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 */ 3003d14c5d2SYehuda Sadeh void ceph_osdc_release_request(struct kref *kref) 3013d14c5d2SYehuda Sadeh { 302c54d47bfSAlex Elder struct ceph_osd_request *req; 3035476492fSAlex Elder unsigned int which; 3043d14c5d2SYehuda Sadeh 305c54d47bfSAlex Elder req = container_of(kref, struct ceph_osd_request, r_kref); 3063d14c5d2SYehuda Sadeh if (req->r_request) 3073d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 308ace6d3a9SAlex Elder if (req->r_reply) { 3098921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 310ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 311ace6d3a9SAlex Elder } 3120fff87ecSAlex Elder 3135476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 3145476492fSAlex Elder osd_req_op_data_release(req, which); 3150fff87ecSAlex Elder 3163d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 3173d14c5d2SYehuda Sadeh if (req->r_mempool) 3183d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 3193d14c5d2SYehuda Sadeh else 3205522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 3215522ae0bSAlex Elder 3223d14c5d2SYehuda Sadeh } 3233d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_release_request); 3243d14c5d2SYehuda Sadeh 3253d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 3263d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 3271b83bef2SSage Weil unsigned int num_ops, 3283d14c5d2SYehuda Sadeh bool use_mempool, 32954a54007SAlex Elder gfp_t gfp_flags) 3303d14c5d2SYehuda Sadeh { 3313d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 3323d14c5d2SYehuda Sadeh struct ceph_msg *msg; 3331b83bef2SSage Weil size_t msg_size; 3343d14c5d2SYehuda Sadeh 33579528734SAlex Elder BUILD_BUG_ON(CEPH_OSD_MAX_OP > U16_MAX); 33679528734SAlex Elder BUG_ON(num_ops > CEPH_OSD_MAX_OP); 33779528734SAlex Elder 3381b83bef2SSage Weil msg_size = 4 + 4 + 8 + 8 + 4+8; 3391b83bef2SSage Weil msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 3401b83bef2SSage Weil msg_size += 1 + 8 + 4 + 4; /* pg_t */ 3412d0ebc5dSIlya Dryomov msg_size += 4 + CEPH_MAX_OID_NAME_LEN; /* oid */ 3421b83bef2SSage Weil msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); 3431b83bef2SSage Weil msg_size += 8; /* snapid */ 3441b83bef2SSage Weil msg_size += 8; /* snap_seq */ 3451b83bef2SSage Weil msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ 3461b83bef2SSage Weil msg_size += 4; 3473d14c5d2SYehuda Sadeh 3483d14c5d2SYehuda Sadeh if (use_mempool) { 3493d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 3503d14c5d2SYehuda Sadeh memset(req, 0, sizeof(*req)); 3513d14c5d2SYehuda Sadeh } else { 3525522ae0bSAlex Elder req = kmem_cache_zalloc(ceph_osd_request_cache, gfp_flags); 3533d14c5d2SYehuda Sadeh } 3543d14c5d2SYehuda Sadeh if (req == NULL) 3553d14c5d2SYehuda Sadeh return NULL; 3563d14c5d2SYehuda Sadeh 3573d14c5d2SYehuda Sadeh req->r_osdc = osdc; 3583d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 35979528734SAlex Elder req->r_num_ops = num_ops; 3603d14c5d2SYehuda Sadeh 3613d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 3623d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 3633d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 364a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 3653d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 366a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 367a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_osd); 368935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 369cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 370cd43045cSSage Weil 37122116525SIlya Dryomov req->r_oloc.pool = -1; 37222116525SIlya Dryomov 3733d14c5d2SYehuda Sadeh /* create reply message */ 3743d14c5d2SYehuda Sadeh if (use_mempool) 3753d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 3763d14c5d2SYehuda Sadeh else 3773d14c5d2SYehuda Sadeh msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, 378b61c2763SSage Weil OSD_OPREPLY_FRONT_LEN, gfp_flags, true); 3793d14c5d2SYehuda Sadeh if (!msg) { 3803d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 3813d14c5d2SYehuda Sadeh return NULL; 3823d14c5d2SYehuda Sadeh } 3833d14c5d2SYehuda Sadeh req->r_reply = msg; 3843d14c5d2SYehuda Sadeh 3853d14c5d2SYehuda Sadeh /* create request message; allow space for oid */ 3863d14c5d2SYehuda Sadeh if (use_mempool) 3873d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 3883d14c5d2SYehuda Sadeh else 389b61c2763SSage Weil msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); 3903d14c5d2SYehuda Sadeh if (!msg) { 3913d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 3923d14c5d2SYehuda Sadeh return NULL; 3933d14c5d2SYehuda Sadeh } 3943d14c5d2SYehuda Sadeh 3953d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 3963d14c5d2SYehuda Sadeh 3973d14c5d2SYehuda Sadeh req->r_request = msg; 3983d14c5d2SYehuda Sadeh 3993d14c5d2SYehuda Sadeh return req; 4003d14c5d2SYehuda Sadeh } 4013d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_alloc_request); 4023d14c5d2SYehuda Sadeh 403a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 404a8dd0a37SAlex Elder { 405a8dd0a37SAlex Elder switch (opcode) { 406a8dd0a37SAlex Elder case CEPH_OSD_OP_READ: 407a8dd0a37SAlex Elder case CEPH_OSD_OP_STAT: 408a8dd0a37SAlex Elder case CEPH_OSD_OP_MAPEXT: 409a8dd0a37SAlex Elder case CEPH_OSD_OP_MASKTRUNC: 410a8dd0a37SAlex Elder case CEPH_OSD_OP_SPARSE_READ: 411a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY: 412a8dd0a37SAlex Elder case CEPH_OSD_OP_NOTIFY_ACK: 413a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_VER: 414a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITE: 415a8dd0a37SAlex Elder case CEPH_OSD_OP_WRITEFULL: 416a8dd0a37SAlex Elder case CEPH_OSD_OP_TRUNCATE: 417a8dd0a37SAlex Elder case CEPH_OSD_OP_ZERO: 418a8dd0a37SAlex Elder case CEPH_OSD_OP_DELETE: 419a8dd0a37SAlex Elder case CEPH_OSD_OP_APPEND: 420a8dd0a37SAlex Elder case CEPH_OSD_OP_STARTSYNC: 421a8dd0a37SAlex Elder case CEPH_OSD_OP_SETTRUNC: 422a8dd0a37SAlex Elder case CEPH_OSD_OP_TRIMTRUNC: 423a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPUP: 424a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPPUT: 425a8dd0a37SAlex Elder case CEPH_OSD_OP_TMAPGET: 426a8dd0a37SAlex Elder case CEPH_OSD_OP_CREATE: 427a8dd0a37SAlex Elder case CEPH_OSD_OP_ROLLBACK: 428a8dd0a37SAlex Elder case CEPH_OSD_OP_WATCH: 429a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETKEYS: 430a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALS: 431a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETHEADER: 432a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPGETVALSBYKEYS: 433a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETVALS: 434a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPSETHEADER: 435a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPCLEAR: 436a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAPRMKEYS: 437a8dd0a37SAlex Elder case CEPH_OSD_OP_OMAP_CMP: 438a8dd0a37SAlex Elder case CEPH_OSD_OP_CLONERANGE: 439a8dd0a37SAlex Elder case CEPH_OSD_OP_ASSERT_SRC_VERSION: 440a8dd0a37SAlex Elder case CEPH_OSD_OP_SRC_CMPXATTR: 441a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTR: 442a8dd0a37SAlex Elder case CEPH_OSD_OP_GETXATTRS: 443a8dd0a37SAlex Elder case CEPH_OSD_OP_CMPXATTR: 444a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTR: 445a8dd0a37SAlex Elder case CEPH_OSD_OP_SETXATTRS: 446a8dd0a37SAlex Elder case CEPH_OSD_OP_RESETXATTRS: 447a8dd0a37SAlex Elder case CEPH_OSD_OP_RMXATTR: 448a8dd0a37SAlex Elder case CEPH_OSD_OP_PULL: 449a8dd0a37SAlex Elder case CEPH_OSD_OP_PUSH: 450a8dd0a37SAlex Elder case CEPH_OSD_OP_BALANCEREADS: 451a8dd0a37SAlex Elder case CEPH_OSD_OP_UNBALANCEREADS: 452a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB: 453a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_RESERVE: 454a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_UNRESERVE: 455a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_STOP: 456a8dd0a37SAlex Elder case CEPH_OSD_OP_SCRUB_MAP: 457a8dd0a37SAlex Elder case CEPH_OSD_OP_WRLOCK: 458a8dd0a37SAlex Elder case CEPH_OSD_OP_WRUNLOCK: 459a8dd0a37SAlex Elder case CEPH_OSD_OP_RDLOCK: 460a8dd0a37SAlex Elder case CEPH_OSD_OP_RDUNLOCK: 461a8dd0a37SAlex Elder case CEPH_OSD_OP_UPLOCK: 462a8dd0a37SAlex Elder case CEPH_OSD_OP_DNLOCK: 463a8dd0a37SAlex Elder case CEPH_OSD_OP_CALL: 464a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS: 465a8dd0a37SAlex Elder case CEPH_OSD_OP_PGLS_FILTER: 466a8dd0a37SAlex Elder return true; 467a8dd0a37SAlex Elder default: 468a8dd0a37SAlex Elder return false; 469a8dd0a37SAlex Elder } 470a8dd0a37SAlex Elder } 471a8dd0a37SAlex Elder 47233803f33SAlex Elder /* 47333803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 47433803f33SAlex Elder * other information associated with them. It also serves as a 47533803f33SAlex Elder * common init routine for all the other init functions, below. 47633803f33SAlex Elder */ 477c99d2d4aSAlex Elder static struct ceph_osd_req_op * 47849719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 479c99d2d4aSAlex Elder u16 opcode) 48033803f33SAlex Elder { 481c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 482c99d2d4aSAlex Elder 483c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 48433803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 48533803f33SAlex Elder 486c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 48733803f33SAlex Elder memset(op, 0, sizeof (*op)); 48833803f33SAlex Elder op->op = opcode; 489c99d2d4aSAlex Elder 490c99d2d4aSAlex Elder return op; 49133803f33SAlex Elder } 49233803f33SAlex Elder 49349719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 49449719778SAlex Elder unsigned int which, u16 opcode) 49549719778SAlex Elder { 49649719778SAlex Elder (void)_osd_req_op_init(osd_req, which, opcode); 49749719778SAlex Elder } 49849719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 49949719778SAlex Elder 500c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 501c99d2d4aSAlex Elder unsigned int which, u16 opcode, 50233803f33SAlex Elder u64 offset, u64 length, 50333803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 50433803f33SAlex Elder { 50549719778SAlex Elder struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); 50633803f33SAlex Elder size_t payload_len = 0; 50733803f33SAlex Elder 508ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 509ad7a60deSLi Wang opcode != CEPH_OSD_OP_DELETE && opcode != CEPH_OSD_OP_ZERO && 510ad7a60deSLi Wang opcode != CEPH_OSD_OP_TRUNCATE); 51133803f33SAlex Elder 51233803f33SAlex Elder op->extent.offset = offset; 51333803f33SAlex Elder op->extent.length = length; 51433803f33SAlex Elder op->extent.truncate_size = truncate_size; 51533803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 51633803f33SAlex Elder if (opcode == CEPH_OSD_OP_WRITE) 51733803f33SAlex Elder payload_len += length; 51833803f33SAlex Elder 51933803f33SAlex Elder op->payload_len = payload_len; 52033803f33SAlex Elder } 52133803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 52233803f33SAlex Elder 523c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 524c99d2d4aSAlex Elder unsigned int which, u64 length) 525e5975c7cSAlex Elder { 526c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 527c99d2d4aSAlex Elder u64 previous; 528c99d2d4aSAlex Elder 529c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 530c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 531c99d2d4aSAlex Elder previous = op->extent.length; 532e5975c7cSAlex Elder 533e5975c7cSAlex Elder if (length == previous) 534e5975c7cSAlex Elder return; /* Nothing to do */ 535e5975c7cSAlex Elder BUG_ON(length > previous); 536e5975c7cSAlex Elder 537e5975c7cSAlex Elder op->extent.length = length; 538e5975c7cSAlex Elder op->payload_len -= previous - length; 539e5975c7cSAlex Elder } 540e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 541e5975c7cSAlex Elder 542c99d2d4aSAlex Elder void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 54304017e29SAlex Elder u16 opcode, const char *class, const char *method) 54433803f33SAlex Elder { 54549719778SAlex Elder struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); 5465f562df5SAlex Elder struct ceph_pagelist *pagelist; 54733803f33SAlex Elder size_t payload_len = 0; 54833803f33SAlex Elder size_t size; 54933803f33SAlex Elder 55033803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 55133803f33SAlex Elder 5525f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 5535f562df5SAlex Elder BUG_ON(!pagelist); 5545f562df5SAlex Elder ceph_pagelist_init(pagelist); 5555f562df5SAlex Elder 55633803f33SAlex Elder op->cls.class_name = class; 55733803f33SAlex Elder size = strlen(class); 55833803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 55933803f33SAlex Elder op->cls.class_len = size; 5605f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 56133803f33SAlex Elder payload_len += size; 56233803f33SAlex Elder 56333803f33SAlex Elder op->cls.method_name = method; 56433803f33SAlex Elder size = strlen(method); 56533803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 56633803f33SAlex Elder op->cls.method_len = size; 5675f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 56833803f33SAlex Elder payload_len += size; 56933803f33SAlex Elder 570a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 5715f562df5SAlex Elder 57233803f33SAlex Elder op->cls.argc = 0; /* currently unused */ 57333803f33SAlex Elder 57433803f33SAlex Elder op->payload_len = payload_len; 57533803f33SAlex Elder } 57633803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 5778c042b0dSAlex Elder 578c99d2d4aSAlex Elder void osd_req_op_watch_init(struct ceph_osd_request *osd_req, 579c99d2d4aSAlex Elder unsigned int which, u16 opcode, 58033803f33SAlex Elder u64 cookie, u64 version, int flag) 58133803f33SAlex Elder { 58249719778SAlex Elder struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); 58333803f33SAlex Elder 584c99d2d4aSAlex Elder BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 58533803f33SAlex Elder 58633803f33SAlex Elder op->watch.cookie = cookie; 5879ef1ee5aSAlex Elder op->watch.ver = version; 