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 ({ \ 1258a703a38SIoana Ciornei struct ceph_osd_request *__oreq = (oreq); \ 1268a703a38SIoana Ciornei unsigned int __whch = (whch); \ 1278a703a38SIoana Ciornei BUG_ON(__whch >= __oreq->r_num_ops); \ 1288a703a38SIoana Ciornei &__oreq->r_ops[__whch].typ.fld; \ 129863c7eb5SAlex Elder }) 130863c7eb5SAlex Elder 13149719778SAlex Elder static struct ceph_osd_data * 13249719778SAlex Elder osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) 13349719778SAlex Elder { 13449719778SAlex Elder BUG_ON(which >= osd_req->r_num_ops); 13549719778SAlex Elder 13649719778SAlex Elder return &osd_req->r_ops[which].raw_data_in; 13749719778SAlex Elder } 13849719778SAlex Elder 139a4ce40a9SAlex Elder struct ceph_osd_data * 140a4ce40a9SAlex Elder osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, 141406e2c9fSAlex Elder unsigned int which) 142a4ce40a9SAlex Elder { 143863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, extent, osd_data); 144a4ce40a9SAlex Elder } 145a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data); 146a4ce40a9SAlex Elder 147a4ce40a9SAlex Elder struct ceph_osd_data * 148a4ce40a9SAlex Elder osd_req_op_cls_response_data(struct ceph_osd_request *osd_req, 149a4ce40a9SAlex Elder unsigned int which) 150a4ce40a9SAlex Elder { 151863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, cls, response_data); 152a4ce40a9SAlex Elder } 153a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data); /* ??? */ 154a4ce40a9SAlex Elder 15549719778SAlex Elder void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, 15649719778SAlex Elder unsigned int which, struct page **pages, 15749719778SAlex Elder u64 length, u32 alignment, 15849719778SAlex Elder bool pages_from_pool, bool own_pages) 15949719778SAlex Elder { 16049719778SAlex Elder struct ceph_osd_data *osd_data; 16149719778SAlex Elder 16249719778SAlex Elder osd_data = osd_req_op_raw_data_in(osd_req, which); 16349719778SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 16449719778SAlex Elder pages_from_pool, own_pages); 16549719778SAlex Elder } 16649719778SAlex Elder EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); 16749719778SAlex Elder 168a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, 169406e2c9fSAlex Elder unsigned int which, struct page **pages, 170406e2c9fSAlex Elder u64 length, u32 alignment, 171a4ce40a9SAlex Elder bool pages_from_pool, bool own_pages) 172a4ce40a9SAlex Elder { 173a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 174a4ce40a9SAlex Elder 175863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 176a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 177a4ce40a9SAlex Elder pages_from_pool, own_pages); 178a4ce40a9SAlex Elder } 179a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); 180a4ce40a9SAlex Elder 181a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, 182406e2c9fSAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 183a4ce40a9SAlex Elder { 184a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 185a4ce40a9SAlex Elder 186863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 187a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 188a4ce40a9SAlex Elder } 189a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); 190a4ce40a9SAlex Elder 191a4ce40a9SAlex Elder #ifdef CONFIG_BLOCK 192a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, 193406e2c9fSAlex Elder unsigned int which, struct bio *bio, size_t bio_length) 194a4ce40a9SAlex Elder { 195a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 196863c7eb5SAlex Elder 197863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 198a4ce40a9SAlex Elder ceph_osd_data_bio_init(osd_data, bio, bio_length); 199a4ce40a9SAlex Elder } 200a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); 201a4ce40a9SAlex Elder #endif /* CONFIG_BLOCK */ 202a4ce40a9SAlex Elder 203a4ce40a9SAlex Elder static void osd_req_op_cls_request_info_pagelist( 204a4ce40a9SAlex Elder struct ceph_osd_request *osd_req, 205a4ce40a9SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 206a4ce40a9SAlex Elder { 207a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 208a4ce40a9SAlex Elder 209863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_info); 210a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 211a4ce40a9SAlex Elder } 212a4ce40a9SAlex Elder 21304017e29SAlex Elder void osd_req_op_cls_request_data_pagelist( 21404017e29SAlex Elder struct ceph_osd_request *osd_req, 21504017e29SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 21604017e29SAlex Elder { 21704017e29SAlex Elder struct ceph_osd_data *osd_data; 21804017e29SAlex Elder 219863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 22004017e29SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 22104017e29SAlex Elder } 22204017e29SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); 22304017e29SAlex Elder 2246c57b554SAlex Elder void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, 2256c57b554SAlex Elder unsigned int which, struct page **pages, u64 length, 2266c57b554SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 2276c57b554SAlex Elder { 2286c57b554SAlex Elder struct ceph_osd_data *osd_data; 2296c57b554SAlex Elder 2306c57b554SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 2316c57b554SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 2326c57b554SAlex Elder pages_from_pool, own_pages); 2336c57b554SAlex Elder } 2346c57b554SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); 2356c57b554SAlex Elder 236a4ce40a9SAlex Elder void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, 237a4ce40a9SAlex Elder unsigned int which, struct page **pages, u64 length, 238a4ce40a9SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 239a4ce40a9SAlex Elder { 240a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 241a4ce40a9SAlex Elder 242863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, response_data); 243a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 244a4ce40a9SAlex Elder pages_from_pool, own_pages); 245a4ce40a9SAlex Elder } 246a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); 247a4ce40a9SAlex Elder 24823c08a9cSAlex Elder static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) 24923c08a9cSAlex Elder { 25023c08a9cSAlex Elder switch (osd_data->type) { 25123c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_NONE: 25223c08a9cSAlex Elder return 0; 25323c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGES: 25423c08a9cSAlex Elder return osd_data->length; 25523c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGELIST: 25623c08a9cSAlex Elder return (u64)osd_data->pagelist->length; 25723c08a9cSAlex Elder #ifdef CONFIG_BLOCK 25823c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_BIO: 25923c08a9cSAlex Elder return (u64)osd_data->bio_length; 26023c08a9cSAlex Elder #endif /* CONFIG_BLOCK */ 26123c08a9cSAlex Elder default: 26223c08a9cSAlex Elder WARN(true, "unrecognized data type %d\n", (int)osd_data->type); 26323c08a9cSAlex Elder return 0; 26423c08a9cSAlex Elder } 26523c08a9cSAlex Elder } 26623c08a9cSAlex Elder 267c54d47bfSAlex Elder static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 268c54d47bfSAlex Elder { 2695476492fSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { 270c54d47bfSAlex Elder int num_pages; 271c54d47bfSAlex Elder 272c54d47bfSAlex Elder num_pages = calc_pages_for((u64)osd_data->alignment, 273c54d47bfSAlex Elder (u64)osd_data->length); 274c54d47bfSAlex Elder ceph_release_page_vector(osd_data->pages, num_pages); 275c54d47bfSAlex Elder } 2765476492fSAlex Elder ceph_osd_data_init(osd_data); 2775476492fSAlex Elder } 2785476492fSAlex Elder 2795476492fSAlex Elder static void osd_req_op_data_release(struct ceph_osd_request *osd_req, 2805476492fSAlex Elder unsigned int which) 2815476492fSAlex Elder { 2825476492fSAlex Elder struct ceph_osd_req_op *op; 2835476492fSAlex Elder 2845476492fSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 2855476492fSAlex Elder op = &osd_req->r_ops[which]; 2865476492fSAlex Elder 2875476492fSAlex Elder switch (op->op) { 2885476492fSAlex Elder case CEPH_OSD_OP_READ: 2895476492fSAlex Elder case CEPH_OSD_OP_WRITE: 290e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 2915476492fSAlex Elder ceph_osd_data_release(&op->extent.osd_data); 2925476492fSAlex