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); 332cc6128aSIlya Dryomov static void __unregister_request(struct ceph_osd_client *osdc, 342cc6128aSIlya Dryomov struct ceph_osd_request *req); 35a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 36a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 372cc6128aSIlya Dryomov static void __enqueue_request(struct ceph_osd_request *req); 3856e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 39a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 403d14c5d2SYehuda Sadeh 413d14c5d2SYehuda Sadeh /* 423d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 433d14c5d2SYehuda Sadeh * 443d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 453d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 463d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 473d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 483d14c5d2SYehuda Sadeh * access to storage. 493d14c5d2SYehuda Sadeh * 503d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 513d14c5d2SYehuda Sadeh * are described by the osd map. 523d14c5d2SYehuda Sadeh * 533d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 543d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 553d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 563d14c5d2SYehuda Sadeh * channel with an OSD is reset. 573d14c5d2SYehuda Sadeh */ 583d14c5d2SYehuda Sadeh 593d14c5d2SYehuda Sadeh /* 603d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 613d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 623d14c5d2SYehuda Sadeh * object boundary. 633d14c5d2SYehuda Sadeh * 643d14c5d2SYehuda Sadeh * fill osd op in request message. 653d14c5d2SYehuda Sadeh */ 66dbe0fc41SAlex Elder static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 67a19dadfbSAlex Elder u64 *objnum, u64 *objoff, u64 *objlen) 683d14c5d2SYehuda Sadeh { 6960e56f13SAlex Elder u64 orig_len = *plen; 70d63b77f4SSage Weil int r; 713d14c5d2SYehuda Sadeh 7260e56f13SAlex Elder /* object extent? */ 7375d1c941SAlex Elder r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, 7475d1c941SAlex Elder objoff, objlen); 75d63b77f4SSage Weil if (r < 0) 76d63b77f4SSage Weil return r; 7775d1c941SAlex Elder if (*objlen < orig_len) { 7875d1c941SAlex Elder *plen = *objlen; 7960e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 8060e56f13SAlex Elder orig_len - *plen, off, *plen); 8160e56f13SAlex Elder } 8260e56f13SAlex Elder 8375d1c941SAlex Elder dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); 843d14c5d2SYehuda Sadeh 853ff5f385SAlex Elder return 0; 863d14c5d2SYehuda Sadeh } 873d14c5d2SYehuda Sadeh 88c54d47bfSAlex Elder static void ceph_osd_data_init(struct ceph_osd_data *osd_data) 89c54d47bfSAlex Elder { 90c54d47bfSAlex Elder memset(osd_data, 0, sizeof (*osd_data)); 91c54d47bfSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_NONE; 92c54d47bfSAlex Elder } 93c54d47bfSAlex Elder 94a4ce40a9SAlex Elder static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, 9543bfe5deSAlex Elder struct page **pages, u64 length, u32 alignment, 9643bfe5deSAlex Elder bool pages_from_pool, bool own_pages) 9743bfe5deSAlex Elder { 9843bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 9943bfe5deSAlex Elder osd_data->pages = pages; 10043bfe5deSAlex Elder osd_data->length = length; 10143bfe5deSAlex Elder osd_data->alignment = alignment; 10243bfe5deSAlex Elder osd_data->pages_from_pool = pages_from_pool; 10343bfe5deSAlex Elder osd_data->own_pages = own_pages; 10443bfe5deSAlex Elder } 10543bfe5deSAlex Elder 106a4ce40a9SAlex Elder static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, 10743bfe5deSAlex Elder struct ceph_pagelist *pagelist) 10843bfe5deSAlex Elder { 10943bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; 11043bfe5deSAlex Elder osd_data->pagelist = pagelist; 11143bfe5deSAlex Elder } 11243bfe5deSAlex Elder 11343bfe5deSAlex Elder #ifdef CONFIG_BLOCK 114a4ce40a9SAlex Elder static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, 11543bfe5deSAlex Elder struct bio *bio, size_t bio_length) 11643bfe5deSAlex Elder { 11743bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_BIO; 11843bfe5deSAlex Elder osd_data->bio = bio; 11943bfe5deSAlex Elder osd_data->bio_length = bio_length; 12043bfe5deSAlex Elder } 12143bfe5deSAlex Elder #endif /* CONFIG_BLOCK */ 12243bfe5deSAlex Elder 123863c7eb5SAlex Elder #define osd_req_op_data(oreq, whch, typ, fld) \ 124863c7eb5SAlex Elder ({ \ 125863c7eb5SAlex Elder BUG_ON(whch >= (oreq)->r_num_ops); \ 126863c7eb5SAlex Elder &(oreq)->r_ops[whch].typ.fld; \ 127863c7eb5SAlex Elder }) 128863c7eb5SAlex Elder 12949719778SAlex Elder static struct ceph_osd_data * 13049719778SAlex Elder osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) 13149719778SAlex Elder { 13249719778SAlex Elder BUG_ON(which >= osd_req->r_num_ops); 13349719778SAlex Elder 13449719778SAlex Elder return &osd_req->r_ops[which].raw_data_in; 13549719778SAlex Elder } 13649719778SAlex Elder 137a4ce40a9SAlex Elder struct ceph_osd_data * 138a4ce40a9SAlex Elder osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, 139406e2c9fSAlex Elder unsigned int which) 140a4ce40a9SAlex Elder { 141863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, extent, osd_data); 142a4ce40a9SAlex Elder } 143a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data); 144a4ce40a9SAlex Elder 145a4ce40a9SAlex Elder struct ceph_osd_data * 146a4ce40a9SAlex Elder osd_req_op_cls_response_data(struct ceph_osd_request *osd_req, 147a4ce40a9SAlex Elder unsigned int which) 148a4ce40a9SAlex Elder { 149863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, cls, response_data); 150a4ce40a9SAlex Elder } 151a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data); /* ??? */ 152a4ce40a9SAlex Elder 15349719778SAlex Elder void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, 15449719778SAlex Elder unsigned int which, struct page **pages, 15549719778SAlex Elder u64 length, u32 alignment, 15649719778SAlex Elder bool pages_from_pool, bool own_pages) 15749719778SAlex Elder { 15849719778SAlex Elder struct ceph_osd_data *osd_data; 15949719778SAlex Elder 16049719778SAlex Elder osd_data = osd_req_op_raw_data_in(osd_req, which); 16149719778SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 16249719778SAlex Elder pages_from_pool, own_pages); 16349719778SAlex Elder } 16449719778SAlex Elder EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); 16549719778SAlex Elder 166a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, 167406e2c9fSAlex Elder unsigned int which, struct page **pages, 168406e2c9fSAlex Elder u64 length, u32 alignment, 169a4ce40a9SAlex Elder bool pages_from_pool, bool own_pages) 170a4ce40a9SAlex Elder { 171a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 172a4ce40a9SAlex Elder 173863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 174a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 175a4ce40a9SAlex Elder pages_from_pool, own_pages); 176a4ce40a9SAlex Elder } 177a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); 178a4ce40a9SAlex Elder 179a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, 180406e2c9fSAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 181a4ce40a9SAlex Elder { 182a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 183a4ce40a9SAlex Elder 184863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 185a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 186a4ce40a9SAlex Elder } 187a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); 188a4ce40a9SAlex Elder 189a4ce40a9SAlex Elder #ifdef CONFIG_BLOCK 190a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, 191406e2c9fSAlex Elder unsigned int which, struct bio *bio, size_t bio_length) 192a4ce40a9SAlex Elder { 193a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 194863c7eb5SAlex Elder 195863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 196a4ce40a9SAlex Elder ceph_osd_data_bio_init(osd_data, bio, bio_length); 197a4ce40a9SAlex Elder } 198a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); 199a4ce40a9SAlex Elder #endif /* CONFIG_BLOCK */ 200a4ce40a9SAlex Elder 201a4ce40a9SAlex Elder static void osd_req_op_cls_request_info_pagelist( 202a4ce40a9SAlex Elder struct ceph_osd_request *osd_req, 203a4ce40a9SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 204a4ce40a9SAlex Elder { 205a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 206a4ce40a9SAlex Elder 207863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_info); 208a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 209a4ce40a9SAlex Elder } 210a4ce40a9SAlex Elder 21104017e29SAlex Elder void osd_req_op_cls_request_data_pagelist( 21204017e29SAlex Elder struct ceph_osd_request *osd_req, 21304017e29SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 21404017e29SAlex Elder { 21504017e29SAlex Elder struct ceph_osd_data *osd_data; 21604017e29SAlex Elder 217863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 21804017e29SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 21904017e29SAlex Elder } 22004017e29SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); 22104017e29SAlex Elder 2226c57b554SAlex Elder void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, 2236c57b554SAlex Elder unsigned int which, struct page **pages, u64 length, 2246c57b554SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 2256c57b554SAlex Elder { 2266c57b554SAlex Elder struct ceph_osd_data *osd_data; 2276c57b554SAlex Elder 2286c57b554SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 2296c57b554SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 2306c57b554SAlex Elder pages_from_pool, own_pages); 2316c57b554SAlex Elder } 2326c57b554SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); 2336c57b554SAlex Elder 234a4ce40a9SAlex Elder void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, 235a4ce40a9SAlex Elder unsigned int which, struct page **pages, u64 length, 236a4ce40a9SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 237a4ce40a9SAlex Elder { 238a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 239a4ce40a9SAlex Elder 240863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, response_data); 241a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 242a4ce40a9SAlex Elder pages_from_pool, own_pages); 243a4ce40a9SAlex Elder } 244a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); 245a4ce40a9SAlex Elder 24623c08a9cSAlex Elder static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) 24723c08a9cSAlex Elder { 24823c08a9cSAlex Elder switch (osd_data->type) { 24923c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_NONE: 25023c08a9cSAlex Elder return 0; 25123c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGES: 25223c08a9cSAlex Elder return osd_data->length; 25323c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGELIST: 25423c08a9cSAlex Elder return (u64)osd_data->pagelist->length; 25523c08a9cSAlex Elder #ifdef CONFIG_BLOCK 25623c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_BIO: 25723c08a9cSAlex Elder return (u64)osd_data->bio_length; 25823c08a9cSAlex Elder #endif /* CONFIG_BLOCK */ 25923c08a9cSAlex Elder default: 26023c08a9cSAlex Elder WARN(true, "unrecognized data type %d\n", (int)osd_data->type); 26123c08a9cSAlex Elder return 0; 26223c08a9cSAlex Elder } 26323c08a9cSAlex Elder } 26423c08a9cSAlex Elder 265c54d47bfSAlex Elder static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 266c54d47bfSAlex Elder { 2675476492fSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { 268c54d47bfSAlex Elder int num_pages; 269c54d47bfSAlex Elder 270c54d47bfSAlex Elder num_pages = calc_pages_for((u64)osd_data->alignment, 271c54d47bfSAlex Elder (u64)osd_data->length); 272c54d47bfSAlex Elder ceph_release_page_vector(osd_data->pages, num_pages); 273c54d47bfSAlex Elder } 2745476492fSAlex Elder ceph_osd_data_init(osd_data); 2755476492fSAlex Elder } 2765476492fSAlex Elder 2775476492fSAlex Elder static void osd_req_op_data_release(struct ceph_osd_request *osd_req, 2785476492fSAlex Elder unsigned int which) 2795476492fSAlex Elder { 2805476492fSAlex Elder struct ceph_osd_req_op *op; 2815476492fSAlex Elder 2825476492fSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 2835476492fSAlex Elder op = &osd_req->r_ops[which]; 2845476492fSAlex Elder 2855476492fSAlex Elder switch (op->op) { 2865476492fSAlex Elder case CEPH_OSD_OP_READ: 2875476492fSAlex Elder case CEPH_OSD_OP_WRITE: 2885476492fSAlex Elder ceph_osd_data_release(&op->extent.osd_data); 2895476492fSAlex Elder break; 2905476492fSAlex Elder case CEPH_OSD_OP_CALL: 2915476492fSAlex Elder ceph_osd_data_release(&op->cls.request_info); 29204017e29SAlex Elder ceph_osd_data_release(&op->cls.request_data); 2935476492fSAlex Elder ceph_osd_data_release(&op->cls.response_data); 2945476492fSAlex Elder break; 295d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 296d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 297d74b50beSYan, Zheng ceph_osd_data_release(&op->xattr.osd_data); 298d74b50beSYan, Zheng break; 2995476492fSAlex Elder default: 3005476492fSAlex Elder break; 3015476492fSAlex Elder } 302c54d47bfSAlex Elder } 303c54d47bfSAlex Elder 3043d14c5d2SYehuda Sadeh /* 3053d14c5d2SYehuda Sadeh * requests 3063d14c5d2SYehuda Sadeh */ 3079e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 3083d14c5d2SYehuda Sadeh { 3099e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 3109e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 3115476492fSAlex Elder unsigned int which; 3123d14c5d2SYehuda Sadeh 3139e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 3149e94af20SIlya Dryomov req->r_request, req->r_reply); 3156562d661SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 3166562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_req_lru_item)); 3176562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_osd_item)); 3186562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_linger_item)); 3196562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_linger_osd_item)); 3206562d661SIlya Dryomov WARN_ON(req->r_osd); 3219e94af20SIlya Dryomov 3223d14c5d2SYehuda Sadeh if (req->r_request) 3233d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 324ace6d3a9SAlex Elder if (req->r_reply) { 3258921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 326ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 327ace6d3a9SAlex Elder } 3280fff87ecSAlex Elder 3295476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 3305476492fSAlex Elder osd_req_op_data_release(req, which); 3310fff87ecSAlex Elder 3323d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 3333d14c5d2SYehuda Sadeh if (req->r_mempool) 3343d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 3353d14c5d2SYehuda Sadeh else 3365522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 3375522ae0bSAlex Elder 3383d14c5d2SYehuda Sadeh } 3399e94af20SIlya Dryomov 3409e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 3419e94af20SIlya Dryomov { 3429e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3439e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3449e94af20SIlya Dryomov kref_get(&req->r_kref); 3459e94af20SIlya Dryomov } 3469e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 3479e94af20SIlya Dryomov 3489e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 3499e94af20SIlya Dryomov { 3509e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3519e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3529e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 3539e94af20SIlya Dryomov } 3549e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 3553d14c5d2SYehuda Sadeh 3563d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 3573d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 3581b83bef2SSage Weil unsigned int num_ops, 3593d14c5d2SYehuda Sadeh bool use_mempool, 36054a54007SAlex Elder gfp_t gfp_flags) 3613d14c5d2SYehuda Sadeh { 3623d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 3633d14c5d2SYehuda Sadeh struct ceph_msg *msg; 3641b83bef2SSage Weil size_t msg_size; 3653d14c5d2SYehuda Sadeh 36679528734SAlex Elder BUILD_BUG_ON(CEPH_OSD_MAX_OP > U16_MAX); 36779528734SAlex Elder BUG_ON(num_ops > CEPH_OSD_MAX_OP); 36879528734SAlex Elder 3691b83bef2SSage Weil msg_size = 4 + 4 + 8 + 8 + 4+8; 3701b83bef2SSage Weil msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 3711b83bef2SSage Weil msg_size += 1 + 8 + 4 + 4; /* pg_t */ 3722d0ebc5dSIlya Dryomov msg_size += 4 + CEPH_MAX_OID_NAME_LEN; /* oid */ 3731b83bef2SSage Weil msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); 3741b83bef2SSage Weil msg_size += 8; /* snapid */ 3751b83bef2SSage Weil msg_size += 8; /* snap_seq */ 3761b83bef2SSage Weil msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ 3771b83bef2SSage Weil msg_size += 4; 3783d14c5d2SYehuda Sadeh 3793d14c5d2SYehuda Sadeh if (use_mempool) { 3803d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 3813d14c5d2SYehuda Sadeh memset(req, 0, sizeof(*req)); 3823d14c5d2SYehuda Sadeh } else { 3835522ae0bSAlex Elder req = kmem_cache_zalloc(ceph_osd_request_cache, gfp_flags); 3843d14c5d2SYehuda Sadeh } 3853d14c5d2SYehuda Sadeh if (req == NULL) 3863d14c5d2SYehuda Sadeh return NULL; 3873d14c5d2SYehuda Sadeh 3883d14c5d2SYehuda Sadeh req->r_osdc = osdc; 3893d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 39079528734SAlex Elder req->r_num_ops = num_ops; 3913d14c5d2SYehuda Sadeh 3923d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 3933d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 3943d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 395a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 3963d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 397a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 3981d0326b1SIlya Dryomov INIT_LIST_HEAD(&req->r_linger_osd_item); 399935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 400cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 401cd43045cSSage Weil 4023c972c95SIlya Dryomov req->r_base_oloc.pool = -1; 403205ee118SIlya Dryomov req->r_target_oloc.pool = -1; 40422116525SIlya Dryomov 4053d14c5d2SYehuda Sadeh /* create reply message */ 4063d14c5d2SYehuda Sadeh if (use_mempool) 4073d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 4083d14c5d2SYehuda Sadeh else 4093d14c5d2SYehuda Sadeh msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, 410b61c2763SSage Weil OSD_OPREPLY_FRONT_LEN, gfp_flags, true); 4113d14c5d2SYehuda Sadeh if (!msg) { 4123d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 4133d14c5d2SYehuda Sadeh return NULL; 4143d14c5d2SYehuda Sadeh } 4153d14c5d2SYehuda Sadeh req->r_reply = msg; 4163d14c5d2SYehuda Sadeh 4173d14c5d2SYehuda Sadeh /* create request message; allow space for oid */ 4183d14c5d2SYehuda Sadeh if (use_mempool) 4193d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 4203d14c5d2SYehuda Sadeh else 421b61c2763SSage Weil msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); 4223d14c5d2SYehuda Sadeh if (!msg) { 4233d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 4243d14c5d2SYehuda Sadeh return NULL; 4253d14c5d2SYehuda Sadeh } 4263d14c5d2SYehuda Sadeh 4273d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 4283d14c5d2SYehuda Sadeh 4293d14c5d2SYehuda Sadeh req->r_request = msg; 4303d14c5d2SYehuda Sadeh 4313d14c5d2SYehuda Sadeh return req; 4323d14c5d2SYehuda Sadeh } 4333d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_alloc_request); 4343d14c5d2SYehuda Sadeh 435a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 436a8dd0a37SAlex Elder { 437a8dd0a37SAlex Elder switch (opcode) { 43870b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 43970b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 44070b5bfa3SIlya Dryomov #undef GENERATE_CASE 441a8dd0a37SAlex Elder default: 442a8dd0a37SAlex Elder return false; 443a8dd0a37SAlex Elder } 444a8dd0a37SAlex Elder } 445a8dd0a37SAlex Elder 44633803f33SAlex Elder /* 44733803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 44833803f33SAlex Elder * other information associated with them. It also serves as a 44933803f33SAlex Elder * common init routine for all the other init functions, below. 