58833803f33SAlex Elder if (opcode == CEPH_OSD_OP_WATCH && flag) 58933803f33SAlex Elder op->watch.flag = (u8)1; 59033803f33SAlex Elder } 59133803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_watch_init); 59233803f33SAlex Elder 59390af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 594ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 595ec9123c5SAlex Elder { 596ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 597ec9123c5SAlex Elder 598ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 599ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 600ec9123c5SAlex Elder if (length) 60190af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 602ec9123c5SAlex Elder length, osd_data->alignment); 603ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 604ec9123c5SAlex Elder BUG_ON(!length); 60590af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 606ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 607ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 60890af3602SAlex Elder ceph_msg_data_add_bio(msg, osd_data->bio, length); 609ec9123c5SAlex Elder #endif 610ec9123c5SAlex Elder } else { 611ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 612ec9123c5SAlex Elder } 613ec9123c5SAlex Elder } 614ec9123c5SAlex Elder 615175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 61679528734SAlex Elder struct ceph_osd_op *dst, unsigned int which) 6173d14c5d2SYehuda Sadeh { 61879528734SAlex Elder struct ceph_osd_req_op *src; 61904017e29SAlex Elder struct ceph_osd_data *osd_data; 62054d50649SAlex Elder u64 request_data_len = 0; 62104017e29SAlex Elder u64 data_length; 622175face2SAlex Elder 62379528734SAlex Elder BUG_ON(which >= req->r_num_ops); 62479528734SAlex Elder src = &req->r_ops[which]; 625a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 626a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 627a8dd0a37SAlex Elder 628a8dd0a37SAlex Elder return 0; 629a8dd0a37SAlex Elder } 6303d14c5d2SYehuda Sadeh 631065a68f9SAlex Elder switch (src->op) { 632fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 63349719778SAlex Elder osd_data = &src->raw_data_in; 63449719778SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 635fbfab539SAlex Elder break; 6363d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 6373d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 638ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 639ad7a60deSLi Wang case CEPH_OSD_OP_DELETE: 640ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 641175face2SAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 64254d50649SAlex Elder request_data_len = src->extent.length; 643175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 644175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 6453d14c5d2SYehuda Sadeh dst->extent.truncate_size = 6463d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 6473d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 6483d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 64904017e29SAlex Elder osd_data = &src->extent.osd_data; 6505476492fSAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 65104017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 6525476492fSAlex Elder else 65304017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 6543d14c5d2SYehuda Sadeh break; 6553d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 6563d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 6573d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 65804017e29SAlex Elder osd_data = &src->cls.request_info; 65904017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 66004017e29SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); 66104017e29SAlex Elder request_data_len = osd_data->pagelist->length; 66204017e29SAlex Elder 66304017e29SAlex Elder osd_data = &src->cls.request_data; 66404017e29SAlex Elder data_length = ceph_osd_data_length(osd_data); 66504017e29SAlex Elder if (data_length) { 66604017e29SAlex Elder BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); 66704017e29SAlex Elder dst->cls.indata_len = cpu_to_le32(data_length); 66804017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 66904017e29SAlex Elder src->payload_len += data_length; 67004017e29SAlex Elder request_data_len += data_length; 67104017e29SAlex Elder } 67204017e29SAlex Elder osd_data = &src->cls.response_data; 67304017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 6743d14c5d2SYehuda Sadeh break; 6753d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 6763d14c5d2SYehuda Sadeh break; 677a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 678a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 679a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 680a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 681a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 682a40c4f10SYehuda Sadeh break; 6833d14c5d2SYehuda Sadeh default: 6844c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 6858f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 6864c46459cSAlex Elder WARN_ON(1); 687a8dd0a37SAlex Elder 688a8dd0a37SAlex Elder return 0; 6893d14c5d2SYehuda Sadeh } 690a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 6913d14c5d2SYehuda Sadeh dst->payload_len = cpu_to_le32(src->payload_len); 692175face2SAlex Elder 69354d50649SAlex Elder return request_data_len; 6943d14c5d2SYehuda Sadeh } 6953d14c5d2SYehuda Sadeh 6963d14c5d2SYehuda Sadeh /* 6973d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 6983d14c5d2SYehuda Sadeh * extent as needed. 6993d14c5d2SYehuda Sadeh * 7003d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 7013d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 7023d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 7033d14c5d2SYehuda Sadeh * 7043d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 7053d14c5d2SYehuda Sadeh * data quickly. 7063d14c5d2SYehuda Sadeh */ 7073d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 7083d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 7093d14c5d2SYehuda Sadeh struct ceph_vino vino, 710acead002SAlex Elder u64 off, u64 *plen, int num_ops, 7113d14c5d2SYehuda Sadeh int opcode, int flags, 7123d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 7133d14c5d2SYehuda Sadeh u32 truncate_seq, 7143d14c5d2SYehuda Sadeh u64 truncate_size, 715153e5167SAlex Elder bool use_mempool) 7163d14c5d2SYehuda Sadeh { 7173d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 71875d1c941SAlex Elder u64 objnum = 0; 71975d1c941SAlex Elder u64 objoff = 0; 72075d1c941SAlex Elder u64 objlen = 0; 721d18d1e28SAlex Elder u32 object_size; 722d18d1e28SAlex Elder u64 object_base; 7236816282dSSage Weil int r; 7243d14c5d2SYehuda Sadeh 725ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 726ad7a60deSLi Wang opcode != CEPH_OSD_OP_DELETE && opcode != CEPH_OSD_OP_ZERO && 727ad7a60deSLi Wang opcode != CEPH_OSD_OP_TRUNCATE); 7283d14c5d2SYehuda Sadeh 729acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 730ae7ca4a3SAlex Elder GFP_NOFS); 7314ad12621SSage Weil if (!req) 7326816282dSSage Weil return ERR_PTR(-ENOMEM); 73379528734SAlex Elder 734d178a9e7SAlex Elder req->r_flags = flags; 7353d14c5d2SYehuda Sadeh 7363d14c5d2SYehuda Sadeh /* calculate max write size */ 737a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 7383ff5f385SAlex Elder if (r < 0) { 7393ff5f385SAlex Elder ceph_osdc_put_request(req); 7406816282dSSage Weil return ERR_PTR(r); 7413ff5f385SAlex Elder } 742a19dadfbSAlex Elder 743d18d1e28SAlex Elder object_size = le32_to_cpu(layout->fl_object_size); 744d18d1e28SAlex Elder object_base = off - objoff; 745ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 746d18d1e28SAlex Elder if (truncate_size <= object_base) { 747d18d1e28SAlex Elder truncate_size = 0; 748d18d1e28SAlex Elder } else { 749d18d1e28SAlex Elder truncate_size -= object_base; 750d18d1e28SAlex Elder if (truncate_size > object_size) 751d18d1e28SAlex Elder truncate_size = object_size; 752d18d1e28SAlex Elder } 753ccca4e37SYan, Zheng } 754d18d1e28SAlex Elder 755c99d2d4aSAlex Elder osd_req_op_extent_init(req, 0, opcode, objoff, objlen, 756b0270324SAlex Elder truncate_size, truncate_seq); 7578c042b0dSAlex Elder 758acead002SAlex Elder /* 759acead002SAlex Elder * A second op in the ops array means the caller wants to 760acead002SAlex Elder * also issue a include a 'startsync' command so that the 761acead002SAlex Elder * osd will flush data quickly. 762acead002SAlex Elder */ 763acead002SAlex Elder if (num_ops > 1) 764c99d2d4aSAlex Elder osd_req_op_init(req, 1, CEPH_OSD_OP_STARTSYNC); 765d18d1e28SAlex Elder 76622116525SIlya Dryomov req->r_oloc.pool = ceph_file_layout_pg_pool(*layout); 7673d14c5d2SYehuda Sadeh 7684295f221SIlya Dryomov snprintf(req->r_oid.name, sizeof(req->r_oid.name), 7694295f221SIlya Dryomov "%llx.%08llx", vino.ino, objnum); 7704295f221SIlya Dryomov req->r_oid.name_len = strlen(req->r_oid.name); 771dbe0fc41SAlex Elder 7723d14c5d2SYehuda Sadeh return req; 7733d14c5d2SYehuda Sadeh } 7743d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 7753d14c5d2SYehuda Sadeh 7763d14c5d2SYehuda Sadeh /* 7773d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 7783d14c5d2SYehuda Sadeh */ 7793d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 7803d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 7813d14c5d2SYehuda Sadeh { 7823d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 7833d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 7843d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 7853d14c5d2SYehuda Sadeh 7863d14c5d2SYehuda Sadeh while (*p) { 7873d14c5d2SYehuda Sadeh parent = *p; 7883d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 7893d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 7903d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 7913d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 7923d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 7933d14c5d2SYehuda Sadeh else 7943d14c5d2SYehuda Sadeh BUG(); 7953d14c5d2SYehuda Sadeh } 7963d14c5d2SYehuda Sadeh 7973d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 7983d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 7993d14c5d2SYehuda Sadeh } 8003d14c5d2SYehuda Sadeh 8013d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 8023d14c5d2SYehuda Sadeh u64 tid) 8033d14c5d2SYehuda Sadeh { 8043d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 8053d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 8063d14c5d2SYehuda Sadeh 8073d14c5d2SYehuda Sadeh while (n) { 8083d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 8093d14c5d2SYehuda Sadeh if (tid < req->r_tid) 8103d14c5d2SYehuda Sadeh n = n->rb_left; 8113d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 8123d14c5d2SYehuda Sadeh n = n->rb_right; 8133d14c5d2SYehuda Sadeh else 8143d14c5d2SYehuda Sadeh return req; 8153d14c5d2SYehuda Sadeh } 8163d14c5d2SYehuda Sadeh return NULL; 8173d14c5d2SYehuda Sadeh } 8183d14c5d2SYehuda Sadeh 8193d14c5d2SYehuda Sadeh static struct ceph_osd_request * 8203d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 8213d14c5d2SYehuda Sadeh u64 tid) 8223d14c5d2SYehuda Sadeh { 8233d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 8243d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 8253d14c5d2SYehuda Sadeh 8263d14c5d2SYehuda Sadeh while (n) { 8273d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 8283d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 8293d14c5d2SYehuda Sadeh if (!n->rb_left) 8303d14c5d2SYehuda Sadeh return req; 8313d14c5d2SYehuda Sadeh n = n->rb_left; 8323d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 8333d14c5d2SYehuda Sadeh n = n->rb_right; 8343d14c5d2SYehuda Sadeh } else { 8353d14c5d2SYehuda Sadeh return req; 8363d14c5d2SYehuda Sadeh } 8373d14c5d2SYehuda Sadeh } 8383d14c5d2SYehuda Sadeh return NULL; 8393d14c5d2SYehuda Sadeh } 8403d14c5d2SYehuda Sadeh 8416f6c7006SSage Weil /* 8426f6c7006SSage Weil * Resubmit requests pending on the given osd. 8436f6c7006SSage Weil */ 8446f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 8456f6c7006SSage Weil struct ceph_osd *osd) 8466f6c7006SSage Weil { 847a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 848e02493c0SAlex Elder LIST_HEAD(resend); 8496f6c7006SSage Weil int err; 8506f6c7006SSage Weil 8516f6c7006SSage Weil dout("__kick_osd_requests osd%d\n", osd->o_osd); 8526f6c7006SSage Weil err = __reset_osd(osdc, osd); 853685a7555SAlex Elder if (err) 8546f6c7006SSage Weil return; 855e02493c0SAlex Elder /* 856e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 857e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 858e02493c0SAlex Elder * sent in tid order, and that is also the order they're 859e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 860e02493c0SAlex Elder * flight will be found first, followed by all requests that 861e02493c0SAlex Elder * have not yet been sent. And to resend requests while 862e02493c0SAlex Elder * preserving this order we will want to put any sent 863e02493c0SAlex Elder * requests back on the front of the osd client's unsent 864e02493c0SAlex Elder * list. 865e02493c0SAlex Elder * 866e02493c0SAlex Elder * So we build a separate ordered list of already-sent 867e02493c0SAlex Elder * requests for the affected osd and splice it onto the 868e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 869e02493c0SAlex Elder * request that has not yet been sent we're done. Those 870e02493c0SAlex Elder * requests are already sitting right where they belong. 871e02493c0SAlex Elder */ 8726f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 873e02493c0SAlex Elder if (!req->r_sent) 874e02493c0SAlex Elder break; 875e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 876e02493c0SAlex Elder dout("requeueing %p tid %llu osd%d\n", req, req->r_tid, 8776f6c7006SSage Weil osd->o_osd); 878a40c4f10SYehuda Sadeh if (!req->r_linger) 8796f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 8806f6c7006SSage Weil } 881e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 882a40c4f10SYehuda Sadeh 883e02493c0SAlex Elder /* 884e02493c0SAlex Elder * Linger requests are re-registered before sending, which 885e02493c0SAlex Elder * sets up a new tid for each. We add them to the unsent 886e02493c0SAlex Elder * list at the end to keep things in tid order. 