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_OP_FRONT_LEN 4096 233d14c5d2SYehuda Sadeh #define OSD_OPREPLY_FRONT_LEN 512 243d14c5d2SYehuda Sadeh 255522ae0bSAlex Elder static struct kmem_cache *ceph_osd_request_cache; 265522ae0bSAlex Elder 273d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops; 283d14c5d2SYehuda Sadeh 29f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc); 306f6c7006SSage Weil static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd); 31a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 32a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 33a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 34a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 3556e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 36a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 373d14c5d2SYehuda Sadeh 383d14c5d2SYehuda Sadeh /* 393d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 403d14c5d2SYehuda Sadeh * 413d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 423d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 433d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 443d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 453d14c5d2SYehuda Sadeh * access to storage. 463d14c5d2SYehuda Sadeh * 473d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 483d14c5d2SYehuda Sadeh * are described by the osd map. 493d14c5d2SYehuda Sadeh * 503d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 513d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 523d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 533d14c5d2SYehuda Sadeh * channel with an OSD is reset. 543d14c5d2SYehuda Sadeh */ 553d14c5d2SYehuda Sadeh 563d14c5d2SYehuda Sadeh /* 573d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 583d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 593d14c5d2SYehuda Sadeh * object boundary. 603d14c5d2SYehuda Sadeh * 613d14c5d2SYehuda Sadeh * fill osd op in request message. 623d14c5d2SYehuda Sadeh */ 63dbe0fc41SAlex Elder static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 64a19dadfbSAlex Elder u64 *objnum, u64 *objoff, u64 *objlen) 653d14c5d2SYehuda Sadeh { 6660e56f13SAlex Elder u64 orig_len = *plen; 67d63b77f4SSage Weil int r; 683d14c5d2SYehuda Sadeh 6960e56f13SAlex Elder /* object extent? */ 7075d1c941SAlex Elder r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, 7175d1c941SAlex Elder objoff, objlen); 72d63b77f4SSage Weil if (r < 0) 73d63b77f4SSage Weil return r; 7475d1c941SAlex Elder if (*objlen < orig_len) { 7575d1c941SAlex Elder *plen = *objlen; 7660e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 7760e56f13SAlex Elder orig_len - *plen, off, *plen); 7860e56f13SAlex Elder } 7960e56f13SAlex Elder 8075d1c941SAlex Elder dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); 813d14c5d2SYehuda Sadeh 823ff5f385SAlex Elder return 0; 833d14c5d2SYehuda Sadeh } 843d14c5d2SYehuda Sadeh 85c54d47bfSAlex Elder static void ceph_osd_data_init(struct ceph_osd_data *osd_data) 86c54d47bfSAlex Elder { 87c54d47bfSAlex Elder memset(osd_data, 0, sizeof (*osd_data)); 88c54d47bfSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_NONE; 89c54d47bfSAlex Elder } 90c54d47bfSAlex Elder 91a4ce40a9SAlex Elder static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, 9243bfe5deSAlex Elder struct page **pages, u64 length, u32 alignment, 9343bfe5deSAlex Elder bool pages_from_pool, bool own_pages) 9443bfe5deSAlex Elder { 9543bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 9643bfe5deSAlex Elder osd_data->pages = pages; 9743bfe5deSAlex Elder osd_data->length = length; 9843bfe5deSAlex Elder osd_data->alignment = alignment; 9943bfe5deSAlex Elder osd_data->pages_from_pool = pages_from_pool; 10043bfe5deSAlex Elder osd_data->own_pages = own_pages; 10143bfe5deSAlex Elder } 10243bfe5deSAlex Elder 103a4ce40a9SAlex Elder static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, 10443bfe5deSAlex Elder struct ceph_pagelist *pagelist) 10543bfe5deSAlex Elder { 10643bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; 10743bfe5deSAlex Elder osd_data->pagelist = pagelist; 10843bfe5deSAlex Elder } 10943bfe5deSAlex Elder 11043bfe5deSAlex Elder #ifdef CONFIG_BLOCK 111a4ce40a9SAlex Elder static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, 11243bfe5deSAlex Elder struct bio *bio, size_t bio_length) 11343bfe5deSAlex Elder { 11443bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_BIO; 11543bfe5deSAlex Elder osd_data->bio = bio; 11643bfe5deSAlex Elder osd_data->bio_length = bio_length; 11743bfe5deSAlex Elder } 11843bfe5deSAlex Elder #endif /* CONFIG_BLOCK */ 11943bfe5deSAlex Elder 120863c7eb5SAlex Elder #define osd_req_op_data(oreq, whch, typ, fld) \ 121863c7eb5SAlex Elder ({ \ 122863c7eb5SAlex Elder BUG_ON(whch >= (oreq)->r_num_ops); \ 123863c7eb5SAlex Elder &(oreq)->r_ops[whch].typ.fld; \ 124863c7eb5SAlex Elder }) 125863c7eb5SAlex Elder 12649719778SAlex Elder static struct ceph_osd_data * 12749719778SAlex Elder osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) 12849719778SAlex Elder { 12949719778SAlex Elder BUG_ON(which >= osd_req->r_num_ops); 13049719778SAlex Elder 13149719778SAlex Elder return &osd_req->r_ops[which].raw_data_in; 13249719778SAlex Elder } 13349719778SAlex Elder 134a4ce40a9SAlex Elder struct ceph_osd_data * 135a4ce40a9SAlex Elder osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, 136406e2c9fSAlex Elder unsigned int which) 137a4ce40a9SAlex Elder { 138863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, extent, osd_data); 139a4ce40a9SAlex Elder } 140a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data); 141a4ce40a9SAlex Elder 142a4ce40a9SAlex Elder struct ceph_osd_data * 143a4ce40a9SAlex Elder osd_req_op_cls_response_data(struct ceph_osd_request *osd_req, 144a4ce40a9SAlex Elder unsigned int which) 145a4ce40a9SAlex Elder { 146863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, cls, response_data); 147a4ce40a9SAlex Elder } 148a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data); /* ??? */ 149a4ce40a9SAlex Elder 15049719778SAlex Elder void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, 15149719778SAlex Elder unsigned int which, struct page **pages, 15249719778SAlex Elder u64 length, u32 alignment, 15349719778SAlex Elder bool pages_from_pool, bool own_pages) 15449719778SAlex Elder { 15549719778SAlex Elder struct ceph_osd_data *osd_data; 15649719778SAlex Elder 15749719778SAlex Elder osd_data = osd_req_op_raw_data_in(osd_req, which); 15849719778SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 15949719778SAlex Elder pages_from_pool, own_pages); 16049719778SAlex Elder } 16149719778SAlex Elder EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); 16249719778SAlex Elder 163a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, 164406e2c9fSAlex Elder unsigned int which, struct page **pages, 165406e2c9fSAlex Elder u64 length, u32 alignment, 166a4ce40a9SAlex Elder bool pages_from_pool, bool own_pages) 167a4ce40a9SAlex Elder { 168a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 169a4ce40a9SAlex Elder 170863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 171a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 172a4ce40a9SAlex Elder pages_from_pool, own_pages); 173a4ce40a9SAlex Elder } 174a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); 175a4ce40a9SAlex Elder 176a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, 177406e2c9fSAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 178a4ce40a9SAlex Elder { 179a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 180a4ce40a9SAlex Elder 181863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 182a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 183a4ce40a9SAlex Elder } 184a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); 185a4ce40a9SAlex Elder 186a4ce40a9SAlex Elder #ifdef CONFIG_BLOCK 187a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, 188406e2c9fSAlex Elder unsigned int which, struct bio *bio, size_t bio_length) 189a4ce40a9SAlex Elder { 190a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 191863c7eb5SAlex Elder 192863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 193a4ce40a9SAlex Elder ceph_osd_data_bio_init(osd_data, bio, bio_length); 194a4ce40a9SAlex Elder } 195a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); 196a4ce40a9SAlex Elder #endif /* CONFIG_BLOCK */ 197a4ce40a9SAlex Elder 198a4ce40a9SAlex Elder static void osd_req_op_cls_request_info_pagelist( 199a4ce40a9SAlex Elder struct ceph_osd_request *osd_req, 200a4ce40a9SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 201a4ce40a9SAlex Elder { 202a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 203a4ce40a9SAlex Elder 204863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_info); 205a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 206a4ce40a9SAlex Elder } 207a4ce40a9SAlex Elder 20804017e29SAlex Elder void osd_req_op_cls_request_data_pagelist( 20904017e29SAlex Elder struct ceph_osd_request *osd_req, 21004017e29SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 21104017e29SAlex Elder { 21204017e29SAlex Elder struct ceph_osd_data *osd_data; 21304017e29SAlex Elder 214863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 21504017e29SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 21604017e29SAlex Elder } 21704017e29SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); 21804017e29SAlex Elder 2196c57b554SAlex Elder void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, 2206c57b554SAlex Elder unsigned int which, struct page **pages, u64 length, 2216c57b554SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 2226c57b554SAlex Elder { 2236c57b554SAlex Elder struct ceph_osd_data *osd_data; 2246c57b554SAlex Elder 2256c57b554SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 2266c57b554SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 2276c57b554SAlex Elder pages_from_pool, own_pages); 2286c57b554SAlex Elder } 2296c57b554SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); 2306c57b554SAlex Elder 231a4ce40a9SAlex Elder void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, 232a4ce40a9SAlex Elder unsigned int which, struct page **pages, u64 length, 233a4ce40a9SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 234a4ce40a9SAlex Elder { 235a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 236a4ce40a9SAlex Elder 237863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, response_data); 238a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 239a4ce40a9SAlex Elder pages_from_pool, own_pages); 240a4ce40a9SAlex Elder } 241a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); 242a4ce40a9SAlex Elder 24323c08a9cSAlex Elder static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) 24423c08a9cSAlex Elder { 24523c08a9cSAlex Elder switch (osd_data->type) { 24623c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_NONE: 24723c08a9cSAlex Elder return 0; 24823c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGES: 24923c08a9cSAlex Elder return osd_data->length; 25023c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGELIST: 25123c08a9cSAlex Elder return (u64)osd_data->pagelist->length; 25223c08a9cSAlex Elder #ifdef CONFIG_BLOCK 25323c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_BIO: 25423c08a9cSAlex Elder return (u64)osd_data->bio_length; 25523c08a9cSAlex Elder #endif /* CONFIG_BLOCK */ 25623c08a9cSAlex Elder default: 25723c08a9cSAlex Elder WARN(true, "unrecognized data type %d\n", (int)osd_data->type); 25823c08a9cSAlex Elder return 0; 25923c08a9cSAlex Elder } 26023c08a9cSAlex Elder } 26123c08a9cSAlex Elder 262c54d47bfSAlex Elder static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 263c54d47bfSAlex Elder { 2645476492fSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { 265c54d47bfSAlex Elder int num_pages; 266c54d47bfSAlex Elder 267c54d47bfSAlex Elder num_pages = calc_pages_for((u64)osd_data->alignment, 268c54d47bfSAlex Elder (u64)osd_data->length); 269c54d47bfSAlex Elder ceph_release_page_vector(osd_data->pages, num_pages); 270c54d47bfSAlex Elder } 2715476492fSAlex Elder ceph_osd_data_init(osd_data); 2725476492fSAlex Elder } 2735476492fSAlex Elder 2745476492fSAlex Elder static void osd_req_op_data_release(struct ceph_osd_request *osd_req, 2755476492fSAlex Elder unsigned int which) 2765476492fSAlex Elder { 2775476492fSAlex Elder struct ceph_osd_req_op *op; 2785476492fSAlex Elder 2795476492fSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 2805476492fSAlex Elder op = &osd_req->r_ops[which]; 2815476492fSAlex Elder 2825476492fSAlex Elder switch (op->op) { 2835476492fSAlex Elder case CEPH_OSD_OP_READ: 2845476492fSAlex Elder case CEPH_OSD_OP_WRITE: 2855476492fSAlex Elder ceph_osd_data_release(&op->extent.osd_data); 2865476492fSAlex Elder break; 2875476492fSAlex Elder case CEPH_OSD_OP_CALL: 2885476492fSAlex Elder ceph_osd_data_release(&op->cls.request_info); 28904017e29SAlex Elder ceph_osd_data_release(&op->cls.request_data); 2905476492fSAlex Elder ceph_osd_data_release(&op->cls.response_data); 2915476492fSAlex Elder break; 2925476492fSAlex Elder default: 2935476492fSAlex Elder break; 2945476492fSAlex Elder } 295c54d47bfSAlex Elder } 296c54d47bfSAlex Elder 2973d14c5d2SYehuda Sadeh /* 2983d14c5d2SYehuda Sadeh * requests 2993d14c5d2SYehuda Sadeh */ 3009e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 3013d14c5d2SYehuda Sadeh { 3029e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 3039e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 3045476492fSAlex Elder unsigned int which; 3053d14c5d2SYehuda Sadeh 3069e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 3079e94af20SIlya Dryomov req->r_request, req->r_reply); 3089e94af20SIlya Dryomov 3093d14c5d2SYehuda Sadeh if (req->r_request) 3103d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 311ace6d3a9SAlex Elder if (req->r_reply) { 3128921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 313ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 314ace6d3a9SAlex Elder } 3150fff87ecSAlex Elder 3165476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 3175476492fSAlex Elder osd_req_op_data_release(req, which); 3180fff87ecSAlex Elder 3193d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 3203d14c5d2SYehuda Sadeh if (req->r_mempool) 3213d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 3223d14c5d2SYehuda Sadeh else 3235522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 3245522ae0bSAlex Elder 3253d14c5d2SYehuda Sadeh } 3269e94af20SIlya Dryomov 3279e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 3289e94af20SIlya Dryomov { 3299e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3309e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3319e94af20SIlya Dryomov kref_get(&req->r_kref); 3329e94af20SIlya Dryomov } 3339e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 3349e94af20SIlya Dryomov 3359e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 3369e94af20SIlya Dryomov { 3379e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3389e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3399e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 3409e94af20SIlya Dryomov } 3419e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 3423d14c5d2SYehuda Sadeh 3433d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 3443d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 3451b83bef2SSage Weil unsigned int num_ops, 3463d14c5d2SYehuda Sadeh bool use_mempool, 34754a54007SAlex Elder gfp_t gfp_flags) 3483d14c5d2SYehuda Sadeh { 3493d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 3503d14c5d2SYehuda Sadeh struct ceph_msg *msg; 3511b83bef2SSage Weil size_t msg_size; 3523d14c5d2SYehuda Sadeh 35379528734SAlex Elder BUILD_BUG_ON(CEPH_OSD_MAX_OP > U16_MAX); 35479528734SAlex Elder BUG_ON(num_ops > CEPH_OSD_MAX_OP); 35579528734SAlex Elder 3561b83bef2SSage Weil msg_size = 4 + 4 + 8 + 8 + 4+8; 3571b83bef2SSage Weil msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 3581b83bef2SSage Weil msg_size += 1 + 8 + 4 + 4; /* pg_t */ 3592d0ebc5dSIlya Dryomov msg_size += 4 + CEPH_MAX_OID_NAME_LEN; /* oid */ 3601b83bef2SSage Weil msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); 3611b83bef2SSage Weil msg_size += 8; /* snapid */ 3621b83bef2SSage Weil msg_size += 8; /* snap_seq */ 3631b83bef2SSage Weil msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ 3641b83bef2SSage Weil msg_size += 4; 3653d14c5d2SYehuda Sadeh 3663d14c5d2SYehuda Sadeh if (use_mempool) { 3673d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 3683d14c5d2SYehuda Sadeh memset(req, 0, sizeof(*req)); 3693d14c5d2SYehuda Sadeh } else { 3705522ae0bSAlex Elder req = kmem_cache_zalloc(ceph_osd_request_cache, gfp_flags); 3713d14c5d2SYehuda Sadeh } 3723d14c5d2SYehuda Sadeh if (req == NULL) 3733d14c5d2SYehuda Sadeh return NULL; 3743d14c5d2SYehuda Sadeh 3753d14c5d2SYehuda Sadeh req->r_osdc = osdc; 3763d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 37779528734SAlex Elder req->r_num_ops = num_ops; 3783d14c5d2SYehuda Sadeh 3793d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 3803d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 