45033803f33SAlex Elder */ 451c99d2d4aSAlex Elder static struct ceph_osd_req_op * 45249719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 453c99d2d4aSAlex Elder u16 opcode) 45433803f33SAlex Elder { 455c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 456c99d2d4aSAlex Elder 457c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 45833803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 45933803f33SAlex Elder 460c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 46133803f33SAlex Elder memset(op, 0, sizeof (*op)); 46233803f33SAlex Elder op->op = opcode; 463c99d2d4aSAlex Elder 464c99d2d4aSAlex Elder return op; 46533803f33SAlex Elder } 46633803f33SAlex Elder 46749719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 46849719778SAlex Elder unsigned int which, u16 opcode) 46949719778SAlex Elder { 47049719778SAlex Elder (void)_osd_req_op_init(osd_req, which, opcode); 47149719778SAlex Elder } 47249719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 47349719778SAlex Elder 474c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 475c99d2d4aSAlex Elder unsigned int which, u16 opcode, 47633803f33SAlex Elder u64 offset, u64 length, 47733803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 47833803f33SAlex Elder { 47949719778SAlex Elder struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); 48033803f33SAlex Elder size_t payload_len = 0; 48133803f33SAlex Elder 482ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 483864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE); 48433803f33SAlex Elder 48533803f33SAlex Elder op->extent.offset = offset; 48633803f33SAlex Elder op->extent.length = length; 48733803f33SAlex Elder op->extent.truncate_size = truncate_size; 48833803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 48933803f33SAlex Elder if (opcode == CEPH_OSD_OP_WRITE) 49033803f33SAlex Elder payload_len += length; 49133803f33SAlex Elder 49233803f33SAlex Elder op->payload_len = payload_len; 49333803f33SAlex Elder } 49433803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 49533803f33SAlex Elder 496c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 497c99d2d4aSAlex Elder unsigned int which, u64 length) 498e5975c7cSAlex Elder { 499c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 500c99d2d4aSAlex Elder u64 previous; 501c99d2d4aSAlex Elder 502c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 503c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 504c99d2d4aSAlex Elder previous = op->extent.length; 505e5975c7cSAlex Elder 506e5975c7cSAlex Elder if (length == previous) 507e5975c7cSAlex Elder return; /* Nothing to do */ 508e5975c7cSAlex Elder BUG_ON(length > previous); 509e5975c7cSAlex Elder 510e5975c7cSAlex Elder op->extent.length = length; 511e5975c7cSAlex Elder op->payload_len -= previous - length; 512e5975c7cSAlex Elder } 513e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 514e5975c7cSAlex Elder 515c99d2d4aSAlex Elder void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 51604017e29SAlex Elder u16 opcode, const char *class, const char *method) 51733803f33SAlex Elder { 51849719778SAlex Elder struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); 5195f562df5SAlex Elder struct ceph_pagelist *pagelist; 52033803f33SAlex Elder size_t payload_len = 0; 52133803f33SAlex Elder size_t size; 52233803f33SAlex Elder 52333803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 52433803f33SAlex Elder 5255f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 5265f562df5SAlex Elder BUG_ON(!pagelist); 5275f562df5SAlex Elder ceph_pagelist_init(pagelist); 5285f562df5SAlex Elder 52933803f33SAlex Elder op->cls.class_name = class; 53033803f33SAlex Elder size = strlen(class); 53133803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 53233803f33SAlex Elder op->cls.class_len = size; 5335f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 53433803f33SAlex Elder payload_len += size; 53533803f33SAlex Elder 53633803f33SAlex Elder op->cls.method_name = method; 53733803f33SAlex Elder size = strlen(method); 53833803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 53933803f33SAlex Elder op->cls.method_len = size; 5405f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 54133803f33SAlex Elder payload_len += size; 54233803f33SAlex Elder 543a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 5445f562df5SAlex Elder 54533803f33SAlex Elder op->cls.argc = 0; /* currently unused */ 54633803f33SAlex Elder 54733803f33SAlex Elder op->payload_len = payload_len; 54833803f33SAlex Elder } 54933803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 5508c042b0dSAlex Elder 551d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 552d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 553d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 554d74b50beSYan, Zheng { 555d74b50beSYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); 556d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 557d74b50beSYan, Zheng size_t payload_len; 558d74b50beSYan, Zheng 559d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 560d74b50beSYan, Zheng 561d74b50beSYan, Zheng pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); 562d74b50beSYan, Zheng if (!pagelist) 563d74b50beSYan, Zheng return -ENOMEM; 564d74b50beSYan, Zheng 565d74b50beSYan, Zheng ceph_pagelist_init(pagelist); 566d74b50beSYan, Zheng 567d74b50beSYan, Zheng payload_len = strlen(name); 568d74b50beSYan, Zheng op->xattr.name_len = payload_len; 569d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 570d74b50beSYan, Zheng 571d74b50beSYan, Zheng op->xattr.value_len = size; 572d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 573d74b50beSYan, Zheng payload_len += size; 574d74b50beSYan, Zheng 575d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 576d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 577d74b50beSYan, Zheng 578d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 579d74b50beSYan, Zheng op->payload_len = payload_len; 580d74b50beSYan, Zheng return 0; 581d74b50beSYan, Zheng } 582d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 583d74b50beSYan, Zheng 584c99d2d4aSAlex Elder void osd_req_op_watch_init(struct ceph_osd_request *osd_req, 585c99d2d4aSAlex Elder unsigned int which, u16 opcode, 58633803f33SAlex Elder u64 cookie, u64 version, int flag) 58733803f33SAlex Elder { 58849719778SAlex Elder struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); 58933803f33SAlex Elder 590c99d2d4aSAlex Elder BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 59133803f33SAlex Elder 59233803f33SAlex Elder op->watch.cookie = cookie; 5939ef1ee5aSAlex Elder op->watch.ver = version; 59433803f33SAlex Elder if (opcode == CEPH_OSD_OP_WATCH && flag) 59533803f33SAlex Elder op->watch.flag = (u8)1; 59633803f33SAlex Elder } 59733803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_watch_init); 59833803f33SAlex Elder 599c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 600c647b8a8SIlya Dryomov unsigned int which, 601c647b8a8SIlya Dryomov u64 expected_object_size, 602c647b8a8SIlya Dryomov u64 expected_write_size) 603c647b8a8SIlya Dryomov { 604c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 605c647b8a8SIlya Dryomov CEPH_OSD_OP_SETALLOCHINT); 606c647b8a8SIlya Dryomov 607c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 608c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 609c647b8a8SIlya Dryomov 610c647b8a8SIlya Dryomov /* 611c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 612c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 613c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 614c647b8a8SIlya Dryomov */ 615c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 616c647b8a8SIlya Dryomov } 617c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 618c647b8a8SIlya Dryomov 61990af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 620ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 621ec9123c5SAlex Elder { 622ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 623ec9123c5SAlex Elder 624ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 625ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 626ec9123c5SAlex Elder if (length) 62790af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 628ec9123c5SAlex Elder length, osd_data->alignment); 629ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 630ec9123c5SAlex Elder BUG_ON(!length); 63190af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 632ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 633ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 63490af3602SAlex Elder ceph_msg_data_add_bio(msg, osd_data->bio, length); 635ec9123c5SAlex Elder #endif 636ec9123c5SAlex Elder } else { 637ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 638ec9123c5SAlex Elder } 639ec9123c5SAlex Elder } 640ec9123c5SAlex Elder 641175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 64279528734SAlex Elder struct ceph_osd_op *dst, unsigned int which) 6433d14c5d2SYehuda Sadeh { 64479528734SAlex Elder struct ceph_osd_req_op *src; 64504017e29SAlex Elder struct ceph_osd_data *osd_data; 64654d50649SAlex Elder u64 request_data_len = 0; 64704017e29SAlex Elder u64 data_length; 648175face2SAlex Elder 64979528734SAlex Elder BUG_ON(which >= req->r_num_ops); 65079528734SAlex Elder src = &req->r_ops[which]; 651a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 652a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 653a8dd0a37SAlex Elder 654a8dd0a37SAlex Elder return 0; 655a8dd0a37SAlex Elder } 6563d14c5d2SYehuda Sadeh 657065a68f9SAlex Elder switch (src->op) { 658fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 65949719778SAlex Elder osd_data = &src->raw_data_in; 66049719778SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 661fbfab539SAlex Elder break; 6623d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 6633d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 664ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 665ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 666175face2SAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 66754d50649SAlex Elder request_data_len = src->extent.length; 668175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 669175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 6703d14c5d2SYehuda Sadeh dst->extent.truncate_size = 6713d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 6723d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 6733d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 67404017e29SAlex Elder osd_data = &src->extent.osd_data; 6755476492fSAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 67604017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 6775476492fSAlex Elder else 67804017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 6793d14c5d2SYehuda Sadeh break; 6803d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 6813d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 6823d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 68304017e29SAlex Elder osd_data = &src->cls.request_info; 68404017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 68504017e29SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); 68604017e29SAlex Elder request_data_len = osd_data->pagelist->length; 68704017e29SAlex Elder 68804017e29SAlex Elder osd_data = &src->cls.request_data; 68904017e29SAlex Elder data_length = ceph_osd_data_length(osd_data); 69004017e29SAlex Elder if (data_length) { 69104017e29SAlex Elder BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); 69204017e29SAlex Elder dst->cls.indata_len = cpu_to_le32(data_length); 69304017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 69404017e29SAlex Elder src->payload_len += data_length; 69504017e29SAlex Elder request_data_len += data_length; 69604017e29SAlex Elder } 69704017e29SAlex Elder osd_data = &src->cls.response_data; 69804017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 6993d14c5d2SYehuda Sadeh break; 7003d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 7013d14c5d2SYehuda Sadeh break; 702a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 703a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 704a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 705a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 706a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 707a40c4f10SYehuda Sadeh break; 708c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 709c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 710c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 711c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 712c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 713c647b8a8SIlya Dryomov break; 714d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 715d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 716d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 717d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 718d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 719d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 720d74b50beSYan, Zheng osd_data = &src->xattr.osd_data; 721d74b50beSYan, Zheng ceph_osdc_msg_data_add(req->r_request, osd_data); 722d74b50beSYan, Zheng request_data_len = osd_data->pagelist->length; 723d74b50beSYan, Zheng break; 724864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 725864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 726864e9197SYan, Zheng break; 7273d14c5d2SYehuda Sadeh default: 7284c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 7298f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 7304c46459cSAlex Elder WARN_ON(1); 731a8dd0a37SAlex Elder 732a8dd0a37SAlex Elder return 0; 7333d14c5d2SYehuda Sadeh } 7347b25bf5fSIlya Dryomov 735a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 7367b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 7373d14c5d2SYehuda Sadeh dst->payload_len = cpu_to_le32(src->payload_len); 738175face2SAlex Elder 73954d50649SAlex Elder return request_data_len; 7403d14c5d2SYehuda Sadeh } 7413d14c5d2SYehuda Sadeh 7423d14c5d2SYehuda Sadeh /* 7433d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 7443d14c5d2SYehuda Sadeh * extent as needed. 7453d14c5d2SYehuda Sadeh * 7463d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 7473d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 7483d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 7493d14c5d2SYehuda Sadeh * 7503d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 7513d14c5d2SYehuda Sadeh * data quickly. 