3SAlex Elder 27743d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 27753d14c5d2SYehuda Sadeh if (!rc) 27763d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 27773d14c5d2SYehuda Sadeh 27783d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 27793d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 27803d14c5d2SYehuda Sadeh return rc; 27813d14c5d2SYehuda Sadeh } 27823d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 27833d14c5d2SYehuda Sadeh 27843d14c5d2SYehuda Sadeh /* 27853d14c5d2SYehuda Sadeh * do a synchronous write on N pages 27863d14c5d2SYehuda Sadeh */ 27873d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 27883d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 27893d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 27903d14c5d2SYehuda Sadeh u64 off, u64 len, 27913d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 27923d14c5d2SYehuda Sadeh struct timespec *mtime, 279324808826SAlex Elder struct page **pages, int num_pages) 27943d14c5d2SYehuda Sadeh { 27953d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 27963d14c5d2SYehuda Sadeh int rc = 0; 2797b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 27983d14c5d2SYehuda Sadeh 2799acead002SAlex Elder BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ 2800715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 28013d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 280224808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2803acead002SAlex Elder snapc, truncate_seq, truncate_size, 2804153e5167SAlex Elder true); 28056816282dSSage Weil if (IS_ERR(req)) 28066816282dSSage Weil return PTR_ERR(req); 28073d14c5d2SYehuda Sadeh 28083d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 2809406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 281043bfe5deSAlex Elder false, false); 281143bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 28123d14c5d2SYehuda Sadeh 281379528734SAlex Elder ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); 281402ee07d3SAlex Elder 281587f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 28163d14c5d2SYehuda Sadeh if (!rc) 28173d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 28183d14c5d2SYehuda Sadeh 28193d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 28203d14c5d2SYehuda Sadeh if (rc == 0) 28213d14c5d2SYehuda Sadeh rc = len; 28223d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 28233d14c5d2SYehuda Sadeh return rc; 28243d14c5d2SYehuda Sadeh } 28253d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 28263d14c5d2SYehuda Sadeh 28275522ae0bSAlex Elder int ceph_osdc_setup(void) 28285522ae0bSAlex Elder { 28293f1af42aSIlya Dryomov size_t size = sizeof(struct ceph_osd_request) + 28303f1af42aSIlya Dryomov CEPH_OSD_SLAB_OPS * sizeof(struct ceph_osd_req_op); 28313f1af42aSIlya Dryomov 28325522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 28333f1af42aSIlya Dryomov ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", size, 28343f1af42aSIlya Dryomov 0, 0, NULL); 28355522ae0bSAlex Elder 28365522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 28375522ae0bSAlex Elder } 28385522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 28395522ae0bSAlex Elder 28405522ae0bSAlex Elder void ceph_osdc_cleanup(void) 28415522ae0bSAlex Elder { 28425522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 28435522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 28445522ae0bSAlex Elder ceph_osd_request_cache = NULL; 28455522ae0bSAlex Elder } 28465522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 28475522ae0bSAlex Elder 28483d14c5d2SYehuda Sadeh /* 28493d14c5d2SYehuda Sadeh * handle incoming message 28503d14c5d2SYehuda Sadeh */ 28513d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 28523d14c5d2SYehuda Sadeh { 28533d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28543d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 28553d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 28563d14c5d2SYehuda Sadeh 28573d14c5d2SYehuda Sadeh if (!osd) 28583d14c5d2SYehuda Sadeh goto out; 28593d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 28603d14c5d2SYehuda Sadeh 28613d14c5d2SYehuda Sadeh switch (type) { 28623d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 28633d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 28643d14c5d2SYehuda Sadeh break; 28653d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 286670cf052dSShraddha Barke handle_reply(osdc, msg); 28673d14c5d2SYehuda Sadeh break; 2868a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2869a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2870a40c4f10SYehuda Sadeh break; 28713d14c5d2SYehuda Sadeh 28723d14c5d2SYehuda Sadeh default: 28733d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 28743d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 28753d14c5d2SYehuda Sadeh } 28763d14c5d2SYehuda Sadeh out: 28773d14c5d2SYehuda Sadeh ceph_msg_put(msg); 28783d14c5d2SYehuda Sadeh } 28793d14c5d2SYehuda Sadeh 28803d14c5d2SYehuda Sadeh /* 2881d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 2882d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 2883d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 28843d14c5d2SYehuda Sadeh */ 28853d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 28863d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 28873d14c5d2SYehuda Sadeh int *skip) 28883d14c5d2SYehuda Sadeh { 28893d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28903d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 28913d14c5d2SYehuda Sadeh struct ceph_msg *m; 28923d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 28933f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 28943d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 28953d14c5d2SYehuda Sadeh u64 tid; 28963d14c5d2SYehuda Sadeh 28973d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 28983d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 28993d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 29003d14c5d2SYehuda Sadeh if (!req) { 2901cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 2902cd8140c6SIlya Dryomov osd->o_osd, tid); 29033d14c5d2SYehuda Sadeh m = NULL; 2904d15f9d69SIlya Dryomov *skip = 1; 29053d14c5d2SYehuda Sadeh goto out; 29063d14c5d2SYehuda Sadeh } 29073d14c5d2SYehuda Sadeh 29088921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 29093d14c5d2SYehuda Sadeh 2910f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 2911d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 2912d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 2913d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 