3813d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 382a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 3833d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 384a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 3851d0326b1SIlya Dryomov INIT_LIST_HEAD(&req->r_linger_osd_item); 386935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 387cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 388cd43045cSSage Weil 3893c972c95SIlya Dryomov req->r_base_oloc.pool = -1; 390205ee118SIlya Dryomov req->r_target_oloc.pool = -1; 39122116525SIlya Dryomov 3923d14c5d2SYehuda Sadeh /* create reply message */ 3933d14c5d2SYehuda Sadeh if (use_mempool) 3943d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 3953d14c5d2SYehuda Sadeh else 3963d14c5d2SYehuda Sadeh msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, 397b61c2763SSage Weil OSD_OPREPLY_FRONT_LEN, gfp_flags, true); 3983d14c5d2SYehuda Sadeh if (!msg) { 3993d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 4003d14c5d2SYehuda Sadeh return NULL; 4013d14c5d2SYehuda Sadeh } 4023d14c5d2SYehuda Sadeh req->r_reply = msg; 4033d14c5d2SYehuda Sadeh 4043d14c5d2SYehuda Sadeh /* create request message; allow space for oid */ 4053d14c5d2SYehuda Sadeh if (use_mempool) 4063d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 4073d14c5d2SYehuda Sadeh else 408b61c2763SSage Weil msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); 4093d14c5d2SYehuda Sadeh if (!msg) { 4103d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 4113d14c5d2SYehuda Sadeh return NULL; 4123d14c5d2SYehuda Sadeh } 4133d14c5d2SYehuda Sadeh 4143d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 4153d14c5d2SYehuda Sadeh 4163d14c5d2SYehuda Sadeh req->r_request = msg; 4173d14c5d2SYehuda Sadeh 4183d14c5d2SYehuda Sadeh return req; 4193d14c5d2SYehuda Sadeh } 4203d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_alloc_request); 4213d14c5d2SYehuda Sadeh 422a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 423a8dd0a37SAlex Elder { 424a8dd0a37SAlex Elder switch (opcode) { 425a8dd0a37SAlex Elder case CEPH_OSD_OP_READ: 426a8dd0a37SAlex Elder case CEPH_OSD_OP_STAT: 427a8dd0a37SAlex Elder case CEPH_OSD_OP_MAPEXT: 428a8dd0a37SAlex Elder case CEPH_OSD_OP_MASKTRUNC: 429a8dd0a37SAlex Elder case CEPH_OSD_OP_SPARSE_READ: 430a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY: 431a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY_ACK: 432a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_VER: 433a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITE: 434a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITEFULL: 435a8dd0a37SAlex Elder case CEPH_OSD_OP_TRUNCATE: 436a8dd0a37SAlex Elder case CEPH_OSD_OP_ZERO: 437a8dd0a37SAlex Elder case CEPH_OSD_OP_DELETE: 438a8dd0a37SAlex Elder case CEPH_OSD_OP_APPEND: 439a8dd0a37SAlex Elder case CEPH_OSD_OP_STARTSYNC: 440a8dd0a37SAlex Elder case CEPH_OSD_OP_SETTRUNC: 441a8dd0a37SAlex Elder case CEPH_OSD_OP_TRIMTRUNC: 442a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPUP: 443a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPPUT: 444a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPGET: 445a8dd0a37SAlex Elder case CEPH_OSD_OP_CREATE: 446a8dd0a37SAlex Elder case CEPH_OSD_OP_ROLLBACK: 447a8dd0a37SAlex Elder case CEPH_OSD_OP_WATCH: 448a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETKEYS: 449a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALS: 450a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETHEADER: 451a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALSBYKEYS: 452a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETVALS: 453a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETHEADER: 454a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPCLEAR: 455a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPRMKEYS: 456a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAP_CMP: 457c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 458a8dd0a37SAlex Elder case CEPH_OSD_OP_CLONERANGE: 459a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_SRC_VERSION: 460a8dd0a37SAlex Elder case CEPH_OSD_OP_SRC_CMPXATTR: 461a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTR: 462a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTRS: 463a8dd0a37SAlex Elder case CEPH_OSD_OP_CMPXATTR: 464a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTR: 465a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTRS: 466a8dd0a37SAlex Elder case CEPH_OSD_OP_RESETXATTRS: 467a8dd0a37SAlex Elder case CEPH_OSD_OP_RMXATTR: 468a8dd0a37SAlex Elder case CEPH_OSD_OP_PULL: 469a8dd0a37SAlex Elder case CEPH_OSD_OP_PUSH: 470a8dd0a37SAlex Elder case CEPH_OSD_OP_BALANCEREADS: 471a8dd0a37SAlex Elder case CEPH_OSD_OP_UNBALANCEREADS: 472a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB: 473a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_RESERVE: 474a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_UNRESERVE: 475a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_STOP: 476a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_MAP: 477a8dd0a37SAlex Elder case CEPH_OSD_OP_WRLOCK: 478a8dd0a37SAlex Elder case CEPH_OSD_OP_WRUNLOCK: 479a8dd0a37SAlex Elder case CEPH_OSD_OP_RDLOCK: 480a8dd0a37SAlex Elder case CEPH_OSD_OP_RDUNLOCK: 481a8dd0a37SAlex Elder case CEPH_OSD_OP_UPLOCK: 482a8dd0a37SAlex Elder case CEPH_OSD_OP_DNLOCK: 483a8dd0a37SAlex Elder case CEPH_OSD_OP_CALL: 484a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS: 485a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS_FILTER: 486a8dd0a37SAlex Elder return true; 487a8dd0a37SAlex Elder default: 488a8dd0a37SAlex Elder return false; 489a8dd0a37SAlex Elder } 490a8dd0a37SAlex Elder } 491a8dd0a37SAlex Elder 49233803f33SAlex Elder /* 49333803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 49433803f33SAlex Elder * other information associated with them. It also serves as a 49533803f33SAlex Elder * common init routine for all the other init functions, below. 49633803f33SAlex Elder */ 497c99d2d4aSAlex Elder static struct ceph_osd_req_op * 49849719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 499c99d2d4aSAlex Elder u16 opcode) 50033803f33SAlex Elder { 501c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 502c99d2d4aSAlex Elder 503c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 50433803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 50533803f33SAlex Elder 506c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 50733803f33SAlex Elder memset(op, 0, sizeof (*op)); 50833803f33SAlex Elder op->op = opcode; 509c99d2d4aSAlex Elder 510c99d2d4aSAlex Elder return op; 51133803f33SAlex Elder } 51233803f33SAlex Elder 51349719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 51449719778SAlex Elder unsigned int which, u16 opcode) 51549719778SAlex Elder { 51649719778SAlex Elder (void)_osd_req_op_init(osd_req, which, opcode); 51749719778SAlex Elder } 51849719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 51949719778SAlex Elder 520c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 521c99d2d4aSAlex Elder unsigned int which, u16 opcode, 52233803f33SAlex Elder u64 offset, u64 length, 52333803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 52433803f33SAlex Elder { 52549719778SAlex Elder struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); 52633803f33SAlex Elder size_t payload_len = 0; 52733803f33SAlex Elder 528ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 529ad7a60deSLi Wang opcode != CEPH_OSD_OP_DELETE && opcode != CEPH_OSD_OP_ZERO && 530ad7a60deSLi Wang opcode != CEPH_OSD_OP_TRUNCATE); 53133803f33SAlex Elder 53233803f33SAlex Elder op->extent.offset = offset; 53333803f33SAlex Elder op->extent.length = length; 53433803f33SAlex Elder op->extent.truncate_size = truncate_size; 53533803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 53633803f33SAlex Elder if (opcode == CEPH_OSD_OP_WRITE) 53733803f33SAlex Elder payload_len += length; 53833803f33SAlex Elder 53933803f33SAlex Elder op->payload_len = payload_len; 54033803f33SAlex Elder } 54133803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 54233803f33SAlex Elder 543c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 544c99d2d4aSAlex Elder unsigned int which, u64 length) 545e5975c7cSAlex Elder { 546c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 547c99d2d4aSAlex Elder u64 previous; 548c99d2d4aSAlex Elder 549c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 550c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 551c99d2d4aSAlex Elder previous = op->extent.length; 552e5975c7cSAlex Elder 553e5975c7cSAlex Elder if (length == previous) 554e5975c7cSAlex Elder return; /* Nothing to do */ 555e5975c7cSAlex Elder BUG_ON(length > previous); 556e5975c7cSAlex Elder 557e5975c7cSAlex Elder op->extent.length = length; 558e5975c7cSAlex Elder op->payload_len -= previous - length; 559e5975c7cSAlex Elder } 560e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 561e5975c7cSAlex Elder 562c99d2d4aSAlex Elder void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 56304017e29SAlex Elder u16 opcode, const char *class, const char *method) 56433803f33SAlex Elder { 56549719778SAlex Elder struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); 5665f562df5SAlex Elder struct ceph_pagelist *pagelist; 56733803f33SAlex Elder size_t payload_len = 0; 56833803f33SAlex Elder size_t size; 56933803f33SAlex Elder 57033803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 57133803f33SAlex Elder 5725f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 5735f562df5SAlex Elder BUG_ON(!pagelist); 5745f562df5SAlex Elder ceph_pagelist_init(pagelist); 5755f562df5SAlex Elder 57633803f33SAlex Elder op->cls.class_name = class; 57733803f33SAlex Elder size = strlen(class); 57833803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 57933803f33SAlex Elder op->cls.class_len = size; 5805f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 58133803f33SAlex Elder payload_len += size; 58233803f33SAlex Elder 58333803f33SAlex Elder op->cls.method_name = method; 58433803f33SAlex Elder size = strlen(method); 58533803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 58633803f33SAlex Elder op->cls.method_len = size; 5875f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 58833803f33SAlex Elder payload_len += size; 58933803f33SAlex Elder 590a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 5915f562df5SAlex Elder 59233803f33SAlex Elder op->cls.argc = 0; /* currently unused */ 59333803f33SAlex Elder 59433803f33SAlex Elder op->payload_len = payload_len; 59533803f33SAlex Elder } 59633803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 5978c042b0dSAlex Elder 598c99d2d4aSAlex Elder void osd_req_op_watch_init(struct ceph_osd_request *osd_req, 599c99d2d4aSAlex Elder unsigned int which, u16 opcode, 60033803f33SAlex Elder u64 cookie, u64 version, int flag) 60133803f33SAlex Elder { 60249719778SAlex Elder struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); 60333803f33SAlex Elder 604c99d2d4aSAlex Elder BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 60533803f33SAlex Elder 60633803f33SAlex Elder op->watch.cookie = cookie; 6079ef1ee5aSAlex Elder op->watch.ver = version; 60833803f33SAlex Elder if (opcode == CEPH_OSD_OP_WATCH && flag) 60933803f33SAlex Elder op->watch.flag = (u8)1; 61033803f33SAlex Elder } 61133803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_watch_init); 61233803f33SAlex Elder 613c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 614c647b8a8SIlya Dryomov unsigned int which, 615c647b8a8SIlya Dryomov u64 expected_object_size, 616c647b8a8SIlya Dryomov u64 expected_write_size) 617c647b8a8SIlya Dryomov { 618c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 619c647b8a8SIlya Dryomov CEPH_OSD_OP_SETALLOCHINT); 620c647b8a8SIlya Dryomov 621c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 622c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 623c647b8a8SIlya Dryomov 624c647b8a8SIlya Dryomov /* 625c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 626c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 627c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 628c647b8a8SIlya Dryomov */ 629c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 630c647b8a8SIlya Dryomov } 631c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 632c647b8a8SIlya Dryomov 63390af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 634ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 635ec9123c5SAlex Elder { 636ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 637ec9123c5SAlex Elder 638ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 639ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 640ec9123c5SAlex Elder if (length) 64190af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 642ec9123c5SAlex Elder length, osd_data->alignment); 643ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 644ec9123c5SAlex Elder BUG_ON(!length); 64590af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 646ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 647ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 64890af3602SAlex Elder ceph_msg_data_add_bio(msg, osd_data->bio, length); 649ec9123c5SAlex Elder #endif 650ec9123c5SAlex Elder } else { 651ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 652ec9123c5SAlex Elder } 653ec9123c5SAlex Elder } 654ec9123c5SAlex Elder 655175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 65679528734SAlex Elder struct ceph_osd_op *dst, unsigned int which) 6573d14c5d2SYehuda Sadeh { 65879528734SAlex Elder struct ceph_osd_req_op *src; 65904017e29SAlex Elder struct ceph_osd_data *osd_data; 66054d50649SAlex Elder u64 request_data_len = 0; 66104017e29SAlex Elder u64 data_length; 662175face2SAlex Elder 66379528734SAlex Elder BUG_ON(which >= req->r_num_ops); 66479528734SAlex Elder src = &req->r_ops[which]; 665a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 666a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 667a8dd0a37SAlex Elder 668a8dd0a37SAlex Elder return 0; 669a8dd0a37SAlex Elder } 6703d14c5d2SYehuda Sadeh 671065a68f9SAlex Elder switch (src->op) { 672fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 67349719778SAlex Elder osd_data = &src->raw_data_in; 67449719778SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 675fbfab539SAlex Elder break; 6763d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 6773d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 678ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 679ad7a60deSLi Wang case CEPH_OSD_OP_DELETE: 680ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 681175face2SAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 68254d50649SAlex Elder request_data_len = src->extent.length; 683175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 684175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 6853d14c5d2SYehuda Sadeh dst->extent.truncate_size = 6863d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 6873d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 6883d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 68904017e29SAlex Elder osd_data = &src->extent.osd_data; 6905476492fSAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 69104017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 6925476492fSAlex Elder else 69304017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 6943d14c5d2SYehuda Sadeh break; 6953d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 6963d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 6973d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 69804017e29SAlex Elder osd_data = &src->cls.request_info; 69904017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 70004017e29SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); 70104017e29SAlex Elder request_data_len = osd_data->pagelist->length; 70204017e29SAlex Elder 70304017e29SAlex Elder osd_data = &src->cls.request_data; 70404017e29SAlex Elder data_length = ceph_osd_data_length(osd_data); 70504017e29SAlex Elder if (data_length) { 70604017e29SAlex Elder BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); 70704017e29SAlex Elder dst->cls.indata_len = cpu_to_le32(data_length); 70804017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 70904017e29SAlex Elder src->payload_len += data_length; 71004017e29SAlex Elder request_data_len += data_length; 71104017e29SAlex Elder } 71204017e29SAlex Elder osd_data = &src->cls.response_data; 71304017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 7143d14c5d2SYehuda Sadeh break; 7153d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 7163d14c5d2SYehuda Sadeh break; 717a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 718a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 719a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 720a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 721a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 722a40c4f10SYehuda Sadeh break; 723c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 724c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 725c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 726c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 727c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 728c647b8a8SIlya Dryomov break; 7293d14c5d2SYehuda Sadeh default: 7304c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 7318f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 7324c46459cSAlex Elder WARN_ON(1); 733a8dd0a37SAlex Elder 734a8dd0a37SAlex Elder return 0; 7353d14c5d2SYehuda Sadeh } 7367b25bf5fSIlya Dryomov 737a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 7387b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 7393d14c5d2SYehuda Sadeh dst->payload_len = cpu_to_le32(src->payload_len); 740175face2SAlex Elder 74154d50649SAlex Elder return request_data_len; 7423d14c5d2SYehuda Sadeh } 7433d14c5d2SYehuda Sadeh 7443d14c5d2SYehuda Sadeh /* 7453d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 7463d14c5d2SYehuda Sadeh * extent as needed. 