887e02493c0SAlex Elder */ 888a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 889a40c4f10SYehuda Sadeh r_linger_osd) { 89077f38e0eSSage Weil /* 89177f38e0eSSage Weil * reregister request prior to unregistering linger so 89277f38e0eSSage Weil * that r_osd is preserved. 89377f38e0eSSage Weil */ 89477f38e0eSSage Weil BUG_ON(!list_empty(&req->r_req_lru_item)); 895a40c4f10SYehuda Sadeh __register_request(osdc, req); 896e02493c0SAlex Elder list_add_tail(&req->r_req_lru_item, &osdc->req_unsent); 897ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 89877f38e0eSSage Weil __unregister_linger_request(osdc, req); 899a40c4f10SYehuda Sadeh dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid, 900a40c4f10SYehuda Sadeh osd->o_osd); 901a40c4f10SYehuda Sadeh } 9026f6c7006SSage Weil } 9036f6c7006SSage Weil 9043d14c5d2SYehuda Sadeh /* 9053d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 9063d14c5d2SYehuda Sadeh */ 9073d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 9083d14c5d2SYehuda Sadeh { 9093d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 9103d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 9113d14c5d2SYehuda Sadeh 9123d14c5d2SYehuda Sadeh if (!osd) 9133d14c5d2SYehuda Sadeh return; 9143d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 9153d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 9163d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 91783aff95eSSage Weil mutex_lock(&osdc->request_mutex); 91883aff95eSSage Weil __kick_osd_requests(osdc, osd); 919f9d25199SAlex Elder __send_queued(osdc); 92083aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 9213d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 9223d14c5d2SYehuda Sadeh } 9233d14c5d2SYehuda Sadeh 9243d14c5d2SYehuda Sadeh /* 9253d14c5d2SYehuda Sadeh * Track open sessions with osds. 9263d14c5d2SYehuda Sadeh */ 927e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 9283d14c5d2SYehuda Sadeh { 9293d14c5d2SYehuda Sadeh struct ceph_osd *osd; 9303d14c5d2SYehuda Sadeh 9313d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 9323d14c5d2SYehuda Sadeh if (!osd) 9333d14c5d2SYehuda Sadeh return NULL; 9343d14c5d2SYehuda Sadeh 9353d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 9363d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 937e10006f8SAlex Elder osd->o_osd = onum; 938f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 9393d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 940a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 9413d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 9423d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 9433d14c5d2SYehuda Sadeh 944b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 9453d14c5d2SYehuda Sadeh 9463d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 9473d14c5d2SYehuda Sadeh return osd; 9483d14c5d2SYehuda Sadeh } 9493d14c5d2SYehuda Sadeh 9503d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 9513d14c5d2SYehuda Sadeh { 9523d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 9533d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 9543d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 9553d14c5d2SYehuda Sadeh return osd; 9563d14c5d2SYehuda Sadeh } else { 9573d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 9583d14c5d2SYehuda Sadeh return NULL; 9593d14c5d2SYehuda Sadeh } 9603d14c5d2SYehuda Sadeh } 9613d14c5d2SYehuda Sadeh 9623d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 9633d14c5d2SYehuda Sadeh { 9643d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 9653d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 966a255651dSAlex Elder if (atomic_dec_and_test(&osd->o_ref) && osd->o_auth.authorizer) { 9673d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 9683d14c5d2SYehuda Sadeh 96927859f97SSage Weil ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); 9703d14c5d2SYehuda Sadeh kfree(osd); 9713d14c5d2SYehuda Sadeh } 9723d14c5d2SYehuda Sadeh } 9733d14c5d2SYehuda Sadeh 9743d14c5d2SYehuda Sadeh /* 9753d14c5d2SYehuda Sadeh * remove an osd from our map 9763d14c5d2SYehuda Sadeh */ 9773d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 9783d14c5d2SYehuda Sadeh { 9793d14c5d2SYehuda Sadeh dout("__remove_osd %p\n", osd); 9803d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_requests)); 9813d14c5d2SYehuda Sadeh rb_erase(&osd->o_node, &osdc->osds); 9823d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 9833d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 9843d14c5d2SYehuda Sadeh put_osd(osd); 9853d14c5d2SYehuda Sadeh } 9863d14c5d2SYehuda Sadeh 987aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 988aca420bcSSage Weil { 989048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 990aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 991aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 992aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 993aca420bcSSage Weil struct ceph_osd, o_node); 994aca420bcSSage Weil __remove_osd(osdc, osd); 995aca420bcSSage Weil } 996aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 997aca420bcSSage Weil } 998aca420bcSSage Weil 9993d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 10003d14c5d2SYehuda Sadeh struct ceph_osd *osd) 10013d14c5d2SYehuda Sadeh { 10023d14c5d2SYehuda Sadeh dout("__move_osd_to_lru %p\n", osd); 10033d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 10043d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 10053d14c5d2SYehuda Sadeh osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; 10063d14c5d2SYehuda Sadeh } 10073d14c5d2SYehuda Sadeh 10083d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 10093d14c5d2SYehuda Sadeh { 10103d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 10113d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 10123d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 10133d14c5d2SYehuda Sadeh } 10143d14c5d2SYehuda Sadeh 1015aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 10163d14c5d2SYehuda Sadeh { 10173d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 10183d14c5d2SYehuda Sadeh 10193d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 10203d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 10213d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 1022aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 10233d14c5d2SYehuda Sadeh break; 10243d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 10253d14c5d2SYehuda Sadeh } 10263d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 10273d14c5d2SYehuda Sadeh } 10283d14c5d2SYehuda Sadeh 10293d14c5d2SYehuda Sadeh /* 10303d14c5d2SYehuda Sadeh * reset osd connect 10313d14c5d2SYehuda Sadeh */ 10323d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 10333d14c5d2SYehuda Sadeh { 1034c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 10353d14c5d2SYehuda Sadeh 10363d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 1037a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 1038a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 10393d14c5d2SYehuda Sadeh __remove_osd(osdc, osd); 1040c3acb181SAlex Elder 1041c3acb181SAlex Elder return -ENODEV; 1042c3acb181SAlex Elder } 1043c3acb181SAlex Elder 1044c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 1045c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 10463d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 1047c3acb181SAlex Elder struct ceph_osd_request *req; 1048c3acb181SAlex Elder 10493d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 10500b4af2e8SIlya Dryomov "letting msgr retry\n"); 10513d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 10523d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 10533d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1054c3acb181SAlex Elder 1055c3acb181SAlex Elder return -EAGAIN; 10563d14c5d2SYehuda Sadeh } 1057c3acb181SAlex Elder 1058c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1059c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1060c3acb181SAlex Elder osd->o_incarnation++; 1061c3acb181SAlex Elder 1062c3acb181SAlex Elder return 0; 10633d14c5d2SYehuda Sadeh } 10643d14c5d2SYehuda Sadeh 10653d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 10663d14c5d2SYehuda Sadeh { 10673d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 10683d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 10693d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 10703d14c5d2SYehuda Sadeh 1071aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 10723d14c5d2SYehuda Sadeh while (*p) { 10733d14c5d2SYehuda Sadeh parent = *p; 10743d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 10753d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 10763d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 10773d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 10783d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 10793d14c5d2SYehuda Sadeh else 10803d14c5d2SYehuda Sadeh BUG(); 10813d14c5d2SYehuda Sadeh } 10823d14c5d2SYehuda Sadeh 10833d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 10843d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 10853d14c5d2SYehuda Sadeh } 10863d14c5d2SYehuda Sadeh 10873d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 10883d14c5d2SYehuda Sadeh { 10893d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10903d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 10913d14c5d2SYehuda Sadeh 10923d14c5d2SYehuda Sadeh while (n) { 10933d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 10943d14c5d2SYehuda Sadeh if (o < osd->o_osd) 10953d14c5d2SYehuda Sadeh n = n->rb_left; 10963d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 10973d14c5d2SYehuda Sadeh n = n->rb_right; 10983d14c5d2SYehuda Sadeh else 10993d14c5d2SYehuda Sadeh return osd; 11003d14c5d2SYehuda Sadeh } 11013d14c5d2SYehuda Sadeh return NULL; 11023d14c5d2SYehuda Sadeh } 11033d14c5d2SYehuda Sadeh 11043d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 11053d14c5d2SYehuda Sadeh { 11063d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 11073d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ); 11083d14c5d2SYehuda Sadeh } 11093d14c5d2SYehuda Sadeh 11103d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 11113d14c5d2SYehuda Sadeh { 11123d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 11133d14c5d2SYehuda Sadeh } 11143d14c5d2SYehuda Sadeh 11153d14c5d2SYehuda Sadeh /* 11163d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 11173d14c5d2SYehuda Sadeh * the timeout event. 11183d14c5d2SYehuda Sadeh */ 1119a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 11203d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 11213d14c5d2SYehuda Sadeh { 11223d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 11233d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 112477f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 11253d14c5d2SYehuda Sadeh __insert_request(osdc, req); 11263d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 11273d14c5d2SYehuda Sadeh osdc->num_requests++; 11283d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 11293d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 11303d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 11313d14c5d2SYehuda Sadeh } 1132a40c4f10SYehuda Sadeh } 1133a40c4f10SYehuda Sadeh 11343d14c5d2SYehuda Sadeh /* 11353d14c5d2SYehuda Sadeh * called under osdc->request_mutex 11363d14c5d2SYehuda Sadeh */ 11373d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 11383d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 11393d14c5d2SYehuda Sadeh { 114035f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 114135f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 114235f9f8a0SSage Weil req, req->r_tid); 114335f9f8a0SSage Weil return; 114435f9f8a0SSage Weil } 114535f9f8a0SSage Weil 11463d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 11473d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 11483d14c5d2SYehuda Sadeh osdc->num_requests--; 11493d14c5d2SYehuda Sadeh 11503d14c5d2SYehuda Sadeh if (req->r_osd) { 11513d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 11526740a845SAlex Elder ceph_msg_revoke(req->r_request); 11533d14c5d2SYehuda Sadeh 11543d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1155a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 1156a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 1157a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 11583d14c5d2SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 1159a40c4f10SYehuda Sadeh } 1160fbdb9190SSage Weil if (list_empty(&req->r_linger_item)) 11613d14c5d2SYehuda Sadeh req->r_osd = NULL; 11623d14c5d2SYehuda Sadeh } 11633d14c5d2SYehuda Sadeh 11647d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 11653d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 11663d14c5d2SYehuda Sadeh 11673d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 11683d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 11693d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 11703d14c5d2SYehuda Sadeh } 11713d14c5d2SYehuda Sadeh } 11723d14c5d2SYehuda Sadeh 11733d14c5d2SYehuda Sadeh /* 11743d14c5d2SYehuda Sadeh * Cancel a previously queued request message 11753d14c5d2SYehuda Sadeh */ 11763d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 11773d14c5d2SYehuda Sadeh { 11783d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 11796740a845SAlex Elder ceph_msg_revoke(req->r_request); 11803d14c5d2SYehuda Sadeh req->r_sent = 0; 11813d14c5d2SYehuda Sadeh } 11823d14c5d2SYehuda Sadeh } 11833d14c5d2SYehuda Sadeh 1184a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1185a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1186a40c4f10SYehuda Sadeh { 1187a40c4f10SYehuda Sadeh dout("__register_linger_request %p\n", req); 118896e4dac6SAlex Elder ceph_osdc_get_request(req); 1189a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 11906194ea89SSage Weil if (req->r_osd) 11916194ea89SSage Weil list_add_tail(&req->r_linger_osd, 11926194ea89SSage