Elder break; 2935476492fSAlex Elder case CEPH_OSD_OP_CALL: 2945476492fSAlex Elder ceph_osd_data_release(&op->cls.request_info); 29504017e29SAlex Elder ceph_osd_data_release(&op->cls.request_data); 2965476492fSAlex Elder ceph_osd_data_release(&op->cls.response_data); 2975476492fSAlex Elder break; 298d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 299d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 300d74b50beSYan, Zheng ceph_osd_data_release(&op->xattr.osd_data); 301d74b50beSYan, Zheng break; 30266ba609fSYan, Zheng case CEPH_OSD_OP_STAT: 30366ba609fSYan, Zheng ceph_osd_data_release(&op->raw_data_in); 30466ba609fSYan, Zheng break; 3055476492fSAlex Elder default: 3065476492fSAlex Elder break; 3075476492fSAlex Elder } 308c54d47bfSAlex Elder } 309c54d47bfSAlex Elder 3103d14c5d2SYehuda Sadeh /* 3113d14c5d2SYehuda Sadeh * requests 3123d14c5d2SYehuda Sadeh */ 3139e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 3143d14c5d2SYehuda Sadeh { 3159e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 3169e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 3175476492fSAlex Elder unsigned int which; 3183d14c5d2SYehuda Sadeh 3199e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 3209e94af20SIlya Dryomov req->r_request, req->r_reply); 3216562d661SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 3226562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_req_lru_item)); 3236562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_osd_item)); 3246562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_linger_item)); 3256562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_linger_osd_item)); 3266562d661SIlya Dryomov WARN_ON(req->r_osd); 3279e94af20SIlya Dryomov 3283d14c5d2SYehuda Sadeh if (req->r_request) 3293d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 330ace6d3a9SAlex Elder if (req->r_reply) { 3318921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 332ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 333ace6d3a9SAlex Elder } 3340fff87ecSAlex Elder 3355476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 3365476492fSAlex Elder osd_req_op_data_release(req, which); 3370fff87ecSAlex Elder 3383d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 3393d14c5d2SYehuda Sadeh if (req->r_mempool) 3403d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 3413d14c5d2SYehuda Sadeh else 3425522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 3435522ae0bSAlex Elder 3443d14c5d2SYehuda Sadeh } 3459e94af20SIlya Dryomov 3469e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 3479e94af20SIlya Dryomov { 3489e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3499e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3509e94af20SIlya Dryomov kref_get(&req->r_kref); 3519e94af20SIlya Dryomov } 3529e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 3539e94af20SIlya Dryomov 3549e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 3559e94af20SIlya Dryomov { 3569e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3579e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3589e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 3599e94af20SIlya Dryomov } 3609e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 3613d14c5d2SYehuda Sadeh 3623d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 3633d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 3641b83bef2SSage Weil unsigned int num_ops, 3653d14c5d2SYehuda Sadeh bool use_mempool, 36654a54007SAlex Elder gfp_t gfp_flags) 3673d14c5d2SYehuda Sadeh { 3683d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 3693d14c5d2SYehuda Sadeh struct ceph_msg *msg; 3701b83bef2SSage Weil size_t msg_size; 3713d14c5d2SYehuda Sadeh 37279528734SAlex Elder BUILD_BUG_ON(CEPH_OSD_MAX_OP > U16_MAX); 37379528734SAlex Elder BUG_ON(num_ops > CEPH_OSD_MAX_OP); 37479528734SAlex Elder 3753d14c5d2SYehuda Sadeh if (use_mempool) { 3763d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 3773d14c5d2SYehuda Sadeh memset(req, 0, sizeof(*req)); 3783d14c5d2SYehuda Sadeh } else { 3795522ae0bSAlex Elder req = kmem_cache_zalloc(ceph_osd_request_cache, gfp_flags); 3803d14c5d2SYehuda Sadeh } 3813d14c5d2SYehuda Sadeh if (req == NULL) 3823d14c5d2SYehuda Sadeh return NULL; 3833d14c5d2SYehuda Sadeh 3843d14c5d2SYehuda Sadeh req->r_osdc = osdc; 3853d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 38679528734SAlex Elder req->r_num_ops = num_ops; 3873d14c5d2SYehuda Sadeh 3883d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 3893d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 3903d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 391a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 3923d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 393a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 3941d0326b1SIlya Dryomov INIT_LIST_HEAD(&req->r_linger_osd_item); 395935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 396cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 397cd43045cSSage Weil 3983c972c95SIlya Dryomov req->r_base_oloc.pool = -1; 399205ee118SIlya Dryomov req->r_target_oloc.pool = -1; 40022116525SIlya Dryomov 4013d14c5d2SYehuda Sadeh /* create reply message */ 4023d14c5d2SYehuda Sadeh if (use_mempool) 4033d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 4043d14c5d2SYehuda Sadeh else 4053d14c5d2SYehuda Sadeh msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, 406b61c2763SSage Weil OSD_OPREPLY_FRONT_LEN, gfp_flags, true); 4073d14c5d2SYehuda Sadeh if (!msg) { 4083d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 4093d14c5d2SYehuda Sadeh return NULL; 4103d14c5d2SYehuda Sadeh } 4113d14c5d2SYehuda Sadeh req->r_reply = msg; 4123d14c5d2SYehuda Sadeh 413ae458f5aSIlya Dryomov msg_size = 4 + 4 + 4; /* client_inc, osdmap_epoch, flags */ 414ae458f5aSIlya Dryomov msg_size += 4 + 4 + 4 + 8; /* mtime, reassert_version */ 415ae458f5aSIlya Dryomov msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 416ae458f5aSIlya Dryomov msg_size += 1 + 8 + 4 + 4; /* pgid */ 417ae458f5aSIlya Dryomov msg_size += 4 + CEPH_MAX_OID_NAME_LEN; /* oid */ 418ae458f5aSIlya Dryomov msg_size += 2 + num_ops * sizeof(struct ceph_osd_op); 419ae458f5aSIlya Dryomov msg_size += 8; /* snapid */ 420ae458f5aSIlya Dryomov msg_size += 8; /* snap_seq */ 421ae458f5aSIlya Dryomov msg_size += 4 + 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ 422ae458f5aSIlya Dryomov msg_size += 4; /* retry_attempt */ 423ae458f5aSIlya Dryomov 4243d14c5d2SYehuda Sadeh /* create request message; allow space for oid */ 4253d14c5d2SYehuda Sadeh if (use_mempool) 4263d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 4273d14c5d2SYehuda Sadeh else 428b61c2763SSage Weil msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); 4293d14c5d2SYehuda Sadeh if (!msg) { 4303d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 4313d14c5d2SYehuda Sadeh return NULL; 4323d14c5d2SYehuda Sadeh } 4333d14c5d2SYehuda Sadeh 4343d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 4353d14c5d2SYehuda Sadeh 4363d14c5d2SYehuda Sadeh req->r_request = msg; 4373d14c5d2SYehuda Sadeh 4383d14c5d2SYehuda Sadeh return req; 4393d14c5d2SYehuda Sadeh } 4403d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_alloc_request); 4413d14c5d2SYehuda Sadeh 442a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 443a8dd0a37SAlex Elder { 444a8dd0a37SAlex Elder switch (opcode) { 44570b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 44670b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 44770b5bfa3SIlya Dryomov #undef GENERATE_CASE 448a8dd0a37SAlex Elder default: 449a8dd0a37SAlex Elder return false; 450a8dd0a37SAlex Elder } 451a8dd0a37SAlex Elder } 452a8dd0a37SAlex Elder 45333803f33SAlex Elder /* 45433803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 45533803f33SAlex Elder * other information associated with them. It also serves as a 45633803f33SAlex Elder * common init routine for all the other init functions, below. 