7523d14c5d2SYehuda Sadeh */ 7533d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 7543d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 7553d14c5d2SYehuda Sadeh struct ceph_vino vino, 756715e4cd4SYan, Zheng u64 off, u64 *plen, 757715e4cd4SYan, Zheng unsigned int which, int num_ops, 7583d14c5d2SYehuda Sadeh int opcode, int flags, 7593d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 7603d14c5d2SYehuda Sadeh u32 truncate_seq, 7613d14c5d2SYehuda Sadeh u64 truncate_size, 762153e5167SAlex Elder bool use_mempool) 7633d14c5d2SYehuda Sadeh { 7643d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 76575d1c941SAlex Elder u64 objnum = 0; 76675d1c941SAlex Elder u64 objoff = 0; 76775d1c941SAlex Elder u64 objlen = 0; 7686816282dSSage Weil int r; 7693d14c5d2SYehuda Sadeh 770ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 771864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 772864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 7733d14c5d2SYehuda Sadeh 774acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 775ae7ca4a3SAlex Elder GFP_NOFS); 7764ad12621SSage Weil if (!req) 7776816282dSSage Weil return ERR_PTR(-ENOMEM); 77879528734SAlex Elder 779d178a9e7SAlex Elder req->r_flags = flags; 7803d14c5d2SYehuda Sadeh 7813d14c5d2SYehuda Sadeh /* calculate max write size */ 782a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 7833ff5f385SAlex Elder if (r < 0) { 7843ff5f385SAlex Elder ceph_osdc_put_request(req); 7856816282dSSage Weil return ERR_PTR(r); 7863ff5f385SAlex Elder } 787a19dadfbSAlex Elder 788864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 789715e4cd4SYan, Zheng osd_req_op_init(req, which, opcode); 790864e9197SYan, Zheng } else { 791864e9197SYan, Zheng u32 object_size = le32_to_cpu(layout->fl_object_size); 792864e9197SYan, Zheng u32 object_base = off - objoff; 793ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 794d18d1e28SAlex Elder if (truncate_size <= object_base) { 795d18d1e28SAlex Elder truncate_size = 0; 796d18d1e28SAlex Elder } else { 797d18d1e28SAlex Elder truncate_size -= object_base; 798d18d1e28SAlex Elder if (truncate_size > object_size) 799d18d1e28SAlex Elder truncate_size = object_size; 800d18d1e28SAlex Elder } 801ccca4e37SYan, Zheng } 802715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 803b0270324SAlex Elder truncate_size, truncate_seq); 804864e9197SYan, Zheng } 805d18d1e28SAlex Elder 8063c972c95SIlya Dryomov req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); 8073d14c5d2SYehuda Sadeh 8083c972c95SIlya Dryomov snprintf(req->r_base_oid.name, sizeof(req->r_base_oid.name), 8094295f221SIlya Dryomov "%llx.%08llx", vino.ino, objnum); 8103c972c95SIlya Dryomov req->r_base_oid.name_len = strlen(req->r_base_oid.name); 811dbe0fc41SAlex Elder 8123d14c5d2SYehuda Sadeh return req; 8133d14c5d2SYehuda Sadeh } 8143d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 8153d14c5d2SYehuda Sadeh 8163d14c5d2SYehuda Sadeh /* 8173d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 8183d14c5d2SYehuda Sadeh */ 8193d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 8203d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 8213d14c5d2SYehuda Sadeh { 8223d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 8233d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 8243d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 8253d14c5d2SYehuda Sadeh 8263d14c5d2SYehuda Sadeh while (*p) { 8273d14c5d2SYehuda Sadeh parent = *p; 8283d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 8293d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 8303d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 8313d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 8323d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 8333d14c5d2SYehuda Sadeh else 8343d14c5d2SYehuda Sadeh BUG(); 8353d14c5d2SYehuda Sadeh } 8363d14c5d2SYehuda Sadeh 8373d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 8383d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 8393d14c5d2SYehuda Sadeh } 8403d14c5d2SYehuda Sadeh 8413d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 8423d14c5d2SYehuda Sadeh u64 tid) 8433d14c5d2SYehuda Sadeh { 8443d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 8453d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 8463d14c5d2SYehuda Sadeh 8473d14c5d2SYehuda Sadeh while (n) { 8483d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 8493d14c5d2SYehuda Sadeh if (tid < req->r_tid) 8503d14c5d2SYehuda Sadeh n = n->rb_left; 8513d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 8523d14c5d2SYehuda Sadeh n = n->rb_right; 8533d14c5d2SYehuda Sadeh else 8543d14c5d2SYehuda Sadeh return req; 8553d14c5d2SYehuda Sadeh } 8563d14c5d2SYehuda Sadeh return NULL; 8573d14c5d2SYehuda Sadeh } 8583d14c5d2SYehuda Sadeh 8593d14c5d2SYehuda Sadeh static struct ceph_osd_request * 8603d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 8613d14c5d2SYehuda Sadeh u64 tid) 8623d14c5d2SYehuda Sadeh { 8633d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 8643d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 8653d14c5d2SYehuda Sadeh 8663d14c5d2SYehuda Sadeh while (n) { 8673d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 8683d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 8693d14c5d2SYehuda Sadeh if (!n->rb_left) 8703d14c5d2SYehuda Sadeh return req; 8713d14c5d2SYehuda Sadeh n = n->rb_left; 8723d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 8733d14c5d2SYehuda Sadeh n = n->rb_right; 8743d14c5d2SYehuda Sadeh } else { 8753d14c5d2SYehuda Sadeh return req; 8763d14c5d2SYehuda Sadeh } 8773d14c5d2SYehuda Sadeh } 8783d14c5d2SYehuda Sadeh return NULL; 8793d14c5d2SYehuda Sadeh } 8803d14c5d2SYehuda Sadeh 8812cc6128aSIlya Dryomov static void __kick_linger_request(struct ceph_osd_request *req) 8822cc6128aSIlya Dryomov { 8832cc6128aSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 8842cc6128aSIlya Dryomov struct ceph_osd *osd = req->r_osd; 8852cc6128aSIlya Dryomov 8862cc6128aSIlya Dryomov /* 8872cc6128aSIlya Dryomov * Linger requests need to be resent with a new tid to avoid 8882cc6128aSIlya Dryomov * the dup op detection logic on the OSDs. Achieve this with 8892cc6128aSIlya Dryomov * a re-register dance instead of open-coding. 8902cc6128aSIlya Dryomov */ 8912cc6128aSIlya Dryomov ceph_osdc_get_request(req); 8922cc6128aSIlya Dryomov if (!list_empty(&req->r_linger_item)) 8932cc6128aSIlya Dryomov __unregister_linger_request(osdc, req); 8942cc6128aSIlya Dryomov else 8952cc6128aSIlya Dryomov __unregister_request(osdc, req); 8962cc6128aSIlya Dryomov __register_request(osdc, req); 8972cc6128aSIlya Dryomov ceph_osdc_put_request(req); 8982cc6128aSIlya Dryomov 8992cc6128aSIlya Dryomov /* 9002cc6128aSIlya Dryomov * Unless request has been registered as both normal and 9012cc6128aSIlya Dryomov * lingering, __unregister{,_linger}_request clears r_osd. 9022cc6128aSIlya Dryomov * However, here we need to preserve r_osd to make sure we 9032cc6128aSIlya Dryomov * requeue on the same OSD. 9042cc6128aSIlya Dryomov */ 9052cc6128aSIlya Dryomov WARN_ON(req->r_osd || !osd); 9062cc6128aSIlya Dryomov req->r_osd = osd; 9072cc6128aSIlya Dryomov 9082cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, req->r_tid); 9092cc6128aSIlya Dryomov __enqueue_request(req); 9102cc6128aSIlya Dryomov } 9112cc6128aSIlya Dryomov 9126f6c7006SSage Weil /* 9136f6c7006SSage Weil * Resubmit requests pending on the given osd. 9146f6c7006SSage Weil */ 9156f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 9166f6c7006SSage Weil struct ceph_osd *osd) 9176f6c7006SSage Weil { 918a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 919e02493c0SAlex Elder LIST_HEAD(resend); 9202cc6128aSIlya Dryomov LIST_HEAD(resend_linger); 9216f6c7006SSage Weil int err; 9226f6c7006SSage Weil 9232cc6128aSIlya Dryomov dout("%s osd%d\n", __func__, osd->o_osd); 9246f6c7006SSage Weil err = __reset_osd(osdc, osd); 925685a7555SAlex Elder if (err) 9266f6c7006SSage Weil return; 9272cc6128aSIlya Dryomov 928e02493c0SAlex Elder /* 929e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 930e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 931e02493c0SAlex Elder * sent in tid order, and that is also the order they're 932e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 933e02493c0SAlex Elder * flight will be found first, followed by all requests that 934e02493c0SAlex Elder * have not yet been sent. And to resend requests while 935e02493c0SAlex Elder * preserving this order we will want to put any sent 936e02493c0SAlex Elder * requests back on the front of the osd client's unsent 937e02493c0SAlex Elder * list. 938e02493c0SAlex Elder * 939e02493c0SAlex Elder * So we build a separate ordered list of already-sent 940e02493c0SAlex Elder * requests for the affected osd and splice it onto the 941e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 942e02493c0SAlex Elder * request that has not yet been sent we're done. Those 943e02493c0SAlex Elder * requests are already sitting right where they belong. 944e02493c0SAlex Elder */ 9456f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 946e02493c0SAlex Elder if (!req->r_sent) 947e02493c0SAlex Elder break; 9482cc6128aSIlya Dryomov 9492cc6128aSIlya Dryomov if (!req->r_linger) { 9502cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, 9512cc6128aSIlya Dryomov req->r_tid); 952e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 9536f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 9542cc6128aSIlya Dryomov } else { 9552cc6128aSIlya Dryomov list_move_tail(&req->r_req_lru_item, &resend_linger); 9562cc6128aSIlya Dryomov } 9576f6c7006SSage Weil } 958e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 959a40c4f10SYehuda Sadeh 960e02493c0SAlex Elder /* 9612cc6128aSIlya Dryomov * Both registered and not yet registered linger requests are 9622cc6128aSIlya Dryomov * enqueued with a new tid on the same OSD. We add/move them 9632cc6128aSIlya Dryomov * to req_unsent/o_requests at the end to keep things in tid 9642cc6128aSIlya Dryomov * order. 965e02493c0SAlex Elder */ 966a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 9671d0326b1SIlya Dryomov r_linger_osd_item) { 9682cc6128aSIlya Dryomov WARN_ON(!list_empty(&req->r_req_lru_item)); 9692cc6128aSIlya Dryomov __kick_linger_request(req); 970a40c4f10SYehuda Sadeh } 9712cc6128aSIlya Dryomov 9722cc6128aSIlya Dryomov list_for_each_entry_safe(req, nreq, &resend_linger, r_req_lru_item) 9732cc6128aSIlya Dryomov __kick_linger_request(req); 9746f6c7006SSage Weil } 9756f6c7006SSage Weil 9763d14c5d2SYehuda Sadeh /* 9773d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 9783d14c5d2SYehuda Sadeh */ 9793d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 9803d14c5d2SYehuda Sadeh { 9813d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 9823d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 9833d14c5d2SYehuda Sadeh 9843d14c5d2SYehuda Sadeh if (!osd) 9853d14c5d2SYehuda Sadeh return; 9863d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 9873d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 9883d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 98983aff95eSSage Weil mutex_lock(&osdc->request_mutex); 99083aff95eSSage Weil __kick_osd_requests(osdc, osd); 991f9d25199SAlex Elder __send_queued(osdc); 99283aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 9933d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 9943d14c5d2SYehuda Sadeh } 9953d14c5d2SYehuda Sadeh 9963d14c5d2SYehuda Sadeh /* 9973d14c5d2SYehuda Sadeh * Track open sessions with osds. 9983d14c5d2SYehuda Sadeh */ 999e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 10003d14c5d2SYehuda Sadeh { 10013d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10023d14c5d2SYehuda Sadeh 10033d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 10043d14c5d2SYehuda Sadeh if (!osd) 10053d14c5d2SYehuda Sadeh return NULL; 10063d14c5d2SYehuda Sadeh 10073d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 10083d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1009e10006f8SAlex Elder osd->o_osd = onum; 1010f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 10113d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 1012a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 10133d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 10143d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 10153d14c5d2SYehuda Sadeh 1016b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 10173d14c5d2SYehuda Sadeh 10183d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 10193d14c5d2SYehuda Sadeh return osd; 10203d14c5d2SYehuda Sadeh } 10213d14c5d2SYehuda Sadeh 10223d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 10233d14c5d2SYehuda Sadeh { 10243d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 10253d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 10263d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 10273d14c5d2SYehuda Sadeh return osd; 10283d14c5d2SYehuda Sadeh } else { 10293d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 10303d14c5d2SYehuda Sadeh return NULL; 10313d14c5d2SYehuda Sadeh } 10323d14c5d2SYehuda Sadeh } 10333d14c5d2SYehuda Sadeh 10343d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 10353d14c5d2SYehuda Sadeh { 10363d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 10373d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 1038b28ec2f3SIlya Dryomov if (atomic_dec_and_test(&osd->o_ref)) { 10393d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 10403d14c5d2SYehuda Sadeh 1041b28ec2f3SIlya Dryomov if (osd->o_auth.authorizer) 104227859f97SSage Weil ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); 10433d14c5d2SYehuda Sadeh kfree(osd); 10443d14c5d2SYehuda Sadeh } 10453d14c5d2SYehuda Sadeh } 10463d14c5d2SYehuda Sadeh 10473d14c5d2SYehuda Sadeh /* 10483d14c5d2SYehuda Sadeh * remove an osd from our map 10493d14c5d2SYehuda Sadeh */ 10503d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 10513d14c5d2SYehuda Sadeh { 10527eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 1053cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_requests)); 1054cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_linger_requests)); 10557c6e6fc5SIlya Dryomov 10563d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 10577eb71e03SIlya Dryomov rb_erase(&osd->o_node, &osdc->osds); 10587eb71e03SIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 10597eb71e03SIlya Dryomov } 10607eb71e03SIlya Dryomov 10617eb71e03SIlya Dryomov static void remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 10627eb71e03SIlya Dryomov { 10637eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 10647eb71e03SIlya Dryomov 10657eb71e03SIlya Dryomov if (!RB_EMPTY_NODE(&osd->o_node)) { 10663d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 10677eb71e03SIlya Dryomov __remove_osd(osdc, osd); 10683d14c5d2SYehuda Sadeh put_osd(osd); 10693d14c5d2SYehuda Sadeh } 10707eb71e03SIlya Dryomov } 10713d14c5d2SYehuda Sadeh 1072aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 1073aca420bcSSage Weil { 1074048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 1075aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 1076aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 1077aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 1078aca420bcSSage Weil struct ceph_osd, o_node); 10797eb71e03SIlya Dryomov remove_osd(osdc, osd); 1080aca420bcSSage Weil } 1081aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 1082aca420bcSSage Weil } 1083aca420bcSSage Weil 10843d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 10853d14c5d2SYehuda Sadeh struct ceph_osd *osd) 10863d14c5d2SYehuda Sadeh { 1087bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 10883d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1089bbf37ec3SIlya Dryomov 10903d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 10913d14c5d2SYehuda Sadeh osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; 10923d14c5d2SYehuda Sadeh } 10933d14c5d2SYehuda Sadeh 1094bbf37ec3SIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd_client *osdc, 1095bbf37ec3SIlya Dryomov struct ceph_osd *osd) 1096bbf37ec3SIlya Dryomov { 1097bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 1098bbf37ec3SIlya Dryomov 1099bbf37ec3SIlya Dryomov if (list_empty(&osd->o_requests) && 1100bbf37ec3SIlya Dryomov list_empty(&osd->o_linger_requests)) 1101bbf37ec3SIlya Dryomov __move_osd_to_lru(osdc, osd); 1102bbf37ec3SIlya Dryomov } 1103bbf37ec3SIlya Dryomov 11043d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 11053d14c5d2SYehuda Sadeh { 11063d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 11073d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 11083d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 11093d14c5d2SYehuda Sadeh } 11103d14c5d2SYehuda Sadeh 1111aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 11123d14c5d2SYehuda Sadeh { 11133d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 11143d14c5d2SYehuda Sadeh 11153d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 11163d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 11173d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 1118aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 11193d14c5d2SYehuda Sadeh break; 11207eb71e03SIlya Dryomov remove_osd(osdc, osd); 11213d14c5d2SYehuda Sadeh } 11223d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 11233d14c5d2SYehuda Sadeh } 11243d14c5d2SYehuda Sadeh 11253d14c5d2SYehuda Sadeh /* 11263d14c5d2SYehuda Sadeh * reset osd connect 11273d14c5d2SYehuda Sadeh */ 11283d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 11293d14c5d2SYehuda Sadeh { 1130c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 11313d14c5d2SYehuda Sadeh 11323d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 1133a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 1134a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 11357eb71e03SIlya Dryomov remove_osd(osdc, osd); 1136c3acb181SAlex Elder return -ENODEV; 1137c3acb181SAlex Elder } 1138c3acb181SAlex Elder 1139c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 