Weil &req->r_osd->o_linger_requests); 1193a40c4f10SYehuda Sadeh } 1194a40c4f10SYehuda Sadeh 1195a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1196a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1197a40c4f10SYehuda Sadeh { 1198a40c4f10SYehuda Sadeh dout("__unregister_linger_request %p\n", req); 1199a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 120061c74035SAlex Elder if (req->r_osd) { 1201a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_osd); 1202a40c4f10SYehuda Sadeh 1203a40c4f10SYehuda Sadeh if (list_empty(&req->r_osd->o_requests) && 1204a40c4f10SYehuda Sadeh list_empty(&req->r_osd->o_linger_requests)) { 1205a40c4f10SYehuda Sadeh dout("moving osd to %p lru\n", req->r_osd); 1206a40c4f10SYehuda Sadeh __move_osd_to_lru(osdc, req->r_osd); 1207a40c4f10SYehuda Sadeh } 1208fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1209a40c4f10SYehuda Sadeh req->r_osd = NULL; 1210a40c4f10SYehuda Sadeh } 121196e4dac6SAlex Elder ceph_osdc_put_request(req); 1212a40c4f10SYehuda Sadeh } 1213a40c4f10SYehuda Sadeh 1214a40c4f10SYehuda Sadeh void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc, 1215a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1216a40c4f10SYehuda Sadeh { 1217a40c4f10SYehuda Sadeh mutex_lock(&osdc->request_mutex); 1218a40c4f10SYehuda Sadeh if (req->r_linger) { 1219c10ebbf5SAlex Elder req->r_linger = 0; 122096e4dac6SAlex Elder __unregister_linger_request(osdc, req); 1221a40c4f10SYehuda Sadeh } 1222a40c4f10SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1223a40c4f10SYehuda Sadeh } 1224a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_unregister_linger_request); 1225a40c4f10SYehuda Sadeh 1226a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1227a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1228a40c4f10SYehuda Sadeh { 1229a40c4f10SYehuda Sadeh if (!req->r_linger) { 1230a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1231a40c4f10SYehuda Sadeh req->r_linger = 1; 1232a40c4f10SYehuda Sadeh } 1233a40c4f10SYehuda Sadeh } 1234a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1235a40c4f10SYehuda Sadeh 12363d14c5d2SYehuda Sadeh /* 1237d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1238d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1239d29adb34SJosh Durgin * 1240d29adb34SJosh Durgin * Caller should hold map_sem for read. 1241d29adb34SJosh Durgin */ 1242d29adb34SJosh Durgin static bool __req_should_be_paused(struct ceph_osd_client *osdc, 1243d29adb34SJosh Durgin struct ceph_osd_request *req) 1244d29adb34SJosh Durgin { 1245d29adb34SJosh Durgin bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 1246d29adb34SJosh Durgin bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 1247d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 1248d29adb34SJosh Durgin return (req->r_flags & CEPH_OSD_FLAG_READ && pauserd) || 1249d29adb34SJosh Durgin (req->r_flags & CEPH_OSD_FLAG_WRITE && pausewr); 1250d29adb34SJosh Durgin } 1251d29adb34SJosh Durgin 1252d29adb34SJosh Durgin /* 12533d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 12543d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 125525985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 12566f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 12573d14c5d2SYehuda Sadeh * 12583d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 12593d14c5d2SYehuda Sadeh * 12603d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 12613d14c5d2SYehuda Sadeh */ 12626f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 126338d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 12643d14c5d2SYehuda Sadeh { 12655b191d99SSage Weil struct ceph_pg pgid; 12663d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 12673d14c5d2SYehuda Sadeh int o = -1, num = 0; 12683d14c5d2SYehuda Sadeh int err; 1269d29adb34SJosh Durgin bool was_paused; 12703d14c5d2SYehuda Sadeh 12716f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 12724295f221SIlya Dryomov err = ceph_calc_ceph_pg(&pgid, req->r_oid.name, osdc->osdmap, 127322116525SIlya Dryomov req->r_oloc.pool); 12746f6c7006SSage Weil if (err) { 12756f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 12763d14c5d2SYehuda Sadeh return err; 12776f6c7006SSage Weil } 12783d14c5d2SYehuda Sadeh req->r_pgid = pgid; 12793d14c5d2SYehuda Sadeh 12803d14c5d2SYehuda Sadeh err = ceph_calc_pg_acting(osdc->osdmap, pgid, acting); 12813d14c5d2SYehuda Sadeh if (err > 0) { 12823d14c5d2SYehuda Sadeh o = acting[0]; 12833d14c5d2SYehuda Sadeh num = err; 12843d14c5d2SYehuda Sadeh } 12853d14c5d2SYehuda Sadeh 1286d29adb34SJosh Durgin was_paused = req->r_paused; 1287d29adb34SJosh Durgin req->r_paused = __req_should_be_paused(osdc, req); 1288d29adb34SJosh Durgin if (was_paused && !req->r_paused) 1289d29adb34SJosh Durgin force_resend = 1; 1290d29adb34SJosh Durgin 129138d6453cSSage Weil if ((!force_resend && 129238d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 12933d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 12943d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 12953d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 1296d29adb34SJosh Durgin (req->r_osd == NULL && o == -1) || 1297d29adb34SJosh Durgin req->r_paused) 12983d14c5d2SYehuda Sadeh return 0; /* no change */ 12993d14c5d2SYehuda Sadeh 13005b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 13015b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 13023d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 13033d14c5d2SYehuda Sadeh 13043d14c5d2SYehuda Sadeh /* record full pg acting set */ 13053d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 13063d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 13073d14c5d2SYehuda Sadeh 13083d14c5d2SYehuda Sadeh if (req->r_osd) { 13093d14c5d2SYehuda Sadeh __cancel_request(req); 13103d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 13113d14c5d2SYehuda Sadeh req->r_osd = NULL; 13123d14c5d2SYehuda Sadeh } 13133d14c5d2SYehuda Sadeh 13143d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 13153d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 13163d14c5d2SYehuda Sadeh err = -ENOMEM; 1317e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 13186f6c7006SSage Weil if (!req->r_osd) { 13196f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 13203d14c5d2SYehuda Sadeh goto out; 13216f6c7006SSage Weil } 13223d14c5d2SYehuda Sadeh 13236f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 13243d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 13253d14c5d2SYehuda Sadeh 1326b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1327b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1328b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 13293d14c5d2SYehuda Sadeh } 13303d14c5d2SYehuda Sadeh 13313d14c5d2SYehuda Sadeh if (req->r_osd) { 13323d14c5d2SYehuda Sadeh __remove_osd_from_lru(req->r_osd); 1333ad885927SAlex Elder list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1334ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 13356f6c7006SSage Weil } else { 1336ad885927SAlex Elder list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 13373d14c5d2SYehuda Sadeh } 13383d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 13393d14c5d2SYehuda Sadeh 13403d14c5d2SYehuda Sadeh out: 13413d14c5d2SYehuda Sadeh return err; 13423d14c5d2SYehuda Sadeh } 13433d14c5d2SYehuda Sadeh 13443d14c5d2SYehuda Sadeh /* 13453d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 13463d14c5d2SYehuda Sadeh */ 134756e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 13483d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 13493d14c5d2SYehuda Sadeh { 13501b83bef2SSage Weil void *p; 13513d14c5d2SYehuda Sadeh 13521b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 13531b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 13541b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 13553d14c5d2SYehuda Sadeh 13561b83bef2SSage Weil /* fill in message content that changes each time we send it */ 13571b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 13581b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 135922116525SIlya Dryomov put_unaligned_le64(req->r_oloc.pool, req->r_request_pool); 13601b83bef2SSage Weil p = req->r_request_pgid; 13611b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 13621b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 13631b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 13641b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 13651b83bef2SSage Weil sizeof(req->r_reassert_version)); 13662169aea6SSage Weil 13673d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 13683d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 13693d14c5d2SYehuda Sadeh 13703d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 137126be8808SAlex Elder 13723d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 137326be8808SAlex Elder 137426be8808SAlex Elder ceph_con_send(&req->r_osd->o_con, req->r_request); 13753d14c5d2SYehuda Sadeh } 13763d14c5d2SYehuda Sadeh 13773d14c5d2SYehuda Sadeh /* 13786f6c7006SSage Weil * Send any requests in the queue (req_unsent). 13796f6c7006SSage Weil */ 1380f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 13816f6c7006SSage Weil { 13826f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 13836f6c7006SSage Weil 1384f9d25199SAlex Elder dout("__send_queued\n"); 1385f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 13866f6c7006SSage Weil __send_request(osdc, req); 13876f6c7006SSage Weil } 13886f6c7006SSage Weil 13896f6c7006SSage Weil /* 13903d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 13913d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 13923d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 13933d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 13943d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 13953d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 13963d14c5d2SYehuda Sadeh * there are no open requests). 13973d14c5d2SYehuda Sadeh */ 13983d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 13993d14c5d2SYehuda Sadeh { 14003d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 14013d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 140283aff95eSSage Weil struct ceph_osd_request *req; 14033d14c5d2SYehuda Sadeh struct ceph_osd *osd; 14043d14c5d2SYehuda Sadeh unsigned long keepalive = 14053d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ; 14063d14c5d2SYehuda Sadeh struct list_head slow_osds; 14073d14c5d2SYehuda Sadeh dout("timeout\n"); 14083d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 14093d14c5d2SYehuda Sadeh 14103d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 14113d14c5d2SYehuda Sadeh 14123d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 14133d14c5d2SYehuda Sadeh 14143d14c5d2SYehuda Sadeh /* 14153d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 14163d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 14173d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 14183d14c5d2SYehuda Sadeh */ 14193d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 14203d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 14213d14c5d2SYehuda Sadeh if (time_before(jiffies, req->r_stamp + keepalive)) 14223d14c5d2SYehuda Sadeh break; 14233d14c5d2SYehuda Sadeh 14243d14c5d2SYehuda Sadeh osd = req->r_osd; 14253d14c5d2SYehuda Sadeh BUG_ON(!osd); 14263d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 14273d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 14283d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 14293d14c5d2SYehuda Sadeh } 14303d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 14313d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 14323d14c5d2SYehuda Sadeh o_keepalive_item); 14333d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 14343d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 14353d14c5d2SYehuda Sadeh } 14363d14c5d2SYehuda Sadeh 14373d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1438f9d25199SAlex Elder __send_queued(osdc); 14393d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 14403d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 14413d14c5d2SYehuda Sadeh } 14423d14c5d2SYehuda Sadeh 14433d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 14443d14c5d2SYehuda Sadeh { 14453d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 14463d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 14473d14c5d2SYehuda Sadeh osds_timeout_work.work); 14483d14c5d2SYehuda Sadeh unsigned long delay = 14493d14c5d2SYehuda Sadeh osdc->client->options->osd_idle_ttl * HZ >> 2; 14503d14c5d2SYehuda Sadeh 14513d14c5d2SYehuda Sadeh dout("osds timeout\n"); 14523d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1453aca420bcSSage Weil remove_old_osds(osdc); 14543d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 14553d14c5d2SYehuda Sadeh 14563d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 14573d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 14583d14c5d2SYehuda Sadeh } 14593d14c5d2SYehuda Sadeh 146025845472SSage Weil static void complete_request(struct ceph_osd_request *req) 146125845472SSage Weil { 146225845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 146325845472SSage Weil } 146425845472SSage Weil 14653d14c5d2SYehuda Sadeh /* 14663d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 14673d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 14683d14c5d2SYehuda Sadeh */ 14693d14c5d2SYehuda Sadeh static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 14703d14c5d2SYehuda Sadeh struct ceph_connection *con) 14713d14c5d2SYehuda Sadeh { 14721b83bef2SSage Weil void *p, *end; 14733d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 14743d14c5d2SYehuda Sadeh u64 tid; 14751b83bef2SSage Weil int object_len; 147679528734SAlex Elder unsigned int numops; 147779528734SAlex Elder int payload_len, flags; 14783d14c5d2SYehuda Sadeh s32 result; 14791b83bef2SSage Weil s32 retry_attempt; 14801b83bef2SSage Weil struct ceph_pg pg; 14811b83bef2SSage Weil int err; 14821b83bef2SSage Weil u32 reassert_epoch; 14831b83bef2SSage Weil u64 reassert_version; 14841b83bef2SSage Weil u32 osdmap_epoch; 