45733803f33SAlex Elder */ 458c99d2d4aSAlex Elder static struct ceph_osd_req_op * 45949719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 460144cba14SYan, Zheng u16 opcode, u32 flags) 46133803f33SAlex Elder { 462c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 463c99d2d4aSAlex Elder 464c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 46533803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 46633803f33SAlex Elder 467c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 46833803f33SAlex Elder memset(op, 0, sizeof (*op)); 46933803f33SAlex Elder op->op = opcode; 470144cba14SYan, Zheng op->flags = flags; 471c99d2d4aSAlex Elder 472c99d2d4aSAlex Elder return op; 47333803f33SAlex Elder } 47433803f33SAlex Elder 47549719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 476144cba14SYan, Zheng unsigned int which, u16 opcode, u32 flags) 47749719778SAlex Elder { 478144cba14SYan, Zheng (void)_osd_req_op_init(osd_req, which, opcode, flags); 47949719778SAlex Elder } 48049719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 48149719778SAlex Elder 482c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 483c99d2d4aSAlex Elder unsigned int which, u16 opcode, 48433803f33SAlex Elder u64 offset, u64 length, 48533803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 48633803f33SAlex Elder { 487144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 488144cba14SYan, Zheng opcode, 0); 48933803f33SAlex Elder size_t payload_len = 0; 49033803f33SAlex Elder 491ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 492e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_WRITEFULL && opcode != CEPH_OSD_OP_ZERO && 493e30b7577SIlya Dryomov opcode != CEPH_OSD_OP_TRUNCATE); 49433803f33SAlex Elder 49533803f33SAlex Elder op->extent.offset = offset; 49633803f33SAlex Elder op->extent.length = length; 49733803f33SAlex Elder op->extent.truncate_size = truncate_size; 49833803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 499e30b7577SIlya Dryomov if (opcode == CEPH_OSD_OP_WRITE || opcode == CEPH_OSD_OP_WRITEFULL) 50033803f33SAlex Elder payload_len += length; 50133803f33SAlex Elder 502de2aa102SIlya Dryomov op->indata_len = payload_len; 50333803f33SAlex Elder } 50433803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 50533803f33SAlex Elder 506c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 507c99d2d4aSAlex Elder unsigned int which, u64 length) 508e5975c7cSAlex Elder { 509c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 510c99d2d4aSAlex Elder u64 previous; 511c99d2d4aSAlex Elder 512c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 513c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 514c99d2d4aSAlex Elder previous = op->extent.length; 515e5975c7cSAlex Elder 516e5975c7cSAlex Elder if (length == previous) 517e5975c7cSAlex Elder return; /* Nothing to do */ 518e5975c7cSAlex Elder BUG_ON(length > previous); 519e5975c7cSAlex Elder 520e5975c7cSAlex Elder op->extent.length = length; 521de2aa102SIlya Dryomov op->indata_len -= previous - length; 522e5975c7cSAlex Elder } 523e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 524e5975c7cSAlex Elder 525c99d2d4aSAlex Elder void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 52604017e29SAlex Elder u16 opcode, const char *class, const char *method) 52733803f33SAlex Elder { 528144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 529144cba14SYan, Zheng opcode, 0); 5305f562df5SAlex Elder struct ceph_pagelist *pagelist; 53133803f33SAlex Elder size_t payload_len = 0; 53233803f33SAlex Elder size_t size; 53333803f33SAlex Elder 53433803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 53533803f33SAlex Elder 5365f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 5375f562df5SAlex Elder BUG_ON(!pagelist); 5385f562df5SAlex Elder ceph_pagelist_init(pagelist); 5395f562df5SAlex Elder 54033803f33SAlex Elder op->cls.class_name = class; 54133803f33SAlex Elder size = strlen(class); 54233803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 54333803f33SAlex Elder op->cls.class_len = size; 5445f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 54533803f33SAlex Elder payload_len += size; 54633803f33SAlex Elder 54733803f33SAlex Elder op->cls.method_name = method; 54833803f33SAlex Elder size = strlen(method); 54933803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 55033803f33SAlex Elder op->cls.method_len = size; 5515f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 55233803f33SAlex Elder payload_len += size; 55333803f33SAlex Elder 554a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 5555f562df5SAlex Elder 55633803f33SAlex Elder op->cls.argc = 0; /* currently unused */ 55733803f33SAlex Elder 558de2aa102SIlya Dryomov op->indata_len = payload_len; 55933803f33SAlex Elder } 56033803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 5618c042b0dSAlex Elder 562d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 563d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 564d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 565d74b50beSYan, Zheng { 566144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 567144cba14SYan, Zheng opcode, 0); 568d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 569d74b50beSYan, Zheng size_t payload_len; 570d74b50beSYan, Zheng 571d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 572d74b50beSYan, Zheng 573d74b50beSYan, Zheng pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); 574d74b50beSYan, Zheng if (!pagelist) 575d74b50beSYan, Zheng return -ENOMEM; 576d74b50beSYan, Zheng 577d74b50beSYan, Zheng ceph_pagelist_init(pagelist); 578d74b50beSYan, Zheng 579d74b50beSYan, Zheng payload_len = strlen(name); 580d74b50beSYan, Zheng op->xattr.name_len = payload_len; 581d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 582d74b50beSYan, Zheng 583d74b50beSYan, Zheng op->xattr.value_len = size; 584d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 585d74b50beSYan, Zheng payload_len += size; 586d74b50beSYan, Zheng 587d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 588d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 589d74b50beSYan, Zheng 590d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 591de2aa102SIlya Dryomov op->indata_len = payload_len; 592d74b50beSYan, Zheng return 0; 593d74b50beSYan, Zheng } 594d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 595d74b50beSYan, Zheng 596c99d2d4aSAlex Elder void osd_req_op_watch_init(struct ceph_osd_request *osd_req, 597c99d2d4aSAlex Elder unsigned int which, u16 opcode, 59833803f33SAlex Elder u64 cookie, u64 version, int flag) 59933803f33SAlex Elder { 600144cba14SYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 601144cba14SYan, Zheng opcode, 0); 60233803f33SAlex Elder 603c99d2d4aSAlex Elder BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 60433803f33SAlex Elder 60533803f33SAlex Elder op->watch.cookie = cookie; 6069ef1ee5aSAlex Elder op->watch.ver = version; 60733803f33SAlex Elder if (opcode == CEPH_OSD_OP_WATCH && flag) 60833803f33SAlex Elder op->watch.flag = (u8)1; 60933803f33SAlex Elder } 61033803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_watch_init); 61133803f33SAlex Elder 612c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 613c647b8a8SIlya Dryomov unsigned int which, 614c647b8a8SIlya Dryomov u64 expected_object_size, 615c647b8a8SIlya Dryomov u64 expected_write_size) 616c647b8a8SIlya Dryomov { 617c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 618144cba14SYan, Zheng CEPH_OSD_OP_SETALLOCHINT, 619144cba14SYan, Zheng 0); 620c647b8a8SIlya Dryomov 621c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 622c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 623c647b8a8SIlya Dryomov 624c647b8a8SIlya Dryomov /* 625c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 626c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 627c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 628c647b8a8SIlya Dryomov */ 629c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 630c647b8a8SIlya Dryomov } 631c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 632c647b8a8SIlya Dryomov 63390af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 634ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 635ec9123c5SAlex Elder { 636ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 637ec9123c5SAlex Elder 638ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 639ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 640ec9123c5SAlex Elder if (length) 64190af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 642ec9123c5SAlex Elder length, osd_data->alignment); 643ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 644ec9123c5SAlex