29143f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 29153f0a4ac5SIlya Dryomov false); 29163d14c5d2SYehuda Sadeh if (!m) 29173d14c5d2SYehuda Sadeh goto out; 29183d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 29193d14c5d2SYehuda Sadeh req->r_reply = m; 29203d14c5d2SYehuda Sadeh } 29213d14c5d2SYehuda Sadeh 2922d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 2923d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 2924d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 2925d15f9d69SIlya Dryomov req->r_reply->data_length); 29263d14c5d2SYehuda Sadeh m = NULL; 2927d15f9d69SIlya Dryomov *skip = 1; 29283d14c5d2SYehuda Sadeh goto out; 29293d14c5d2SYehuda Sadeh } 2930d15f9d69SIlya Dryomov 2931d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 29323d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 29333d14c5d2SYehuda Sadeh 29343d14c5d2SYehuda Sadeh out: 29353d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 29363d14c5d2SYehuda Sadeh return m; 29373d14c5d2SYehuda Sadeh } 29383d14c5d2SYehuda Sadeh 29393d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 29403d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 29413d14c5d2SYehuda Sadeh int *skip) 29423d14c5d2SYehuda Sadeh { 29433d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29443d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 29453d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 29463d14c5d2SYehuda Sadeh 29471c20f2d2SAlex Elder *skip = 0; 29483d14c5d2SYehuda Sadeh switch (type) { 29493d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2950a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2951b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 29523d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 29533d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 29543d14c5d2SYehuda Sadeh default: 29553d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 29563d14c5d2SYehuda Sadeh osd->o_osd); 29573d14c5d2SYehuda Sadeh *skip = 1; 29583d14c5d2SYehuda Sadeh return NULL; 29593d14c5d2SYehuda Sadeh } 29603d14c5d2SYehuda Sadeh } 29613d14c5d2SYehuda Sadeh 29623d14c5d2SYehuda Sadeh /* 29633d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 29643d14c5d2SYehuda Sadeh */ 29653d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 29663d14c5d2SYehuda Sadeh { 29673d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29683d14c5d2SYehuda Sadeh if (get_osd(osd)) 29693d14c5d2SYehuda Sadeh return con; 29703d14c5d2SYehuda Sadeh return NULL; 29713d14c5d2SYehuda Sadeh } 29723d14c5d2SYehuda Sadeh 29733d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 29743d14c5d2SYehuda Sadeh { 29753d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29763d14c5d2SYehuda Sadeh put_osd(osd); 29773d14c5d2SYehuda Sadeh } 29783d14c5d2SYehuda Sadeh 29793d14c5d2SYehuda Sadeh /* 29803d14c5d2SYehuda Sadeh * authentication 29813d14c5d2SYehuda Sadeh */ 2982a3530df3SAlex Elder /* 2983a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2984a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2985a3530df3SAlex Elder */ 2986a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 29878f43fb53SAlex Elder int *proto, int force_new) 29883d14c5d2SYehuda Sadeh { 29893d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 29903d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 29913d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 299274f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 29933d14c5d2SYehuda Sadeh 299474f1869fSAlex Elder if (force_new && auth->authorizer) { 29956c1ea260SIlya Dryomov ceph_auth_destroy_authorizer(auth->authorizer); 299674f1869fSAlex Elder auth->authorizer = NULL; 29973d14c5d2SYehuda Sadeh } 299827859f97SSage Weil if (!auth->authorizer) { 299927859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 3000a3530df3SAlex Elder auth); 30013d14c5d2SYehuda Sadeh if (ret) 3002a3530df3SAlex Elder return ERR_PTR(ret); 300327859f97SSage Weil } else { 300427859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 30050bed9b5cSSage Weil auth); 30060bed9b5cSSage Weil if (ret) 30070bed9b5cSSage Weil return ERR_PTR(ret); 30083d14c5d2SYehuda Sadeh } 30093d14c5d2SYehuda Sadeh *proto = ac->protocol; 301074f1869fSAlex Elder 3011a3530df3SAlex Elder return auth; 30123d14c5d2SYehuda Sadeh } 30133d14c5d2SYehuda Sadeh 30143d14c5d2SYehuda Sadeh 30153d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 30163d14c5d2SYehuda Sadeh { 30173d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 30183d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 30193d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 30203d14c5d2SYehuda Sadeh 302127859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 30223d14c5d2SYehuda Sadeh } 30233d14c5d2SYehuda Sadeh 30243d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 30253d14c5d2SYehuda Sadeh { 30263d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 30273d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 30283d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 30293d14c5d2SYehuda Sadeh 303027859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 30313d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 30323d14c5d2SYehuda Sadeh } 30333d14c5d2SYehuda Sadeh 303479dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 303533d07337SYan, Zheng { 303679dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 303733d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 303879dbd1baSIlya Dryomov 303933d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 304033d07337SYan, Zheng } 304133d07337SYan, Zheng 304279dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 304333d07337SYan, Zheng { 304479dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 304533d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 304679dbd1baSIlya Dryomov 304733d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 304833d07337SYan, Zheng } 304933d07337SYan, Zheng 30503d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 30513d14c5d2SYehuda Sadeh .get = get_osd_con, 30523d14c5d2SYehuda Sadeh .put = put_osd_con, 30533d14c5d2SYehuda Sadeh .dispatch = dispatch, 30543d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 30553d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 30563d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 30573d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 305879dbd1baSIlya Dryomov .sign_message = osd_sign_message, 305979dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 30603d14c5d2SYehuda Sadeh .fault = osd_reset, 30613d14c5d2SYehuda Sadeh }; 3062