14850d5af164SAlex Elder int already_completed; 14869fc6e064SAlex Elder u32 bytes; 148779528734SAlex Elder unsigned int i; 14883d14c5d2SYehuda Sadeh 14893d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 14901b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 14911b83bef2SSage Weil 14921b83bef2SSage Weil p = msg->front.iov_base; 14931b83bef2SSage Weil end = p + msg->front.iov_len; 14941b83bef2SSage Weil 14951b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 14961b83bef2SSage Weil object_len = ceph_decode_32(&p); 14971b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 14981b83bef2SSage Weil p += object_len; 14991b83bef2SSage Weil 1500ef4859d6SAlex Elder err = ceph_decode_pgid(&p, end, &pg); 15011b83bef2SSage Weil if (err) 15023d14c5d2SYehuda Sadeh goto bad; 15031b83bef2SSage Weil 15041b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 15051b83bef2SSage Weil flags = ceph_decode_64(&p); 15061b83bef2SSage Weil result = ceph_decode_32(&p); 15071b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 15081b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 15091b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 15101b83bef2SSage Weil 15113d14c5d2SYehuda Sadeh /* lookup */ 15123d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 15133d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 15143d14c5d2SYehuda Sadeh if (req == NULL) { 15153d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 15168058fd45SAlex Elder goto bad_mutex; 15173d14c5d2SYehuda Sadeh } 15183d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 15191b83bef2SSage Weil 15201b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 15211b83bef2SSage Weil req, result); 15221b83bef2SSage Weil 152318741196SDan Carpenter ceph_decode_need(&p, end, 4, bad_put); 15241b83bef2SSage Weil numops = ceph_decode_32(&p); 15251b83bef2SSage Weil if (numops > CEPH_OSD_MAX_OP) 15261b83bef2SSage Weil goto bad_put; 15271b83bef2SSage Weil if (numops != req->r_num_ops) 15281b83bef2SSage Weil goto bad_put; 15291b83bef2SSage Weil payload_len = 0; 153018741196SDan Carpenter ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put); 15311b83bef2SSage Weil for (i = 0; i < numops; i++) { 15321b83bef2SSage Weil struct ceph_osd_op *op = p; 15331b83bef2SSage Weil int len; 15341b83bef2SSage Weil 15351b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 15361b83bef2SSage Weil req->r_reply_op_len[i] = len; 15371b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 15381b83bef2SSage Weil payload_len += len; 15391b83bef2SSage Weil p += sizeof(*op); 15401b83bef2SSage Weil } 15419fc6e064SAlex Elder bytes = le32_to_cpu(msg->hdr.data_len); 15429fc6e064SAlex Elder if (payload_len != bytes) { 15431b83bef2SSage Weil pr_warning("sum of op payload lens %d != data_len %d", 15449fc6e064SAlex Elder payload_len, bytes); 15451b83bef2SSage Weil goto bad_put; 15461b83bef2SSage Weil } 15471b83bef2SSage Weil 154818741196SDan Carpenter ceph_decode_need(&p, end, 4 + numops * 4, bad_put); 15491b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 15501b83bef2SSage Weil for (i = 0; i < numops; i++) 15511b83bef2SSage Weil req->r_reply_op_result[i] = ceph_decode_32(&p); 15523d14c5d2SYehuda Sadeh 1553eb845ff1SYan, Zheng already_completed = req->r_got_reply; 1554eb845ff1SYan, Zheng 15553d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 15563d14c5d2SYehuda Sadeh 15571b83bef2SSage Weil req->r_result = result; 15583d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 15593d14c5d2SYehuda Sadeh bytes); 15603d14c5d2SYehuda Sadeh if (req->r_result == 0) 15613d14c5d2SYehuda Sadeh req->r_result = bytes; 15623d14c5d2SYehuda Sadeh 15633d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 15641b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 15651b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 15663d14c5d2SYehuda Sadeh 15673d14c5d2SYehuda Sadeh req->r_got_reply = 1; 15683d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 15693d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 15703d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 15713d14c5d2SYehuda Sadeh goto done; 15723d14c5d2SYehuda Sadeh } 15733d14c5d2SYehuda Sadeh 15743d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 15753d14c5d2SYehuda Sadeh 1576a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1577a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1578a40c4f10SYehuda Sadeh 15793d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 15803d14c5d2SYehuda Sadeh if (result < 0 || 15813d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 15823d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 15833d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 15843d14c5d2SYehuda Sadeh 15853d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 15863d14c5d2SYehuda Sadeh 1587eb845ff1SYan, Zheng if (!already_completed) { 158861c5d6bfSYan, Zheng if (req->r_unsafe_callback && 158961c5d6bfSYan, Zheng result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK)) 159061c5d6bfSYan, Zheng req->r_unsafe_callback(req, true); 15913d14c5d2SYehuda Sadeh if (req->r_callback) 15923d14c5d2SYehuda Sadeh req->r_callback(req, msg); 15933d14c5d2SYehuda Sadeh else 15943d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 1595eb845ff1SYan, Zheng } 15963d14c5d2SYehuda Sadeh 159761c5d6bfSYan, Zheng if (flags & CEPH_OSD_FLAG_ONDISK) { 159861c5d6bfSYan, Zheng if (req->r_unsafe_callback && already_completed) 159961c5d6bfSYan, Zheng req->r_unsafe_callback(req, false); 160025845472SSage Weil complete_request(req); 160161c5d6bfSYan, Zheng } 16023d14c5d2SYehuda Sadeh 16033d14c5d2SYehuda Sadeh done: 1604a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 16053d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 16063d14c5d2SYehuda Sadeh return; 16073d14c5d2SYehuda Sadeh 16081b83bef2SSage Weil bad_put: 160937c89bdeSLi Wang req->r_result = -EIO; 161037c89bdeSLi Wang __unregister_request(osdc, req); 161137c89bdeSLi Wang if (req->r_callback) 161237c89bdeSLi Wang req->r_callback(req, msg); 161337c89bdeSLi Wang else 161437c89bdeSLi Wang complete_all(&req->r_completion); 161537c89bdeSLi Wang complete_request(req); 16161b83bef2SSage Weil ceph_osdc_put_request(req); 16178058fd45SAlex Elder bad_mutex: 16188058fd45SAlex Elder mutex_unlock(&osdc->request_mutex); 16193d14c5d2SYehuda Sadeh bad: 16201b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 16211b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 16223d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 16233d14c5d2SYehuda Sadeh } 16243d14c5d2SYehuda Sadeh 16256f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 16263d14c5d2SYehuda Sadeh { 16273d14c5d2SYehuda Sadeh struct rb_node *p, *n; 16283d14c5d2SYehuda Sadeh 16293d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 16306f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 16313d14c5d2SYehuda Sadeh 16323d14c5d2SYehuda Sadeh n = rb_next(p); 16333d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 16343d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 16353d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 16363d14c5d2SYehuda Sadeh osd->o_osd), 16373d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 16383d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 16393d14c5d2SYehuda Sadeh } 16403d14c5d2SYehuda Sadeh } 16413d14c5d2SYehuda Sadeh 16423d14c5d2SYehuda Sadeh /* 16436f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 16446f6c7006SSage Weil * no osd, request a new map. 16453d14c5d2SYehuda Sadeh * 1646e6d50f67SAlex Elder * Caller should hold map_sem for read. 16473d14c5d2SYehuda Sadeh */ 16489a1ea2dbSJosh Durgin static void kick_requests(struct ceph_osd_client *osdc, bool force_resend, 16499a1ea2dbSJosh Durgin bool force_resend_writes) 16503d14c5d2SYehuda Sadeh { 1651a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 16526f6c7006SSage Weil struct rb_node *p; 16536f6c7006SSage Weil int needmap = 0; 16546f6c7006SSage Weil int err; 16559a1ea2dbSJosh Durgin bool force_resend_req; 16563d14c5d2SYehuda Sadeh 16579a1ea2dbSJosh Durgin dout("kick_requests %s %s\n", force_resend ? " (force resend)" : "", 16589a1ea2dbSJosh Durgin force_resend_writes ? " (force resend writes)" : ""); 16593d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 16606194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 16616f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 16626194ea89SSage Weil p = rb_next(p); 1663ab60b16dSAlex Elder 1664ab60b16dSAlex Elder /* 1665ab60b16dSAlex Elder * For linger requests that have not yet been 1666ab60b16dSAlex Elder * registered, move them to the linger list; they'll 1667ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 1668ab60b16dSAlex Elder * the request before re-registering it as a linger 1669ab60b16dSAlex Elder * request to ensure the __map_request() below 1670ab60b16dSAlex Elder * will decide it needs to be sent. 1671ab60b16dSAlex Elder */ 1672ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 1673ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 1674ab60b16dSAlex Elder req, req->r_tid, 1675ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 167696e4dac6SAlex Elder ceph_osdc_get_request(req); 1677ab60b16dSAlex Elder __unregister_request(osdc, req); 1678ab60b16dSAlex Elder __register_linger_request(osdc, req); 167996e4dac6SAlex Elder ceph_osdc_put_request(req); 1680ab60b16dSAlex Elder continue; 1681ab60b16dSAlex Elder } 1682ab60b16dSAlex Elder 16839a1ea2dbSJosh Durgin force_resend_req = force_resend || 16849a1ea2dbSJosh Durgin (force_resend_writes && 16859a1ea2dbSJosh Durgin req->r_flags & CEPH_OSD_FLAG_WRITE); 16869a1ea2dbSJosh Durgin err = __map_request(osdc, req, force_resend_req); 16876f6c7006SSage Weil if (err < 0) 16886f6c7006SSage Weil continue; /* error */ 16896f6c7006SSage Weil if (req->r_osd == NULL) { 16906f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 16916f6c7006SSage Weil needmap++; /* request a newer map */ 16926f6c7006SSage Weil } else if (err > 0) { 16936194ea89SSage Weil if (!req->r_linger) { 16946194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 16956194ea89SSage Weil req->r_tid, 16966f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 16976f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 16986f6c7006SSage Weil } 16996f6c7006SSage Weil } 17006194ea89SSage Weil } 1701a40c4f10SYehuda Sadeh 1702a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 1703a40c4f10SYehuda Sadeh r_linger_item) { 1704a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 1705a40c4f10SYehuda Sadeh 17069a1ea2dbSJosh Durgin err = __map_request(osdc, req, 17079a1ea2dbSJosh Durgin force_resend || force_resend_writes); 1708ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 1709a40c4f10SYehuda Sadeh if (err == 0) 1710a40c4f10SYehuda Sadeh continue; /* no change and no osd was specified */ 1711a40c4f10SYehuda Sadeh if (err < 0) 1712a40c4f10SYehuda Sadeh continue; /* hrm! */ 1713a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 1714a40c4f10SYehuda Sadeh dout("tid %llu maps to no valid osd\n", req->r_tid); 1715a40c4f10SYehuda Sadeh needmap++; /* request a newer map */ 1716a40c4f10SYehuda Sadeh continue; 1717a40c4f10SYehuda Sadeh } 1718a40c4f10SYehuda Sadeh 1719a40c4f10SYehuda Sadeh dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, 1720a40c4f10SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 1721a40c4f10SYehuda Sadeh __register_request(osdc, req); 1722c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 1723a40c4f10SYehuda Sadeh } 172414d2f38dSAlex Elder reset_changed_osds(osdc); 17253d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 17263d14c5d2SYehuda Sadeh 17273d14c5d2SYehuda Sadeh if (needmap) { 17283d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 17293d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 17303d14c5d2SYehuda Sadeh } 17313d14c5d2SYehuda Sadeh } 17326f6c7006SSage Weil 17336f6c7006SSage Weil 17343d14c5d2SYehuda Sadeh /* 17353d14c5d2SYehuda Sadeh * Process updated osd map. 17363d14c5d2SYehuda Sadeh * 17373d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 17383d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 17393d14c5d2SYehuda Sadeh * off to different OSDs as needed. 