Elder BUG_ON(!length); 64590af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 646ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 647ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 64890af3602SAlex Elder ceph_msg_data_add_bio(msg, osd_data->bio, length); 649ec9123c5SAlex Elder #endif 650ec9123c5SAlex Elder } else { 651ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 652ec9123c5SAlex Elder } 653ec9123c5SAlex Elder } 654ec9123c5SAlex Elder 655175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 65679528734SAlex Elder struct ceph_osd_op *dst, unsigned int which) 6573d14c5d2SYehuda Sadeh { 65879528734SAlex Elder struct ceph_osd_req_op *src; 65904017e29SAlex Elder struct ceph_osd_data *osd_data; 66054d50649SAlex Elder u64 request_data_len = 0; 66104017e29SAlex Elder u64 data_length; 662175face2SAlex Elder 66379528734SAlex Elder BUG_ON(which >= req->r_num_ops); 66479528734SAlex Elder src = &req->r_ops[which]; 665a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 666a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 667a8dd0a37SAlex Elder 668a8dd0a37SAlex Elder return 0; 669a8dd0a37SAlex Elder } 6703d14c5d2SYehuda Sadeh 671065a68f9SAlex Elder switch (src->op) { 672fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 67349719778SAlex Elder osd_data = &src->raw_data_in; 67449719778SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 675fbfab539SAlex Elder break; 6763d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 6773d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 678e30b7577SIlya Dryomov case CEPH_OSD_OP_WRITEFULL: 679ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 680ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 681e30b7577SIlya Dryomov if (src->op == CEPH_OSD_OP_WRITE || 682e30b7577SIlya Dryomov src->op == CEPH_OSD_OP_WRITEFULL) 68354d50649SAlex Elder request_data_len = src->extent.length; 684175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 685175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 6863d14c5d2SYehuda Sadeh dst->extent.truncate_size = 6873d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 6883d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 6893d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 69004017e29SAlex Elder osd_data = &src->extent.osd_data; 691e30b7577SIlya Dryomov if (src->op == CEPH_OSD_OP_WRITE || 692e30b7577SIlya Dryomov src->op == CEPH_OSD_OP_WRITEFULL) 69304017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 6945476492fSAlex Elder else 69504017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 6963d14c5d2SYehuda Sadeh break; 6973d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 6983d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 6993d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 70004017e29SAlex Elder osd_data = &src->cls.request_info; 70104017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 70204017e29SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); 70304017e29SAlex Elder request_data_len = osd_data->pagelist->length; 70404017e29SAlex Elder 70504017e29SAlex Elder osd_data = &src->cls.request_data; 70604017e29SAlex Elder data_length = ceph_osd_data_length(osd_data); 70704017e29SAlex Elder if (data_length) { 70804017e29SAlex Elder BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); 70904017e29SAlex Elder dst->cls.indata_len = cpu_to_le32(data_length); 71004017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 711de2aa102SIlya Dryomov src->indata_len += data_length; 71204017e29SAlex Elder request_data_len += data_length; 71304017e29SAlex Elder } 71404017e29SAlex Elder osd_data = &src->cls.response_data; 71504017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 7163d14c5d2SYehuda Sadeh break; 7173d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 7183d14c5d2SYehuda Sadeh break; 719a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 720a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 721a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 722a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 723a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 724a40c4f10SYehuda Sadeh break; 725c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 726c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 727c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 728c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 729c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 730c647b8a8SIlya Dryomov break; 731d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 732d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 733d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 734d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 735d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 736d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 737d74b50beSYan, Zheng osd_data = &src->xattr.osd_data; 738d74b50beSYan, Zheng ceph_osdc_msg_data_add(req->r_request, osd_data); 739d74b50beSYan, Zheng request_data_len = osd_data->pagelist->length; 740d74b50beSYan, Zheng break; 741864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 742864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 743864e9197SYan, Zheng break; 7443d14c5d2SYehuda Sadeh default: 7454c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 7468f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 7474c46459cSAlex Elder WARN_ON(1); 748a8dd0a37SAlex Elder 749a8dd0a37SAlex Elder return 0; 7503d14c5d2SYehuda Sadeh } 7517b25bf5fSIlya Dryomov 752a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 7537b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 754de2aa102SIlya Dryomov dst->payload_len = cpu_to_le32(src->indata_len); 755175face2SAlex Elder 75654d50649SAlex Elder return request_data_len; 7573d14c5d2SYehuda Sadeh } 7583d14c5d2SYehuda Sadeh 7593d14c5d2SYehuda Sadeh /* 7603d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 7613d14c5d2SYehuda Sadeh * extent as needed. 7623d14c5d2SYehuda Sadeh * 7633d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 7643d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 7653d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 7663d14c5d2SYehuda Sadeh * 7673d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 7683d14c5d2SYehuda Sadeh * data quickly. 7693d14c5d2SYehuda Sadeh */ 7703d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 7713d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 7723d14c5d2SYehuda Sadeh struct ceph_vino vino, 773715e4cd4SYan, Zheng u64 off, u64 *plen, 774715e4cd4SYan, Zheng unsigned int which, int num_ops, 7753d14c5d2SYehuda Sadeh int opcode, int flags, 7763d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 7773d14c5d2SYehuda Sadeh u32 truncate_seq, 7783d14c5d2SYehuda Sadeh u64 truncate_size, 779153e5167SAlex Elder bool use_mempool) 7803d14c5d2SYehuda Sadeh { 7813d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 78275d1c941SAlex Elder u64 objnum = 0; 78375d1c941SAlex Elder u64 objoff = 0; 78475d1c941SAlex Elder u64 objlen = 0; 7856816282dSSage Weil int r; 7863d14c5d2SYehuda Sadeh 787ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 788864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 789864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 7903d14c5d2SYehuda Sadeh 791acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 792ae7ca4a3SAlex Elder GFP_NOFS); 7934ad12621SSage Weil if (!req) 7946816282dSSage Weil return ERR_PTR(-ENOMEM); 79579528734SAlex Elder 796d178a9e7SAlex Elder req->r_flags = flags; 7973d14c5d2SYehuda Sadeh 7983d14c5d2SYehuda Sadeh /* calculate max write size */ 799a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 8003ff5f385SAlex Elder if (r < 0) { 8013ff5f385SAlex Elder ceph_osdc_put_request(req); 8026816282dSSage Weil return ERR_PTR(r); 8033ff5f385SAlex Elder } 804a19dadfbSAlex Elder 805864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 806144cba14SYan, Zheng osd_req_op_init(req, which, opcode, 0); 807864e9197SYan, Zheng } else { 808864e9197SYan, Zheng u32 object_size = le32_to_cpu(layout->fl_object_size); 809864e9197SYan, Zheng u32 object_base = off - objoff; 810ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 811d18d1e28SAlex Elder if (truncate_size <= object_base) { 812d18d1e28SAlex Elder truncate_size = 0; 813d18d1e28SAlex Elder } else { 814d18d1e28SAlex Elder truncate_size -= object_base; 815d18d1e28SAlex Elder if (truncate_size > object_size) 816d18d1e28SAlex Elder truncate_size = object_size; 817d18d1e28SAlex Elder } 818ccca4e37SYan, Zheng } 819715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 820b0270324SAlex Elder truncate_size, truncate_seq); 821864e9197SYan, Zheng } 822d18d1e28SAlex Elder 8233c972c95SIlya Dryomov req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); 8243d14c5d2SYehuda Sadeh 8253c972c95SIlya Dryomov snprintf(req->r_base_oid.name, sizeof(req->r_base_oid.name), 8264295f221SIlya Dryomov "%llx.