1140c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 11413d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 1142c3acb181SAlex Elder struct ceph_osd_request *req; 1143c3acb181SAlex Elder 11443d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 11450b4af2e8SIlya Dryomov "letting msgr retry\n"); 11463d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 11473d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 11483d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1149c3acb181SAlex Elder 1150c3acb181SAlex Elder return -EAGAIN; 11513d14c5d2SYehuda Sadeh } 1152c3acb181SAlex Elder 1153c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1154c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1155c3acb181SAlex Elder osd->o_incarnation++; 1156c3acb181SAlex Elder 1157c3acb181SAlex Elder return 0; 11583d14c5d2SYehuda Sadeh } 11593d14c5d2SYehuda Sadeh 11603d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 11613d14c5d2SYehuda Sadeh { 11623d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 11633d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 11643d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 11653d14c5d2SYehuda Sadeh 1166aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 11673d14c5d2SYehuda Sadeh while (*p) { 11683d14c5d2SYehuda Sadeh parent = *p; 11693d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 11703d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 11713d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 11723d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 11733d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 11743d14c5d2SYehuda Sadeh else 11753d14c5d2SYehuda Sadeh BUG(); 11763d14c5d2SYehuda Sadeh } 11773d14c5d2SYehuda Sadeh 11783d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 11793d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 11803d14c5d2SYehuda Sadeh } 11813d14c5d2SYehuda Sadeh 11823d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 11833d14c5d2SYehuda Sadeh { 11843d14c5d2SYehuda Sadeh struct ceph_osd *osd; 11853d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 11863d14c5d2SYehuda Sadeh 11873d14c5d2SYehuda Sadeh while (n) { 11883d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 11893d14c5d2SYehuda Sadeh if (o < osd->o_osd) 11903d14c5d2SYehuda Sadeh n = n->rb_left; 11913d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 11923d14c5d2SYehuda Sadeh n = n->rb_right; 11933d14c5d2SYehuda Sadeh else 11943d14c5d2SYehuda Sadeh return osd; 11953d14c5d2SYehuda Sadeh } 11963d14c5d2SYehuda Sadeh return NULL; 11973d14c5d2SYehuda Sadeh } 11983d14c5d2SYehuda Sadeh 11993d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 12003d14c5d2SYehuda Sadeh { 12013d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 12023d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ); 12033d14c5d2SYehuda Sadeh } 12043d14c5d2SYehuda Sadeh 12053d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 12063d14c5d2SYehuda Sadeh { 12073d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 12083d14c5d2SYehuda Sadeh } 12093d14c5d2SYehuda Sadeh 12103d14c5d2SYehuda Sadeh /* 12113d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 12123d14c5d2SYehuda Sadeh * the timeout event. 12133d14c5d2SYehuda Sadeh */ 1214a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 12153d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 12163d14c5d2SYehuda Sadeh { 12173d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 12183d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 121977f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 12203d14c5d2SYehuda Sadeh __insert_request(osdc, req); 12213d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 12223d14c5d2SYehuda Sadeh osdc->num_requests++; 12233d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 12243d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 12253d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 12263d14c5d2SYehuda Sadeh } 1227a40c4f10SYehuda Sadeh } 1228a40c4f10SYehuda Sadeh 12293d14c5d2SYehuda Sadeh /* 12303d14c5d2SYehuda Sadeh * called under osdc->request_mutex 12313d14c5d2SYehuda Sadeh */ 12323d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 12333d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 12343d14c5d2SYehuda Sadeh { 123535f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 123635f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 123735f9f8a0SSage Weil req, req->r_tid); 123835f9f8a0SSage Weil return; 123935f9f8a0SSage Weil } 124035f9f8a0SSage Weil 12413d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 12423d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 12436562d661SIlya Dryomov RB_CLEAR_NODE(&req->r_node); 12443d14c5d2SYehuda Sadeh osdc->num_requests--; 12453d14c5d2SYehuda Sadeh 12463d14c5d2SYehuda Sadeh if (req->r_osd) { 12473d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 12486740a845SAlex Elder ceph_msg_revoke(req->r_request); 12493d14c5d2SYehuda Sadeh 12503d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1251bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 12524f23409eSIlya Dryomov if (list_empty(&req->r_linger_osd_item)) 12533d14c5d2SYehuda Sadeh req->r_osd = NULL; 12543d14c5d2SYehuda Sadeh } 12553d14c5d2SYehuda Sadeh 12567d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 12573d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 12583d14c5d2SYehuda Sadeh 12593d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 12603d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 12613d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 12623d14c5d2SYehuda Sadeh } 12633d14c5d2SYehuda Sadeh } 12643d14c5d2SYehuda Sadeh 12653d14c5d2SYehuda Sadeh /* 12663d14c5d2SYehuda Sadeh * Cancel a previously queued request message 12673d14c5d2SYehuda Sadeh */ 12683d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 12693d14c5d2SYehuda Sadeh { 12703d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 12716740a845SAlex Elder ceph_msg_revoke(req->r_request); 12723d14c5d2SYehuda Sadeh req->r_sent = 0; 12733d14c5d2SYehuda Sadeh } 12743d14c5d2SYehuda Sadeh } 12753d14c5d2SYehuda Sadeh 1276a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1277a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1278a40c4f10SYehuda Sadeh { 1279af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1280af593064SIlya Dryomov WARN_ON(!req->r_linger); 1281af593064SIlya Dryomov 128296e4dac6SAlex Elder ceph_osdc_get_request(req); 1283a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 12846194ea89SSage Weil if (req->r_osd) 12851d0326b1SIlya Dryomov list_add_tail(&req->r_linger_osd_item, 12866194ea89SSage Weil &req->r_osd->o_linger_requests); 1287a40c4f10SYehuda Sadeh } 1288a40c4f10SYehuda Sadeh 1289a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1290a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1291a40c4f10SYehuda Sadeh { 1292af593064SIlya Dryomov WARN_ON(!req->r_linger); 1293af593064SIlya Dryomov 1294af593064SIlya Dryomov if (list_empty(&req->r_linger_item)) { 1295af593064SIlya Dryomov dout("%s %p tid %llu not registered\n", __func__, req, 1296af593064SIlya Dryomov req->r_tid); 1297af593064SIlya Dryomov return; 1298af593064SIlya Dryomov } 1299af593064SIlya Dryomov 1300af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1301a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 1302af593064SIlya Dryomov 130361c74035SAlex Elder if (req->r_osd) { 13041d0326b1SIlya Dryomov list_del_init(&req->r_linger_osd_item); 1305bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 1306fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1307a40c4f10SYehuda Sadeh req->r_osd = NULL; 1308a40c4f10SYehuda Sadeh } 1309ba9d114eSIlya Dryomov 1310ba9d114eSIlya Dryomov list_del_init(&req->r_req_lru_item); /* can be on notarget */ 131196e4dac6SAlex Elder ceph_osdc_put_request(req); 1312a40c4f10SYehuda Sadeh } 1313a40c4f10SYehuda Sadeh 1314a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1315a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1316a40c4f10SYehuda Sadeh { 1317a40c4f10SYehuda Sadeh if (!req->r_linger) { 1318a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1319a40c4f10SYehuda Sadeh req->r_linger = 1; 1320a40c4f10SYehuda Sadeh } 1321a40c4f10SYehuda Sadeh } 1322a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1323a40c4f10SYehuda Sadeh 13243d14c5d2SYehuda Sadeh /* 1325d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1326d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1327d29adb34SJosh Durgin * 1328d29adb34SJosh Durgin * Caller should hold map_sem for read. 1329d29adb34SJosh Durgin */ 1330d29adb34SJosh Durgin static bool __req_should_be_paused(struct ceph_osd_client *osdc, 1331d29adb34SJosh Durgin struct ceph_osd_request *req) 1332d29adb34SJosh Durgin { 1333d29adb34SJosh Durgin bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 1334d29adb34SJosh Durgin bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 1335d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 1336d29adb34SJosh Durgin return (req->r_flags & CEPH_OSD_FLAG_READ && pauserd) || 1337d29adb34SJosh Durgin (req->r_flags & CEPH_OSD_FLAG_WRITE && pausewr); 1338d29adb34SJosh Durgin } 1339d29adb34SJosh Durgin 1340d29adb34SJosh Durgin /* 134117a13e40SIlya Dryomov * Calculate mapping of a request to a PG. Takes tiering into account. 134217a13e40SIlya Dryomov */ 134317a13e40SIlya Dryomov static int __calc_request_pg(struct ceph_osdmap *osdmap, 134417a13e40SIlya Dryomov struct ceph_osd_request *req, 134517a13e40SIlya Dryomov struct ceph_pg *pg_out) 134617a13e40SIlya Dryomov { 1347205ee118SIlya Dryomov bool need_check_tiering; 1348205ee118SIlya Dryomov 1349205ee118SIlya Dryomov need_check_tiering = false; 1350205ee118SIlya Dryomov if (req->r_target_oloc.pool == -1) { 1351205ee118SIlya Dryomov req->r_target_oloc = req->r_base_oloc; /* struct */ 1352205ee118SIlya Dryomov need_check_tiering = true; 1353205ee118SIlya Dryomov } 1354205ee118SIlya Dryomov if (req->r_target_oid.name_len == 0) { 1355205ee118SIlya Dryomov ceph_oid_copy(&req->r_target_oid, &req->r_base_oid); 1356205ee118SIlya Dryomov need_check_tiering = true; 1357205ee118SIlya Dryomov } 1358205ee118SIlya Dryomov 1359205ee118SIlya Dryomov if (need_check_tiering && 1360205ee118SIlya Dryomov (req->r_flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 136117a13e40SIlya Dryomov struct ceph_pg_pool_info *pi; 136217a13e40SIlya Dryomov 1363205ee118SIlya Dryomov pi = ceph_pg_pool_by_id(osdmap, req->r_target_oloc.pool); 136417a13e40SIlya Dryomov if (pi) { 136517a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_READ) && 136617a13e40SIlya Dryomov pi->read_tier >= 0) 1367205ee118SIlya Dryomov req->r_target_oloc.pool = pi->read_tier; 136817a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 136917a13e40SIlya Dryomov pi->write_tier >= 0) 1370205ee118SIlya Dryomov req->r_target_oloc.pool = pi->write_tier; 137117a13e40SIlya Dryomov } 137217a13e40SIlya Dryomov /* !pi is caught in ceph_oloc_oid_to_pg() */ 137317a13e40SIlya Dryomov } 137417a13e40SIlya Dryomov 1375205ee118SIlya Dryomov return ceph_oloc_oid_to_pg(osdmap, &req->r_target_oloc, 1376205ee118SIlya Dryomov &req->r_target_oid, pg_out); 137717a13e40SIlya Dryomov } 137817a13e40SIlya Dryomov 1379f671b581SIlya Dryomov static void __enqueue_request(struct ceph_osd_request *req) 1380f671b581SIlya Dryomov { 1381f671b581SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 1382f671b581SIlya Dryomov 1383f671b581SIlya Dryomov dout("%s %p tid %llu to osd%d\n", __func__, req, req->r_tid, 1384f671b581SIlya Dryomov req->r_osd ? req->r_osd->o_osd : -1); 1385f671b581SIlya Dryomov 1386f671b581SIlya Dryomov if (req->r_osd) { 1387f671b581SIlya Dryomov __remove_osd_from_lru(req->r_osd); 1388f671b581SIlya Dryomov list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1389f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 1390f671b581SIlya Dryomov } else { 1391f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 1392f671b581SIlya Dryomov } 1393f671b581SIlya Dryomov } 1394f671b581SIlya Dryomov 139517a13e40SIlya Dryomov /* 13963d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 13973d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 139825985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 13996f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 14003d14c5d2SYehuda Sadeh * 14013d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 14023d14c5d2SYehuda Sadeh * 14033d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 14043d14c5d2SYehuda Sadeh */ 14056f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 140638d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 14073d14c5d2SYehuda Sadeh { 14085b191d99SSage Weil struct ceph_pg pgid; 14093d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 14108008ab10SIlya Dryomov int num, o; 14113d14c5d2SYehuda Sadeh int err; 1412d29adb34SJosh Durgin bool was_paused; 14133d14c5d2SYehuda Sadeh 14146f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 141517a13e40SIlya Dryomov 141617a13e40SIlya Dryomov err = __calc_request_pg(osdc->osdmap, req, &pgid); 14176f6c7006SSage Weil if (err) { 14186f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 14193d14c5d2SYehuda Sadeh return err; 14206f6c7006SSage Weil } 14213d14c5d2SYehuda Sadeh req->r_pgid = pgid; 14223d14c5d2SYehuda Sadeh 14238008ab10SIlya Dryomov num = ceph_calc_pg_acting(osdc->osdmap, pgid, acting, &o); 14248008ab10SIlya Dryomov if (num < 0) 14258008ab10SIlya Dryomov num = 0; 14263d14c5d2SYehuda Sadeh 1427d29adb34SJosh Durgin was_paused = req->r_paused; 1428d29adb34SJosh Durgin req->r_paused = __req_should_be_paused(osdc, req); 1429d29adb34SJosh Durgin if (was_paused && !req->r_paused) 1430d29adb34SJosh Durgin force_resend = 1; 1431d29adb34SJosh Durgin 143238d6453cSSage Weil if ((!force_resend && 143338d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 14343d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 14353d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 14363d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 1437d29adb34SJosh Durgin (req->r_osd == NULL && o == -1) || 1438d29adb34SJosh Durgin req->r_paused) 14393d14c5d2SYehuda Sadeh return 0; /* no change */ 14403d14c5d2SYehuda Sadeh 14415b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 14425b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 14433d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 14443d14c5d2SYehuda Sadeh 14453d14c5d2SYehuda Sadeh /* record full pg acting set */ 14463d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 14473d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 14483d14c5d2SYehuda Sadeh 14493d14c5d2SYehuda Sadeh if (req->r_osd) { 14503d14c5d2SYehuda Sadeh __cancel_request(req); 14513d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1452a390de02SIlya Dryomov list_del_init(&req->r_linger_osd_item); 14533d14c5d2SYehuda Sadeh req->r_osd = NULL; 14543d14c5d2SYehuda Sadeh } 14553d14c5d2SYehuda Sadeh 14563d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 14573d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 14583d14c5d2SYehuda Sadeh err = -ENOMEM; 1459e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 14606f6c7006SSage Weil if (!req->r_osd) { 14616f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 14623d14c5d2SYehuda Sadeh goto out; 14636f6c7006SSage Weil } 14643d14c5d2SYehuda Sadeh 14656f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 14663d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 14673d14c5d2SYehuda Sadeh 1468b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1469b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1470b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 14713d14c5d2SYehuda Sadeh } 14723d14c5d2SYehuda Sadeh 1473f671b581SIlya Dryomov __enqueue_request(req); 14743d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 14753d14c5d2SYehuda Sadeh 14763d14c5d2SYehuda Sadeh out: 14773d14c5d2SYehuda Sadeh return err; 14783d14c5d2SYehuda Sadeh } 14793d14c5d2SYehuda Sadeh 14803d14c5d2SYehuda Sadeh /* 14813d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 14823d14c5d2SYehuda Sadeh */ 148356e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 14843d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 14853d14c5d2SYehuda Sadeh { 14861b83bef2SSage Weil void *p; 14873d14c5d2SYehuda Sadeh 14881b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 14891b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 14901b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 14913d14c5d2SYehuda Sadeh 14921b83bef2SSage Weil /* fill in message content that changes each time we send it */ 14931b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 14941b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 1495205ee118SIlya Dryomov put_unaligned_le64(req->r_target_oloc.pool, req->r_request_pool); 14961b83bef2SSage Weil p = req->r_request_pgid; 14971b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 14981b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 14991b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 15001b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 15011b83bef2SSage Weil sizeof(req->r_reassert_version)); 15022169aea6SSage Weil 15033d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 15043d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 15053d14c5d2SYehuda Sadeh 15063d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 150726be8808SAlex Elder 15083d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 150926be8808SAlex Elder 151026be8808SAlex Elder ceph_con_send(&req->r_osd->o_con, req->r_request); 15113d14c5d2SYehuda Sadeh } 15123d14c5d2SYehuda Sadeh 15133d14c5d2SYehuda Sadeh /* 15146f6c7006SSage Weil * Send any requests in the queue (req_unsent). 