7473d14c5d2SYehuda Sadeh * 7483d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 7493d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 7503d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 7513d14c5d2SYehuda Sadeh * 7523d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 7533d14c5d2SYehuda Sadeh * data quickly. 7543d14c5d2SYehuda Sadeh */ 7553d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 7563d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 7573d14c5d2SYehuda Sadeh struct ceph_vino vino, 758acead002SAlex Elder u64 off, u64 *plen, int num_ops, 7593d14c5d2SYehuda Sadeh int opcode, int flags, 7603d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 7613d14c5d2SYehuda Sadeh u32 truncate_seq, 7623d14c5d2SYehuda Sadeh u64 truncate_size, 763153e5167SAlex Elder bool use_mempool) 7643d14c5d2SYehuda Sadeh { 7653d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 76675d1c941SAlex Elder u64 objnum = 0; 76775d1c941SAlex Elder u64 objoff = 0; 76875d1c941SAlex Elder u64 objlen = 0; 769d18d1e28SAlex Elder u32 object_size; 770d18d1e28SAlex Elder u64 object_base; 7716816282dSSage Weil int r; 7723d14c5d2SYehuda Sadeh 773ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 774ad7a60deSLi Wang opcode != CEPH_OSD_OP_DELETE && opcode != CEPH_OSD_OP_ZERO && 775ad7a60deSLi Wang opcode != CEPH_OSD_OP_TRUNCATE); 7763d14c5d2SYehuda Sadeh 777acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 778ae7ca4a3SAlex Elder GFP_NOFS); 7794ad12621SSage Weil if (!req) 7806816282dSSage Weil return ERR_PTR(-ENOMEM); 78179528734SAlex Elder 782d178a9e7SAlex Elder req->r_flags = flags; 7833d14c5d2SYehuda Sadeh 7843d14c5d2SYehuda Sadeh /* calculate max write size */ 785a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 7863ff5f385SAlex Elder if (r < 0) { 7873ff5f385SAlex Elder ceph_osdc_put_request(req); 7886816282dSSage Weil return ERR_PTR(r); 7893ff5f385SAlex Elder } 790a19dadfbSAlex Elder 791d18d1e28SAlex Elder object_size = le32_to_cpu(layout->fl_object_size); 792d18d1e28SAlex Elder object_base = off - objoff; 793ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 794d18d1e28SAlex Elder if (truncate_size <= object_base) { 795d18d1e28SAlex Elder truncate_size = 0; 796d18d1e28SAlex Elder } else { 797d18d1e28SAlex Elder truncate_size -= object_base; 798d18d1e28SAlex Elder if (truncate_size > object_size) 799d18d1e28SAlex Elder truncate_size = object_size; 800d18d1e28SAlex Elder } 801ccca4e37SYan, Zheng } 802d18d1e28SAlex Elder 803c99d2d4aSAlex Elder osd_req_op_extent_init(req, 0, opcode, objoff, objlen, 804b0270324SAlex Elder truncate_size, truncate_seq); 8058c042b0dSAlex Elder 806acead002SAlex Elder /* 807acead002SAlex Elder * A second op in the ops array means the caller wants to 808acead002SAlex Elder * also issue a include a 'startsync' command so that the 809acead002SAlex Elder * osd will flush data quickly. 810acead002SAlex Elder */ 811acead002SAlex Elder if (num_ops > 1) 812c99d2d4aSAlex Elder osd_req_op_init(req, 1, CEPH_OSD_OP_STARTSYNC); 813d18d1e28SAlex Elder 8143c972c95SIlya Dryomov req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); 8153d14c5d2SYehuda Sadeh 8163c972c95SIlya Dryomov snprintf(req->r_base_oid.name, sizeof(req->r_base_oid.name), 8174295f221SIlya Dryomov "%llx.%08llx", vino.ino, objnum); 8183c972c95SIlya Dryomov req->r_base_oid.name_len = strlen(req->r_base_oid.name); 819dbe0fc41SAlex Elder 8203d14c5d2SYehuda Sadeh return req; 8213d14c5d2SYehuda Sadeh } 8223d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 8233d14c5d2SYehuda Sadeh 8243d14c5d2SYehuda Sadeh /* 8253d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 8263d14c5d2SYehuda Sadeh */ 8273d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 8283d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 8293d14c5d2SYehuda Sadeh { 8303d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 8313d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 8323d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 8333d14c5d2SYehuda Sadeh 8343d14c5d2SYehuda Sadeh while (*p) { 8353d14c5d2SYehuda Sadeh parent = *p; 8363d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 8373d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 8383d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 8393d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 8403d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 8413d14c5d2SYehuda Sadeh else 8423d14c5d2SYehuda Sadeh BUG(); 8433d14c5d2SYehuda Sadeh } 8443d14c5d2SYehuda Sadeh 8453d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 8463d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 8473d14c5d2SYehuda Sadeh } 8483d14c5d2SYehuda Sadeh 8493d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 8503d14c5d2SYehuda Sadeh u64 tid) 8513d14c5d2SYehuda Sadeh { 8523d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 8533d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 8543d14c5d2SYehuda Sadeh 8553d14c5d2SYehuda Sadeh while (n) { 8563d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 8573d14c5d2SYehuda Sadeh if (tid < req->r_tid) 8583d14c5d2SYehuda Sadeh n = n->rb_left; 8593d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 8603d14c5d2SYehuda Sadeh n = n->rb_right; 8613d14c5d2SYehuda Sadeh else 8623d14c5d2SYehuda Sadeh return req; 8633d14c5d2SYehuda Sadeh } 8643d14c5d2SYehuda Sadeh return NULL; 8653d14c5d2SYehuda Sadeh } 8663d14c5d2SYehuda Sadeh 8673d14c5d2SYehuda Sadeh static struct ceph_osd_request * 8683d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 8693d14c5d2SYehuda Sadeh u64 tid) 8703d14c5d2SYehuda Sadeh { 8713d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 8723d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 8733d14c5d2SYehuda Sadeh 8743d14c5d2SYehuda Sadeh while (n) { 8753d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 8763d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 8773d14c5d2SYehuda Sadeh if (!n->rb_left) 8783d14c5d2SYehuda Sadeh return req; 8793d14c5d2SYehuda Sadeh n = n->rb_left; 8803d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 8813d14c5d2SYehuda Sadeh n = n->rb_right; 8823d14c5d2SYehuda Sadeh } else { 8833d14c5d2SYehuda Sadeh return req; 8843d14c5d2SYehuda Sadeh } 8853d14c5d2SYehuda Sadeh } 8863d14c5d2SYehuda Sadeh return NULL; 8873d14c5d2SYehuda Sadeh } 8883d14c5d2SYehuda Sadeh 8896f6c7006SSage Weil /* 8906f6c7006SSage Weil * Resubmit requests pending on the given osd. 8916f6c7006SSage Weil */ 8926f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 8936f6c7006SSage Weil struct ceph_osd *osd) 8946f6c7006SSage Weil { 895a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 896e02493c0SAlex Elder LIST_HEAD(resend); 8976f6c7006SSage Weil int err; 8986f6c7006SSage Weil 8996f6c7006SSage Weil dout("__kick_osd_requests osd%d\n", osd->o_osd); 9006f6c7006SSage Weil err = __reset_osd(osdc, osd); 901685a7555SAlex Elder if (err) 9026f6c7006SSage Weil return; 903e02493c0SAlex Elder /* 904e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 905e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 906e02493c0SAlex Elder * sent in tid order, and that is also the order they're 907e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 908e02493c0SAlex Elder * flight will be found first, followed by all requests that 909e02493c0SAlex Elder * have not yet been sent. And to resend requests while 910e02493c0SAlex Elder * preserving this order we will want to put any sent 911e02493c0SAlex Elder * requests back on the front of the osd client's unsent 912e02493c0SAlex Elder * list. 913e02493c0SAlex Elder * 914e02493c0SAlex Elder * So we build a separate ordered list of already-sent 915e02493c0SAlex Elder * requests for the affected osd and splice it onto the 916e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 917e02493c0SAlex Elder * request that has not yet been sent we're done. Those 918e02493c0SAlex Elder * requests are already sitting right where they belong. 919e02493c0SAlex Elder */ 9206f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 921e02493c0SAlex Elder if (!req->r_sent) 922e02493c0SAlex Elder break; 923e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 924e02493c0SAlex Elder dout("requeueing %p tid %llu osd%d\n", req, req->r_tid, 9256f6c7006SSage Weil osd->o_osd); 926a40c4f10SYehuda Sadeh if (!req->r_linger) 9276f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 9286f6c7006SSage Weil } 929e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 930a40c4f10SYehuda Sadeh 931e02493c0SAlex Elder /* 932e02493c0SAlex Elder * Linger requests are re-registered before sending, which 933e02493c0SAlex Elder * sets up a new tid for each. We add them to the unsent 934e02493c0SAlex Elder * list at the end to keep things in tid order. 935e02493c0SAlex Elder */ 936a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 9371d0326b1SIlya Dryomov r_linger_osd_item) { 93877f38e0eSSage Weil /* 93977f38e0eSSage Weil * reregister request prior to unregistering linger so 94077f38e0eSSage Weil * that r_osd is preserved. 94177f38e0eSSage Weil */ 94277f38e0eSSage Weil BUG_ON(!list_empty(&req->r_req_lru_item)); 943a40c4f10SYehuda Sadeh __register_request(osdc, req); 944e02493c0SAlex Elder list_add_tail(&req->r_req_lru_item, &osdc->req_unsent); 945ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 94677f38e0eSSage Weil __unregister_linger_request(osdc, req); 947a40c4f10SYehuda Sadeh dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, 948a40c4f10SYehuda Sadeh osd->o_osd); 949a40c4f10SYehuda Sadeh } 9506f6c7006SSage Weil } 9516f6c7006SSage Weil 9523d14c5d2SYehuda Sadeh /* 9533d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 9543d14c5d2SYehuda Sadeh */ 9553d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 9563d14c5d2SYehuda Sadeh { 9573d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 9583d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 9593d14c5d2SYehuda Sadeh 9603d14c5d2SYehuda Sadeh if (!osd) 9613d14c5d2SYehuda Sadeh return; 9623d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 9633d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 9643d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 96583aff95eSSage Weil mutex_lock(&osdc->request_mutex); 96683aff95eSSage Weil __kick_osd_requests(osdc, osd); 967f9d25199SAlex Elder __send_queued(osdc); 96883aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 9693d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 9703d14c5d2SYehuda Sadeh } 9713d14c5d2SYehuda Sadeh 9723d14c5d2SYehuda Sadeh /* 9733d14c5d2SYehuda Sadeh * Track open sessions with osds. 9743d14c5d2SYehuda Sadeh */ 975e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 9763d14c5d2SYehuda Sadeh { 9773d14c5d2SYehuda Sadeh struct ceph_osd *osd; 9783d14c5d2SYehuda Sadeh 9793d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 9803d14c5d2SYehuda Sadeh if (!osd) 9813d14c5d2SYehuda Sadeh return NULL; 9823d14c5d2SYehuda Sadeh 9833d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 9843d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 985e10006f8SAlex Elder osd->o_osd = onum; 986f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 9873d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 988a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 9893d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 9903d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 9913d14c5d2SYehuda Sadeh 992b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 9933d14c5d2SYehuda Sadeh 9943d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 9953d14c5d2SYehuda Sadeh return osd; 9963d14c5d2SYehuda Sadeh } 9973d14c5d2SYehuda Sadeh 9983d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 9993d14c5d2SYehuda Sadeh { 10003d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 10013d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 10023d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 10033d14c5d2SYehuda Sadeh return osd; 10043d14c5d2SYehuda Sadeh } else { 10053d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 10063d14c5d2SYehuda Sadeh return NULL; 10073d14c5d2SYehuda Sadeh } 10083d14c5d2SYehuda Sadeh } 10093d14c5d2SYehuda Sadeh 10103d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 10113d14c5d2SYehuda Sadeh { 10123d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 10133d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 1014a255651dSAlex Elder if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { 10153d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 10163d14c5d2SYehuda Sadeh 101727859f97SSage Weil ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); 10183d14c5d2SYehuda Sadeh kfree(osd); 10193d14c5d2SYehuda Sadeh } 10203d14c5d2SYehuda Sadeh } 10213d14c5d2SYehuda Sadeh 10223d14c5d2SYehuda Sadeh /* 10233d14c5d2SYehuda Sadeh * remove an osd from our map 10243d14c5d2SYehuda Sadeh */ 10253d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 10263d14c5d2SYehuda Sadeh { 10273d14c5d2SYehuda Sadeh dout("__remove_osd %p\n", osd); 10283d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_requests)); 10293d14c5d2SYehuda Sadeh rb_erase(&osd->o_node, &osdc->osds); 10303d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 10313d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 10323d14c5d2SYehuda Sadeh put_osd(osd); 10333d14c5d2SYehuda Sadeh } 10343d14c5d2SYehuda Sadeh 1035aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 1036aca420bcSSage Weil { 1037048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 1038aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 1039aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 1040aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 1041aca420bcSSage Weil struct ceph_osd, o_node); 1042aca420bcSSage Weil __remove_osd(osdc, osd); 1043aca420bcSSage Weil } 1044aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 1045aca420bcSSage Weil } 1046aca420bcSSage Weil 10473d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 10483d14c5d2SYehuda Sadeh struct ceph_osd *osd) 10493d14c5d2SYehuda Sadeh { 1050bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 10513d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1052bbf37ec3SIlya Dryomov 10533d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 10543d14c5d2SYehuda Sadeh osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; 10553d14c5d2SYehuda Sadeh } 10563d14c5d2SYehuda Sadeh 1057bbf37ec3SIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd_client *osdc, 1058bbf37ec3SIlya Dryomov struct ceph_osd *osd) 1059bbf37ec3SIlya Dryomov { 1060bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 1061bbf37ec3SIlya Dryomov 1062bbf37ec3SIlya Dryomov if (list_empty(&osd->o_requests) && 1063bbf37ec3SIlya Dryomov list_empty(&osd->o_linger_requests)) 1064bbf37ec3SIlya Dryomov __move_osd_to_lru(osdc, osd); 1065bbf37ec3SIlya Dryomov } 1066bbf37ec3SIlya Dryomov 10673d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 10683d14c5d2SYehuda Sadeh { 10693d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 10703d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 10713d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 10723d14c5d2SYehuda Sadeh } 10733d14c5d2SYehuda Sadeh 1074aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 10753d14c5d2SYehuda Sadeh { 10763d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 10773d14c5d2SYehuda Sadeh 10783d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 10793d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 10803d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 1081aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 10823d14c5d2SYehuda Sadeh break; 10833d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 10843d14c5d2SYehuda Sadeh } 10853d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 10863d14c5d2SYehuda Sadeh } 10873d14c5d2SYehuda Sadeh 10883d14c5d2SYehuda Sadeh /* 10893d14c5d2SYehuda Sadeh * reset osd connect 10903d14c5d2SYehuda Sadeh */ 10913d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 10923d14c5d2SYehuda Sadeh { 1093c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 10943d14c5d2SYehuda Sadeh 10953d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 1096a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 1097a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 