%08llx", vino.ino, objnum); 8273c972c95SIlya Dryomov req->r_base_oid.name_len = strlen(req->r_base_oid.name); 828dbe0fc41SAlex Elder 8293d14c5d2SYehuda Sadeh return req; 8303d14c5d2SYehuda Sadeh } 8313d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 8323d14c5d2SYehuda Sadeh 8333d14c5d2SYehuda Sadeh /* 8343d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 8353d14c5d2SYehuda Sadeh */ 8363d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 8373d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 8383d14c5d2SYehuda Sadeh { 8393d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 8403d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 8413d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 8423d14c5d2SYehuda Sadeh 8433d14c5d2SYehuda Sadeh while (*p) { 8443d14c5d2SYehuda Sadeh parent = *p; 8453d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 8463d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 8473d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 8483d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 8493d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 8503d14c5d2SYehuda Sadeh else 8513d14c5d2SYehuda Sadeh BUG(); 8523d14c5d2SYehuda Sadeh } 8533d14c5d2SYehuda Sadeh 8543d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 8553d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 8563d14c5d2SYehuda Sadeh } 8573d14c5d2SYehuda Sadeh 8583d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 8593d14c5d2SYehuda Sadeh u64 tid) 8603d14c5d2SYehuda Sadeh { 8613d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 8623d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 8633d14c5d2SYehuda Sadeh 8643d14c5d2SYehuda Sadeh while (n) { 8653d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 8663d14c5d2SYehuda Sadeh if (tid < req->r_tid) 8673d14c5d2SYehuda Sadeh n = n->rb_left; 8683d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 8693d14c5d2SYehuda Sadeh n = n->rb_right; 8703d14c5d2SYehuda Sadeh else 8713d14c5d2SYehuda Sadeh return req; 8723d14c5d2SYehuda Sadeh } 8733d14c5d2SYehuda Sadeh return NULL; 8743d14c5d2SYehuda Sadeh } 8753d14c5d2SYehuda Sadeh 8763d14c5d2SYehuda Sadeh static struct ceph_osd_request * 8773d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 8783d14c5d2SYehuda Sadeh u64 tid) 8793d14c5d2SYehuda Sadeh { 8803d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 8813d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 8823d14c5d2SYehuda Sadeh 8833d14c5d2SYehuda Sadeh while (n) { 8843d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 8853d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 8863d14c5d2SYehuda Sadeh if (!n->rb_left) 8873d14c5d2SYehuda Sadeh return req; 8883d14c5d2SYehuda Sadeh n = n->rb_left; 8893d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 8903d14c5d2SYehuda Sadeh n = n->rb_right; 8913d14c5d2SYehuda Sadeh } else { 8923d14c5d2SYehuda Sadeh return req; 8933d14c5d2SYehuda Sadeh } 8943d14c5d2SYehuda Sadeh } 8953d14c5d2SYehuda Sadeh return NULL; 8963d14c5d2SYehuda Sadeh } 8973d14c5d2SYehuda Sadeh 8982cc6128aSIlya Dryomov static void __kick_linger_request(struct ceph_osd_request *req) 8992cc6128aSIlya Dryomov { 9002cc6128aSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 9012cc6128aSIlya Dryomov struct ceph_osd *osd = req->r_osd; 9022cc6128aSIlya Dryomov 9032cc6128aSIlya Dryomov /* 9042cc6128aSIlya Dryomov * Linger requests need to be resent with a new tid to avoid 9052cc6128aSIlya Dryomov * the dup op detection logic on the OSDs. Achieve this with 9062cc6128aSIlya Dryomov * a re-register dance instead of open-coding. 9072cc6128aSIlya Dryomov */ 9082cc6128aSIlya Dryomov ceph_osdc_get_request(req); 9092cc6128aSIlya Dryomov if (!list_empty(&req->r_linger_item)) 9102cc6128aSIlya Dryomov __unregister_linger_request(osdc, req); 9112cc6128aSIlya Dryomov else 9122cc6128aSIlya Dryomov __unregister_request(osdc, req); 9132cc6128aSIlya Dryomov __register_request(osdc, req); 9142cc6128aSIlya Dryomov ceph_osdc_put_request(req); 9152cc6128aSIlya Dryomov 9162cc6128aSIlya Dryomov /* 9172cc6128aSIlya Dryomov * Unless request has been registered as both normal and 9182cc6128aSIlya Dryomov * lingering, __unregister{,_linger}_request clears r_osd. 9192cc6128aSIlya Dryomov * However, here we need to preserve r_osd to make sure we 9202cc6128aSIlya Dryomov * requeue on the same OSD. 9212cc6128aSIlya Dryomov */ 9222cc6128aSIlya Dryomov WARN_ON(req->r_osd || !osd); 9232cc6128aSIlya Dryomov req->r_osd = osd; 9242cc6128aSIlya Dryomov 9252cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, req->r_tid); 9262cc6128aSIlya Dryomov __enqueue_request(req); 9272cc6128aSIlya Dryomov } 9282cc6128aSIlya Dryomov 9296f6c7006SSage Weil /* 9306f6c7006SSage Weil * Resubmit requests pending on the given osd. 9316f6c7006SSage Weil */ 9326f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 9336f6c7006SSage Weil struct ceph_osd *osd) 9346f6c7006SSage Weil { 935a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 936e02493c0SAlex Elder LIST_HEAD(resend); 9372cc6128aSIlya Dryomov LIST_HEAD(resend_linger); 9386f6c7006SSage Weil int err; 9396f6c7006SSage Weil 9402cc6128aSIlya Dryomov dout("%s osd%d\n", __func__, osd->o_osd); 9416f6c7006SSage Weil err = __reset_osd(osdc, osd); 942685a7555SAlex Elder if (err) 9436f6c7006SSage Weil return; 9442cc6128aSIlya Dryomov 945e02493c0SAlex Elder /* 946e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 947e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 948e02493c0SAlex Elder * sent in tid order, and that is also the order they're 949e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 950e02493c0SAlex Elder * flight will be found first, followed by all requests that 951e02493c0SAlex Elder * have not yet been sent. And to resend requests while 952e02493c0SAlex Elder * preserving this order we will want to put any sent 953e02493c0SAlex Elder * requests back on the front of the osd client's unsent 954e02493c0SAlex Elder * list. 955e02493c0SAlex Elder * 956e02493c0SAlex Elder * So we build a separate ordered list of already-sent 957e02493c0SAlex Elder * requests for the affected osd and splice it onto the 958e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 959e02493c0SAlex Elder * request that has not yet been sent we're done. Those 960e02493c0SAlex Elder * requests are already sitting right where they belong. 961e02493c0SAlex Elder */ 9626f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 963e02493c0SAlex Elder if (!req->r_sent) 964e02493c0SAlex Elder break; 9652cc6128aSIlya Dryomov 9662cc6128aSIlya Dryomov if (!req->r_linger) { 9672cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, 9682cc6128aSIlya Dryomov req->r_tid); 969e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 9706f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 9712cc6128aSIlya Dryomov } else { 9722cc6128aSIlya Dryomov list_move_tail(&req->r_req_lru_item, &resend_linger); 9732cc6128aSIlya Dryomov } 9746f6c7006SSage Weil } 975e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 976a40c4f10SYehuda Sadeh 977e02493c0SAlex Elder /* 9782cc6128aSIlya Dryomov * Both registered and not yet registered linger requests are 9792cc6128aSIlya Dryomov * enqueued with a new tid on the same OSD. We add/move them 9802cc6128aSIlya Dryomov * to req_unsent/o_requests at the end to keep things in tid 9812cc6128aSIlya Dryomov * order. 