15156f6c7006SSage Weil */ 1516f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 15176f6c7006SSage Weil { 15186f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 15196f6c7006SSage Weil 1520f9d25199SAlex Elder dout("__send_queued\n"); 1521f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 15226f6c7006SSage Weil __send_request(osdc, req); 15236f6c7006SSage Weil } 15246f6c7006SSage Weil 15256f6c7006SSage Weil /* 15260bbfdfe8SIlya Dryomov * Caller should hold map_sem for read and request_mutex. 15270bbfdfe8SIlya Dryomov */ 15280bbfdfe8SIlya Dryomov static int __ceph_osdc_start_request(struct ceph_osd_client *osdc, 15290bbfdfe8SIlya Dryomov struct ceph_osd_request *req, 15300bbfdfe8SIlya Dryomov bool nofail) 15310bbfdfe8SIlya Dryomov { 15320bbfdfe8SIlya Dryomov int rc; 15330bbfdfe8SIlya Dryomov 15340bbfdfe8SIlya Dryomov __register_request(osdc, req); 15350bbfdfe8SIlya Dryomov req->r_sent = 0; 15360bbfdfe8SIlya Dryomov req->r_got_reply = 0; 15370bbfdfe8SIlya Dryomov rc = __map_request(osdc, req, 0); 15380bbfdfe8SIlya Dryomov if (rc < 0) { 15390bbfdfe8SIlya Dryomov if (nofail) { 15400bbfdfe8SIlya Dryomov dout("osdc_start_request failed map, " 15410bbfdfe8SIlya Dryomov " will retry %lld\n", req->r_tid); 15420bbfdfe8SIlya Dryomov rc = 0; 15430bbfdfe8SIlya Dryomov } else { 15440bbfdfe8SIlya Dryomov __unregister_request(osdc, req); 15450bbfdfe8SIlya Dryomov } 15460bbfdfe8SIlya Dryomov return rc; 15470bbfdfe8SIlya Dryomov } 15480bbfdfe8SIlya Dryomov 15490bbfdfe8SIlya Dryomov if (req->r_osd == NULL) { 15500bbfdfe8SIlya Dryomov dout("send_request %p no up osds in pg\n", req); 15510bbfdfe8SIlya Dryomov ceph_monc_request_next_osdmap(&osdc->client->monc); 15520bbfdfe8SIlya Dryomov } else { 15530bbfdfe8SIlya Dryomov __send_queued(osdc); 15540bbfdfe8SIlya Dryomov } 15550bbfdfe8SIlya Dryomov 15560bbfdfe8SIlya Dryomov return 0; 15570bbfdfe8SIlya Dryomov } 15580bbfdfe8SIlya Dryomov 15590bbfdfe8SIlya Dryomov /* 15603d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 15613d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 15623d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 15633d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 15643d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 15653d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 15663d14c5d2SYehuda Sadeh * there are no open requests). 15673d14c5d2SYehuda Sadeh */ 15683d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 15693d14c5d2SYehuda Sadeh { 15703d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 15713d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 157283aff95eSSage Weil struct ceph_osd_request *req; 15733d14c5d2SYehuda Sadeh struct ceph_osd *osd; 15743d14c5d2SYehuda Sadeh unsigned long keepalive = 15753d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ; 15763d14c5d2SYehuda Sadeh struct list_head slow_osds; 15773d14c5d2SYehuda Sadeh dout("timeout\n"); 15783d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 15793d14c5d2SYehuda Sadeh 15803d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 15813d14c5d2SYehuda Sadeh 15823d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 15833d14c5d2SYehuda Sadeh 15843d14c5d2SYehuda Sadeh /* 15853d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 15863d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 15873d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 15883d14c5d2SYehuda Sadeh */ 15893d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 15903d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 15913d14c5d2SYehuda Sadeh if (time_before(jiffies, req->r_stamp + keepalive)) 15923d14c5d2SYehuda Sadeh break; 15933d14c5d2SYehuda Sadeh 15943d14c5d2SYehuda Sadeh osd = req->r_osd; 15953d14c5d2SYehuda Sadeh BUG_ON(!osd); 15963d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 15973d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 15983d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 15993d14c5d2SYehuda Sadeh } 16003d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 16013d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 16023d14c5d2SYehuda Sadeh o_keepalive_item); 16033d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 16043d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 16053d14c5d2SYehuda Sadeh } 16063d14c5d2SYehuda Sadeh 16073d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1608f9d25199SAlex Elder __send_queued(osdc); 16093d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 16103d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16113d14c5d2SYehuda Sadeh } 16123d14c5d2SYehuda Sadeh 16133d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 16143d14c5d2SYehuda Sadeh { 16153d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 16163d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 16173d14c5d2SYehuda Sadeh osds_timeout_work.work); 16183d14c5d2SYehuda Sadeh unsigned long delay = 16193d14c5d2SYehuda Sadeh osdc->client->options->osd_idle_ttl * HZ >> 2; 16203d14c5d2SYehuda Sadeh 16213d14c5d2SYehuda Sadeh dout("osds timeout\n"); 16223d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1623aca420bcSSage Weil remove_old_osds(osdc); 16243d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16253d14c5d2SYehuda Sadeh 16263d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 16273d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 16283d14c5d2SYehuda Sadeh } 16293d14c5d2SYehuda Sadeh 1630205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 1631205ee118SIlya Dryomov struct ceph_object_locator *oloc) 1632205ee118SIlya Dryomov { 1633205ee118SIlya Dryomov u8 struct_v, struct_cv; 1634205ee118SIlya Dryomov u32 len; 1635205ee118SIlya Dryomov void *struct_end; 1636205ee118SIlya Dryomov int ret = 0; 1637205ee118SIlya Dryomov 1638205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1639205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1640205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1641205ee118SIlya Dryomov if (struct_v < 3) { 1642205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 1643205ee118SIlya Dryomov struct_v, struct_cv); 1644205ee118SIlya Dryomov goto e_inval; 1645205ee118SIlya Dryomov } 1646205ee118SIlya Dryomov if (struct_cv > 6) { 1647205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 1648205ee118SIlya Dryomov struct_v, struct_cv); 1649205ee118SIlya Dryomov goto e_inval; 1650205ee118SIlya Dryomov } 1651205ee118SIlya Dryomov len = ceph_decode_32(p); 1652205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1653205ee118SIlya Dryomov struct_end = *p + len; 1654205ee118SIlya Dryomov 1655205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 1656205ee118SIlya Dryomov *p += 4; /* skip preferred */ 1657205ee118SIlya Dryomov 1658205ee118SIlya Dryomov len = ceph_decode_32(p); 1659205ee118SIlya Dryomov if (len > 0) { 1660205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 1661205ee118SIlya Dryomov goto e_inval; 1662205ee118SIlya Dryomov } 1663205ee118SIlya Dryomov 1664205ee118SIlya Dryomov if (struct_v >= 5) { 1665205ee118SIlya Dryomov len = ceph_decode_32(p); 1666205ee118SIlya Dryomov if (len > 0) { 1667205ee118SIlya Dryomov pr_warn("ceph_object_locator::nspace is set\n"); 1668205ee118SIlya Dryomov goto e_inval; 1669205ee118SIlya Dryomov } 1670205ee118SIlya Dryomov } 1671205ee118SIlya Dryomov 1672205ee118SIlya Dryomov if (struct_v >= 6) { 1673205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 1674205ee118SIlya Dryomov if (hash != -1) { 1675205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 1676205ee118SIlya Dryomov goto e_inval; 1677205ee118SIlya Dryomov } 1678205ee118SIlya Dryomov } 1679205ee118SIlya Dryomov 1680205ee118SIlya Dryomov /* skip the rest */ 1681205ee118SIlya Dryomov *p = struct_end; 1682205ee118SIlya Dryomov out: 1683205ee118SIlya Dryomov return ret; 1684205ee118SIlya Dryomov 1685205ee118SIlya Dryomov e_inval: 1686205ee118SIlya Dryomov ret = -EINVAL; 1687205ee118SIlya Dryomov goto out; 1688205ee118SIlya Dryomov } 1689205ee118SIlya Dryomov 1690205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 1691205ee118SIlya Dryomov struct ceph_request_redirect *redir) 1692205ee118SIlya Dryomov { 1693205ee118SIlya Dryomov u8 struct_v, struct_cv; 1694205ee118SIlya Dryomov u32 len; 1695205ee118SIlya Dryomov void *struct_end; 1696205ee118SIlya Dryomov int ret; 1697205ee118SIlya Dryomov 1698205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1699205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1700205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1701205ee118SIlya Dryomov if (struct_cv > 1) { 1702205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 1703205ee118SIlya Dryomov struct_v, struct_cv); 1704205ee118SIlya Dryomov goto e_inval; 1705205ee118SIlya Dryomov } 1706205ee118SIlya Dryomov len = ceph_decode_32(p); 1707205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1708205ee118SIlya Dryomov struct_end = *p + len; 1709205ee118SIlya Dryomov 1710205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 1711205ee118SIlya Dryomov if (ret) 1712205ee118SIlya Dryomov goto out; 1713205ee118SIlya Dryomov 1714205ee118SIlya Dryomov len = ceph_decode_32(p); 1715205ee118SIlya Dryomov if (len > 0) { 1716205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 1717205ee118SIlya Dryomov goto e_inval; 1718205ee118SIlya Dryomov } 1719205ee118SIlya Dryomov 1720205ee118SIlya Dryomov len = ceph_decode_32(p); 1721205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 1722205ee118SIlya Dryomov 1723205ee118SIlya Dryomov /* skip the rest */ 1724205ee118SIlya Dryomov *p = struct_end; 1725205ee118SIlya Dryomov out: 1726205ee118SIlya Dryomov return ret; 1727205ee118SIlya Dryomov 1728205ee118SIlya Dryomov e_inval: 1729205ee118SIlya Dryomov ret = -EINVAL; 1730205ee118SIlya Dryomov goto out; 1731205ee118SIlya Dryomov } 1732205ee118SIlya Dryomov 173325845472SSage Weil static void complete_request(struct ceph_osd_request *req) 173425845472SSage Weil { 173525845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 173625845472SSage Weil } 173725845472SSage Weil 17383d14c5d2SYehuda Sadeh /* 17393d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 17403d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 17413d14c5d2SYehuda Sadeh */ 17423d14c5d2SYehuda Sadeh static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 17433d14c5d2SYehuda Sadeh struct ceph_connection *con) 17443d14c5d2SYehuda Sadeh { 17451b83bef2SSage Weil void *p, *end; 17463d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1747205ee118SIlya Dryomov struct ceph_request_redirect redir; 17483d14c5d2SYehuda Sadeh u64 tid; 17491b83bef2SSage Weil int object_len; 175079528734SAlex Elder unsigned int numops; 175179528734SAlex Elder int payload_len, flags; 17523d14c5d2SYehuda Sadeh s32 result; 17531b83bef2SSage Weil s32 retry_attempt; 17541b83bef2SSage Weil struct ceph_pg pg; 17551b83bef2SSage Weil int err; 17561b83bef2SSage Weil u32 reassert_epoch; 17571b83bef2SSage Weil u64 reassert_version; 17581b83bef2SSage Weil u32 osdmap_epoch; 17590d5af164SAlex Elder int already_completed; 17609fc6e064SAlex Elder u32 bytes; 176179528734SAlex Elder unsigned int i; 17623d14c5d2SYehuda Sadeh 17633d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 17641b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 17651b83bef2SSage Weil 17661b83bef2SSage Weil p = msg->front.iov_base; 17671b83bef2SSage Weil end = p + msg->front.iov_len; 17681b83bef2SSage Weil 17691b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 17701b83bef2SSage Weil object_len = ceph_decode_32(&p); 17711b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 17721b83bef2SSage Weil p += object_len; 17731b83bef2SSage Weil 1774ef4859d6SAlex Elder err = ceph_decode_pgid(&p, end, &pg); 17751b83bef2SSage Weil if (err) 17763d14c5d2SYehuda Sadeh goto bad; 17771b83bef2SSage Weil 17781b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 17791b83bef2SSage Weil flags = ceph_decode_64(&p); 17801b83bef2SSage Weil result = ceph_decode_32(&p); 17811b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 17821b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 17831b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 17841b83bef2SSage Weil 17853d14c5d2SYehuda Sadeh /* lookup */ 1786ff513aceSIlya Dryomov down_read(&osdc->map_sem); 17873d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 17883d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 17893d14c5d2SYehuda Sadeh if (req == NULL) { 17903d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 17918058fd45SAlex Elder goto bad_mutex; 17923d14c5d2SYehuda Sadeh } 17933d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 17941b83bef2SSage Weil 17951b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 17961b83bef2SSage Weil req, result); 17971b83bef2SSage Weil 179818741196SDan Carpenter ceph_decode_need(&p, end, 4, bad_put); 17991b83bef2SSage Weil numops = ceph_decode_32(&p); 18001b83bef2SSage Weil if (numops > CEPH_OSD_MAX_OP) 18011b83bef2SSage Weil goto bad_put; 18021b83bef2SSage Weil if (numops != req->r_num_ops) 18031b83bef2SSage Weil goto bad_put; 18041b83bef2SSage Weil payload_len = 0; 180518741196SDan Carpenter ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put); 18061b83bef2SSage Weil for (i = 0; i < numops; i++) { 18071b83bef2SSage Weil struct ceph_osd_op *op = p; 18081b83bef2SSage Weil int len; 18091b83bef2SSage Weil 18101b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 18111b83bef2SSage Weil req->r_reply_op_len[i] = len; 18121b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 18131b83bef2SSage Weil payload_len += len; 18141b83bef2SSage Weil p += sizeof(*op); 18151b83bef2SSage Weil } 18169fc6e064SAlex Elder bytes = le32_to_cpu(msg->hdr.data_len); 18179fc6e064SAlex Elder if (payload_len != bytes) { 1818b9a67899SJoe Perches pr_warn("sum of op payload lens %d != data_len %d\n", 18199fc6e064SAlex Elder payload_len, bytes); 18201b83bef2SSage Weil goto bad_put; 18211b83bef2SSage Weil } 18221b83bef2SSage Weil 182318741196SDan Carpenter ceph_decode_need(&p, end, 4 + numops * 4, bad_put); 18241b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 18251b83bef2SSage Weil for (i = 0; i < numops; i++) 18261b83bef2SSage Weil req->r_reply_op_result[i] = ceph_decode_32(&p); 18273d14c5d2SYehuda Sadeh 1828205ee118SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 6) { 1829205ee118SIlya Dryomov p += 8 + 4; /* skip replay_version */ 1830205ee118SIlya Dryomov p += 8; /* skip user_version */ 1831205ee118SIlya Dryomov 1832205ee118SIlya Dryomov err = ceph_redirect_decode(&p, end, &redir); 1833205ee118SIlya Dryomov if (err) 1834205ee118SIlya Dryomov goto bad_put; 1835205ee118SIlya Dryomov } else { 1836205ee118SIlya Dryomov redir.oloc.pool = -1; 1837205ee118SIlya Dryomov } 1838205ee118SIlya Dryomov 1839205ee118SIlya Dryomov if (redir.oloc.pool != -1) { 1840205ee118SIlya Dryomov dout("redirect pool %lld\n", redir.oloc.pool); 1841205ee118SIlya Dryomov 1842205ee118SIlya Dryomov __unregister_request(osdc, req); 1843205ee118SIlya Dryomov 1844205ee118SIlya Dryomov req->r_target_oloc = redir.oloc; /* struct */ 1845205ee118SIlya Dryomov 1846205ee118SIlya Dryomov /* 1847205ee118SIlya Dryomov * Start redirect requests with nofail=true. If 1848205ee118SIlya Dryomov * mapping fails, request will end up on the notarget 1849205ee118SIlya Dryomov * list, waiting for the new osdmap (which can take 1850205ee118SIlya Dryomov * a while), even though the original request mapped 1851205ee118SIlya Dryomov * successfully. In the future we might want to follow 1852205ee118SIlya Dryomov * original request's nofail setting here. 1853205ee118SIlya Dryomov */ 1854ff513aceSIlya Dryomov err = __ceph_osdc_start_request(osdc, req, true); 1855205ee118SIlya Dryomov BUG_ON(err); 1856205ee118SIlya Dryomov 1857ff513aceSIlya Dryomov goto out_unlock; 1858205ee118SIlya Dryomov } 1859205ee118SIlya Dryomov 1860eb845ff1SYan, Zheng already_completed = req->r_got_reply; 18613d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 18621b83bef2SSage Weil req->r_result = result; 18633d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 18643d14c5d2SYehuda Sadeh bytes); 18653d14c5d2SYehuda Sadeh if (req->r_result == 0) 18663d14c5d2SYehuda Sadeh req->r_result = bytes; 18673d14c5d2SYehuda Sadeh 18683d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 18691b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 18701b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 18713d14c5d2SYehuda Sadeh 18723d14c5d2SYehuda Sadeh req->r_got_reply = 1; 18733d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 18743d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 1875ff513aceSIlya Dryomov goto out_unlock; 18763d14c5d2SYehuda Sadeh } 18773d14c5d2SYehuda Sadeh 18783d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 18793d14c5d2SYehuda Sadeh 1880a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1881a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1882a40c4f10SYehuda Sadeh 18833d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 18843d14c5d2SYehuda Sadeh if (result < 0 || 18853d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 18863d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 18873d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 18883d14c5d2SYehuda Sadeh 18893d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1890ff513aceSIlya