10983d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 1099c3acb181SAlex Elder 1100c3acb181SAlex Elder return -ENODEV; 1101c3acb181SAlex Elder } 1102c3acb181SAlex Elder 1103c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 1104c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 11053d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 1106c3acb181SAlex Elder struct ceph_osd_request *req; 1107c3acb181SAlex Elder 11083d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 11090b4af2e8SIlya Dryomov "letting msgr retry\n"); 11103d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 11113d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 11123d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1113c3acb181SAlex Elder 1114c3acb181SAlex Elder return -EAGAIN; 11153d14c5d2SYehuda Sadeh } 1116c3acb181SAlex Elder 1117c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1118c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1119c3acb181SAlex Elder osd->o_incarnation++; 1120c3acb181SAlex Elder 1121c3acb181SAlex Elder return 0; 11223d14c5d2SYehuda Sadeh } 11233d14c5d2SYehuda Sadeh 11243d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 11253d14c5d2SYehuda Sadeh { 11263d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 11273d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 11283d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 11293d14c5d2SYehuda Sadeh 1130aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 11313d14c5d2SYehuda Sadeh while (*p) { 11323d14c5d2SYehuda Sadeh parent = *p; 11333d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 11343d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 11353d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 11363d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 11373d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 11383d14c5d2SYehuda Sadeh else 11393d14c5d2SYehuda Sadeh BUG(); 11403d14c5d2SYehuda Sadeh } 11413d14c5d2SYehuda Sadeh 11423d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 11433d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 11443d14c5d2SYehuda Sadeh } 11453d14c5d2SYehuda Sadeh 11463d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 11473d14c5d2SYehuda Sadeh { 11483d14c5d2SYehuda Sadeh struct ceph_osd *osd; 11493d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 11503d14c5d2SYehuda Sadeh 11513d14c5d2SYehuda Sadeh while (n) { 11523d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 11533d14c5d2SYehuda Sadeh if (o < osd->o_osd) 11543d14c5d2SYehuda Sadeh n = n->rb_left; 11553d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 11563d14c5d2SYehuda Sadeh n = n->rb_right; 11573d14c5d2SYehuda Sadeh else 11583d14c5d2SYehuda Sadeh return osd; 11593d14c5d2SYehuda Sadeh } 11603d14c5d2SYehuda Sadeh return NULL; 11613d14c5d2SYehuda Sadeh } 11623d14c5d2SYehuda Sadeh 11633d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 11643d14c5d2SYehuda Sadeh { 11653d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 11663d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ); 11673d14c5d2SYehuda Sadeh } 11683d14c5d2SYehuda Sadeh 11693d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 11703d14c5d2SYehuda Sadeh { 11713d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 11723d14c5d2SYehuda Sadeh } 11733d14c5d2SYehuda Sadeh 11743d14c5d2SYehuda Sadeh /* 11753d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 11763d14c5d2SYehuda Sadeh * the timeout event. 11773d14c5d2SYehuda Sadeh */ 1178a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 11793d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 11803d14c5d2SYehuda Sadeh { 11813d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 11823d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 118377f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 11843d14c5d2SYehuda Sadeh __insert_request(osdc, req); 11853d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 11863d14c5d2SYehuda Sadeh osdc->num_requests++; 11873d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 11883d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 11893d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 11903d14c5d2SYehuda Sadeh } 1191a40c4f10SYehuda Sadeh } 1192a40c4f10SYehuda Sadeh 11933d14c5d2SYehuda Sadeh /* 11943d14c5d2SYehuda Sadeh * called under osdc->request_mutex 11953d14c5d2SYehuda Sadeh */ 11963d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 11973d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 11983d14c5d2SYehuda Sadeh { 119935f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 120035f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 120135f9f8a0SSage Weil req, req->r_tid); 120235f9f8a0SSage Weil return; 120335f9f8a0SSage Weil } 120435f9f8a0SSage Weil 12053d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 12063d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 12073d14c5d2SYehuda Sadeh osdc->num_requests--; 12083d14c5d2SYehuda Sadeh 12093d14c5d2SYehuda Sadeh if (req->r_osd) { 12103d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 12116740a845SAlex Elder ceph_msg_revoke(req->r_request); 12123d14c5d2SYehuda Sadeh 12133d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1214bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 1215fbdb9190SSage Weil if (list_empty(&req->r_linger_item)) 12163d14c5d2SYehuda Sadeh req->r_osd = NULL; 12173d14c5d2SYehuda Sadeh } 12183d14c5d2SYehuda Sadeh 12197d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 12203d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 12213d14c5d2SYehuda Sadeh 12223d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 12233d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 12243d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 12253d14c5d2SYehuda Sadeh } 12263d14c5d2SYehuda Sadeh } 12273d14c5d2SYehuda Sadeh 12283d14c5d2SYehuda Sadeh /* 12293d14c5d2SYehuda Sadeh * Cancel a previously queued request message 12303d14c5d2SYehuda Sadeh */ 12313d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 12323d14c5d2SYehuda Sadeh { 12333d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 12346740a845SAlex Elder ceph_msg_revoke(req->r_request); 12353d14c5d2SYehuda Sadeh req->r_sent = 0; 12363d14c5d2SYehuda Sadeh } 12373d14c5d2SYehuda Sadeh } 12383d14c5d2SYehuda Sadeh 1239a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1240a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1241a40c4f10SYehuda Sadeh { 1242a40c4f10SYehuda Sadeh dout("__register_linger_request %p\n", req); 124396e4dac6SAlex Elder ceph_osdc_get_request(req); 1244a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 12456194ea89SSage Weil if (req->r_osd) 12461d0326b1SIlya Dryomov list_add_tail(&req->r_linger_osd_item, 12476194ea89SSage Weil &req->r_osd->o_linger_requests); 1248a40c4f10SYehuda Sadeh } 1249a40c4f10SYehuda Sadeh 1250a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1251a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1252a40c4f10SYehuda Sadeh { 1253a40c4f10SYehuda Sadeh dout("__unregister_linger_request %p\n", req); 1254a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 125561c74035SAlex Elder if (req->r_osd) { 12561d0326b1SIlya Dryomov list_del_init(&req->r_linger_osd_item); 1257bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 1258fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1259a40c4f10SYehuda Sadeh req->r_osd = NULL; 1260a40c4f10SYehuda Sadeh } 126196e4dac6SAlex Elder ceph_osdc_put_request(req); 1262a40c4f10SYehuda Sadeh } 1263a40c4f10SYehuda Sadeh 1264a40c4f10SYehuda Sadeh void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, 1265a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1266a40c4f10SYehuda Sadeh { 1267a40c4f10SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1268a40c4f10SYehuda Sadeh if (req->r_linger) { 1269c10ebbf5SAlex Elder req->r_linger = 0; 127096e4dac6SAlex Elder __unregister_linger_request(osdc, req); 1271a40c4f10SYehuda Sadeh } 1272a40c4f10SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1273a40c4f10SYehuda Sadeh } 1274a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); 1275a40c4f10SYehuda Sadeh 1276a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1277a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1278a40c4f10SYehuda Sadeh { 1279a40c4f10SYehuda Sadeh if (!req->r_linger) { 1280a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1281a40c4f10SYehuda Sadeh req->r_linger = 1; 1282a40c4f10SYehuda Sadeh } 1283a40c4f10SYehuda Sadeh } 1284a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1285a40c4f10SYehuda Sadeh 12863d14c5d2SYehuda Sadeh /* 1287d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1288d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1289d29adb34SJosh Durgin * 1290d29adb34SJosh Durgin * Caller should hold map_sem for read. 1291d29adb34SJosh Durgin */ 1292d29adb34SJosh Durgin static bool __req_should_be_paused(struct ceph_osd_client *osdc, 1293d29adb34SJosh Durgin struct ceph_osd_request *req) 1294d29adb34SJosh Durgin { 1295d29adb34SJosh Durgin bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 1296d29adb34SJosh Durgin bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 1297d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 1298d29adb34SJosh Durgin return (req->r_flags & CEPH_OSD_FLAG_READ && pauserd) || 1299d29adb34SJosh Durgin (req->r_flags & CEPH_OSD_FLAG_WRITE && pausewr); 1300d29adb34SJosh Durgin } 1301d29adb34SJosh Durgin 1302d29adb34SJosh Durgin /* 130317a13e40SIlya Dryomov * Calculate mapping of a request to a PG. Takes tiering into account. 130417a13e40SIlya Dryomov */ 130517a13e40SIlya Dryomov static int __calc_request_pg(struct ceph_osdmap *osdmap, 130617a13e40SIlya Dryomov struct ceph_osd_request *req, 130717a13e40SIlya Dryomov struct ceph_pg *pg_out) 130817a13e40SIlya Dryomov { 1309205ee118SIlya Dryomov bool need_check_tiering; 1310205ee118SIlya Dryomov 1311205ee118SIlya Dryomov need_check_tiering = false; 1312205ee118SIlya Dryomov if (req->r_target_oloc.pool == -1) { 1313205ee118SIlya Dryomov req->r_target_oloc = req->r_base_oloc; /* struct */ 1314205ee118SIlya Dryomov need_check_tiering = true; 1315205ee118SIlya Dryomov } 1316205ee118SIlya Dryomov if (req->r_target_oid.name_len == 0) { 1317205ee118SIlya Dryomov ceph_oid_copy(&req->r_target_oid, &req->r_base_oid); 1318205ee118SIlya Dryomov need_check_tiering = true; 1319205ee118SIlya Dryomov } 1320205ee118SIlya Dryomov 1321205ee118SIlya Dryomov if (need_check_tiering && 1322205ee118SIlya Dryomov (req->r_flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 132317a13e40SIlya Dryomov struct ceph_pg_pool_info *pi; 132417a13e40SIlya Dryomov 1325205ee118SIlya Dryomov pi = ceph_pg_pool_by_id(osdmap, req->r_target_oloc.pool); 132617a13e40SIlya Dryomov if (pi) { 132717a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_READ) && 132817a13e40SIlya Dryomov pi->read_tier >= 0) 1329205ee118SIlya Dryomov req->r_target_oloc.pool = pi->read_tier; 133017a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 133117a13e40SIlya Dryomov pi->write_tier >= 0) 1332205ee118SIlya Dryomov req->r_target_oloc.pool = pi->write_tier; 133317a13e40SIlya Dryomov } 133417a13e40SIlya Dryomov /* !pi is caught in ceph_oloc_oid_to_pg() */ 133517a13e40SIlya Dryomov } 133617a13e40SIlya Dryomov 1337205ee118SIlya Dryomov return ceph_oloc_oid_to_pg(osdmap, &req->r_target_oloc, 1338205ee118SIlya Dryomov &req->r_target_oid, pg_out); 133917a13e40SIlya Dryomov } 134017a13e40SIlya Dryomov 134117a13e40SIlya Dryomov /* 13423d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 13433d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 134425985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 13456f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 13463d14c5d2SYehuda Sadeh * 13473d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 13483d14c5d2SYehuda Sadeh * 13493d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 13503d14c5d2SYehuda Sadeh */ 13516f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 135238d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 13533d14c5d2SYehuda Sadeh { 13545b191d99SSage Weil struct ceph_pg pgid; 13553d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 13568008ab10SIlya Dryomov int num, o; 13573d14c5d2SYehuda Sadeh int err; 1358d29adb34SJosh Durgin bool was_paused; 13593d14c5d2SYehuda Sadeh 13606f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 136117a13e40SIlya Dryomov 136217a13e40SIlya Dryomov err = __calc_request_pg(osdc->osdmap, req, &pgid); 13636f6c7006SSage Weil if (err) { 13646f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 13653d14c5d2SYehuda Sadeh return err; 13666f6c7006SSage Weil } 13673d14c5d2SYehuda Sadeh req->r_pgid = pgid; 13683d14c5d2SYehuda Sadeh 13698008ab10SIlya Dryomov num = ceph_calc_pg_acting(osdc->osdmap, pgid, acting, &o); 13708008ab10SIlya Dryomov if (num < 0) 13718008ab10SIlya Dryomov num = 0; 13723d14c5d2SYehuda Sadeh 1373d29adb34SJosh Durgin was_paused = req->r_paused; 1374d29adb34SJosh Durgin req->r_paused = __req_should_be_paused(osdc, req); 1375d29adb34SJosh Durgin if (was_paused && !req->r_paused) 1376d29adb34SJosh Durgin force_resend = 1; 1377d29adb34SJosh Durgin 137838d6453cSSage Weil if ((!force_resend && 137938d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 13803d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 13813d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 13823d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 1383d29adb34SJosh Durgin (req->r_osd == NULL && o == -1) || 1384d29adb34SJosh Durgin req->r_paused) 13853d14c5d2SYehuda Sadeh return 0; /* no change */ 13863d14c5d2SYehuda Sadeh 13875b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 13885b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 13893d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 13903d14c5d2SYehuda Sadeh 13913d14c5d2SYehuda Sadeh /* record full pg acting set */ 13923d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 13933d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 13943d14c5d2SYehuda Sadeh 13953d14c5d2SYehuda Sadeh if (req->r_osd) { 13963d14c5d2SYehuda Sadeh __cancel_request(req); 13973d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 13983d14c5d2SYehuda Sadeh req->r_osd = NULL; 13993d14c5d2SYehuda Sadeh } 14003d14c5d2SYehuda Sadeh 14013d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 14023d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 14033d14c5d2SYehuda Sadeh err = -ENOMEM; 1404e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 14056f6c7006SSage Weil if (!req->r_osd) { 14066f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 14073d14c5d2SYehuda Sadeh goto out; 14086f6c7006SSage Weil } 14093d14c5d2SYehuda Sadeh 14106f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 14113d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 14123d14c5d2SYehuda Sadeh 1413b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1414b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1415b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 14163d14c5d2SYehuda Sadeh } 14173d14c5d2SYehuda Sadeh 14183d14c5d2SYehuda Sadeh if (req->r_osd) { 14193d14c5d2SYehuda Sadeh __remove_osd_from_lru(req->r_osd); 1420ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1421ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 14226f6c7006SSage Weil } else { 1423ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 14243d14c5d2SYehuda Sadeh } 14253d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 14263d14c5d2SYehuda Sadeh 14273d14c5d2SYehuda Sadeh out: 14283d14c5d2SYehuda Sadeh return err; 14293d14c5d2SYehuda Sadeh } 14303d14c5d2SYehuda Sadeh 14313d14c5d2SYehuda Sadeh /* 14323d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 14333d14c5d2SYehuda Sadeh */ 143456e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 14353d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 14363d14c5d2SYehuda Sadeh { 14371b83bef2SSage Weil void *p; 14383d14c5d2SYehuda Sadeh 14391b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 14401b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 14411b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 14423d14c5d2SYehuda Sadeh 14431b83bef2SSage Weil /* fill in message content that changes each time we send it */ 14441b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 14451b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 1446205ee118SIlya Dryomov put_unaligned_le64(req->r_target_oloc.pool, req->r_request_pool); 14471b83bef2SSage Weil p = req->r_request_pgid; 14481b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 14491b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 14501b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 14511b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 14521b83bef2SSage Weil sizeof(req->r_reassert_version)); 14532169aea6SSage Weil 14543d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 14553d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 14563d14c5d2SYehuda Sadeh 14573d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 145826be8808SAlex Elder 14593d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 146026be8808SAlex Elder 146126be8808SAlex Elder ceph_con_send(&req->r_osd->o_con, req->r_request); 14623d14c5d2SYehuda Sadeh } 14633d14c5d2SYehuda Sadeh 14643d14c5d2SYehuda Sadeh /* 14656f6c7006SSage Weil * Send any requests in the queue (req_unsent). 