17403d14c5d2SYehuda Sadeh */ 17413d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 17423d14c5d2SYehuda Sadeh { 17433d14c5d2SYehuda Sadeh void *p, *end, *next; 17443d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 17453d14c5d2SYehuda Sadeh u32 epoch; 17463d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 17473d14c5d2SYehuda Sadeh int err; 17483d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 17499a1ea2dbSJosh Durgin bool was_full; 17503d14c5d2SYehuda Sadeh 17513d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 17523d14c5d2SYehuda Sadeh p = msg->front.iov_base; 17533d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 17543d14c5d2SYehuda Sadeh 17553d14c5d2SYehuda Sadeh /* verify fsid */ 17563d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 17573d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 17583d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 17593d14c5d2SYehuda Sadeh return; 17603d14c5d2SYehuda Sadeh 17613d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 17623d14c5d2SYehuda Sadeh 17639a1ea2dbSJosh Durgin was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 17649a1ea2dbSJosh Durgin 17653d14c5d2SYehuda Sadeh /* incremental maps */ 17663d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 17673d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 17683d14c5d2SYehuda Sadeh while (nr_maps > 0) { 17693d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 17703d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 17713d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 17723d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 17733d14c5d2SYehuda Sadeh next = p + maplen; 17743d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 17753d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 17763d14c5d2SYehuda Sadeh epoch, maplen); 17773d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 17783d14c5d2SYehuda Sadeh osdc->osdmap, 177915d9882cSAlex Elder &osdc->client->msgr); 17803d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 17813d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 17823d14c5d2SYehuda Sadeh goto bad; 17833d14c5d2SYehuda Sadeh } 17843d14c5d2SYehuda Sadeh BUG_ON(!newmap); 17853d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 17863d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 17873d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 17883d14c5d2SYehuda Sadeh } 17899a1ea2dbSJosh Durgin was_full = was_full || 17909a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 17919a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 17929a1ea2dbSJosh Durgin kick_requests(osdc, 0, was_full); 17933d14c5d2SYehuda Sadeh } else { 17943d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 17953d14c5d2SYehuda Sadeh epoch, maplen); 17963d14c5d2SYehuda Sadeh } 17973d14c5d2SYehuda Sadeh p = next; 17983d14c5d2SYehuda Sadeh nr_maps--; 17993d14c5d2SYehuda Sadeh } 18003d14c5d2SYehuda Sadeh if (newmap) 18013d14c5d2SYehuda Sadeh goto done; 18023d14c5d2SYehuda Sadeh 18033d14c5d2SYehuda Sadeh /* full maps */ 18043d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 18053d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 18063d14c5d2SYehuda Sadeh while (nr_maps) { 18073d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 18083d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 18093d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 18103d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 18113d14c5d2SYehuda Sadeh if (nr_maps > 1) { 18123d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 18133d14c5d2SYehuda Sadeh epoch, maplen); 18143d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 18153d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 18163d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 18173d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 18183d14c5d2SYehuda Sadeh } else { 181938d6453cSSage Weil int skipped_map = 0; 182038d6453cSSage Weil 18213d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 18223d14c5d2SYehuda Sadeh newmap = osdmap_decode(&p, p+maplen); 18233d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 18243d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 18253d14c5d2SYehuda Sadeh goto bad; 18263d14c5d2SYehuda Sadeh } 18273d14c5d2SYehuda Sadeh BUG_ON(!newmap); 18283d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 18293d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 183038d6453cSSage Weil if (oldmap) { 183138d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 183238d6453cSSage Weil skipped_map = 1; 18333d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 183438d6453cSSage Weil } 18359a1ea2dbSJosh Durgin was_full = was_full || 18369a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 18379a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 18389a1ea2dbSJosh Durgin kick_requests(osdc, skipped_map, was_full); 18393d14c5d2SYehuda Sadeh } 18403d14c5d2SYehuda Sadeh p += maplen; 18413d14c5d2SYehuda Sadeh nr_maps--; 18423d14c5d2SYehuda Sadeh } 18433d14c5d2SYehuda Sadeh 1844b72e19b9SDan Carpenter if (!osdc->osdmap) 1845b72e19b9SDan Carpenter goto bad; 18463d14c5d2SYehuda Sadeh done: 18473d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 18483d14c5d2SYehuda Sadeh ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); 1849cd634fb6SSage Weil 1850cd634fb6SSage Weil /* 1851cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 1852cd634fb6SSage Weil * we find out when we are no longer full and stop returning 1853cd634fb6SSage Weil * ENOSPC. 1854cd634fb6SSage Weil */ 1855d29adb34SJosh Durgin if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 1856d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || 1857d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) 1858cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 1859cd634fb6SSage Weil 1860f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 1861f9d25199SAlex Elder __send_queued(osdc); 1862f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 18633d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 18643d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 18653d14c5d2SYehuda Sadeh return; 18663d14c5d2SYehuda Sadeh 18673d14c5d2SYehuda Sadeh bad: 18683d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 18693d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 18703d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 18713d14c5d2SYehuda Sadeh return; 18723d14c5d2SYehuda Sadeh } 18733d14c5d2SYehuda Sadeh 18743d14c5d2SYehuda Sadeh /* 1875a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 1876a40c4f10SYehuda Sadeh * 1877a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 1878a40c4f10SYehuda Sadeh */ 1879a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 1880a40c4f10SYehuda Sadeh { 1881a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 1882a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 1883a40c4f10SYehuda Sadeh 1884a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 1885a40c4f10SYehuda Sadeh kfree(event); 1886a40c4f10SYehuda Sadeh } 1887a40c4f10SYehuda Sadeh 1888a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 1889a40c4f10SYehuda Sadeh { 1890a40c4f10SYehuda Sadeh kref_get(&event->kref); 1891a40c4f10SYehuda Sadeh } 1892a40c4f10SYehuda Sadeh 1893a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 1894a40c4f10SYehuda Sadeh { 1895a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 1896a40c4f10SYehuda Sadeh } 1897a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 1898a40c4f10SYehuda Sadeh 1899a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 1900a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 1901a40c4f10SYehuda Sadeh { 1902a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1903a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1904a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1905a40c4f10SYehuda Sadeh 1906a40c4f10SYehuda Sadeh while (*p) { 1907a40c4f10SYehuda Sadeh parent = *p; 1908a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1909a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 1910a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1911a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 1912a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1913a40c4f10SYehuda Sadeh else 1914a40c4f10SYehuda Sadeh BUG(); 1915a40c4f10SYehuda Sadeh } 1916a40c4f10SYehuda Sadeh 1917a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 1918a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 1919a40c4f10SYehuda Sadeh } 1920a40c4f10SYehuda Sadeh 1921a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 1922a40c4f10SYehuda Sadeh u64 cookie) 1923a40c4f10SYehuda Sadeh { 1924a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 1925a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 1926a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 1927a40c4f10SYehuda Sadeh 1928a40c4f10SYehuda Sadeh while (*p) { 1929a40c4f10SYehuda Sadeh parent = *p; 1930a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 1931a40c4f10SYehuda Sadeh if (cookie < event->cookie) 1932a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 1933a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 1934a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 1935a40c4f10SYehuda Sadeh else 1936a40c4f10SYehuda Sadeh return event; 1937a40c4f10SYehuda Sadeh } 1938a40c4f10SYehuda Sadeh return NULL; 1939a40c4f10SYehuda Sadeh } 1940a40c4f10SYehuda Sadeh 1941a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 1942a40c4f10SYehuda Sadeh { 1943a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1944a40c4f10SYehuda Sadeh 1945a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 1946a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 1947a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 1948a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 1949a40c4f10SYehuda Sadeh } else { 1950a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 1951a40c4f10SYehuda Sadeh } 1952a40c4f10SYehuda Sadeh } 1953a40c4f10SYehuda Sadeh 1954a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 1955a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 19563c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 1957a40c4f10SYehuda Sadeh { 1958a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 1959a40c4f10SYehuda Sadeh 1960a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 1961a40c4f10SYehuda Sadeh if (!event) 1962a40c4f10SYehuda Sadeh return -ENOMEM; 1963a40c4f10SYehuda Sadeh 1964a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 1965a40c4f10SYehuda Sadeh event->cb = event_cb; 19663c663bbdSAlex Elder event->one_shot = 0; 1967a40c4f10SYehuda Sadeh event->data = data; 1968a40c4f10SYehuda Sadeh event->osdc = osdc; 1969a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 19703ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 1971a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 1972a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 1973a40c4f10SYehuda Sadeh 1974a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1975a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 1976a40c4f10SYehuda Sadeh __insert_event(osdc, event); 1977a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1978a40c4f10SYehuda Sadeh 1979a40c4f10SYehuda Sadeh *pevent = event; 1980a40c4f10SYehuda Sadeh return 0; 1981a40c4f10SYehuda Sadeh } 1982a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 1983a40c4f10SYehuda Sadeh 1984a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 1985a40c4f10SYehuda Sadeh { 1986a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 1987a40c4f10SYehuda Sadeh 1988a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 1989a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 1990a40c4f10SYehuda Sadeh __remove_event(event); 1991a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 1992a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 1993a40c4f10SYehuda Sadeh } 1994a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 1995a40c4f10SYehuda Sadeh 1996a40c4f10SYehuda Sadeh 1997a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 1998a40c4f10SYehuda Sadeh { 1999a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 2000a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 2001a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 2002a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 2003a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 2004a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 2005a40c4f10SYehuda Sadeh 2006a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 2007a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 2008a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 2009a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2010a40c4f10SYehuda Sadeh kfree(event_work); 2011a40c4f10SYehuda Sadeh } 2012a40c4f10SYehuda Sadeh 2013a40c4f10SYehuda Sadeh 2014a40c4f10SYehuda Sadeh /* 2015a40c4f10SYehuda Sadeh * Process osd watch notifications 2016a40c4f10SYehuda Sadeh */ 20173c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 20183c663bbdSAlex Elder struct ceph_msg *msg) 2019a40c4f10SYehuda Sadeh { 2020a40c4f10SYehuda Sadeh void *p, *end; 2021a40c4f10SYehuda Sadeh u8 proto_ver; 2022a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 2023a40c4f10SYehuda Sadeh u8 opcode; 2024a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2025a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 2026a40c4f10SYehuda Sadeh 2027a40c4f10SYehuda Sadeh p = msg->front.iov_base; 2028a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 2029a40c4f10SYehuda Sadeh 2030a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 2031a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 2032a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 2033a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 2034a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 2035a40c4f10SYehuda Sadeh 2036a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2037a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 2038a40c4f10SYehuda Sadeh if (event) { 20393c663bbdSAlex Elder BUG_ON(event->one_shot); 2040a40c4f10SYehuda Sadeh get_event(event); 2041a40c4f10SYehuda Sadeh } 2042a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2043a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 2044a40c4f10SYehuda Sadeh cookie, ver, event); 2045a40c4f10SYehuda Sadeh if (event) { 2046a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 2047a40c4f10SYehuda Sadeh if (!event_work) { 2048a40c4f10SYehuda Sadeh dout("ERROR: could not allocate event_work\n"); 2049a40c4f10SYehuda Sadeh goto done_err; 2050a40c4f10SYehuda Sadeh } 20516b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 2052a40c4f10SYehuda Sadeh event_work->event = event; 2053a40c4f10SYehuda Sadeh event_work->ver = ver; 2054a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 2055a40c4f10SYehuda Sadeh event_work->opcode = opcode; 2056a40c4f10SYehuda Sadeh if (!queue_work(osdc->notify_wq, &event_work->work)) { 2057a40c4f10SYehuda Sadeh dout("WARNING: failed to queue notify event work\n"); 2058a40c4f10SYehuda Sadeh goto done_err; 2059a40c4f10SYehuda Sadeh } 2060a40c4f10SYehuda Sadeh } 2061a40c4f10SYehuda Sadeh 2062a40c4f10SYehuda Sadeh return; 2063a40c4f10SYehuda Sadeh 2064a40c4f10SYehuda Sadeh done_err: 2065a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2066a40c4f10SYehuda Sadeh return; 2067a40c4f10SYehuda Sadeh 2068a40c4f10SYehuda Sadeh bad: 2069a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 2070a40c4f10SYehuda Sadeh return; 2071a40c4f10SYehuda Sadeh } 2072a40c4f10SYehuda Sadeh 2073a40c4f10SYehuda Sadeh /* 2074e65550fdSAlex Elder * build new request AND message 2075e65550fdSAlex Elder * 2076e65550fdSAlex Elder */ 2077e65550fdSAlex Elder void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, 2078e65550fdSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 2079e65550fdSAlex Elder struct timespec *mtime) 2080e65550fdSAlex Elder { 2081e65550fdSAlex Elder struct ceph_msg *msg = req->r_request; 2082e65550fdSAlex Elder void *p; 2083e65550fdSAlex Elder size_t msg_size; 2084e65550fdSAlex Elder int flags = req->r_flags; 2085e65550fdSAlex Elder u64 data_len; 2086e65550fdSAlex Elder unsigned int i; 2087e65550fdSAlex Elder 2088e65550fdSAlex Elder req->r_snapid = snap_id; 2089e65550fdSAlex Elder req->r_snapc = ceph_get_snap_context(snapc); 2090e65550fdSAlex Elder 2091e65550fdSAlex Elder /* encode request */ 2092e65550fdSAlex Elder msg->hdr.version = cpu_to_le16(4); 2093e65550fdSAlex Elder 2094e65550fdSAlex Elder p = msg->front.iov_base; 2095e65550fdSAlex Elder ceph_encode_32(&p, 1); /* client_inc is always 1 */ 2096e65550fdSAlex Elder req->r_request_osdmap_epoch = p; 2097e65550fdSAlex Elder p += 4; 2098e65550fdSAlex Elder req->r_request_flags = p; 2099e65550fdSAlex Elder p += 4; 2100e65550fdSAlex Elder if (req->r_flags & CEPH_OSD_FLAG_WRITE) 2101e65550fdSAlex Elder ceph_encode_timespec(p, mtime); 2102e65550fdSAlex Elder p += sizeof(struct ceph_timespec); 2103e65550fdSAlex Elder req->r_request_reassert_version = p; 2104e65550fdSAlex Elder p += sizeof(struct ceph_eversion); /* will get filled in */ 2105e65550fdSAlex Elder 2106e65550fdSAlex Elder /* oloc */ 2107e65550fdSAlex Elder ceph_encode_8(&p, 4); 2108e65550fdSAlex Elder ceph_encode_8(&p, 4); 2109e65550fdSAlex Elder ceph_encode_32(&p, 8 + 4 + 4); 2110e65550fdSAlex Elder req->r_request_pool = p; 2111e65550fdSAlex Elder p += 8; 2112e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2113e65550fdSAlex Elder ceph_encode_32(&p, 0); /* key len */ 2114e65550fdSAlex Elder 2115e65550fdSAlex Elder ceph_encode_8(&p, 1); 2116e65550fdSAlex Elder req->r_request_pgid = p; 2117e65550fdSAlex Elder p += 8 + 4; 2118e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2119e65550fdSAlex Elder 2120e65550fdSAlex Elder /* oid */ 21214295f221SIlya Dryomov ceph_encode_32(&p, req->r_oid.name_len); 21224295f221SIlya Dryomov memcpy(p, req->r_oid.name, req->r_oid.name_len); 21234295f221SIlya Dryomov dout("oid '%.