Dryomov up_read(&osdc->map_sem); 18913d14c5d2SYehuda Sadeh 1892eb845ff1SYan, Zheng if (!already_completed) { 189361c5d6bfSYan, Zheng if (req->r_unsafe_callback && 189461c5d6bfSYan, Zheng result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK)) 189561c5d6bfSYan, Zheng req->r_unsafe_callback(req, true); 18963d14c5d2SYehuda Sadeh if (req->r_callback) 18973d14c5d2SYehuda Sadeh req->r_callback(req, msg); 18983d14c5d2SYehuda Sadeh else 18993d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 1900eb845ff1SYan, Zheng } 19013d14c5d2SYehuda Sadeh 190261c5d6bfSYan, Zheng if (flags & CEPH_OSD_FLAG_ONDISK) { 190361c5d6bfSYan, Zheng if (req->r_unsafe_callback && already_completed) 190461c5d6bfSYan, Zheng req->r_unsafe_callback(req, false); 190525845472SSage Weil complete_request(req); 190661c5d6bfSYan, Zheng } 19073d14c5d2SYehuda Sadeh 1908ff513aceSIlya Dryomov out: 1909a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 19103d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 19113d14c5d2SYehuda Sadeh return; 1912ff513aceSIlya Dryomov out_unlock: 1913ff513aceSIlya Dryomov mutex_unlock(&osdc->request_mutex); 1914ff513aceSIlya Dryomov up_read(&osdc->map_sem); 1915ff513aceSIlya Dryomov goto out; 19163d14c5d2SYehuda Sadeh 19171b83bef2SSage Weil bad_put: 191837c89bdeSLi Wang req->r_result = -EIO; 191937c89bdeSLi Wang __unregister_request(osdc, req); 192037c89bdeSLi Wang if (req->r_callback) 192137c89bdeSLi Wang req->r_callback(req, msg); 192237c89bdeSLi Wang else 192337c89bdeSLi Wang complete_all(&req->r_completion); 192437c89bdeSLi Wang complete_request(req); 19251b83bef2SSage Weil ceph_osdc_put_request(req); 19268058fd45SAlex Elder bad_mutex: 19278058fd45SAlex Elder mutex_unlock(&osdc->request_mutex); 1928ff513aceSIlya Dryomov up_read(&osdc->map_sem); 19293d14c5d2SYehuda Sadeh bad: 19301b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 19311b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 19323d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 19333d14c5d2SYehuda Sadeh } 19343d14c5d2SYehuda Sadeh 19356f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 19363d14c5d2SYehuda Sadeh { 19373d14c5d2SYehuda Sadeh struct rb_node *p, *n; 19383d14c5d2SYehuda Sadeh 19397eb71e03SIlya Dryomov dout("%s %p\n", __func__, osdc); 19403d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 19416f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 19423d14c5d2SYehuda Sadeh 19433d14c5d2SYehuda Sadeh n = rb_next(p); 19443d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 19453d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 19463d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 19473d14c5d2SYehuda Sadeh osd->o_osd), 19483d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 19493d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 19503d14c5d2SYehuda Sadeh } 19513d14c5d2SYehuda Sadeh } 19523d14c5d2SYehuda Sadeh 19533d14c5d2SYehuda Sadeh /* 19546f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 19556f6c7006SSage Weil * no osd, request a new map. 19563d14c5d2SYehuda Sadeh * 1957e6d50f67SAlex Elder * Caller should hold map_sem for read. 19583d14c5d2SYehuda Sadeh */ 19599a1ea2dbSJosh Durgin static void kick_requests(struct ceph_osd_client *osdc, bool force_resend, 19609a1ea2dbSJosh Durgin bool force_resend_writes) 19613d14c5d2SYehuda Sadeh { 1962a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 19636f6c7006SSage Weil struct rb_node *p; 19646f6c7006SSage Weil int needmap = 0; 19656f6c7006SSage Weil int err; 19669a1ea2dbSJosh Durgin bool force_resend_req; 19673d14c5d2SYehuda Sadeh 19689a1ea2dbSJosh Durgin dout("kick_requests %s %s\n", force_resend ? " (force resend)" : "", 19699a1ea2dbSJosh Durgin force_resend_writes ? " (force resend writes)" : ""); 19703d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19716194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 19726f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 19736194ea89SSage Weil p = rb_next(p); 1974ab60b16dSAlex Elder 1975ab60b16dSAlex Elder /* 1976ab60b16dSAlex Elder * For linger requests that have not yet been 1977ab60b16dSAlex Elder * registered, move them to the linger list; they'll 1978ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 1979ab60b16dSAlex Elder * the request before re-registering it as a linger 1980ab60b16dSAlex Elder * request to ensure the __map_request() below 1981ab60b16dSAlex Elder * will decide it needs to be sent. 1982ab60b16dSAlex Elder */ 1983ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 1984ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 1985ab60b16dSAlex Elder req, req->r_tid, 1986ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 198796e4dac6SAlex Elder ceph_osdc_get_request(req); 1988ab60b16dSAlex Elder __unregister_request(osdc, req); 1989ab60b16dSAlex Elder __register_linger_request(osdc, req); 199096e4dac6SAlex Elder ceph_osdc_put_request(req); 1991ab60b16dSAlex Elder continue; 1992ab60b16dSAlex Elder } 1993ab60b16dSAlex Elder 19949a1ea2dbSJosh Durgin force_resend_req = force_resend || 19959a1ea2dbSJosh Durgin (force_resend_writes && 19969a1ea2dbSJosh Durgin req->r_flags & CEPH_OSD_FLAG_WRITE); 19979a1ea2dbSJosh Durgin err = __map_request(osdc, req, force_resend_req); 19986f6c7006SSage Weil if (err < 0) 19996f6c7006SSage Weil continue; /* error */ 20006f6c7006SSage Weil if (req->r_osd == NULL) { 20016f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 20026f6c7006SSage Weil needmap++; /* request a newer map */ 20036f6c7006SSage Weil } else if (err > 0) { 20046194ea89SSage Weil if (!req->r_linger) { 20056194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 20066194ea89SSage Weil req->r_tid, 20076f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 20086f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 20096f6c7006SSage Weil } 20106f6c7006SSage Weil } 20116194ea89SSage Weil } 2012a40c4f10SYehuda Sadeh 2013a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 2014a40c4f10SYehuda Sadeh r_linger_item) { 2015a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 2016a40c4f10SYehuda Sadeh 20179a1ea2dbSJosh Durgin err = __map_request(osdc, req, 20189a1ea2dbSJosh Durgin force_resend || force_resend_writes); 2019ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 2020a40c4f10SYehuda Sadeh if (err == 0) 2021a40c4f10SYehuda Sadeh continue; /* no change and no osd was specified */ 2022a40c4f10SYehuda Sadeh if (err < 0) 2023a40c4f10SYehuda Sadeh continue; /* hrm! */ 2024a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 2025a40c4f10SYehuda Sadeh dout("tid %llu maps to no valid osd\n", req->r_tid); 2026a40c4f10SYehuda Sadeh needmap++; /* request a newer map */ 2027a40c4f10SYehuda Sadeh continue; 2028a40c4f10SYehuda Sadeh } 2029a40c4f10SYehuda Sadeh 2030a40c4f10SYehuda Sadeh dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid, 2031a40c4f10SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 2032a40c4f10SYehuda Sadeh __register_request(osdc, req); 2033c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 2034a40c4f10SYehuda Sadeh } 203514d2f38dSAlex Elder reset_changed_osds(osdc); 20363d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 20373d14c5d2SYehuda Sadeh 20383d14c5d2SYehuda Sadeh if (needmap) { 20393d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 20403d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 20413d14c5d2SYehuda Sadeh } 20423d14c5d2SYehuda Sadeh } 20436f6c7006SSage Weil 20446f6c7006SSage Weil 20453d14c5d2SYehuda Sadeh /* 20463d14c5d2SYehuda Sadeh * Process updated osd map. 20473d14c5d2SYehuda Sadeh * 20483d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 20493d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 20503d14c5d2SYehuda Sadeh * off to different OSDs as needed. 20513d14c5d2SYehuda Sadeh */ 20523d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 20533d14c5d2SYehuda Sadeh { 20543d14c5d2SYehuda Sadeh void *p, *end, *next; 20553d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 20563d14c5d2SYehuda Sadeh u32 epoch; 20573d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 20583d14c5d2SYehuda Sadeh int err; 20593d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 20609a1ea2dbSJosh Durgin bool was_full; 20613d14c5d2SYehuda Sadeh 20623d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 20633d14c5d2SYehuda Sadeh p = msg->front.iov_base; 20643d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 20653d14c5d2SYehuda Sadeh 20663d14c5d2SYehuda Sadeh /* verify fsid */ 20673d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 20683d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 20693d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 20703d14c5d2SYehuda Sadeh return; 20713d14c5d2SYehuda Sadeh 20723d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 20733d14c5d2SYehuda Sadeh 20749a1ea2dbSJosh Durgin was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 20759a1ea2dbSJosh Durgin 20763d14c5d2SYehuda Sadeh /* incremental maps */ 20773d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 20783d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 20793d14c5d2SYehuda Sadeh while (nr_maps > 0) { 20803d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 20813d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 20823d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 20833d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 20843d14c5d2SYehuda Sadeh next = p + maplen; 20853d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 20863d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 20873d14c5d2SYehuda Sadeh epoch, maplen); 20883d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 20893d14c5d2SYehuda Sadeh osdc->osdmap, 209015d9882cSAlex Elder &osdc->client->msgr); 20913d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 20923d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 20933d14c5d2SYehuda Sadeh goto bad; 20943d14c5d2SYehuda Sadeh } 20953d14c5d2SYehuda Sadeh BUG_ON(!newmap); 20963d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 20973d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 20983d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 20993d14c5d2SYehuda Sadeh } 21009a1ea2dbSJosh Durgin was_full = was_full || 21019a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 21029a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 21039a1ea2dbSJosh Durgin kick_requests(osdc, 0, was_full); 21043d14c5d2SYehuda Sadeh } else { 21053d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 21063d14c5d2SYehuda Sadeh epoch, maplen); 21073d14c5d2SYehuda Sadeh } 21083d14c5d2SYehuda Sadeh p = next; 21093d14c5d2SYehuda Sadeh nr_maps--; 21103d14c5d2SYehuda Sadeh } 21113d14c5d2SYehuda Sadeh if (newmap) 21123d14c5d2SYehuda Sadeh goto done; 21133d14c5d2SYehuda Sadeh 21143d14c5d2SYehuda Sadeh /* full maps */ 21153d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 21163d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 21173d14c5d2SYehuda Sadeh while (nr_maps) { 21183d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 21193d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 21203d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 21213d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 21223d14c5d2SYehuda Sadeh if (nr_maps > 1) { 21233d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 21243d14c5d2SYehuda Sadeh epoch, maplen); 21253d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 21263d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 21273d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 21283d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 21293d14c5d2SYehuda Sadeh } else { 213038d6453cSSage Weil int skipped_map = 0; 213138d6453cSSage Weil 21323d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 2133a2505d63SIlya Dryomov newmap = ceph_osdmap_decode(&p, p+maplen); 21343d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 21353d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 21363d14c5d2SYehuda Sadeh goto bad; 21373d14c5d2SYehuda Sadeh } 21383d14c5d2SYehuda Sadeh BUG_ON(!newmap); 21393d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 21403d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 214138d6453cSSage Weil if (oldmap) { 214238d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 214338d6453cSSage Weil skipped_map = 1; 21443d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 214538d6453cSSage Weil } 21469a1ea2dbSJosh Durgin was_full = was_full || 21479a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 21489a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 21499a1ea2dbSJosh Durgin kick_requests(osdc, skipped_map, was_full); 21503d14c5d2SYehuda Sadeh } 21513d14c5d2SYehuda Sadeh p += maplen; 21523d14c5d2SYehuda Sadeh nr_maps--; 21533d14c5d2SYehuda Sadeh } 21543d14c5d2SYehuda Sadeh 2155b72e19b9SDan Carpenter if (!osdc->osdmap) 2156b72e19b9SDan Carpenter goto bad; 21573d14c5d2SYehuda Sadeh done: 21583d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 21593d14c5d2SYehuda Sadeh ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); 2160cd634fb6SSage Weil 2161cd634fb6SSage Weil /* 2162cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 2163cd634fb6SSage Weil * we find out when we are no longer full and stop returning 2164cd634fb6SSage Weil * ENOSPC. 2165cd634fb6SSage Weil */ 2166d29adb34SJosh Durgin if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 2167d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || 2168d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) 2169cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 2170cd634fb6SSage Weil 2171f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 2172f9d25199SAlex Elder __send_queued(osdc); 2173f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 21743d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 21753d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 21763d14c5d2SYehuda Sadeh return; 21773d14c5d2SYehuda Sadeh 21783d14c5d2SYehuda Sadeh bad: 21793d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 21803d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 21813d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 21823d14c5d2SYehuda Sadeh } 21833d14c5d2SYehuda Sadeh 21843d14c5d2SYehuda Sadeh /* 2185a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 2186a40c4f10SYehuda Sadeh * 2187a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 2188a40c4f10SYehuda Sadeh */ 2189a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 2190a40c4f10SYehuda Sadeh { 2191a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 2192a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 2193a40c4f10SYehuda Sadeh 2194a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 2195a40c4f10SYehuda Sadeh kfree(event); 2196a40c4f10SYehuda Sadeh } 2197a40c4f10SYehuda Sadeh 2198a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 2199a40c4f10SYehuda Sadeh { 2200a40c4f10SYehuda Sadeh kref_get(&event->kref); 2201a40c4f10SYehuda Sadeh } 2202a40c4f10SYehuda Sadeh 2203a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 2204a40c4f10SYehuda Sadeh { 2205a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 2206a40c4f10SYehuda Sadeh } 2207a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 2208a40c4f10SYehuda Sadeh 2209a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 2210a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 2211a40c4f10SYehuda Sadeh { 2212a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2213a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2214a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2215a40c4f10SYehuda Sadeh 2216a40c4f10SYehuda Sadeh while (*p) { 2217a40c4f10SYehuda Sadeh parent = *p; 2218a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2219a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 2220a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2221a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 2222a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2223a40c4f10SYehuda Sadeh else 2224a40c4f10SYehuda Sadeh BUG(); 2225a40c4f10SYehuda Sadeh } 2226a40c4f10SYehuda Sadeh 2227a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 2228a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 2229a40c4f10SYehuda Sadeh } 2230a40c4f10SYehuda Sadeh 2231a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 2232a40c4f10SYehuda Sadeh u64 cookie) 2233a40c4f10SYehuda Sadeh { 2234a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2235a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2236a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2237a40c4f10SYehuda Sadeh 2238a40c4f10SYehuda Sadeh while (*p) { 2239a40c4f10SYehuda Sadeh parent = *p; 2240a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2241a40c4f10SYehuda Sadeh if (cookie < event->cookie) 2242a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2243a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 2244a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2245a40c4f10SYehuda Sadeh else 2246a40c4f10SYehuda Sadeh return event; 2247a40c4f10SYehuda Sadeh } 2248a40c4f10SYehuda Sadeh return NULL; 2249a40c4f10SYehuda Sadeh } 2250a40c4f10SYehuda Sadeh 2251a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 2252a40c4f10SYehuda Sadeh { 2253a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2254a40c4f10SYehuda Sadeh 2255a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 2256a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 2257a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 