14666f6c7006SSage Weil */ 1467f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 14686f6c7006SSage Weil { 14696f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 14706f6c7006SSage Weil 1471f9d25199SAlex Elder dout("__send_queued\n"); 1472f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 14736f6c7006SSage Weil __send_request(osdc, req); 14746f6c7006SSage Weil } 14756f6c7006SSage Weil 14766f6c7006SSage Weil /* 14770bbfdfe8SIlya Dryomov * Caller should hold map_sem for read and request_mutex. 14780bbfdfe8SIlya Dryomov */ 14790bbfdfe8SIlya Dryomov static int __ceph_osdc_start_request(struct ceph_osd_client *osdc, 14800bbfdfe8SIlya Dryomov struct ceph_osd_request *req, 14810bbfdfe8SIlya Dryomov bool nofail) 14820bbfdfe8SIlya Dryomov { 14830bbfdfe8SIlya Dryomov int rc; 14840bbfdfe8SIlya Dryomov 14850bbfdfe8SIlya Dryomov __register_request(osdc, req); 14860bbfdfe8SIlya Dryomov req->r_sent = 0; 14870bbfdfe8SIlya Dryomov req->r_got_reply = 0; 14880bbfdfe8SIlya Dryomov rc = __map_request(osdc, req, 0); 14890bbfdfe8SIlya Dryomov if (rc < 0) { 14900bbfdfe8SIlya Dryomov if (nofail) { 14910bbfdfe8SIlya Dryomov dout("osdc_start_request failed map, " 14920bbfdfe8SIlya Dryomov " will retry %lld\n", req->r_tid); 14930bbfdfe8SIlya Dryomov rc = 0; 14940bbfdfe8SIlya Dryomov } else { 14950bbfdfe8SIlya Dryomov __unregister_request(osdc, req); 14960bbfdfe8SIlya Dryomov } 14970bbfdfe8SIlya Dryomov return rc; 14980bbfdfe8SIlya Dryomov } 14990bbfdfe8SIlya Dryomov 15000bbfdfe8SIlya Dryomov if (req->r_osd == NULL) { 15010bbfdfe8SIlya Dryomov dout("send_request %p no up osds in pg\n", req); 15020bbfdfe8SIlya Dryomov ceph_monc_request_next_osdmap(&osdc->client->monc); 15030bbfdfe8SIlya Dryomov } else { 15040bbfdfe8SIlya Dryomov __send_queued(osdc); 15050bbfdfe8SIlya Dryomov } 15060bbfdfe8SIlya Dryomov 15070bbfdfe8SIlya Dryomov return 0; 15080bbfdfe8SIlya Dryomov } 15090bbfdfe8SIlya Dryomov 15100bbfdfe8SIlya Dryomov /* 15113d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 15123d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 15133d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 15143d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 15153d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 15163d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 15173d14c5d2SYehuda Sadeh * there are no open requests). 15183d14c5d2SYehuda Sadeh */ 15193d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 15203d14c5d2SYehuda Sadeh { 15213d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 15223d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 152383aff95eSSage Weil struct ceph_osd_request *req; 15243d14c5d2SYehuda Sadeh struct ceph_osd *osd; 15253d14c5d2SYehuda Sadeh unsigned long keepalive = 15263d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ; 15273d14c5d2SYehuda Sadeh struct list_head slow_osds; 15283d14c5d2SYehuda Sadeh dout("timeout\n"); 15293d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 15303d14c5d2SYehuda Sadeh 15313d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 15323d14c5d2SYehuda Sadeh 15333d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 15343d14c5d2SYehuda Sadeh 15353d14c5d2SYehuda Sadeh /* 15363d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 15373d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 15383d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 15393d14c5d2SYehuda Sadeh */ 15403d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 15413d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 15423d14c5d2SYehuda Sadeh if (time_before(jiffies, req->r_stamp + keepalive)) 15433d14c5d2SYehuda Sadeh break; 15443d14c5d2SYehuda Sadeh 15453d14c5d2SYehuda Sadeh osd = req->r_osd; 15463d14c5d2SYehuda Sadeh BUG_ON(!osd); 15473d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 15483d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 15493d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 15503d14c5d2SYehuda Sadeh } 15513d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 15523d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 15533d14c5d2SYehuda Sadeh o_keepalive_item); 15543d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 15553d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 15563d14c5d2SYehuda Sadeh } 15573d14c5d2SYehuda Sadeh 15583d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1559f9d25199SAlex Elder __send_queued(osdc); 15603d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 15613d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 15623d14c5d2SYehuda Sadeh } 15633d14c5d2SYehuda Sadeh 15643d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 15653d14c5d2SYehuda Sadeh { 15663d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 15673d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 15683d14c5d2SYehuda Sadeh osds_timeout_work.work); 15693d14c5d2SYehuda Sadeh unsigned long delay = 15703d14c5d2SYehuda Sadeh osdc->client->options->osd_idle_ttl * HZ >> 2; 15713d14c5d2SYehuda Sadeh 15723d14c5d2SYehuda Sadeh dout("osds timeout\n"); 15733d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1574aca420bcSSage Weil remove_old_osds(osdc); 15753d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 15763d14c5d2SYehuda Sadeh 15773d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 15783d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 15793d14c5d2SYehuda Sadeh } 15803d14c5d2SYehuda Sadeh 1581205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 1582205ee118SIlya Dryomov struct ceph_object_locator *oloc) 1583205ee118SIlya Dryomov { 1584205ee118SIlya Dryomov u8 struct_v, struct_cv; 1585205ee118SIlya Dryomov u32 len; 1586205ee118SIlya Dryomov void *struct_end; 1587205ee118SIlya Dryomov int ret = 0; 1588205ee118SIlya Dryomov 1589205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1590205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1591205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1592205ee118SIlya Dryomov if (struct_v < 3) { 1593205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 1594205ee118SIlya Dryomov struct_v, struct_cv); 1595205ee118SIlya Dryomov goto e_inval; 1596205ee118SIlya Dryomov } 1597205ee118SIlya Dryomov if (struct_cv > 6) { 1598205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 1599205ee118SIlya Dryomov struct_v, struct_cv); 1600205ee118SIlya Dryomov goto e_inval; 1601205ee118SIlya Dryomov } 1602205ee118SIlya Dryomov len = ceph_decode_32(p); 1603205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1604205ee118SIlya Dryomov struct_end = *p + len; 1605205ee118SIlya Dryomov 1606205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 1607205ee118SIlya Dryomov *p += 4; /* skip preferred */ 1608205ee118SIlya Dryomov 1609205ee118SIlya Dryomov len = ceph_decode_32(p); 1610205ee118SIlya Dryomov if (len > 0) { 1611205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 1612205ee118SIlya Dryomov goto e_inval; 1613205ee118SIlya Dryomov } 1614205ee118SIlya Dryomov 1615205ee118SIlya Dryomov if (struct_v >= 5) { 1616205ee118SIlya Dryomov len = ceph_decode_32(p); 1617205ee118SIlya Dryomov if (len > 0) { 1618205ee118SIlya Dryomov pr_warn("ceph_object_locator::nspace is set\n"); 1619205ee118SIlya Dryomov goto e_inval; 1620205ee118SIlya Dryomov } 1621205ee118SIlya Dryomov } 1622205ee118SIlya Dryomov 1623205ee118SIlya Dryomov if (struct_v >= 6) { 1624205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 1625205ee118SIlya Dryomov if (hash != -1) { 1626205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 1627205ee118SIlya Dryomov goto e_inval; 1628205ee118SIlya Dryomov } 1629205ee118SIlya Dryomov } 1630205ee118SIlya Dryomov 1631205ee118SIlya Dryomov /* skip the rest */ 1632205ee118SIlya Dryomov *p = struct_end; 1633205ee118SIlya Dryomov out: 1634205ee118SIlya Dryomov return ret; 1635205ee118SIlya Dryomov 1636205ee118SIlya Dryomov e_inval: 1637205ee118SIlya Dryomov ret = -EINVAL; 1638205ee118SIlya Dryomov goto out; 1639205ee118SIlya Dryomov } 1640205ee118SIlya Dryomov 1641205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 1642205ee118SIlya Dryomov struct ceph_request_redirect *redir) 1643205ee118SIlya Dryomov { 1644205ee118SIlya Dryomov u8 struct_v, struct_cv; 1645205ee118SIlya Dryomov u32 len; 1646205ee118SIlya Dryomov void *struct_end; 1647205ee118SIlya Dryomov int ret; 1648205ee118SIlya Dryomov 1649205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1650205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1651205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1652205ee118SIlya Dryomov if (struct_cv > 1) { 1653205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 1654205ee118SIlya Dryomov struct_v, struct_cv); 1655205ee118SIlya Dryomov goto e_inval; 1656205ee118SIlya Dryomov } 1657205ee118SIlya Dryomov len = ceph_decode_32(p); 1658205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1659205ee118SIlya Dryomov struct_end = *p + len; 1660205ee118SIlya Dryomov 1661205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 1662205ee118SIlya Dryomov if (ret) 1663205ee118SIlya Dryomov goto out; 1664205ee118SIlya Dryomov 1665205ee118SIlya Dryomov len = ceph_decode_32(p); 1666205ee118SIlya Dryomov if (len > 0) { 1667205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 1668205ee118SIlya Dryomov goto e_inval; 1669205ee118SIlya Dryomov } 1670205ee118SIlya Dryomov 1671205ee118SIlya Dryomov len = ceph_decode_32(p); 1672205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 1673205ee118SIlya Dryomov 1674205ee118SIlya Dryomov /* skip the rest */ 1675205ee118SIlya Dryomov *p = struct_end; 1676205ee118SIlya Dryomov out: 1677205ee118SIlya Dryomov return ret; 1678205ee118SIlya Dryomov 1679205ee118SIlya Dryomov e_inval: 1680205ee118SIlya Dryomov ret = -EINVAL; 1681205ee118SIlya Dryomov goto out; 1682205ee118SIlya Dryomov } 1683205ee118SIlya Dryomov 168425845472SSage Weil static void complete_request(struct ceph_osd_request *req) 168525845472SSage Weil { 168625845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 168725845472SSage Weil } 168825845472SSage Weil 16893d14c5d2SYehuda Sadeh /* 16903d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 16913d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 16923d14c5d2SYehuda Sadeh */ 16933d14c5d2SYehuda Sadeh static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 16943d14c5d2SYehuda Sadeh struct ceph_connection *con) 16953d14c5d2SYehuda Sadeh { 16961b83bef2SSage Weil void *p, *end; 16973d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1698205ee118SIlya Dryomov struct ceph_request_redirect redir; 16993d14c5d2SYehuda Sadeh u64 tid; 17001b83bef2SSage Weil int object_len; 170179528734SAlex Elder unsigned int numops; 170279528734SAlex Elder int payload_len, flags; 17033d14c5d2SYehuda Sadeh s32 result; 17041b83bef2SSage Weil s32 retry_attempt; 17051b83bef2SSage Weil struct ceph_pg pg; 17061b83bef2SSage Weil int err; 17071b83bef2SSage Weil u32 reassert_epoch; 17081b83bef2SSage Weil u64 reassert_version; 17091b83bef2SSage Weil u32 osdmap_epoch; 17100d5af164SAlex Elder int already_completed; 17119fc6e064SAlex Elder u32 bytes; 171279528734SAlex Elder unsigned int i; 17133d14c5d2SYehuda Sadeh 17143d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 17151b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 17161b83bef2SSage Weil 17171b83bef2SSage Weil p = msg->front.iov_base; 17181b83bef2SSage Weil end = p + msg->front.iov_len; 17191b83bef2SSage Weil 17201b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 17211b83bef2SSage Weil object_len = ceph_decode_32(&p); 17221b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 17231b83bef2SSage Weil p += object_len; 17241b83bef2SSage Weil 1725ef4859d6SAlex Elder err = ceph_decode_pgid(&p, end, &pg); 17261b83bef2SSage Weil if (err) 17273d14c5d2SYehuda Sadeh goto bad; 17281b83bef2SSage Weil 17291b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 17301b83bef2SSage Weil flags = ceph_decode_64(&p); 17311b83bef2SSage Weil result = ceph_decode_32(&p); 17321b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 17331b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 17341b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 17351b83bef2SSage Weil 17363d14c5d2SYehuda Sadeh /* lookup */ 1737ff513aceSIlya Dryomov down_read(&osdc->map_sem); 17383d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 17393d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 17403d14c5d2SYehuda Sadeh if (req == NULL) { 17413d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 17428058fd45SAlex Elder goto bad_mutex; 17433d14c5d2SYehuda Sadeh } 17443d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 17451b83bef2SSage Weil 17461b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 17471b83bef2SSage Weil req, result); 17481b83bef2SSage Weil 174918741196SDan Carpenter ceph_decode_need(&p, end, 4, bad_put); 17501b83bef2SSage Weil numops = ceph_decode_32(&p); 17511b83bef2SSage Weil if (numops > CEPH_OSD_MAX_OP) 17521b83bef2SSage Weil goto bad_put; 17531b83bef2SSage Weil if (numops != req->r_num_ops) 17541b83bef2SSage Weil goto bad_put; 17551b83bef2SSage Weil payload_len = 0; 175618741196SDan Carpenter ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put); 17571b83bef2SSage Weil for (i = 0; i < numops; i++) { 17581b83bef2SSage Weil struct ceph_osd_op *op = p; 17591b83bef2SSage Weil int len; 17601b83bef2SSage Weil 17611b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 17621b83bef2SSage Weil req->r_reply_op_len[i] = len; 17631b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 17641b83bef2SSage Weil payload_len += len; 17651b83bef2SSage Weil p += sizeof(*op); 17661b83bef2SSage Weil } 17679fc6e064SAlex Elder bytes = le32_to_cpu(msg->hdr.data_len); 17689fc6e064SAlex Elder if (payload_len != bytes) { 17691b83bef2SSage Weil pr_warning("sum of op payload lens %d != data_len %d", 17709fc6e064SAlex Elder payload_len, bytes); 17711b83bef2SSage Weil goto bad_put; 17721b83bef2SSage Weil } 17731b83bef2SSage Weil 177418741196SDan Carpenter ceph_decode_need(&p, end, 4 + numops * 4, bad_put); 17751b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 17761b83bef2SSage Weil for (i = 0; i < numops; i++) 17771b83bef2SSage Weil req->r_reply_op_result[i] = ceph_decode_32(&p); 17783d14c5d2SYehuda Sadeh 1779205ee118SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 6) { 1780205ee118SIlya Dryomov p += 8 + 4; /* skip replay_version */ 1781205ee118SIlya Dryomov p += 8; /* skip user_version */ 1782205ee118SIlya Dryomov 1783205ee118SIlya Dryomov err = ceph_redirect_decode(&p, end, &redir); 1784205ee118SIlya Dryomov if (err) 1785205ee118SIlya Dryomov goto bad_put; 1786205ee118SIlya Dryomov } else { 1787205ee118SIlya Dryomov redir.oloc.pool = -1; 1788205ee118SIlya Dryomov } 1789205ee118SIlya Dryomov 1790205ee118SIlya Dryomov if (redir.oloc.pool != -1) { 1791205ee118SIlya Dryomov dout("redirect pool %lld\n", redir.oloc.pool); 1792205ee118SIlya Dryomov 1793205ee118SIlya Dryomov __unregister_request(osdc, req); 1794205ee118SIlya Dryomov 1795205ee118SIlya Dryomov req->r_target_oloc = redir.oloc; /* struct */ 1796205ee118SIlya Dryomov 1797205ee118SIlya Dryomov /* 1798205ee118SIlya Dryomov * Start redirect requests with nofail=true. If 1799205ee118SIlya Dryomov * mapping fails, request will end up on the notarget 1800205ee118SIlya Dryomov * list, waiting for the new osdmap (which can take 1801205ee118SIlya Dryomov * a while), even though the original request mapped 1802205ee118SIlya Dryomov * successfully. In the future we might want to follow 1803205ee118SIlya Dryomov * original request's nofail setting here. 1804205ee118SIlya Dryomov */ 1805ff513aceSIlya Dryomov err = __ceph_osdc_start_request(osdc, req, true); 1806205ee118SIlya Dryomov BUG_ON(err); 1807205ee118SIlya Dryomov 1808ff513aceSIlya Dryomov goto out_unlock; 1809205ee118SIlya Dryomov } 1810205ee118SIlya Dryomov 1811eb845ff1SYan, Zheng already_completed = req->r_got_reply; 18123d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 18131b83bef2SSage Weil req->r_result = result; 18143d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 18153d14c5d2SYehuda Sadeh bytes); 18163d14c5d2SYehuda Sadeh if (req->r_result == 0) 18173d14c5d2SYehuda Sadeh req->r_result = bytes; 18183d14c5d2SYehuda Sadeh 18193d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 18201b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 18211b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 18223d14c5d2SYehuda Sadeh 18233d14c5d2SYehuda Sadeh req->r_got_reply = 1; 18243d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 18253d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 1826ff513aceSIlya Dryomov goto out_unlock; 18273d14c5d2SYehuda Sadeh } 18283d14c5d2SYehuda Sadeh 18293d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 18303d14c5d2SYehuda Sadeh 1831a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1832a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1833a40c4f10SYehuda