982e02493c0SAlex Elder */ 983a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 9841d0326b1SIlya Dryomov r_linger_osd_item) { 9852cc6128aSIlya Dryomov WARN_ON(!list_empty(&req->r_req_lru_item)); 9862cc6128aSIlya Dryomov __kick_linger_request(req); 987a40c4f10SYehuda Sadeh } 9882cc6128aSIlya Dryomov 9892cc6128aSIlya Dryomov list_for_each_entry_safe(req, nreq, &resend_linger, r_req_lru_item) 9902cc6128aSIlya Dryomov __kick_linger_request(req); 9916f6c7006SSage Weil } 9926f6c7006SSage Weil 9933d14c5d2SYehuda Sadeh /* 9943d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 9953d14c5d2SYehuda Sadeh */ 9963d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 9973d14c5d2SYehuda Sadeh { 9983d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 9993d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 10003d14c5d2SYehuda Sadeh 10013d14c5d2SYehuda Sadeh if (!osd) 10023d14c5d2SYehuda Sadeh return; 10033d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 10043d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 10053d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 100683aff95eSSage Weil mutex_lock(&osdc->request_mutex); 100783aff95eSSage Weil __kick_osd_requests(osdc, osd); 1008f9d25199SAlex Elder __send_queued(osdc); 100983aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 10103d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 10113d14c5d2SYehuda Sadeh } 10123d14c5d2SYehuda Sadeh 10133d14c5d2SYehuda Sadeh /* 10143d14c5d2SYehuda Sadeh * Track open sessions with osds. 10153d14c5d2SYehuda Sadeh */ 1016e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 10173d14c5d2SYehuda Sadeh { 10183d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10193d14c5d2SYehuda Sadeh 10203d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 10213d14c5d2SYehuda Sadeh if (!osd) 10223d14c5d2SYehuda Sadeh return NULL; 10233d14c5d2SYehuda Sadeh 10243d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 10253d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1026e10006f8SAlex Elder osd->o_osd = onum; 1027f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 10283d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 1029a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 10303d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 10313d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 10323d14c5d2SYehuda Sadeh 1033b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 10343d14c5d2SYehuda Sadeh 10353d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 10363d14c5d2SYehuda Sadeh return osd; 10373d14c5d2SYehuda Sadeh } 10383d14c5d2SYehuda Sadeh 10393d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 10403d14c5d2SYehuda Sadeh { 10413d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 10423d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 10433d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 10443d14c5d2SYehuda Sadeh return osd; 10453d14c5d2SYehuda Sadeh } else { 10463d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 10473d14c5d2SYehuda Sadeh return NULL; 10483d14c5d2SYehuda Sadeh } 10493d14c5d2SYehuda Sadeh } 10503d14c5d2SYehuda Sadeh 10513d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 10523d14c5d2SYehuda Sadeh { 10533d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 10543d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 1055b28ec2f3SIlya Dryomov if (atomic_dec_and_test(&osd->o_ref)) { 10563d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 10573d14c5d2SYehuda Sadeh 1058b28ec2f3SIlya Dryomov if (osd->o_auth.authorizer) 105927859f97SSage Weil ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); 10603d14c5d2SYehuda Sadeh kfree(osd); 10613d14c5d2SYehuda Sadeh } 10623d14c5d2SYehuda Sadeh } 10633d14c5d2SYehuda Sadeh 10643d14c5d2SYehuda Sadeh /* 10653d14c5d2SYehuda Sadeh * remove an osd from our map 10663d14c5d2SYehuda Sadeh */ 10673d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 10683d14c5d2SYehuda Sadeh { 10697eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 1070cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_requests)); 1071cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_linger_requests)); 10727c6e6fc5SIlya Dryomov 10733d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 10747eb71e03SIlya Dryomov rb_erase(&osd->o_node, &osdc->osds); 10757eb71e03SIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 10767eb71e03SIlya Dryomov } 10777eb71e03SIlya Dryomov 10787eb71e03SIlya Dryomov static void remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 10797eb71e03SIlya Dryomov { 10807eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 10817eb71e03SIlya Dryomov 10827eb71e03SIlya Dryomov if (!RB_EMPTY_NODE(&osd->o_node)) { 10833d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 10847eb71e03SIlya Dryomov __remove_osd(osdc, osd); 10853d14c5d2SYehuda Sadeh put_osd(osd); 10863d14c5d2SYehuda Sadeh } 10877eb71e03SIlya Dryomov } 10883d14c5d2SYehuda Sadeh 1089aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 1090aca420bcSSage Weil { 1091048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 1092aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 1093aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 1094aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 1095aca420bcSSage Weil struct ceph_osd, o_node); 10967eb71e03SIlya Dryomov remove_osd(osdc, osd); 1097aca420bcSSage Weil } 1098aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 1099aca420bcSSage Weil } 1100aca420bcSSage Weil 11013d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 11023d14c5d2SYehuda Sadeh struct ceph_osd *osd) 11033d14c5d2SYehuda Sadeh { 1104bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 11053d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1106bbf37ec3SIlya Dryomov 11073d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 1108a319bf56SIlya Dryomov osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl; 11093d14c5d2SYehuda Sadeh } 11103d14c5d2SYehuda Sadeh 1111bbf37ec3SIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd_client *osdc, 1112bbf37ec3SIlya Dryomov struct ceph_osd *osd) 1113bbf37ec3SIlya Dryomov { 1114bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 1115bbf37ec3SIlya Dryomov 1116bbf37ec3SIlya Dryomov if (list_empty(&osd->o_requests) && 1117bbf37ec3SIlya Dryomov list_empty(&osd->o_linger_requests)) 1118bbf37ec3SIlya Dryomov __move_osd_to_lru(osdc, osd); 1119bbf37ec3SIlya Dryomov } 1120bbf37ec3SIlya Dryomov 11213d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 11223d14c5d2SYehuda Sadeh { 11233d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 11243d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 11253d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 11263d14c5d2SYehuda Sadeh } 11273d14c5d2SYehuda Sadeh 1128aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 11293d14c5d2SYehuda Sadeh { 11303d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 11313d14c5d2SYehuda Sadeh 11323d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 11333d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 11343d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 1135aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 11363d14c5d2SYehuda Sadeh break; 11377eb71e03SIlya Dryomov remove_osd(osdc, osd); 11383d14c5d2SYehuda Sadeh } 11393d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 11403d14c5d2SYehuda Sadeh } 11413d14c5d2SYehuda Sadeh 11423d14c5d2SYehuda Sadeh /* 11433d14c5d2SYehuda Sadeh * reset osd connect 11443d14c5d2SYehuda Sadeh */ 11453d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 11463d14c5d2SYehuda Sadeh { 1147c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 11483d14c5d2SYehuda Sadeh 11493d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 1150a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 1151a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 11527eb71e03SIlya Dryomov remove_osd(osdc, osd); 1153c3acb181SAlex Elder return -ENODEV; 1154c3acb181SAlex Elder } 1155c3acb181SAlex Elder 1156c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 1157c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 11583d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 1159c3acb181SAlex Elder struct ceph_osd_request *req; 1160c3acb181SAlex Elder 11613d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 11620b4af2e8SIlya Dryomov "letting msgr retry\n"); 11633d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 11643d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 11653d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1166c3acb181SAlex