2258a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2259a40c4f10SYehuda Sadeh } else { 2260a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 2261a40c4f10SYehuda Sadeh } 2262a40c4f10SYehuda Sadeh } 2263a40c4f10SYehuda Sadeh 2264a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 2265a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 22663c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 2267a40c4f10SYehuda Sadeh { 2268a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2269a40c4f10SYehuda Sadeh 2270a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 2271a40c4f10SYehuda Sadeh if (!event) 2272a40c4f10SYehuda Sadeh return -ENOMEM; 2273a40c4f10SYehuda Sadeh 2274a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 2275a40c4f10SYehuda Sadeh event->cb = event_cb; 22763c663bbdSAlex Elder event->one_shot = 0; 2277a40c4f10SYehuda Sadeh event->data = data; 2278a40c4f10SYehuda Sadeh event->osdc = osdc; 2279a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 22803ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 2281a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 2282a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 2283a40c4f10SYehuda Sadeh 2284a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2285a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 2286a40c4f10SYehuda Sadeh __insert_event(osdc, event); 2287a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2288a40c4f10SYehuda Sadeh 2289a40c4f10SYehuda Sadeh *pevent = event; 2290a40c4f10SYehuda Sadeh return 0; 2291a40c4f10SYehuda Sadeh } 2292a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 2293a40c4f10SYehuda Sadeh 2294a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 2295a40c4f10SYehuda Sadeh { 2296a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2297a40c4f10SYehuda Sadeh 2298a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 2299a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2300a40c4f10SYehuda Sadeh __remove_event(event); 2301a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2302a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 2303a40c4f10SYehuda Sadeh } 2304a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 2305a40c4f10SYehuda Sadeh 2306a40c4f10SYehuda Sadeh 2307a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 2308a40c4f10SYehuda Sadeh { 2309a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 2310a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 2311a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 2312a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 2313a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 2314a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 2315a40c4f10SYehuda Sadeh 2316a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 2317a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 2318a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 2319a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2320a40c4f10SYehuda Sadeh kfree(event_work); 2321a40c4f10SYehuda Sadeh } 2322a40c4f10SYehuda Sadeh 2323a40c4f10SYehuda Sadeh 2324a40c4f10SYehuda Sadeh /* 2325a40c4f10SYehuda Sadeh * Process osd watch notifications 2326a40c4f10SYehuda Sadeh */ 23273c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 23283c663bbdSAlex Elder struct ceph_msg *msg) 2329a40c4f10SYehuda Sadeh { 2330a40c4f10SYehuda Sadeh void *p, *end; 2331a40c4f10SYehuda Sadeh u8 proto_ver; 2332a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 2333a40c4f10SYehuda Sadeh u8 opcode; 2334a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2335a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 2336a40c4f10SYehuda Sadeh 2337a40c4f10SYehuda Sadeh p = msg->front.iov_base; 2338a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 2339a40c4f10SYehuda Sadeh 2340a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 2341a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 2342a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 2343a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 2344a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 2345a40c4f10SYehuda Sadeh 2346a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2347a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 2348a40c4f10SYehuda Sadeh if (event) { 23493c663bbdSAlex Elder BUG_ON(event->one_shot); 2350a40c4f10SYehuda Sadeh get_event(event); 2351a40c4f10SYehuda Sadeh } 2352a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2353a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 2354a40c4f10SYehuda Sadeh cookie, ver, event); 2355a40c4f10SYehuda Sadeh if (event) { 2356a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 2357a40c4f10SYehuda Sadeh if (!event_work) { 235891883cd2SIlya Dryomov pr_err("couldn't allocate event_work\n"); 235991883cd2SIlya Dryomov ceph_osdc_put_event(event); 236091883cd2SIlya Dryomov return; 2361a40c4f10SYehuda Sadeh } 23626b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 2363a40c4f10SYehuda Sadeh event_work->event = event; 2364a40c4f10SYehuda Sadeh event_work->ver = ver; 2365a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 2366a40c4f10SYehuda Sadeh event_work->opcode = opcode; 236791883cd2SIlya Dryomov 236891883cd2SIlya Dryomov queue_work(osdc->notify_wq, &event_work->work); 2369a40c4f10SYehuda Sadeh } 2370a40c4f10SYehuda Sadeh 2371a40c4f10SYehuda Sadeh return; 2372a40c4f10SYehuda Sadeh 2373a40c4f10SYehuda Sadeh bad: 2374a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 2375a40c4f10SYehuda Sadeh } 2376a40c4f10SYehuda Sadeh 2377a40c4f10SYehuda Sadeh /* 2378e65550fdSAlex Elder * build new request AND message 2379e65550fdSAlex Elder * 2380e65550fdSAlex Elder */ 2381e65550fdSAlex Elder void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, 2382e65550fdSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 2383e65550fdSAlex Elder struct timespec *mtime) 2384e65550fdSAlex Elder { 2385e65550fdSAlex Elder struct ceph_msg *msg = req->r_request; 2386e65550fdSAlex Elder void *p; 2387e65550fdSAlex Elder size_t msg_size; 2388e65550fdSAlex Elder int flags = req->r_flags; 2389e65550fdSAlex Elder u64 data_len; 2390e65550fdSAlex Elder unsigned int i; 2391e65550fdSAlex Elder 2392e65550fdSAlex Elder req->r_snapid = snap_id; 2393e65550fdSAlex Elder req->r_snapc = ceph_get_snap_context(snapc); 2394e65550fdSAlex Elder 2395e65550fdSAlex Elder /* encode request */ 2396e65550fdSAlex Elder msg->hdr.version = cpu_to_le16(4); 2397e65550fdSAlex Elder 2398e65550fdSAlex Elder p = msg->front.iov_base; 2399e65550fdSAlex Elder ceph_encode_32(&p, 1); /* client_inc is always 1 */ 2400e65550fdSAlex Elder req->r_request_osdmap_epoch = p; 2401e65550fdSAlex Elder p += 4; 2402e65550fdSAlex Elder req->r_request_flags = p; 2403e65550fdSAlex Elder p += 4; 2404e65550fdSAlex Elder if (req->r_flags & CEPH_OSD_FLAG_WRITE) 2405e65550fdSAlex Elder ceph_encode_timespec(p, mtime); 2406e65550fdSAlex Elder p += sizeof(struct ceph_timespec); 2407e65550fdSAlex Elder req->r_request_reassert_version = p; 2408e65550fdSAlex Elder p += sizeof(struct ceph_eversion); /* will get filled in */ 2409e65550fdSAlex Elder 2410e65550fdSAlex Elder /* oloc */ 2411e65550fdSAlex Elder ceph_encode_8(&p, 4); 2412e65550fdSAlex Elder ceph_encode_8(&p, 4); 2413e65550fdSAlex Elder ceph_encode_32(&p, 8 + 4 + 4); 2414e65550fdSAlex Elder req->r_request_pool = p; 2415e65550fdSAlex Elder p += 8; 2416e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2417e65550fdSAlex Elder ceph_encode_32(&p, 0); /* key len */ 2418e65550fdSAlex Elder 2419e65550fdSAlex Elder ceph_encode_8(&p, 1); 2420e65550fdSAlex Elder req->r_request_pgid = p; 2421e65550fdSAlex Elder p += 8 + 4; 2422e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2423e65550fdSAlex Elder 2424e65550fdSAlex Elder /* oid */ 24253c972c95SIlya Dryomov ceph_encode_32(&p, req->r_base_oid.name_len); 24263c972c95SIlya Dryomov memcpy(p, req->r_base_oid.name, req->r_base_oid.name_len); 24273c972c95SIlya Dryomov dout("oid '%.*s' len %d\n", req->r_base_oid.name_len, 24283c972c95SIlya Dryomov req->r_base_oid.name, req->r_base_oid.name_len); 24293c972c95SIlya Dryomov p += req->r_base_oid.name_len; 2430e65550fdSAlex Elder 2431e65550fdSAlex Elder /* ops--can imply data */ 2432e65550fdSAlex Elder ceph_encode_16(&p, (u16)req->r_num_ops); 2433e65550fdSAlex Elder data_len = 0; 2434e65550fdSAlex Elder for (i = 0; i < req->r_num_ops; i++) { 2435e65550fdSAlex Elder data_len += osd_req_encode_op(req, p, i); 2436e65550fdSAlex Elder p += sizeof(struct ceph_osd_op); 2437e65550fdSAlex Elder } 2438e65550fdSAlex Elder 2439e65550fdSAlex Elder /* snaps */ 2440e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapid); 2441e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 2442e65550fdSAlex Elder ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 2443e65550fdSAlex Elder if (req->r_snapc) { 2444e65550fdSAlex Elder for (i = 0; i < snapc->num_snaps; i++) { 2445e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc->snaps[i]); 2446e65550fdSAlex Elder } 2447e65550fdSAlex Elder } 2448e65550fdSAlex Elder 2449e65550fdSAlex Elder req->r_request_attempts = p; 2450e65550fdSAlex Elder p += 4; 2451e65550fdSAlex Elder 2452e65550fdSAlex Elder /* data */ 2453e65550fdSAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 2454e65550fdSAlex Elder u16 data_off; 2455e65550fdSAlex Elder 2456e65550fdSAlex Elder /* 2457e65550fdSAlex Elder * The header "data_off" is a hint to the receiver 2458e65550fdSAlex Elder * allowing it to align received data into its 2459e65550fdSAlex Elder * buffers such that there's no need to re-copy 2460e65550fdSAlex Elder * it before writing it to disk (direct I/O). 2461e65550fdSAlex Elder */ 2462e65550fdSAlex Elder data_off = (u16) (off & 0xffff); 2463e65550fdSAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 2464e65550fdSAlex Elder } 2465e65550fdSAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 2466e65550fdSAlex Elder 2467e65550fdSAlex Elder BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 2468e65550fdSAlex Elder msg_size = p - msg->front.iov_base; 2469e65550fdSAlex Elder msg->front.iov_len = msg_size; 2470e65550fdSAlex Elder msg->hdr.front_len = cpu_to_le32(msg_size); 2471e65550fdSAlex Elder 2472e65550fdSAlex Elder dout("build_request msg_size was %d\n", (int)msg_size); 2473e65550fdSAlex Elder } 2474e65550fdSAlex Elder EXPORT_SYMBOL(ceph_osdc_build_request); 2475e65550fdSAlex Elder 2476e65550fdSAlex Elder /* 24773d14c5d2SYehuda Sadeh * Register request, send initial attempt. 24783d14c5d2SYehuda Sadeh */ 24793d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 24803d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 24813d14c5d2SYehuda Sadeh bool nofail) 24823d14c5d2SYehuda Sadeh { 24830bbfdfe8SIlya Dryomov int rc; 24843d14c5d2SYehuda Sadeh 24853d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 24863d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 24870bbfdfe8SIlya Dryomov 24880bbfdfe8SIlya Dryomov rc = __ceph_osdc_start_request(osdc, req, nofail); 24890bbfdfe8SIlya Dryomov 24903d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 24913d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 24920bbfdfe8SIlya Dryomov 24933d14c5d2SYehuda Sadeh return rc; 24943d14c5d2SYehuda Sadeh } 24953d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 24963d14c5d2SYehuda Sadeh 24973d14c5d2SYehuda Sadeh /* 2498c9f9b93dSIlya Dryomov * Unregister a registered request. The request is not completed (i.e. 2499c9f9b93dSIlya Dryomov * no callbacks or wakeups) - higher layers are supposed to know what 2500c9f9b93dSIlya Dryomov * they are canceling. 2501c9f9b93dSIlya Dryomov */ 2502c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 2503c9f9b93dSIlya Dryomov { 2504c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 2505c9f9b93dSIlya Dryomov 2506c9f9b93dSIlya Dryomov mutex_lock(&osdc->request_mutex); 2507c9f9b93dSIlya Dryomov if (req->r_linger) 2508c9f9b93dSIlya Dryomov __unregister_linger_request(osdc, req); 2509c9f9b93dSIlya Dryomov __unregister_request(osdc, req); 2510c9f9b93dSIlya Dryomov mutex_unlock(&osdc->request_mutex); 2511c9f9b93dSIlya Dryomov 2512c9f9b93dSIlya Dryomov dout("%s %p tid %llu canceled\n", __func__, req, req->r_tid); 2513c9f9b93dSIlya Dryomov } 2514c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 2515c9f9b93dSIlya Dryomov 2516c9f9b93dSIlya Dryomov /* 25173d14c5d2SYehuda Sadeh * wait for a request to complete 25183d14c5d2SYehuda Sadeh */ 25193d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 25203d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 25213d14c5d2SYehuda Sadeh { 25223d14c5d2SYehuda Sadeh int rc; 25233d14c5d2SYehuda Sadeh 2524c9f9b93dSIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 2525c9f9b93dSIlya Dryomov 25263d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 25273d14c5d2SYehuda Sadeh if (rc < 0) { 2528c9f9b93dSIlya Dryomov dout("%s %p tid %llu interrupted\n", __func__, req, req->r_tid); 2529c9f9b93dSIlya Dryomov ceph_osdc_cancel_request(req); 253025845472SSage Weil complete_request(req); 25313d14c5d2SYehuda Sadeh return rc; 25323d14c5d2SYehuda Sadeh } 25333d14c5d2SYehuda Sadeh 2534c9f9b93dSIlya Dryomov dout("%s %p tid %llu result %d\n", __func__, req, req->r_tid, 2535c9f9b93dSIlya Dryomov req->r_result); 25363d14c5d2SYehuda Sadeh return req->r_result; 25373d14c5d2SYehuda Sadeh } 25383d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 25393d14c5d2SYehuda Sadeh 25403d14c5d2SYehuda Sadeh /* 25413d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 25423d14c5d2SYehuda Sadeh */ 25433d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 25443d14c5d2SYehuda Sadeh { 25453d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 25463d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 25473d14c5d2SYehuda Sadeh 25483d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 25493d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 25503d14c5d2SYehuda Sadeh while (1) { 25513d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 25523d14c5d2SYehuda Sadeh if (!req) 25533d14c5d2SYehuda Sadeh break; 25543d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 25553d14c5d2SYehuda Sadeh break; 25563d14c5d2SYehuda Sadeh 25573d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 25583d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 25593d14c5d2SYehuda Sadeh continue; 25603d14c5d2SYehuda Sadeh 25613d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 25623d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 25633d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 25643d14c5d2SYehuda Sadeh req->r_tid, last_tid); 25653d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 25663d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 25673d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 25683d14c5d2SYehuda Sadeh } 25693d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 25703d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 25713d14c5d2SYehuda Sadeh } 25723d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 25733d14c5d2SYehuda Sadeh 25743d14c5d2SYehuda Sadeh /* 2575dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 2576dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 2577dd935f44SJosh Durgin */ 2578f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 2579dd935f44SJosh Durgin { 2580dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 2581dd935f44SJosh Durgin } 2582dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 2583dd935f44SJosh Durgin 2584dd935f44SJosh Durgin 2585dd935f44SJosh Durgin /* 25863d14c5d2SYehuda Sadeh * init, shutdown 25873d14c5d2SYehuda Sadeh */ 25883d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 25893d14c5d2SYehuda Sadeh { 25903d14c5d2SYehuda Sadeh int err; 25913d14c5d2SYehuda Sadeh 25923d14c5d2SYehuda Sadeh dout("init\n"); 25933d14c5d2SYehuda Sadeh osdc->client = client; 25943d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 25953d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 25963d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 25973d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 25983d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 25993d14c5d2SYehuda Sadeh osdc->last_tid = 0; 26003d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 26013d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 26023d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 26033d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 26046f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 26056f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 2606a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 26073d14c5d2SYehuda Sadeh osdc->num_requests = 0; 26083d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 26093d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2610a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 2611a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 2612a40c4f10SYehuda Sadeh osdc->event_count = 0; 26133d14c5d2SYehuda Sadeh 26143d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 26153d14c5d2SYehuda Sadeh round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); 26163d14c5d2SYehuda Sadeh 26173d14c5d2SYehuda Sadeh err = -ENOMEM; 26183d14c5d2SYehuda Sadeh osdc->req_mempool = mempool_create_kmalloc_pool(10, 26193d14c5d2SYehuda Sadeh sizeof(struct ceph_osd_request)); 26203d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 26213d14c5d2SYehuda Sadeh goto out; 26223d14c5d2SYehuda Sadeh 2623d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2624d50b409fSSage Weil OSD_OP_FRONT_LEN, 10, true, 