*s' len %d\n", req->r_oid.name_len, 21244295f221SIlya Dryomov req->r_oid.name, req->r_oid.name_len); 21254295f221SIlya Dryomov p += req->r_oid.name_len; 2126e65550fdSAlex Elder 2127e65550fdSAlex Elder /* ops--can imply data */ 2128e65550fdSAlex Elder ceph_encode_16(&p, (u16)req->r_num_ops); 2129e65550fdSAlex Elder data_len = 0; 2130e65550fdSAlex Elder for (i = 0; i < req->r_num_ops; i++) { 2131e65550fdSAlex Elder data_len += osd_req_encode_op(req, p, i); 2132e65550fdSAlex Elder p += sizeof(struct ceph_osd_op); 2133e65550fdSAlex Elder } 2134e65550fdSAlex Elder 2135e65550fdSAlex Elder /* snaps */ 2136e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapid); 2137e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 2138e65550fdSAlex Elder ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 2139e65550fdSAlex Elder if (req->r_snapc) { 2140e65550fdSAlex Elder for (i = 0; i < snapc->num_snaps; i++) { 2141e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc->snaps[i]); 2142e65550fdSAlex Elder } 2143e65550fdSAlex Elder } 2144e65550fdSAlex Elder 2145e65550fdSAlex Elder req->r_request_attempts = p; 2146e65550fdSAlex Elder p += 4; 2147e65550fdSAlex Elder 2148e65550fdSAlex Elder /* data */ 2149e65550fdSAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 2150e65550fdSAlex Elder u16 data_off; 2151e65550fdSAlex Elder 2152e65550fdSAlex Elder /* 2153e65550fdSAlex Elder * The header "data_off" is a hint to the receiver 2154e65550fdSAlex Elder * allowing it to align received data into its 2155e65550fdSAlex Elder * buffers such that there's no need to re-copy 2156e65550fdSAlex Elder * it before writing it to disk (direct I/O). 2157e65550fdSAlex Elder */ 2158e65550fdSAlex Elder data_off = (u16) (off & 0xffff); 2159e65550fdSAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 2160e65550fdSAlex Elder } 2161e65550fdSAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 2162e65550fdSAlex Elder 2163e65550fdSAlex Elder BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 2164e65550fdSAlex Elder msg_size = p - msg->front.iov_base; 2165e65550fdSAlex Elder msg->front.iov_len = msg_size; 2166e65550fdSAlex Elder msg->hdr.front_len = cpu_to_le32(msg_size); 2167e65550fdSAlex Elder 2168e65550fdSAlex Elder dout("build_request msg_size was %d\n", (int)msg_size); 2169e65550fdSAlex Elder } 2170e65550fdSAlex Elder EXPORT_SYMBOL(ceph_osdc_build_request); 2171e65550fdSAlex Elder 2172e65550fdSAlex Elder /* 21733d14c5d2SYehuda Sadeh * Register request, send initial attempt. 21743d14c5d2SYehuda Sadeh */ 21753d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 21763d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 21773d14c5d2SYehuda Sadeh bool nofail) 21783d14c5d2SYehuda Sadeh { 21793d14c5d2SYehuda Sadeh int rc = 0; 21803d14c5d2SYehuda Sadeh 21813d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 21823d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 2183dc4b870cSAlex Elder __register_request(osdc, req); 2184c10ebbf5SAlex Elder req->r_sent = 0; 2185c10ebbf5SAlex Elder req->r_got_reply = 0; 218638d6453cSSage Weil rc = __map_request(osdc, req, 0); 21879d6fcb08SSage Weil if (rc < 0) { 21889d6fcb08SSage Weil if (nofail) { 21899d6fcb08SSage Weil dout("osdc_start_request failed map, " 21909d6fcb08SSage Weil " will retry %lld\n", req->r_tid); 21919d6fcb08SSage Weil rc = 0; 219273d9f7eeSmajianpeng } else { 219373d9f7eeSmajianpeng __unregister_request(osdc, req); 21949d6fcb08SSage Weil } 2195234af26fSDan Carpenter goto out_unlock; 21969d6fcb08SSage Weil } 21976f6c7006SSage Weil if (req->r_osd == NULL) { 21986f6c7006SSage Weil dout("send_request %p no up osds in pg\n", req); 21996f6c7006SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 22006f6c7006SSage Weil } else { 22017e2766a1SAlex Elder __send_queued(osdc); 220256e925b6SSage Weil } 22033d14c5d2SYehuda Sadeh rc = 0; 2204234af26fSDan Carpenter out_unlock: 22053d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 22063d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 22073d14c5d2SYehuda Sadeh return rc; 22083d14c5d2SYehuda Sadeh } 22093d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 22103d14c5d2SYehuda Sadeh 22113d14c5d2SYehuda Sadeh /* 22123d14c5d2SYehuda Sadeh * wait for a request to complete 22133d14c5d2SYehuda Sadeh */ 22143d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 22153d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 22163d14c5d2SYehuda Sadeh { 22173d14c5d2SYehuda Sadeh int rc; 22183d14c5d2SYehuda Sadeh 22193d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 22203d14c5d2SYehuda Sadeh if (rc < 0) { 22213d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 22223d14c5d2SYehuda Sadeh __cancel_request(req); 22233d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 22243d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 222525845472SSage Weil complete_request(req); 22263d14c5d2SYehuda Sadeh dout("wait_request tid %llu canceled/timed out\n", req->r_tid); 22273d14c5d2SYehuda Sadeh return rc; 22283d14c5d2SYehuda Sadeh } 22293d14c5d2SYehuda Sadeh 22303d14c5d2SYehuda Sadeh dout("wait_request tid %llu result %d\n", req->r_tid, req->r_result); 22313d14c5d2SYehuda Sadeh return req->r_result; 22323d14c5d2SYehuda Sadeh } 22333d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 22343d14c5d2SYehuda Sadeh 22353d14c5d2SYehuda Sadeh /* 22363d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 22373d14c5d2SYehuda Sadeh */ 22383d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 22393d14c5d2SYehuda Sadeh { 22403d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 22413d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 22423d14c5d2SYehuda Sadeh 22433d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 22443d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 22453d14c5d2SYehuda Sadeh while (1) { 22463d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 22473d14c5d2SYehuda Sadeh if (!req) 22483d14c5d2SYehuda Sadeh break; 22493d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 22503d14c5d2SYehuda Sadeh break; 22513d14c5d2SYehuda Sadeh 22523d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 22533d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 22543d14c5d2SYehuda Sadeh continue; 22553d14c5d2SYehuda Sadeh 22563d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 22573d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 22583d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 22593d14c5d2SYehuda Sadeh req->r_tid, last_tid); 22603d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 22613d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 22623d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 22633d14c5d2SYehuda Sadeh } 22643d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 22653d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 22663d14c5d2SYehuda Sadeh } 22673d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 22683d14c5d2SYehuda Sadeh 22693d14c5d2SYehuda Sadeh /* 2270dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 2271dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 2272dd935f44SJosh Durgin */ 2273dd935f44SJosh Durgin extern void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 2274dd935f44SJosh Durgin { 2275dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 2276dd935f44SJosh Durgin } 2277dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 2278dd935f44SJosh Durgin 2279dd935f44SJosh Durgin 2280dd935f44SJosh Durgin /* 22813d14c5d2SYehuda Sadeh * init, shutdown 22823d14c5d2SYehuda Sadeh */ 22833d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 22843d14c5d2SYehuda Sadeh { 22853d14c5d2SYehuda Sadeh int err; 22863d14c5d2SYehuda Sadeh 22873d14c5d2SYehuda Sadeh dout("init\n"); 22883d14c5d2SYehuda Sadeh osdc->client = client; 22893d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 22903d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 22913d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 22923d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 22933d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 22943d14c5d2SYehuda Sadeh osdc->last_tid = 0; 22953d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 22963d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 22973d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 22983d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 22996f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 23006f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 2301a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 23023d14c5d2SYehuda Sadeh osdc->num_requests = 0; 23033d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 23043d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2305a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 2306a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 2307a40c4f10SYehuda Sadeh osdc->event_count = 0; 23083d14c5d2SYehuda Sadeh 23093d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 23103d14c5d2SYehuda Sadeh round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); 23113d14c5d2SYehuda Sadeh 23123d14c5d2SYehuda Sadeh err = -ENOMEM; 23133d14c5d2SYehuda Sadeh osdc->req_mempool = mempool_create_kmalloc_pool(10, 23143d14c5d2SYehuda Sadeh sizeof(struct ceph_osd_request)); 23153d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 23163d14c5d2SYehuda Sadeh goto out; 23173d14c5d2SYehuda Sadeh 2318d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2319d50b409fSSage Weil OSD_OP_FRONT_LEN, 10, true, 23203d14c5d2SYehuda Sadeh "osd_op"); 23213d14c5d2SYehuda Sadeh if (err < 0) 23223d14c5d2SYehuda Sadeh goto out_mempool; 2323d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 23243d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, 10, true, 23253d14c5d2SYehuda Sadeh "osd_op_reply"); 23263d14c5d2SYehuda Sadeh if (err < 0) 23273d14c5d2SYehuda Sadeh goto out_msgpool; 2328a40c4f10SYehuda Sadeh 2329dbcae088SDan Carpenter err = -ENOMEM; 2330a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2331dbcae088SDan Carpenter if (!osdc->notify_wq) 2332a40c4f10SYehuda Sadeh goto out_msgpool; 23333d14c5d2SYehuda Sadeh return 0; 23343d14c5d2SYehuda Sadeh 23353d14c5d2SYehuda Sadeh out_msgpool: 23363d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 23373d14c5d2SYehuda Sadeh out_mempool: 23383d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 23393d14c5d2SYehuda Sadeh out: 23403d14c5d2SYehuda Sadeh return err; 23413d14c5d2SYehuda Sadeh } 23423d14c5d2SYehuda Sadeh 23433d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 23443d14c5d2SYehuda Sadeh { 2345a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2346a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 23473d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 23483d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 23493d14c5d2SYehuda Sadeh if (osdc->osdmap) { 23503d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 23513d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 23523d14c5d2SYehuda Sadeh } 2353aca420bcSSage Weil remove_all_osds(osdc); 23543d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 23553d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 23563d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 23573d14c5d2SYehuda Sadeh } 23583d14c5d2SYehuda Sadeh 23593d14c5d2SYehuda Sadeh /* 23603d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 23613d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 23623d14c5d2SYehuda Sadeh */ 23633d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 23643d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 23653d14c5d2SYehuda Sadeh u64 off, u64 *plen, 23663d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2367b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 23683d14c5d2SYehuda Sadeh { 23693d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 23703d14c5d2SYehuda Sadeh int rc = 0; 23713d14c5d2SYehuda Sadeh 23723d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 23733d14c5d2SYehuda Sadeh vino.snap, off, *plen); 237479528734SAlex Elder