Elder 1167c3acb181SAlex Elder return -EAGAIN; 11683d14c5d2SYehuda Sadeh } 1169c3acb181SAlex Elder 1170c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1171c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1172c3acb181SAlex Elder osd->o_incarnation++; 1173c3acb181SAlex Elder 1174c3acb181SAlex Elder return 0; 11753d14c5d2SYehuda Sadeh } 11763d14c5d2SYehuda Sadeh 11773d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 11783d14c5d2SYehuda Sadeh { 11793d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 11803d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 11813d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 11823d14c5d2SYehuda Sadeh 1183aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 11843d14c5d2SYehuda Sadeh while (*p) { 11853d14c5d2SYehuda Sadeh parent = *p; 11863d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 11873d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 11883d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 11893d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 11903d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 11913d14c5d2SYehuda Sadeh else 11923d14c5d2SYehuda Sadeh BUG(); 11933d14c5d2SYehuda Sadeh } 11943d14c5d2SYehuda Sadeh 11953d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 11963d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 11973d14c5d2SYehuda Sadeh } 11983d14c5d2SYehuda Sadeh 11993d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 12003d14c5d2SYehuda Sadeh { 12013d14c5d2SYehuda Sadeh struct ceph_osd *osd; 12023d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 12033d14c5d2SYehuda Sadeh 12043d14c5d2SYehuda Sadeh while (n) { 12053d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 12063d14c5d2SYehuda Sadeh if (o < osd->o_osd) 12073d14c5d2SYehuda Sadeh n = n->rb_left; 12083d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 12093d14c5d2SYehuda Sadeh n = n->rb_right; 12103d14c5d2SYehuda Sadeh else 12113d14c5d2SYehuda Sadeh return osd; 12123d14c5d2SYehuda Sadeh } 12133d14c5d2SYehuda Sadeh return NULL; 12143d14c5d2SYehuda Sadeh } 12153d14c5d2SYehuda Sadeh 12163d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 12173d14c5d2SYehuda Sadeh { 12183d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 1219a319bf56SIlya Dryomov osdc->client->options->osd_keepalive_timeout); 12203d14c5d2SYehuda Sadeh } 12213d14c5d2SYehuda Sadeh 12223d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 12233d14c5d2SYehuda Sadeh { 12243d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 12253d14c5d2SYehuda Sadeh } 12263d14c5d2SYehuda Sadeh 12273d14c5d2SYehuda Sadeh /* 12283d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 12293d14c5d2SYehuda Sadeh * the timeout event. 12303d14c5d2SYehuda Sadeh */ 1231a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 12323d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 12333d14c5d2SYehuda Sadeh { 12343d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 12353d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 123677f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 12373d14c5d2SYehuda Sadeh __insert_request(osdc, req); 12383d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 12393d14c5d2SYehuda Sadeh osdc->num_requests++; 12403d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 12413d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 12423d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 12433d14c5d2SYehuda Sadeh } 1244a40c4f10SYehuda Sadeh } 1245a40c4f10SYehuda Sadeh 12463d14c5d2SYehuda Sadeh /* 12473d14c5d2SYehuda Sadeh * called under osdc->request_mutex 12483d14c5d2SYehuda Sadeh */ 12493d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 12503d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 12513d14c5d2SYehuda Sadeh { 125235f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 125335f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 125435f9f8a0SSage Weil req, req->r_tid); 125535f9f8a0SSage Weil return; 125635f9f8a0SSage Weil } 125735f9f8a0SSage Weil 12583d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 12593d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 12606562d661SIlya Dryomov RB_CLEAR_NODE(&req->r_node); 12613d14c5d2SYehuda Sadeh osdc->num_requests--; 12623d14c5d2SYehuda Sadeh 12633d14c5d2SYehuda Sadeh if (req->r_osd) { 12643d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 12656740a845SAlex Elder ceph_msg_revoke(req->r_request); 12663d14c5d2SYehuda Sadeh 12673d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1268bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 12694f23409eSIlya Dryomov if (list_empty(&req->r_linger_osd_item)) 12703d14c5d2SYehuda Sadeh req->r_osd = NULL; 12713d14c5d2SYehuda Sadeh } 12723d14c5d2SYehuda Sadeh 12737d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 12743d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 12753d14c5d2SYehuda Sadeh 12763d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 12773d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 12783d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 12793d14c5d2SYehuda Sadeh } 12803d14c5d2SYehuda Sadeh } 12813d14c5d2SYehuda Sadeh 12823d14c5d2SYehuda Sadeh /* 12833d14c5d2SYehuda Sadeh * Cancel a previously queued request message 12843d14c5d2SYehuda Sadeh */ 12853d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 12863d14c5d2SYehuda Sadeh { 12873d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 12886740a845SAlex Elder ceph_msg_revoke(req->r_request); 12893d14c5d2SYehuda Sadeh req->r_sent = 0; 12903d14c5d2SYehuda Sadeh } 12913d14c5d2SYehuda Sadeh } 12923d14c5d2SYehuda Sadeh 1293a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1294a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1295a40c4f10SYehuda Sadeh { 1296af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1297af593064SIlya Dryomov WARN_ON(!req->r_linger); 1298af593064SIlya Dryomov 129996e4dac6SAlex Elder ceph_osdc_get_request(req); 1300a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 13016194ea89SSage Weil if (req->r_osd) 13021d0326b1SIlya Dryomov list_add_tail(&req->r_linger_osd_item, 13036194ea89SSage Weil &req->r_osd->o_linger_requests); 1304a40c4f10SYehuda Sadeh } 1305a40c4f10SYehuda Sadeh 1306a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1307a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1308a40c4f10SYehuda Sadeh { 1309af593064SIlya Dryomov WARN_ON(!req->r_linger); 1310af593064SIlya Dryomov 1311af593064SIlya Dryomov if (list_empty(&req->r_linger_item)) { 1312af593064SIlya Dryomov dout("%s %p tid %llu not registered\n", __func__, req, 1313af593064SIlya Dryomov req->r_tid); 1314af593064SIlya Dryomov return; 1315af593064SIlya Dryomov } 1316af593064SIlya Dryomov 1317af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1318a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 1319af593064SIlya Dryomov 132061c74035SAlex Elder if (req->r_osd) { 13211d0326b1SIlya Dryomov list_del_init(&req->r_linger_osd_item); 1322bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 1323fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1324a40c4f10SYehuda Sadeh req->r_osd = NULL; 1325a40c4f10SYehuda Sadeh } 132696e4dac6SAlex Elder ceph_osdc_put_request(req); 1327a40c4f10SYehuda Sadeh } 1328a40c4f10SYehuda Sadeh 1329a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1330a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1331a40c4f10SYehuda Sadeh { 1332a40c4f10SYehuda Sadeh if (!req->r_linger) { 1333a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1334a40c4f10SYehuda Sadeh req->r_linger = 1; 1335a40c4f10SYehuda Sadeh } 1336a40c4f10SYehuda Sadeh } 1337a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1338a40c4f10SYehuda Sadeh 13393d14c5d2SYehuda Sadeh /* 1340d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1341d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1342d29adb34SJosh Durgin * 1343d29adb34SJosh Durgin * Caller should hold map_sem for read. 1344d29adb34SJosh Durgin */ 1345d29adb34SJosh Durgin static bool __req_should_be_paused(struct ceph_osd_client *osdc, 1346d29adb34SJosh Durgin struct ceph_osd_request *req) 1347d29adb34SJosh Durgin { 1348d29adb34SJosh Durgin bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 1349d29adb34SJosh Durgin bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 1350d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 1351d29adb34SJosh Durgin return (req->r_flags & CEPH_OSD_FLAG_READ && pauserd) || 1352d29adb34SJosh Durgin (req->r_flags & CEPH_OSD_FLAG_WRITE && pausewr); 1353d29adb34SJosh Durgin } 1354d29adb34SJosh Durgin 1355d29adb34SJosh Durgin /* 135617a13e40SIlya Dryomov * Calculate mapping of a request to a PG. Takes tiering into account. 