Sadeh 18343d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 18353d14c5d2SYehuda Sadeh if (result < 0 || 18363d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 18373d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 18383d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 18393d14c5d2SYehuda Sadeh 18403d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1841ff513aceSIlya Dryomov up_read(&osdc->map_sem); 18423d14c5d2SYehuda Sadeh 1843eb845ff1SYan, Zheng if (!already_completed) { 184461c5d6bfSYan, Zheng if (req->r_unsafe_callback && 184561c5d6bfSYan, Zheng result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK)) 184661c5d6bfSYan, Zheng req->r_unsafe_callback(req, true); 18473d14c5d2SYehuda Sadeh if (req->r_callback) 18483d14c5d2SYehuda Sadeh req->r_callback(req, msg); 18493d14c5d2SYehuda Sadeh else 18503d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 1851eb845ff1SYan, Zheng } 18523d14c5d2SYehuda Sadeh 185361c5d6bfSYan, Zheng if (flags & CEPH_OSD_FLAG_ONDISK) { 185461c5d6bfSYan, Zheng if (req->r_unsafe_callback && already_completed) 185561c5d6bfSYan, Zheng req->r_unsafe_callback(req, false); 185625845472SSage Weil complete_request(req); 185761c5d6bfSYan, Zheng } 18583d14c5d2SYehuda Sadeh 1859ff513aceSIlya Dryomov out: 1860a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 18613d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 18623d14c5d2SYehuda Sadeh return; 1863ff513aceSIlya Dryomov out_unlock: 1864ff513aceSIlya Dryomov mutex_unlock(&osdc->request_mutex); 1865ff513aceSIlya Dryomov up_read(&osdc->map_sem); 1866ff513aceSIlya Dryomov goto out; 18673d14c5d2SYehuda Sadeh 18681b83bef2SSage Weil bad_put: 186937c89bdeSLi Wang req->r_result = -EIO; 187037c89bdeSLi Wang __unregister_request(osdc, req); 187137c89bdeSLi Wang if (req->r_callback) 187237c89bdeSLi Wang req->r_callback(req, msg); 187337c89bdeSLi Wang else 187437c89bdeSLi Wang complete_all(&req->r_completion); 187537c89bdeSLi Wang complete_request(req); 18761b83bef2SSage Weil ceph_osdc_put_request(req); 18778058fd45SAlex Elder bad_mutex: 18788058fd45SAlex Elder mutex_unlock(&osdc->request_mutex); 1879ff513aceSIlya Dryomov up_read(&osdc->map_sem); 18803d14c5d2SYehuda Sadeh bad: 18811b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 18821b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 18833d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 18843d14c5d2SYehuda Sadeh } 18853d14c5d2SYehuda Sadeh 18866f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 18873d14c5d2SYehuda Sadeh { 18883d14c5d2SYehuda Sadeh struct rb_node *p, *n; 18893d14c5d2SYehuda Sadeh 18903d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 18916f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 18923d14c5d2SYehuda Sadeh 18933d14c5d2SYehuda Sadeh n = rb_next(p); 18943d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 18953d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 18963d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 18973d14c5d2SYehuda Sadeh osd->o_osd), 18983d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 18993d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 19003d14c5d2SYehuda Sadeh } 19013d14c5d2SYehuda Sadeh } 19023d14c5d2SYehuda Sadeh 19033d14c5d2SYehuda Sadeh /* 19046f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 19056f6c7006SSage Weil * no osd, request a new map. 19063d14c5d2SYehuda Sadeh * 1907e6d50f67SAlex Elder * Caller should hold map_sem for read. 19083d14c5d2SYehuda Sadeh */ 19099a1ea2dbSJosh Durgin static void kick_requests(struct ceph_osd_client *osdc, bool force_resend, 19109a1ea2dbSJosh Durgin bool force_resend_writes) 19113d14c5d2SYehuda Sadeh { 1912a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 19136f6c7006SSage Weil struct rb_node *p; 19146f6c7006SSage Weil int needmap = 0; 19156f6c7006SSage Weil int err; 19169a1ea2dbSJosh Durgin bool force_resend_req; 19173d14c5d2SYehuda Sadeh 19189a1ea2dbSJosh Durgin dout("kick_requests %s %s\n", force_resend ? " (force resend)" : "", 19199a1ea2dbSJosh Durgin force_resend_writes ? " (force resend writes)" : ""); 19203d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19216194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 19226f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 19236194ea89SSage Weil p = rb_next(p); 1924ab60b16dSAlex Elder 1925ab60b16dSAlex Elder /* 1926ab60b16dSAlex Elder * For linger requests that have not yet been 1927ab60b16dSAlex Elder * registered, move them to the linger list; they'll 1928ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 1929ab60b16dSAlex Elder * the request before re-registering it as a linger 1930ab60b16dSAlex Elder * request to ensure the __map_request() below 1931ab60b16dSAlex Elder * will decide it needs to be sent. 1932ab60b16dSAlex Elder */ 1933ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 1934ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 1935ab60b16dSAlex Elder req, req->r_tid, 1936ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 193796e4dac6SAlex Elder ceph_osdc_get_request(req); 1938ab60b16dSAlex Elder __unregister_request(osdc, req); 1939ab60b16dSAlex Elder __register_linger_request(osdc, req); 194096e4dac6SAlex Elder ceph_osdc_put_request(req); 1941ab60b16dSAlex Elder continue; 1942ab60b16dSAlex Elder } 1943ab60b16dSAlex Elder 19449a1ea2dbSJosh Durgin force_resend_req = force_resend || 19459a1ea2dbSJosh Durgin (force_resend_writes && 19469a1ea2dbSJosh Durgin req->r_flags & CEPH_OSD_FLAG_WRITE); 19479a1ea2dbSJosh Durgin err = __map_request(osdc, req, force_resend_req); 19486f6c7006SSage Weil if (err < 0) 19496f6c7006SSage Weil continue; /* error */ 19506f6c7006SSage Weil if (req->r_osd == NULL) { 19516f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 19526f6c7006SSage Weil needmap++; /* request a newer map */ 19536f6c7006SSage Weil } else if (err > 0) { 19546194ea89SSage Weil if (!req->r_linger) { 19556194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 19566194ea89SSage Weil req->r_tid, 19576f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 19586f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 19596f6c7006SSage Weil } 19606f6c7006SSage Weil } 19616194ea89SSage Weil } 1962a40c4f10SYehuda Sadeh 1963a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 1964a40c4f10SYehuda Sadeh r_linger_item) { 1965a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 1966a40c4f10SYehuda Sadeh 19679a1ea2dbSJosh Durgin err = __map_request(osdc, req, 19689a1ea2dbSJosh Durgin force_resend || force_resend_writes); 1969ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 1970a40c4f10SYehuda Sadeh if (err == 0) 1971a40c4f10SYehuda Sadeh continue; /* no change and no osd was specified */ 1972a40c4f10SYehuda Sadeh if (err < 0) 1973a40c4f10SYehuda Sadeh continue; /* hrm! */ 1974a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 1975a40c4f10SYehuda Sadeh dout("tid %llu maps to no valid osd\n", req->r_tid); 1976a40c4f10SYehuda Sadeh needmap++; /* request a newer map */ 1977a40c4f10SYehuda Sadeh continue; 1978a40c4f10SYehuda Sadeh } 1979a40c4f10SYehuda Sadeh 1980a40c4f10SYehuda Sadeh dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, 1981a40c4f10SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 1982a40c4f10SYehuda Sadeh __register_request(osdc, req); 1983c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 1984a40c4f10SYehuda Sadeh } 198514d2f38dSAlex Elder reset_changed_osds(osdc); 19863d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 19873d14c5d2SYehuda Sadeh 19883d14c5d2SYehuda Sadeh if (needmap) { 19893d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 19903d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 19913d14c5d2SYehuda Sadeh } 19923d14c5d2SYehuda Sadeh } 19936f6c7006SSage Weil 19946f6c7006SSage Weil 19953d14c5d2SYehuda Sadeh /* 19963d14c5d2SYehuda Sadeh * Process updated osd map. 19973d14c5d2SYehuda Sadeh * 19983d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 19993d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 20003d14c5d2SYehuda Sadeh * off to different OSDs as needed. 20013d14c5d2SYehuda Sadeh */ 20023d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 20033d14c5d2SYehuda Sadeh { 20043d14c5d2SYehuda Sadeh void *p, *end, *next; 20053d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 20063d14c5d2SYehuda Sadeh u32 epoch; 20073d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 20083d14c5d2SYehuda Sadeh int err; 20093d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 20109a1ea2dbSJosh Durgin bool was_full; 20113d14c5d2SYehuda Sadeh 20123d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 20133d14c5d2SYehuda Sadeh p = msg->front.iov_base; 20143d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 20153d14c5d2SYehuda Sadeh 20163d14c5d2SYehuda Sadeh /* verify fsid */ 20173d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 20183d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 20193d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 20203d14c5d2SYehuda Sadeh return; 20213d14c5d2SYehuda Sadeh 20223d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 20233d14c5d2SYehuda Sadeh 20249a1ea2dbSJosh Durgin was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 20259a1ea2dbSJosh Durgin 20263d14c5d2SYehuda Sadeh /* incremental maps */ 20273d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 20283d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 20293d14c5d2SYehuda Sadeh while (nr_maps > 0) { 20303d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 20313d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 20323d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 20333d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 20343d14c5d2SYehuda Sadeh next = p + maplen; 20353d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 20363d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 20373d14c5d2SYehuda Sadeh epoch, maplen); 20383d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 20393d14c5d2SYehuda Sadeh osdc->osdmap, 204015d9882cSAlex Elder &osdc->client->msgr); 20413d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 20423d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 20433d14c5d2SYehuda Sadeh goto bad; 20443d14c5d2SYehuda Sadeh } 20453d14c5d2SYehuda Sadeh BUG_ON(!newmap); 20463d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 20473d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 20483d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 20493d14c5d2SYehuda Sadeh } 20509a1ea2dbSJosh Durgin was_full = was_full || 20519a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 20529a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 20539a1ea2dbSJosh Durgin kick_requests(osdc, 0, was_full); 20543d14c5d2SYehuda Sadeh } else { 20553d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 20563d14c5d2SYehuda Sadeh epoch, maplen); 20573d14c5d2SYehuda Sadeh } 20583d14c5d2SYehuda Sadeh p = next; 20593d14c5d2SYehuda Sadeh nr_maps--; 20603d14c5d2SYehuda Sadeh } 20613d14c5d2SYehuda Sadeh if (newmap) 20623d14c5d2SYehuda Sadeh goto done; 20633d14c5d2SYehuda Sadeh 20643d14c5d2SYehuda Sadeh /* full maps */ 20653d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 20663d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 20673d14c5d2SYehuda Sadeh while (nr_maps) { 20683d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 20693d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 20703d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 20713d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 20723d14c5d2SYehuda Sadeh if (nr_maps > 1) { 20733d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 20743d14c5d2SYehuda Sadeh epoch, maplen); 20753d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 20763d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 20773d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 20783d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 20793d14c5d2SYehuda Sadeh } else { 208038d6453cSSage Weil int skipped_map = 0; 208138d6453cSSage Weil 20823d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 2083a2505d63SIlya Dryomov newmap = ceph_osdmap_decode(&p, p+maplen); 20843d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 20853d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 20863d14c5d2SYehuda Sadeh goto bad; 20873d14c5d2SYehuda Sadeh } 20883d14c5d2SYehuda Sadeh BUG_ON(!newmap); 20893d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 20903d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 209138d6453cSSage Weil if (oldmap) { 209238d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 209338d6453cSSage Weil skipped_map = 1; 20943d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 209538d6453cSSage Weil } 20969a1ea2dbSJosh Durgin was_full = was_full || 20979a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 20989a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 20999a1ea2dbSJosh Durgin kick_requests(osdc, skipped_map, was_full); 21003d14c5d2SYehuda Sadeh } 21013d14c5d2SYehuda Sadeh p += maplen; 21023d14c5d2SYehuda Sadeh nr_maps--; 21033d14c5d2SYehuda Sadeh } 21043d14c5d2SYehuda Sadeh 2105b72e19b9SDan Carpenter if (!osdc->osdmap) 2106b72e19b9SDan Carpenter goto bad; 21073d14c5d2SYehuda Sadeh done: 21083d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 21093d14c5d2SYehuda Sadeh ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); 2110cd634fb6SSage Weil 2111cd634fb6SSage Weil /* 2112cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 2113cd634fb6SSage Weil * we find out when we are no longer full and stop returning 2114cd634fb6SSage Weil * ENOSPC. 2115cd634fb6SSage Weil */ 2116d29adb34SJosh Durgin if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 2117d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || 2118d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) 2119cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 2120cd634fb6SSage Weil 2121f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 2122f9d25199SAlex Elder __send_queued(osdc); 2123f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 21243d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 21253d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 21263d14c5d2SYehuda Sadeh return; 21273d14c5d2SYehuda Sadeh 21283d14c5d2SYehuda Sadeh bad: 21293d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 21303d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 21313d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 21323d14c5d2SYehuda Sadeh } 21333d14c5d2SYehuda Sadeh 21343d14c5d2SYehuda Sadeh /* 2135a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 2136a40c4f10SYehuda Sadeh * 2137a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 2138a40c4f10SYehuda Sadeh */ 2139a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 2140a40c4f10SYehuda Sadeh { 2141a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 2142a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 2143a40c4f10SYehuda Sadeh 2144a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 2145a40c4f10SYehuda Sadeh kfree(event); 2146a40c4f10SYehuda Sadeh } 2147a40c4f10SYehuda Sadeh 2148a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 2149a40c4f10SYehuda Sadeh { 2150a40c4f10SYehuda Sadeh kref_get(&event->kref); 2151a40c4f10SYehuda Sadeh } 2152a40c4f10SYehuda Sadeh 2153a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 2154a40c4f10SYehuda Sadeh { 2155a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 2156a40c4f10SYehuda Sadeh } 2157a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 2158a40c4f10SYehuda Sadeh 2159a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 2160a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 2161a40c4f10SYehuda Sadeh { 2162a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2163a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2164a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2165a40c4f10SYehuda Sadeh 2166a40c4f10SYehuda Sadeh while (*p) { 2167a40c4f10SYehuda Sadeh parent = *p; 2168a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2169a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 2170a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2171a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 2172a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2173a40c4f10SYehuda Sadeh else 2174a40c4f10SYehuda Sadeh BUG(); 2175a40c4f10SYehuda Sadeh } 2176a40c4f10SYehuda Sadeh 2177a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 2178a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 2179a40c4f10SYehuda Sadeh } 2180a40c4f10SYehuda Sadeh 2181a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 2182a40c4f10SYehuda Sadeh u64 cookie) 2183a40c4f10SYehuda Sadeh { 2184a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2185a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2186a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2187a40c4f10SYehuda Sadeh 2188a40c4f10SYehuda Sadeh while (*p) { 2189a40c4f10SYehuda Sadeh parent = *p; 2190a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2191a40c4f10SYehuda Sadeh if (cookie < event->cookie) 