26253d14c5d2SYehuda Sadeh "osd_op"); 26263d14c5d2SYehuda Sadeh if (err < 0) 26273d14c5d2SYehuda Sadeh goto out_mempool; 2628d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 26293d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, 10, true, 26303d14c5d2SYehuda Sadeh "osd_op_reply"); 26313d14c5d2SYehuda Sadeh if (err < 0) 26323d14c5d2SYehuda Sadeh goto out_msgpool; 2633a40c4f10SYehuda Sadeh 2634dbcae088SDan Carpenter err = -ENOMEM; 2635a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2636dbcae088SDan Carpenter if (!osdc->notify_wq) 2637c172ec5cSIlya Dryomov goto out_msgpool_reply; 2638c172ec5cSIlya Dryomov 26393d14c5d2SYehuda Sadeh return 0; 26403d14c5d2SYehuda Sadeh 2641c172ec5cSIlya Dryomov out_msgpool_reply: 2642c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 26433d14c5d2SYehuda Sadeh out_msgpool: 26443d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 26453d14c5d2SYehuda Sadeh out_mempool: 26463d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 26473d14c5d2SYehuda Sadeh out: 26483d14c5d2SYehuda Sadeh return err; 26493d14c5d2SYehuda Sadeh } 26503d14c5d2SYehuda Sadeh 26513d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 26523d14c5d2SYehuda Sadeh { 2653a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2654a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 26553d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 26563d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 26573d14c5d2SYehuda Sadeh if (osdc->osdmap) { 26583d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 26593d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 26603d14c5d2SYehuda Sadeh } 2661aca420bcSSage Weil remove_all_osds(osdc); 26623d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 26633d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 26643d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 26653d14c5d2SYehuda Sadeh } 26663d14c5d2SYehuda Sadeh 26673d14c5d2SYehuda Sadeh /* 26683d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 26693d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 26703d14c5d2SYehuda Sadeh */ 26713d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 26723d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 26733d14c5d2SYehuda Sadeh u64 off, u64 *plen, 26743d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2675b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 26763d14c5d2SYehuda Sadeh { 26773d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 26783d14c5d2SYehuda Sadeh int rc = 0; 26793d14c5d2SYehuda Sadeh 26803d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 26813d14c5d2SYehuda Sadeh vino.snap, off, *plen); 2682715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 26833d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 2684acead002SAlex Elder NULL, truncate_seq, truncate_size, 2685153e5167SAlex Elder false); 26866816282dSSage Weil if (IS_ERR(req)) 26876816282dSSage Weil return PTR_ERR(req); 26883d14c5d2SYehuda Sadeh 26893d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 26900fff87ecSAlex Elder 2691406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 2692a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 26933d14c5d2SYehuda Sadeh 2694e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 269543bfe5deSAlex Elder off, *plen, *plen, page_align); 26963d14c5d2SYehuda Sadeh 269779528734SAlex Elder ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); 269802ee07d3SAlex Elder 26993d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 27003d14c5d2SYehuda Sadeh if (!rc) 27013d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 27023d14c5d2SYehuda Sadeh 27033d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 27043d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 27053d14c5d2SYehuda Sadeh return rc; 27063d14c5d2SYehuda Sadeh } 27073d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 27083d14c5d2SYehuda Sadeh 27093d14c5d2SYehuda Sadeh /* 27103d14c5d2SYehuda Sadeh * do a synchronous write on N pages 27113d14c5d2SYehuda Sadeh */ 27123d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 27133d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 27143d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 27153d14c5d2SYehuda Sadeh u64 off, u64 len, 27163d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 27173d14c5d2SYehuda Sadeh struct timespec *mtime, 271824808826SAlex Elder struct page **pages, int num_pages) 27193d14c5d2SYehuda Sadeh { 27203d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 27213d14c5d2SYehuda Sadeh int rc = 0; 2722b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 27233d14c5d2SYehuda Sadeh 2724acead002SAlex Elder BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ 2725715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 27263d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 272724808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2728acead002SAlex Elder snapc, truncate_seq, truncate_size, 2729153e5167SAlex Elder true); 27306816282dSSage Weil if (IS_ERR(req)) 27316816282dSSage Weil return PTR_ERR(req); 27323d14c5d2SYehuda Sadeh 27333d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 2734406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 273543bfe5deSAlex Elder false, false); 273643bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 27373d14c5d2SYehuda Sadeh 273879528734SAlex Elder ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); 273902ee07d3SAlex Elder 274087f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 27413d14c5d2SYehuda Sadeh if (!rc) 27423d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 27433d14c5d2SYehuda Sadeh 27443d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 27453d14c5d2SYehuda Sadeh if (rc == 0) 27463d14c5d2SYehuda Sadeh rc = len; 27473d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 27483d14c5d2SYehuda Sadeh return rc; 27493d14c5d2SYehuda Sadeh } 27503d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 27513d14c5d2SYehuda Sadeh 27525522ae0bSAlex Elder int ceph_osdc_setup(void) 27535522ae0bSAlex Elder { 27545522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 27555522ae0bSAlex Elder ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", 27565522ae0bSAlex Elder sizeof (struct ceph_osd_request), 27575522ae0bSAlex Elder __alignof__(struct ceph_osd_request), 27585522ae0bSAlex Elder 0, NULL); 27595522ae0bSAlex Elder 27605522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 27615522ae0bSAlex Elder } 27625522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 27635522ae0bSAlex Elder 27645522ae0bSAlex Elder void ceph_osdc_cleanup(void) 27655522ae0bSAlex Elder { 27665522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 27675522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 27685522ae0bSAlex Elder ceph_osd_request_cache = NULL; 27695522ae0bSAlex Elder } 27705522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 27715522ae0bSAlex Elder 27723d14c5d2SYehuda Sadeh /* 27733d14c5d2SYehuda Sadeh * handle incoming message 27743d14c5d2SYehuda Sadeh */ 27753d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 27763d14c5d2SYehuda Sadeh { 27773d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 27783d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 27793d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 27803d14c5d2SYehuda Sadeh 27813d14c5d2SYehuda Sadeh if (!osd) 27823d14c5d2SYehuda Sadeh goto out; 27833d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 27843d14c5d2SYehuda Sadeh 27853d14c5d2SYehuda Sadeh switch (type) { 27863d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 27873d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 27883d14c5d2SYehuda Sadeh break; 27893d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 27903d14c5d2SYehuda Sadeh handle_reply(osdc, msg, con); 27913d14c5d2SYehuda Sadeh break; 2792a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2793a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2794a40c4f10SYehuda Sadeh break; 27953d14c5d2SYehuda Sadeh 27963d14c5d2SYehuda Sadeh default: 27973d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 27983d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 27993d14c5d2SYehuda Sadeh } 28003d14c5d2SYehuda Sadeh out: 28013d14c5d2SYehuda Sadeh ceph_msg_put(msg); 28023d14c5d2SYehuda Sadeh } 28033d14c5d2SYehuda Sadeh 28043d14c5d2SYehuda Sadeh /* 28053d14c5d2SYehuda Sadeh * lookup and return message for incoming reply. set up reply message 28063d14c5d2SYehuda Sadeh * pages. 28073d14c5d2SYehuda Sadeh */ 28083d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 28093d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 28103d14c5d2SYehuda Sadeh int *skip) 28113d14c5d2SYehuda Sadeh { 28123d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28133d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 28143d14c5d2SYehuda Sadeh struct ceph_msg *m; 28153d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 28163f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 28173d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 28183d14c5d2SYehuda Sadeh u64 tid; 28193d14c5d2SYehuda Sadeh 28203d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 28213d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 28223d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 28233d14c5d2SYehuda Sadeh if (!req) { 28243d14c5d2SYehuda Sadeh *skip = 1; 28253d14c5d2SYehuda Sadeh m = NULL; 2826756a16a5SSage Weil dout("get_reply unknown tid %llu from osd%d\n", tid, 28273d14c5d2SYehuda Sadeh osd->o_osd); 28283d14c5d2SYehuda Sadeh goto out; 28293d14c5d2SYehuda Sadeh } 28303d14c5d2SYehuda Sadeh 2831ace6d3a9SAlex Elder if (req->r_reply->con) 28328921d114SAlex Elder dout("%s revoking msg %p from old con %p\n", __func__, 2833ace6d3a9SAlex Elder req->r_reply, req->r_reply->con); 28348921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 28353d14c5d2SYehuda Sadeh 2836f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 2837b9a67899SJoe Perches pr_warn("get_reply front %d > preallocated %d (%u#%llu)\n", 2838f2be82b0SIlya Dryomov front_len, req->r_reply->front_alloc_len, 28394974341eSAlex Elder (unsigned int)con->peer_name.type, 28404974341eSAlex Elder le64_to_cpu(con->peer_name.num)); 28413f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 28423f0a4ac5SIlya Dryomov false); 28433d14c5d2SYehuda Sadeh if (!m) 28443d14c5d2SYehuda Sadeh goto out; 28453d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 28463d14c5d2SYehuda Sadeh req->r_reply = m; 28473d14c5d2SYehuda Sadeh } 28483d14c5d2SYehuda Sadeh m = ceph_msg_get(req->r_reply); 28493d14c5d2SYehuda Sadeh 28503d14c5d2SYehuda Sadeh if (data_len > 0) { 2851a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 28520fff87ecSAlex Elder 2853a4ce40a9SAlex Elder /* 2854a4ce40a9SAlex Elder * XXX This is assuming there is only one op containing 2855a4ce40a9SAlex Elder * XXX page data. Probably OK for reads, but this 2856a4ce40a9SAlex Elder * XXX ought to be done more generally. 2857a4ce40a9SAlex Elder */ 2858406e2c9fSAlex Elder osd_data = osd_req_op_extent_osd_data(req, 0); 28590fff87ecSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 28600fff87ecSAlex Elder if (osd_data->pages && 2861e0c59487SAlex Elder unlikely(osd_data->length < data_len)) { 28622ac2b7a6SAlex Elder 2863b9a67899SJoe Perches pr_warn("tid %lld reply has %d bytes we had only %llu bytes ready\n", 2864e0c59487SAlex Elder tid, data_len, osd_data->length); 28653d14c5d2SYehuda Sadeh *skip = 1; 28663d14c5d2SYehuda Sadeh ceph_msg_put(m); 28673d14c5d2SYehuda Sadeh m = NULL; 28683d14c5d2SYehuda Sadeh goto out; 28693d14c5d2SYehuda Sadeh } 28703d14c5d2SYehuda Sadeh } 28712ac2b7a6SAlex Elder } 28723d14c5d2SYehuda Sadeh *skip = 0; 28733d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 28743d14c5d2SYehuda Sadeh 28753d14c5d2SYehuda Sadeh out: 28763d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 28773d14c5d2SYehuda Sadeh return m; 28783d14c5d2SYehuda Sadeh 28793d14c5d2SYehuda Sadeh } 28803d14c5d2SYehuda Sadeh 28813d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 28823d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 28833d14c5d2SYehuda Sadeh int *skip) 28843d14c5d2SYehuda Sadeh { 28853d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28863d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 28873d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 28883d14c5d2SYehuda Sadeh 28891c20f2d2SAlex Elder *skip = 0; 28903d14c5d2SYehuda Sadeh switch (type) { 28913d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2892a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2893b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 28943d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 28953d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 28963d14c5d2SYehuda Sadeh default: 28973d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 28983d14c5d2SYehuda Sadeh osd->o_osd); 28993d14c5d2SYehuda Sadeh *skip = 1; 29003d14c5d2SYehuda Sadeh return NULL; 29013d14c5d2SYehuda Sadeh } 29023d14c5d2SYehuda Sadeh } 29033d14c5d2SYehuda Sadeh 29043d14c5d2SYehuda Sadeh /* 29053d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 29063d14c5d2SYehuda Sadeh */ 29073d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 29083d14c5d2SYehuda Sadeh { 29093d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29103d14c5d2SYehuda Sadeh if (get_osd(osd)) 29113d14c5d2SYehuda Sadeh return con; 29123d14c5d2SYehuda Sadeh return NULL; 29133d14c5d2SYehuda Sadeh } 29143d14c5d2SYehuda Sadeh 29153d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 29163d14c5d2SYehuda Sadeh { 29173d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29183d14c5d2SYehuda Sadeh put_osd(osd); 29193d14c5d2SYehuda Sadeh } 29203d14c5d2SYehuda Sadeh 29213d14c5d2SYehuda Sadeh /* 29223d14c5d2SYehuda Sadeh * authentication 29233d14c5d2SYehuda Sadeh */ 2924a3530df3SAlex Elder /* 2925a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2926a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2927a3530df3SAlex Elder */ 2928a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 29298f43fb53SAlex Elder int *proto, int force_new) 29303d14c5d2SYehuda Sadeh { 29313d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 29323d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 29333d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 293474f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 29353d14c5d2SYehuda Sadeh 293674f1869fSAlex Elder if (force_new && auth->authorizer) { 293727859f97SSage Weil ceph_auth_destroy_authorizer(ac, auth->authorizer); 293874f1869fSAlex Elder auth->authorizer = NULL; 29393d14c5d2SYehuda Sadeh } 294027859f97SSage Weil if (!auth->authorizer) { 294127859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2942a3530df3SAlex Elder auth); 29433d14c5d2SYehuda Sadeh if (ret) 2944a3530df3SAlex Elder return ERR_PTR(ret); 294527859f97SSage Weil } else { 294627859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 29470bed9b5cSSage Weil auth); 29480bed9b5cSSage Weil if (ret) 29490bed9b5cSSage Weil return ERR_PTR(ret); 29503d14c5d2SYehuda Sadeh } 29513d14c5d2SYehuda Sadeh *proto = ac->protocol; 295274f1869fSAlex Elder 2953a3530df3SAlex Elder return auth; 29543d14c5d2SYehuda Sadeh } 29553d14c5d2SYehuda Sadeh 29563d14c5d2SYehuda Sadeh 29573d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 29583d14c5d2SYehuda Sadeh { 29593d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 29603d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 29613d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 29623d14c5d2SYehuda Sadeh 296327859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 29643d14c5d2SYehuda Sadeh } 29653d14c5d2SYehuda Sadeh 29663d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 29673d14c5d2SYehuda Sadeh { 29683d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 29693d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 29703d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 29713d14c5d2SYehuda Sadeh 297227859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 29733d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 29743d14c5d2SYehuda Sadeh } 29753d14c5d2SYehuda Sadeh 297633d07337SYan, Zheng static int sign_message(struct ceph_connection *con, struct ceph_msg *msg) 297733d07337SYan, Zheng { 297833d07337SYan, Zheng struct ceph_osd *o = con->private; 297933d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 298033d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 298133d07337SYan, Zheng } 298233d07337SYan, Zheng 298333d07337SYan, Zheng static int check_message_signature(struct ceph_connection *con, struct ceph_msg *msg) 298433d07337SYan, Zheng { 298533d07337SYan, Zheng struct ceph_osd *o = con->private; 298633d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 298733d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 298833d07337SYan, Zheng } 298933d07337SYan, Zheng 29903d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 29913d14c5d2SYehuda Sadeh .get = get_osd_con, 29923d14c5d2SYehuda Sadeh .put = put_osd_con, 29933d14c5d2SYehuda Sadeh .dispatch = dispatch, 29943d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 29953d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 29963d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 29973d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 299833d07337SYan, Zheng .sign_message = sign_message, 299933d07337SYan, Zheng .check_message_signature = check_message_signature, 30003d14c5d2SYehuda Sadeh .fault = osd_reset, 30013d14c5d2SYehuda Sadeh }; 3002