req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 1, 23753d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 2376acead002SAlex Elder NULL, truncate_seq, truncate_size, 2377153e5167SAlex Elder false); 23786816282dSSage Weil if (IS_ERR(req)) 23796816282dSSage Weil return PTR_ERR(req); 23803d14c5d2SYehuda Sadeh 23813d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 23820fff87ecSAlex Elder 2383406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 2384a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 23853d14c5d2SYehuda Sadeh 2386e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 238743bfe5deSAlex Elder off, *plen, *plen, page_align); 23883d14c5d2SYehuda Sadeh 238979528734SAlex Elder ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); 239002ee07d3SAlex Elder 23913d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 23923d14c5d2SYehuda Sadeh if (!rc) 23933d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 23943d14c5d2SYehuda Sadeh 23953d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 23963d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 23973d14c5d2SYehuda Sadeh return rc; 23983d14c5d2SYehuda Sadeh } 23993d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 24003d14c5d2SYehuda Sadeh 24013d14c5d2SYehuda Sadeh /* 24023d14c5d2SYehuda Sadeh * do a synchronous write on N pages 24033d14c5d2SYehuda Sadeh */ 24043d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 24053d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 24063d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 24073d14c5d2SYehuda Sadeh u64 off, u64 len, 24083d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 24093d14c5d2SYehuda Sadeh struct timespec *mtime, 241024808826SAlex Elder struct page **pages, int num_pages) 24113d14c5d2SYehuda Sadeh { 24123d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 24133d14c5d2SYehuda Sadeh int rc = 0; 2414b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 24153d14c5d2SYehuda Sadeh 2416acead002SAlex Elder BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ 241779528734SAlex Elder req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 1, 24183d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 241924808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2420acead002SAlex Elder snapc, truncate_seq, truncate_size, 2421153e5167SAlex Elder true); 24226816282dSSage Weil if (IS_ERR(req)) 24236816282dSSage Weil return PTR_ERR(req); 24243d14c5d2SYehuda Sadeh 24253d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 2426406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 242743bfe5deSAlex Elder false, false); 242843bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 24293d14c5d2SYehuda Sadeh 243079528734SAlex Elder ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); 243102ee07d3SAlex Elder 243287f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 24333d14c5d2SYehuda Sadeh if (!rc) 24343d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 24353d14c5d2SYehuda Sadeh 24363d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 24373d14c5d2SYehuda Sadeh if (rc == 0) 24383d14c5d2SYehuda Sadeh rc = len; 24393d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 24403d14c5d2SYehuda Sadeh return rc; 24413d14c5d2SYehuda Sadeh } 24423d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 24433d14c5d2SYehuda Sadeh 24445522ae0bSAlex Elder int ceph_osdc_setup(void) 24455522ae0bSAlex Elder { 24465522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 24475522ae0bSAlex Elder ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", 24485522ae0bSAlex Elder sizeof (struct ceph_osd_request), 24495522ae0bSAlex Elder __alignof__(struct ceph_osd_request), 24505522ae0bSAlex Elder 0, NULL); 24515522ae0bSAlex Elder 24525522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 24535522ae0bSAlex Elder } 24545522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 24555522ae0bSAlex Elder 24565522ae0bSAlex Elder void ceph_osdc_cleanup(void) 24575522ae0bSAlex Elder { 24585522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 24595522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 24605522ae0bSAlex Elder ceph_osd_request_cache = NULL; 24615522ae0bSAlex Elder } 24625522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 24635522ae0bSAlex Elder 24643d14c5d2SYehuda Sadeh /* 24653d14c5d2SYehuda Sadeh * handle incoming message 24663d14c5d2SYehuda Sadeh */ 24673d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 24683d14c5d2SYehuda Sadeh { 24693d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 24703d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 24713d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 24723d14c5d2SYehuda Sadeh 24733d14c5d2SYehuda Sadeh if (!osd) 24743d14c5d2SYehuda Sadeh goto out; 24753d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 24763d14c5d2SYehuda Sadeh 24773d14c5d2SYehuda Sadeh switch (type) { 24783d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 24793d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 24803d14c5d2SYehuda Sadeh break; 24813d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 24823d14c5d2SYehuda Sadeh handle_reply(osdc, msg, con); 24833d14c5d2SYehuda Sadeh break; 2484a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2485a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2486a40c4f10SYehuda Sadeh break; 24873d14c5d2SYehuda Sadeh 24883d14c5d2SYehuda Sadeh default: 24893d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 24903d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 24913d14c5d2SYehuda Sadeh } 24923d14c5d2SYehuda Sadeh out: 24933d14c5d2SYehuda Sadeh ceph_msg_put(msg); 24943d14c5d2SYehuda Sadeh } 24953d14c5d2SYehuda Sadeh 24963d14c5d2SYehuda Sadeh /* 24973d14c5d2SYehuda Sadeh * lookup and return message for incoming reply. set up reply message 24983d14c5d2SYehuda Sadeh * pages. 24993d14c5d2SYehuda Sadeh */ 25003d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 25013d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 25023d14c5d2SYehuda Sadeh int *skip) 25033d14c5d2SYehuda Sadeh { 25043d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 25053d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 25063d14c5d2SYehuda Sadeh struct ceph_msg *m; 25073d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 25083f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 25093d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 25103d14c5d2SYehuda Sadeh u64 tid; 25113d14c5d2SYehuda Sadeh 25123d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 25133d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 25143d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 25153d14c5d2SYehuda Sadeh if (!req) { 25163d14c5d2SYehuda Sadeh *skip = 1; 25173d14c5d2SYehuda Sadeh m = NULL; 2518756a16a5SSage Weil dout("get_reply unknown tid %llu from osd%d\n", tid, 25193d14c5d2SYehuda Sadeh osd->o_osd); 25203d14c5d2SYehuda Sadeh goto out; 25213d14c5d2SYehuda Sadeh } 25223d14c5d2SYehuda Sadeh 2523ace6d3a9SAlex Elder if (req->r_reply->con) 25248921d114SAlex Elder dout("%s revoking msg %p from old con %p\n", __func__, 2525ace6d3a9SAlex Elder req->r_reply, req->r_reply->con); 25268921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 25273d14c5d2SYehuda Sadeh 2528f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 25294974341eSAlex Elder pr_warning("get_reply front %d > preallocated %d (%u#%llu)\n", 2530f2be82b0SIlya Dryomov front_len, req->r_reply->front_alloc_len, 25314974341eSAlex Elder (unsigned int)con->peer_name.type, 25324974341eSAlex Elder le64_to_cpu(con->peer_name.num)); 25333f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 25343f0a4ac5SIlya Dryomov false); 25353d14c5d2SYehuda Sadeh if (!m) 25363d14c5d2SYehuda Sadeh goto out; 25373d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 25383d14c5d2SYehuda Sadeh req->r_reply = m; 25393d14c5d2SYehuda Sadeh } 25403d14c5d2SYehuda Sadeh m = ceph_msg_get(req->r_reply); 25413d14c5d2SYehuda Sadeh 25423d14c5d2SYehuda Sadeh if (data_len > 0) { 2543a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 25440fff87ecSAlex Elder 2545a4ce40a9SAlex Elder /* 2546a4ce40a9SAlex Elder * XXX This is assuming there is only one op containing 2547a4ce40a9SAlex Elder * XXX page data. Probably OK for reads, but this 2548a4ce40a9SAlex Elder * XXX ought to be done more generally. 2549a4ce40a9SAlex Elder */ 2550406e2c9fSAlex Elder osd_data = osd_req_op_extent_osd_data(req, 0); 25510fff87ecSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 25520fff87ecSAlex Elder if (osd_data->pages && 2553e0c59487SAlex Elder unlikely(osd_data->length < data_len)) { 25542ac2b7a6SAlex Elder 2555e0c59487SAlex Elder pr_warning("tid %lld reply has %d bytes " 2556e0c59487SAlex Elder "we had only %llu bytes ready\n", 2557e0c59487SAlex Elder tid, data_len, osd_data->length); 25583d14c5d2SYehuda Sadeh *skip = 1; 25593d14c5d2SYehuda Sadeh ceph_msg_put(m); 25603d14c5d2SYehuda Sadeh m = NULL; 25613d14c5d2SYehuda Sadeh goto out; 25623d14c5d2SYehuda Sadeh } 25633d14c5d2SYehuda Sadeh } 25642ac2b7a6SAlex Elder } 25653d14c5d2SYehuda Sadeh *skip = 0; 25663d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 25673d14c5d2SYehuda Sadeh 25683d14c5d2SYehuda Sadeh out: 25693d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 25703d14c5d2SYehuda Sadeh return m; 25713d14c5d2SYehuda Sadeh 25723d14c5d2SYehuda Sadeh } 25733d14c5d2SYehuda Sadeh 25743d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 25753d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 25763d14c5d2SYehuda Sadeh int *skip) 25773d14c5d2SYehuda Sadeh { 25783d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 25793d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 25803d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 25813d14c5d2SYehuda Sadeh 25821c20f2d2SAlex Elder *skip = 0; 25833d14c5d2SYehuda Sadeh switch (type) { 25843d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2585a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2586b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 25873d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 25883d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 25893d14c5d2SYehuda Sadeh default: 25903d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 25913d14c5d2SYehuda Sadeh osd->o_osd); 25923d14c5d2SYehuda Sadeh *skip = 1; 25933d14c5d2SYehuda Sadeh return NULL; 25943d14c5d2SYehuda Sadeh } 25953d14c5d2SYehuda Sadeh } 25963d14c5d2SYehuda Sadeh 25973d14c5d2SYehuda Sadeh /* 25983d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 25993d14c5d2SYehuda Sadeh */ 26003d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 26013d14c5d2SYehuda Sadeh { 26023d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 26033d14c5d2SYehuda Sadeh if (get_osd(osd)) 26043d14c5d2SYehuda Sadeh return con; 26053d14c5d2SYehuda Sadeh return NULL; 26063d14c5d2SYehuda Sadeh } 26073d14c5d2SYehuda Sadeh 26083d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 26093d14c5d2SYehuda Sadeh { 26103d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 26113d14c5d2SYehuda Sadeh put_osd(osd); 26123d14c5d2SYehuda Sadeh } 26133d14c5d2SYehuda Sadeh 26143d14c5d2SYehuda Sadeh /* 26153d14c5d2SYehuda Sadeh * authentication 26163d14c5d2SYehuda Sadeh */ 2617a3530df3SAlex Elder /* 2618a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2619a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2620a3530df3SAlex Elder */ 2621a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 26228f43fb53SAlex Elder int *proto, int force_new) 26233d14c5d2SYehuda Sadeh { 26243d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 26253d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 26263d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 262774f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 26283d14c5d2SYehuda Sadeh 262974f1869fSAlex Elder if (force_new && auth->authorizer) { 263027859f97SSage Weil ceph_auth_destroy_authorizer(ac, auth->authorizer); 263174f1869fSAlex Elder auth->authorizer = NULL; 26323d14c5d2SYehuda Sadeh } 263327859f97SSage Weil if (!auth->authorizer) { 263427859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2635a3530df3SAlex Elder auth); 26363d14c5d2SYehuda Sadeh if (ret) 2637a3530df3SAlex Elder return ERR_PTR(ret); 263827859f97SSage Weil } else { 263927859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 26400bed9b5cSSage Weil auth); 26410bed9b5cSSage Weil if (ret) 26420bed9b5cSSage Weil return ERR_PTR(ret); 26433d14c5d2SYehuda Sadeh } 26443d14c5d2SYehuda Sadeh *proto = ac->protocol; 264574f1869fSAlex Elder 2646a3530df3SAlex Elder return auth; 26473d14c5d2SYehuda Sadeh } 26483d14c5d2SYehuda Sadeh 26493d14c5d2SYehuda Sadeh 26503d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 26513d14c5d2SYehuda Sadeh { 26523d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 26533d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 26543d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 26553d14c5d2SYehuda Sadeh 265627859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 26573d14c5d2SYehuda Sadeh } 26583d14c5d2SYehuda Sadeh 26593d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 26603d14c5d2SYehuda Sadeh { 26613d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 26623d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 26633d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 26643d14c5d2SYehuda Sadeh 266527859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 26663d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 26673d14c5d2SYehuda Sadeh } 26683d14c5d2SYehuda Sadeh 26693d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 26703d14c5d2SYehuda Sadeh .get = get_osd_con, 26713d14c5d2SYehuda Sadeh .put = put_osd_con, 26723d14c5d2SYehuda Sadeh .dispatch = dispatch, 26733d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 26743d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 26753d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 26763d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 26773d14c5d2SYehuda Sadeh .fault = osd_reset, 26783d14c5d2SYehuda Sadeh }; 2679