2192a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2193a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 2194a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2195a40c4f10SYehuda Sadeh else 2196a40c4f10SYehuda Sadeh return event; 2197a40c4f10SYehuda Sadeh } 2198a40c4f10SYehuda Sadeh return NULL; 2199a40c4f10SYehuda Sadeh } 2200a40c4f10SYehuda Sadeh 2201a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 2202a40c4f10SYehuda Sadeh { 2203a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2204a40c4f10SYehuda Sadeh 2205a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 2206a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 2207a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 2208a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2209a40c4f10SYehuda Sadeh } else { 2210a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 2211a40c4f10SYehuda Sadeh } 2212a40c4f10SYehuda Sadeh } 2213a40c4f10SYehuda Sadeh 2214a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 2215a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 22163c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 2217a40c4f10SYehuda Sadeh { 2218a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2219a40c4f10SYehuda Sadeh 2220a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 2221a40c4f10SYehuda Sadeh if (!event) 2222a40c4f10SYehuda Sadeh return -ENOMEM; 2223a40c4f10SYehuda Sadeh 2224a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 2225a40c4f10SYehuda Sadeh event->cb = event_cb; 22263c663bbdSAlex Elder event->one_shot = 0; 2227a40c4f10SYehuda Sadeh event->data = data; 2228a40c4f10SYehuda Sadeh event->osdc = osdc; 2229a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 22303ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 2231a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 2232a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 2233a40c4f10SYehuda Sadeh 2234a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2235a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 2236a40c4f10SYehuda Sadeh __insert_event(osdc, event); 2237a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2238a40c4f10SYehuda Sadeh 2239a40c4f10SYehuda Sadeh *pevent = event; 2240a40c4f10SYehuda Sadeh return 0; 2241a40c4f10SYehuda Sadeh } 2242a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 2243a40c4f10SYehuda Sadeh 2244a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 2245a40c4f10SYehuda Sadeh { 2246a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2247a40c4f10SYehuda Sadeh 2248a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 2249a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2250a40c4f10SYehuda Sadeh __remove_event(event); 2251a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2252a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 2253a40c4f10SYehuda Sadeh } 2254a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 2255a40c4f10SYehuda Sadeh 2256a40c4f10SYehuda Sadeh 2257a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 2258a40c4f10SYehuda Sadeh { 2259a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 2260a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 2261a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 2262a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 2263a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 2264a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 2265a40c4f10SYehuda Sadeh 2266a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 2267a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 2268a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 2269a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2270a40c4f10SYehuda Sadeh kfree(event_work); 2271a40c4f10SYehuda Sadeh } 2272a40c4f10SYehuda Sadeh 2273a40c4f10SYehuda Sadeh 2274a40c4f10SYehuda Sadeh /* 2275a40c4f10SYehuda Sadeh * Process osd watch notifications 2276a40c4f10SYehuda Sadeh */ 22773c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 22783c663bbdSAlex Elder struct ceph_msg *msg) 2279a40c4f10SYehuda Sadeh { 2280a40c4f10SYehuda Sadeh void *p, *end; 2281a40c4f10SYehuda Sadeh u8 proto_ver; 2282a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 2283a40c4f10SYehuda Sadeh u8 opcode; 2284a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2285a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 2286a40c4f10SYehuda Sadeh 2287a40c4f10SYehuda Sadeh p = msg->front.iov_base; 2288a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 2289a40c4f10SYehuda Sadeh 2290a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 2291a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 2292a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 2293a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 2294a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 2295a40c4f10SYehuda Sadeh 2296a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2297a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 2298a40c4f10SYehuda Sadeh if (event) { 22993c663bbdSAlex Elder BUG_ON(event->one_shot); 2300a40c4f10SYehuda Sadeh get_event(event); 2301a40c4f10SYehuda Sadeh } 2302a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2303a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 2304a40c4f10SYehuda Sadeh cookie, ver, event); 2305a40c4f10SYehuda Sadeh if (event) { 2306a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 2307a40c4f10SYehuda Sadeh if (!event_work) { 2308a40c4f10SYehuda Sadeh dout("ERROR: could not allocate event_work\n"); 2309a40c4f10SYehuda Sadeh goto done_err; 2310a40c4f10SYehuda Sadeh } 23116b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 2312a40c4f10SYehuda Sadeh event_work->event = event; 2313a40c4f10SYehuda Sadeh event_work->ver = ver; 2314a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 2315a40c4f10SYehuda Sadeh event_work->opcode = opcode; 2316a40c4f10SYehuda Sadeh if (!queue_work(osdc->notify_wq, &event_work->work)) { 2317a40c4f10SYehuda Sadeh dout("WARNING: failed to queue notify event work\n"); 2318a40c4f10SYehuda Sadeh goto done_err; 2319a40c4f10SYehuda Sadeh } 2320a40c4f10SYehuda Sadeh } 2321a40c4f10SYehuda Sadeh 2322a40c4f10SYehuda Sadeh return; 2323a40c4f10SYehuda Sadeh 2324a40c4f10SYehuda Sadeh done_err: 2325a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2326a40c4f10SYehuda Sadeh return; 2327a40c4f10SYehuda Sadeh 2328a40c4f10SYehuda Sadeh bad: 2329a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 2330a40c4f10SYehuda Sadeh } 2331a40c4f10SYehuda Sadeh 2332a40c4f10SYehuda Sadeh /* 2333e65550fdSAlex Elder * build new request AND message 2334e65550fdSAlex Elder * 2335e65550fdSAlex Elder */ 2336e65550fdSAlex Elder void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, 2337e65550fdSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 2338e65550fdSAlex Elder struct timespec *mtime) 2339e65550fdSAlex Elder { 2340e65550fdSAlex Elder struct ceph_msg *msg = req->r_request; 2341e65550fdSAlex Elder void *p; 2342e65550fdSAlex Elder size_t msg_size; 2343e65550fdSAlex Elder int flags = req->r_flags; 2344e65550fdSAlex Elder u64 data_len; 2345e65550fdSAlex Elder unsigned int i; 2346e65550fdSAlex Elder 2347e65550fdSAlex Elder req->r_snapid = snap_id; 2348e65550fdSAlex Elder req->r_snapc = ceph_get_snap_context(snapc); 2349e65550fdSAlex Elder 2350e65550fdSAlex Elder /* encode request */ 2351e65550fdSAlex Elder msg->hdr.version = cpu_to_le16(4); 2352e65550fdSAlex Elder 2353e65550fdSAlex Elder p = msg->front.iov_base; 2354e65550fdSAlex Elder ceph_encode_32(&p, 1); /* client_inc is always 1 */ 2355e65550fdSAlex Elder req->r_request_osdmap_epoch = p; 2356e65550fdSAlex Elder p += 4; 2357e65550fdSAlex Elder req->r_request_flags = p; 2358e65550fdSAlex Elder p += 4; 2359e65550fdSAlex Elder if (req->r_flags & CEPH_OSD_FLAG_WRITE) 2360e65550fdSAlex Elder ceph_encode_timespec(p, mtime); 2361e65550fdSAlex Elder p += sizeof(struct ceph_timespec); 2362e65550fdSAlex Elder req->r_request_reassert_version = p; 2363e65550fdSAlex Elder p += sizeof(struct ceph_eversion); /* will get filled in */ 2364e65550fdSAlex Elder 2365e65550fdSAlex Elder /* oloc */ 2366e65550fdSAlex Elder ceph_encode_8(&p, 4); 2367e65550fdSAlex Elder ceph_encode_8(&p, 4); 2368e65550fdSAlex Elder ceph_encode_32(&p, 8 + 4 + 4); 2369e65550fdSAlex Elder req->r_request_pool = p; 2370e65550fdSAlex Elder p += 8; 2371e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2372e65550fdSAlex Elder ceph_encode_32(&p, 0); /* key len */ 2373e65550fdSAlex Elder 2374e65550fdSAlex Elder ceph_encode_8(&p, 1); 2375e65550fdSAlex Elder req->r_request_pgid = p; 2376e65550fdSAlex Elder p += 8 + 4; 2377e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2378e65550fdSAlex Elder 2379e65550fdSAlex Elder /* oid */ 23803c972c95SIlya Dryomov ceph_encode_32(&p, req->r_base_oid.name_len); 23813c972c95SIlya Dryomov memcpy(p, req->r_base_oid.name, req->r_base_oid.name_len); 23823c972c95SIlya Dryomov dout("oid '%.*s' len %d\n", req->r_base_oid.name_len, 23833c972c95SIlya Dryomov req->r_base_oid.name, req->r_base_oid.name_len); 23843c972c95SIlya Dryomov p += req->r_base_oid.name_len; 2385e65550fdSAlex Elder 2386e65550fdSAlex Elder /* ops--can imply data */ 2387e65550fdSAlex Elder ceph_encode_16(&p, (u16)req->r_num_ops); 2388e65550fdSAlex Elder data_len = 0; 2389e65550fdSAlex Elder for (i = 0; i < req->r_num_ops; i++) { 2390e65550fdSAlex Elder data_len += osd_req_encode_op(req, p, i); 2391e65550fdSAlex Elder p += sizeof(struct ceph_osd_op); 2392e65550fdSAlex Elder } 2393e65550fdSAlex Elder 2394e65550fdSAlex Elder /* snaps */ 2395e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapid); 2396e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 2397e65550fdSAlex Elder ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 2398e65550fdSAlex Elder if (req->r_snapc) { 2399e65550fdSAlex Elder for (i = 0; i < snapc->num_snaps; i++) { 2400e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc->snaps[i]); 2401e65550fdSAlex Elder } 2402e65550fdSAlex Elder } 2403e65550fdSAlex Elder 2404e65550fdSAlex Elder req->r_request_attempts = p; 2405e65550fdSAlex Elder p += 4; 2406e65550fdSAlex Elder 2407e65550fdSAlex Elder /* data */ 2408e65550fdSAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 2409e65550fdSAlex Elder u16 data_off; 2410e65550fdSAlex Elder 2411e65550fdSAlex Elder /* 2412e65550fdSAlex Elder * The header "data_off" is a hint to the receiver 2413e65550fdSAlex Elder * allowing it to align received data into its 2414e65550fdSAlex Elder * buffers such that there's no need to re-copy 2415e65550fdSAlex Elder * it before writing it to disk (direct I/O). 2416e65550fdSAlex Elder */ 2417e65550fdSAlex Elder data_off = (u16) (off & 0xffff); 2418e65550fdSAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 2419e65550fdSAlex Elder } 2420e65550fdSAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 2421e65550fdSAlex Elder 2422e65550fdSAlex Elder BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 2423e65550fdSAlex Elder msg_size = p - msg->front.iov_base; 2424e65550fdSAlex Elder msg->front.iov_len = msg_size; 2425e65550fdSAlex Elder msg->hdr.front_len = cpu_to_le32(msg_size); 2426e65550fdSAlex Elder 2427e65550fdSAlex Elder dout("build_request msg_size was %d\n", (int)msg_size); 2428e65550fdSAlex Elder } 2429e65550fdSAlex Elder EXPORT_SYMBOL(ceph_osdc_build_request); 2430e65550fdSAlex Elder 2431e65550fdSAlex Elder /* 24323d14c5d2SYehuda Sadeh * Register request, send initial attempt. 24333d14c5d2SYehuda Sadeh */ 24343d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 24353d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 24363d14c5d2SYehuda Sadeh bool nofail) 24373d14c5d2SYehuda Sadeh { 24380bbfdfe8SIlya Dryomov int rc; 24393d14c5d2SYehuda Sadeh 24403d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 24413d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 24420bbfdfe8SIlya Dryomov 24430bbfdfe8SIlya Dryomov rc = __ceph_osdc_start_request(osdc, req, nofail); 24440bbfdfe8SIlya Dryomov 24453d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 24463d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 24470bbfdfe8SIlya Dryomov 24483d14c5d2SYehuda Sadeh return rc; 24493d14c5d2SYehuda Sadeh } 24503d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 24513d14c5d2SYehuda Sadeh 24523d14c5d2SYehuda Sadeh /* 24533d14c5d2SYehuda Sadeh * wait for a request to complete 24543d14c5d2SYehuda Sadeh */ 24553d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 24563d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 24573d14c5d2SYehuda Sadeh { 24583d14c5d2SYehuda Sadeh int rc; 24593d14c5d2SYehuda Sadeh 24603d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 24613d14c5d2SYehuda Sadeh if (rc < 0) { 24623d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 24633d14c5d2SYehuda Sadeh __cancel_request(req); 24643d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 24653d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 246625845472SSage Weil complete_request(req); 24673d14c5d2SYehuda Sadeh dout("wait_request tid %llu canceled/timed out\n", req->r_tid); 24683d14c5d2SYehuda Sadeh return rc; 24693d14c5d2SYehuda Sadeh } 24703d14c5d2SYehuda Sadeh 24713d14c5d2SYehuda Sadeh dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); 24723d14c5d2SYehuda Sadeh return req->r_result; 24733d14c5d2SYehuda Sadeh } 24743d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 24753d14c5d2SYehuda Sadeh 24763d14c5d2SYehuda Sadeh /* 24773d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 24783d14c5d2SYehuda Sadeh */ 24793d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 24803d14c5d2SYehuda Sadeh { 24813d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 24823d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 24833d14c5d2SYehuda Sadeh 24843d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 24853d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 24863d14c5d2SYehuda Sadeh while (1) { 24873d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 24883d14c5d2SYehuda Sadeh if (!req) 24893d14c5d2SYehuda Sadeh break; 24903d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 24913d14c5d2SYehuda Sadeh break; 24923d14c5d2SYehuda Sadeh 24933d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 24943d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 24953d14c5d2SYehuda Sadeh continue; 24963d14c5d2SYehuda Sadeh 24973d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 24983d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 24993d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 25003d14c5d2SYehuda Sadeh req->r_tid, last_tid); 25013d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 25023d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 25033d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 25043d14c5d2SYehuda Sadeh } 25053d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 25063d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 25073d14c5d2SYehuda Sadeh } 25083d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 25093d14c5d2SYehuda Sadeh 25103d14c5d2SYehuda Sadeh /* 2511dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 2512dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 2513dd935f44SJosh Durgin */ 2514f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 2515dd935f44SJosh Durgin { 2516dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 2517dd935f44SJosh Durgin } 2518dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 2519dd935f44SJosh Durgin 2520dd935f44SJosh Durgin 2521dd935f44SJosh Durgin /* 25223d14c5d2SYehuda Sadeh * init, shutdown 25233d14c5d2SYehuda Sadeh */ 25243d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 25253d14c5d2SYehuda Sadeh { 25263d14c5d2SYehuda Sadeh int err; 25273d14c5d2SYehuda Sadeh 25283d14c5d2SYehuda Sadeh dout("init\n"); 25293d14c5d2SYehuda Sadeh osdc->client = client; 25303d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 25313d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 25323d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 25333d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 25343d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 25353d14c5d2SYehuda Sadeh osdc->last_tid = 0; 25363d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 25373d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 25383d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 25393d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 25406f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 25416f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 2542a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 25433d14c5d2SYehuda Sadeh osdc->num_requests = 0; 25443d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 25453d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2546a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 2547a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 2548a40c4f10SYehuda Sadeh osdc->event_count = 0; 25493d14c5d2SYehuda Sadeh 25503d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 25513d14c5d2SYehuda Sadeh round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); 25523d14c5d2SYehuda Sadeh 25533d14c5d2SYehuda Sadeh err = -ENOMEM; 25543d14c5d2SYehuda Sadeh osdc->req_mempool = mempool_create_kmalloc_pool(10, 25553d14c5d2SYehuda Sadeh sizeof(struct ceph_osd_request)); 25563d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 25573d14c5d2SYehuda Sadeh goto out; 25583d14c5d2SYehuda Sadeh 2559d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2560d50b409fSSage Weil OSD_OP_FRONT_LEN, 10, true, 25613d14c5d2SYehuda Sadeh "osd_op"); 25623d14c5d2SYehuda Sadeh if (err < 0) 25633d14c5d2SYehuda Sadeh goto out_mempool; 2564d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 25653d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, 10, true, 25663d14c5d2SYehuda Sadeh "osd_op_reply"); 25673d14c5d2SYehuda Sadeh if (err < 0) 25683d14c5d2SYehuda Sadeh goto out_msgpool; 2569a40c4f10SYehuda Sadeh 2570dbcae088SDan Carpenter err = -ENOMEM; 2571a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2572dbcae088SDan Carpenter if (!osdc->notify_wq) 2573c172ec5cSIlya Dryomov goto out_msgpool_reply; 2574c172ec5cSIlya Dryomov 25753d14c5d2SYehuda Sadeh return 0; 25763d14c5d2SYehuda Sadeh 2577c172ec5cSIlya Dryomov out_msgpool_reply: 2578c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 25793d14c5d2SYehuda Sadeh out_msgpool: 25803d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 25813d14c5d2SYehuda Sadeh out_mempool: 25823d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 25833d14c5d2SYehuda Sadeh out: 25843d14c5d2SYehuda Sadeh return err; 25853d14c5d2SYehuda Sadeh } 25863d14c5d2SYehuda Sadeh 25873d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 25883d14c5d2SYehuda Sadeh { 2589a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2590a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 25913d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 25923d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 25933d14c5d2SYehuda Sadeh if (osdc->osdmap) { 25943d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 25953d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 25963d14c5d2SYehuda Sadeh } 2597aca420bcSSage Weil remove_all_osds(osdc); 25983d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 25993d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 26003d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 26013d14c5d2SYehuda Sadeh } 26023d14c5d2SYehuda Sadeh 26033d14c5d2SYehuda Sadeh /* 26043d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 26053d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 26063d14c5d2SYehuda Sadeh */ 26073d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 26083d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 26093d14c5d2SYehuda Sadeh u64 off, u64 *plen, 26103d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2611b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 26123d14c5d2SYehuda Sadeh { 26133d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 26143d14c5d2SYehuda Sadeh int rc = 0; 26153d14c5d2SYehuda Sadeh 26163d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 26173d14c5d2SYehuda Sadeh vino.snap, off, *plen); 261879528734SAlex Elder req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 1, 26193d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 2620acead002SAlex Elder NULL, truncate_seq, truncate_size, 2621153e5167SAlex Elder false); 26226816282dSSage Weil if (IS_ERR(req)) 26236816282dSSage Weil return PTR_ERR(req); 26243d14c5d2SYehuda Sadeh 26253d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 26260fff87ecSAlex Elder 2627406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 2628a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 26293d14c5d2SYehuda Sadeh 2630e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 263143bfe5deSAlex Elder off, *plen, *plen, page_align); 26323d14c5d2SYehuda Sadeh 263379528734SAlex Elder ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); 263402ee07d3SAlex Elder 26353d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 26363d14c5d2SYehuda Sadeh if (!rc) 26373d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 26383d14c5d2SYehuda Sadeh 26393d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 26403d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 26413d14c5d2SYehuda Sadeh return rc; 26423d14c5d2SYehuda Sadeh } 26433d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 26443d14c5d2SYehuda Sadeh 26453d14c5d2SYehuda Sadeh /* 26463d14c5d2SYehuda Sadeh * do a synchronous write on N pages 26473d14c5d2SYehuda Sadeh */ 26483d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 26493d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 26503d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 26513d14c5d2SYehuda Sadeh u64 off, u64 len, 26523d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 26533d14c5d2SYehuda Sadeh struct timespec *mtime, 265424808826SAlex Elder struct page **pages, int num_pages) 26553d14c5d2SYehuda Sadeh { 26563d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 26573d14c5d2SYehuda Sadeh int rc = 0; 2658b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 26593d14c5d2SYehuda Sadeh 2660acead002SAlex Elder BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ 266179528734SAlex Elder req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 1, 26623d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 266324808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2664acead002SAlex Elder snapc, truncate_seq, truncate_size, 2665153e5167SAlex Elder true); 26666816282dSSage Weil if (IS_ERR(req)) 26676816282dSSage Weil return PTR_ERR(req); 26683d14c5d2SYehuda Sadeh 26693d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 2670406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 267143bfe5deSAlex Elder false, false); 267243bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 26733d14c5d2SYehuda Sadeh 267479528734SAlex Elder ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); 267502ee07d3SAlex Elder 267687f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 26773d14c5d2SYehuda Sadeh if (!rc) 26783d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 26793d14c5d2SYehuda Sadeh 26803d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 26813d14c5d2SYehuda Sadeh if (rc == 0) 26823d14c5d2SYehuda Sadeh rc = len; 26833d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 26843d14c5d2SYehuda Sadeh return rc; 26853d14c5d2SYehuda Sadeh } 26863d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 26873d14c5d2SYehuda Sadeh 26885522ae0bSAlex Elder int ceph_osdc_setup(void) 26895522ae0bSAlex Elder { 26905522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 26915522ae0bSAlex Elder ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", 26925522ae0bSAlex Elder sizeof (struct ceph_osd_request), 26935522ae0bSAlex Elder __alignof__(struct ceph_osd_request), 26945522ae0bSAlex Elder 0, NULL); 26955522ae0bSAlex Elder 26965522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 26975522ae0bSAlex Elder } 26985522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 26995522ae0bSAlex Elder 27005522ae0bSAlex Elder void ceph_osdc_cleanup(void) 27015522ae0bSAlex Elder { 27025522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 27035522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 27045522ae0bSAlex Elder ceph_osd_request_cache = NULL; 27055522ae0bSAlex Elder } 27065522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 27075522ae0bSAlex Elder 27083d14c5d2SYehuda Sadeh /* 27093d14c5d2SYehuda Sadeh * handle incoming message 27103d14c5d2SYehuda Sadeh */ 27113d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 27123d14c5d2SYehuda Sadeh { 27133d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 27143d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 27153d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 27163d14c5d2SYehuda Sadeh 27173d14c5d2SYehuda Sadeh if (!osd) 27183d14c5d2SYehuda Sadeh goto out; 27193d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 27203d14c5d2SYehuda Sadeh 27213d14c5d2SYehuda Sadeh switch (type) { 27223d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 27233d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 27243d14c5d2SYehuda Sadeh break; 27253d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 27263d14c5d2SYehuda Sadeh handle_reply(osdc, msg, con); 27273d14c5d2SYehuda Sadeh break; 2728a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2729a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2730a40c4f10SYehuda Sadeh break; 27313d14c5d2SYehuda Sadeh 27323d14c5d2SYehuda Sadeh default: 27333d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 27343d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 27353d14c5d2SYehuda Sadeh } 27363d14c5d2SYehuda Sadeh out: 27373d14c5d2SYehuda Sadeh ceph_msg_put(msg); 27383d14c5d2SYehuda Sadeh } 27393d14c5d2SYehuda Sadeh 27403d14c5d2SYehuda Sadeh /* 27413d14c5d2SYehuda Sadeh * lookup and return message for incoming reply. set up reply message 27423d14c5d2SYehuda Sadeh * pages. 27433d14c5d2SYehuda Sadeh */ 27443d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 27453d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 27463d14c5d2SYehuda Sadeh int *skip) 27473d14c5d2SYehuda Sadeh { 27483d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 27493d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 27503d14c5d2SYehuda Sadeh struct ceph_msg *m; 27513d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 27523f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 27533d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 27543d14c5d2SYehuda Sadeh u64 tid; 27553d14c5d2SYehuda Sadeh 27563d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 27573d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 27583d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 27593d14c5d2SYehuda Sadeh if (!req) { 27603d14c5d2SYehuda Sadeh *skip = 1; 27613d14c5d2SYehuda Sadeh m = NULL; 2762756a16a5SSage Weil dout("get_reply unknown tid %llu from osd%d\n", tid, 27633d14c5d2SYehuda Sadeh osd->o_osd); 27643d14c5d2SYehuda Sadeh goto out; 27653d14c5d2SYehuda Sadeh } 27663d14c5d2SYehuda Sadeh 2767ace6d3a9SAlex Elder if (req->r_reply->con) 27688921d114SAlex Elder dout("%s revoking msg %p from old con %p\n", __func__, 2769ace6d3a9SAlex Elder req->r_reply, req->r_reply->con); 27708921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 27713d14c5d2SYehuda Sadeh 2772f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 27734974341eSAlex Elder pr_warning("get_reply front %d > preallocated %d (%u#%llu)\n", 2774f2be82b0SIlya Dryomov front_len, req->r_reply->front_alloc_len, 27754974341eSAlex Elder (unsigned int)con->peer_name.type, 27764974341eSAlex Elder le64_to_cpu(con->peer_name.num)); 27773f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 27783f0a4ac5SIlya Dryomov false); 27793d14c5d2SYehuda Sadeh if (!m) 27803d14c5d2SYehuda Sadeh goto out; 27813d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 27823d14c5d2SYehuda Sadeh req->r_reply = m; 27833d14c5d2SYehuda Sadeh } 27843d14c5d2SYehuda Sadeh m = ceph_msg_get(req->r_reply); 27853d14c5d2SYehuda Sadeh 27863d14c5d2SYehuda Sadeh if (data_len > 0) { 2787a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 27880fff87ecSAlex Elder 2789a4ce40a9SAlex Elder /* 2790a4ce40a9SAlex Elder * XXX This is assuming there is only one op containing 2791a4ce40a9SAlex Elder * XXX page data. Probably OK for reads, but this 2792a4ce40a9SAlex Elder * XXX ought to be done more generally. 2793a4ce40a9SAlex Elder */ 2794406e2c9fSAlex Elder osd_data = osd_req_op_extent_osd_data(req, 0); 27950fff87ecSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 27960fff87ecSAlex Elder if (osd_data->pages && 2797e0c59487SAlex Elder unlikely(osd_data->length < data_len)) { 27982ac2b7a6SAlex Elder 2799e0c59487SAlex Elder pr_warning("tid %lld reply has %d bytes " 2800e0c59487SAlex Elder "we had only %llu bytes ready\n", 2801e0c59487SAlex Elder tid, data_len, osd_data->length); 28023d14c5d2SYehuda Sadeh *skip = 1; 28033d14c5d2SYehuda Sadeh ceph_msg_put(m); 28043d14c5d2SYehuda Sadeh m = NULL; 28053d14c5d2SYehuda Sadeh goto out; 28063d14c5d2SYehuda Sadeh } 28073d14c5d2SYehuda Sadeh } 28082ac2b7a6SAlex Elder } 28093d14c5d2SYehuda Sadeh *skip = 0; 28103d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 28113d14c5d2SYehuda Sadeh 28123d14c5d2SYehuda Sadeh out: 28133d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 28143d14c5d2SYehuda Sadeh return m; 28153d14c5d2SYehuda Sadeh 28163d14c5d2SYehuda Sadeh } 28173d14c5d2SYehuda Sadeh 28183d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 28193d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 28203d14c5d2SYehuda Sadeh int *skip) 28213d14c5d2SYehuda Sadeh { 28223d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28233d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 28243d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 28253d14c5d2SYehuda Sadeh 28261c20f2d2SAlex Elder *skip = 0; 28273d14c5d2SYehuda Sadeh switch (type) { 28283d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2829a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2830b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 28313d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 28323d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 28333d14c5d2SYehuda Sadeh default: 28343d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 28353d14c5d2SYehuda Sadeh osd->o_osd); 28363d14c5d2SYehuda Sadeh *skip = 1; 28373d14c5d2SYehuda Sadeh return NULL; 28383d14c5d2SYehuda Sadeh } 28393d14c5d2SYehuda Sadeh } 28403d14c5d2SYehuda Sadeh 28413d14c5d2SYehuda Sadeh /* 28423d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 28433d14c5d2SYehuda Sadeh */ 28443d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 28453d14c5d2SYehuda Sadeh { 28463d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28473d14c5d2SYehuda Sadeh if (get_osd(osd)) 28483d14c5d2SYehuda Sadeh return con; 28493d14c5d2SYehuda Sadeh return NULL; 28503d14c5d2SYehuda Sadeh } 28513d14c5d2SYehuda Sadeh 28523d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 28533d14c5d2SYehuda Sadeh { 28543d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28553d14c5d2SYehuda Sadeh put_osd(osd); 28563d14c5d2SYehuda Sadeh } 28573d14c5d2SYehuda Sadeh 28583d14c5d2SYehuda Sadeh /* 28593d14c5d2SYehuda Sadeh * authentication 28603d14c5d2SYehuda Sadeh */ 2861a3530df3SAlex Elder /* 2862a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2863a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2864a3530df3SAlex Elder */ 2865a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 28668f43fb53SAlex Elder int *proto, int force_new) 28673d14c5d2SYehuda Sadeh { 28683d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 28693d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 28703d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 287174f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 28723d14c5d2SYehuda Sadeh 287374f1869fSAlex Elder if (force_new && auth->authorizer) { 287427859f97SSage Weil ceph_auth_destroy_authorizer(ac, auth->authorizer); 287574f1869fSAlex Elder auth->authorizer = NULL; 28763d14c5d2SYehuda Sadeh } 287727859f97SSage Weil if (!auth->authorizer) { 287827859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2879a3530df3SAlex Elder auth); 28803d14c5d2SYehuda Sadeh if (ret) 2881a3530df3SAlex Elder return ERR_PTR(ret); 288227859f97SSage Weil } else { 288327859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 28840bed9b5cSSage Weil auth); 28850bed9b5cSSage Weil if (ret) 28860bed9b5cSSage Weil return ERR_PTR(ret); 28873d14c5d2SYehuda Sadeh } 28883d14c5d2SYehuda Sadeh *proto = ac->protocol; 288974f1869fSAlex Elder 2890a3530df3SAlex Elder return auth; 28913d14c5d2SYehuda Sadeh } 28923d14c5d2SYehuda Sadeh 28933d14c5d2SYehuda Sadeh 28943d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 28953d14c5d2SYehuda Sadeh { 28963d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 28973d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 28983d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 28993d14c5d2SYehuda Sadeh 290027859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 29013d14c5d2SYehuda Sadeh } 29023d14c5d2SYehuda Sadeh 29033d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 29043d14c5d2SYehuda Sadeh { 29053d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 29063d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 29073d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 29083d14c5d2SYehuda Sadeh 290927859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 29103d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 29113d14c5d2SYehuda Sadeh } 29123d14c5d2SYehuda Sadeh 29133d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 29143d14c5d2SYehuda Sadeh .get = get_osd_con, 29153d14c5d2SYehuda Sadeh .put = put_osd_con, 29163d14c5d2SYehuda Sadeh .dispatch = dispatch, 29173d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 29183d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 29193d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 29203d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 29213d14c5d2SYehuda Sadeh .fault = osd_reset, 29223d14c5d2SYehuda Sadeh }; 2923