135717a13e40SIlya Dryomov */ 135817a13e40SIlya Dryomov static int __calc_request_pg(struct ceph_osdmap *osdmap, 135917a13e40SIlya Dryomov struct ceph_osd_request *req, 136017a13e40SIlya Dryomov struct ceph_pg *pg_out) 136117a13e40SIlya Dryomov { 1362205ee118SIlya Dryomov bool need_check_tiering; 1363205ee118SIlya Dryomov 1364205ee118SIlya Dryomov need_check_tiering = false; 1365205ee118SIlya Dryomov if (req->r_target_oloc.pool == -1) { 1366205ee118SIlya Dryomov req->r_target_oloc = req->r_base_oloc; /* struct */ 1367205ee118SIlya Dryomov need_check_tiering = true; 1368205ee118SIlya Dryomov } 1369205ee118SIlya Dryomov if (req->r_target_oid.name_len == 0) { 1370205ee118SIlya Dryomov ceph_oid_copy(&req->r_target_oid, &req->r_base_oid); 1371205ee118SIlya Dryomov need_check_tiering = true; 1372205ee118SIlya Dryomov } 1373205ee118SIlya Dryomov 1374205ee118SIlya Dryomov if (need_check_tiering && 1375205ee118SIlya Dryomov (req->r_flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 137617a13e40SIlya Dryomov struct ceph_pg_pool_info *pi; 137717a13e40SIlya Dryomov 1378205ee118SIlya Dryomov pi = ceph_pg_pool_by_id(osdmap, req->r_target_oloc.pool); 137917a13e40SIlya Dryomov if (pi) { 138017a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_READ) && 138117a13e40SIlya Dryomov pi->read_tier >= 0) 1382205ee118SIlya Dryomov req->r_target_oloc.pool = pi->read_tier; 138317a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 138417a13e40SIlya Dryomov pi->write_tier >= 0) 1385205ee118SIlya Dryomov req->r_target_oloc.pool = pi->write_tier; 138617a13e40SIlya Dryomov } 138717a13e40SIlya Dryomov /* !pi is caught in ceph_oloc_oid_to_pg() */ 138817a13e40SIlya Dryomov } 138917a13e40SIlya Dryomov 1390205ee118SIlya Dryomov return ceph_oloc_oid_to_pg(osdmap, &req->r_target_oloc, 1391205ee118SIlya Dryomov &req->r_target_oid, pg_out); 139217a13e40SIlya Dryomov } 139317a13e40SIlya Dryomov 1394f671b581SIlya Dryomov static void __enqueue_request(struct ceph_osd_request *req) 1395f671b581SIlya Dryomov { 1396f671b581SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 1397f671b581SIlya Dryomov 1398f671b581SIlya Dryomov dout("%s %p tid %llu to osd%d\n", __func__, req, req->r_tid, 1399f671b581SIlya Dryomov req->r_osd ? req->r_osd->o_osd : -1); 1400f671b581SIlya Dryomov 1401f671b581SIlya Dryomov if (req->r_osd) { 1402f671b581SIlya Dryomov __remove_osd_from_lru(req->r_osd); 1403f671b581SIlya Dryomov list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1404f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 1405f671b581SIlya Dryomov } else { 1406f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 1407f671b581SIlya Dryomov } 1408f671b581SIlya Dryomov } 1409f671b581SIlya Dryomov 141017a13e40SIlya Dryomov /* 14113d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 14123d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 141325985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 14146f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 14153d14c5d2SYehuda Sadeh * 14163d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 14173d14c5d2SYehuda Sadeh * 14183d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 14193d14c5d2SYehuda Sadeh */ 14206f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 142138d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 14223d14c5d2SYehuda Sadeh { 14235b191d99SSage Weil struct ceph_pg pgid; 14243d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 14258008ab10SIlya Dryomov int num, o; 14263d14c5d2SYehuda Sadeh int err; 1427d29adb34SJosh Durgin bool was_paused; 14283d14c5d2SYehuda Sadeh 14296f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 143017a13e40SIlya Dryomov 143117a13e40SIlya Dryomov err = __calc_request_pg(osdc->osdmap, req, &pgid); 14326f6c7006SSage Weil if (err) { 14336f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 14343d14c5d2SYehuda Sadeh return err; 14356f6c7006SSage Weil } 14363d14c5d2SYehuda Sadeh req->r_pgid = pgid; 14373d14c5d2SYehuda Sadeh 14388008ab10SIlya Dryomov num = ceph_calc_pg_acting(osdc->osdmap, pgid, acting, &o); 14398008ab10SIlya Dryomov if (num < 0) 14408008ab10SIlya Dryomov num = 0; 14413d14c5d2SYehuda Sadeh 1442d29adb34SJosh Durgin was_paused = req->r_paused; 1443d29adb34SJosh Durgin req->r_paused = __req_should_be_paused(osdc, req); 1444d29adb34SJosh Durgin if (was_paused && !req->r_paused) 1445d29adb34SJosh Durgin force_resend = 1; 1446d29adb34SJosh Durgin 144738d6453cSSage Weil if ((!force_resend && 144838d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 14493d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 14503d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 14513d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 1452d29adb34SJosh Durgin (req->r_osd == NULL && o == -1) || 1453d29adb34SJosh Durgin req->r_paused) 14543d14c5d2SYehuda Sadeh return 0; /* no change */ 14553d14c5d2SYehuda Sadeh 14565b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 14575b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 14583d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 14593d14c5d2SYehuda Sadeh 14603d14c5d2SYehuda Sadeh /* record full pg acting set */ 14613d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 14623d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 14633d14c5d2SYehuda Sadeh 14643d14c5d2SYehuda Sadeh if (req->r_osd) { 14653d14c5d2SYehuda Sadeh __cancel_request(req); 14663d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1467a390de02SIlya Dryomov list_del_init(&req->r_linger_osd_item); 14683d14c5d2SYehuda Sadeh req->r_osd = NULL; 14693d14c5d2SYehuda Sadeh } 14703d14c5d2SYehuda Sadeh 14713d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 14723d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 14733d14c5d2SYehuda Sadeh err = -ENOMEM; 1474e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 14756f6c7006SSage Weil if (!req->r_osd) { 14766f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 14773d14c5d2SYehuda Sadeh goto out; 14786f6c7006SSage Weil } 14793d14c5d2SYehuda Sadeh 14806f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 14813d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 14823d14c5d2SYehuda Sadeh 1483b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1484b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1485b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 14863d14c5d2SYehuda Sadeh } 14873d14c5d2SYehuda Sadeh 1488f671b581SIlya Dryomov __enqueue_request(req); 14893d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 14903d14c5d2SYehuda Sadeh 14913d14c5d2SYehuda Sadeh out: 14923d14c5d2SYehuda Sadeh return err; 14933d14c5d2SYehuda Sadeh } 14943d14c5d2SYehuda Sadeh 14953d14c5d2SYehuda Sadeh /* 14963d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 14973d14c5d2SYehuda Sadeh */ 149856e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 14993d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 15003d14c5d2SYehuda Sadeh { 15011b83bef2SSage Weil void *p; 15023d14c5d2SYehuda Sadeh 15031b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 15041b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 15051b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 15063d14c5d2SYehuda Sadeh 15071b83bef2SSage Weil /* fill in message content that changes each time we send it */ 15081b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 15091b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 1510205ee118SIlya Dryomov put_unaligned_le64(req->r_target_oloc.pool, req->r_request_pool); 15111b83bef2SSage Weil p = req->r_request_pgid; 15121b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 15131b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 15141b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 15151b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 15161b83bef2SSage Weil sizeof(req->r_reassert_version)); 15172169aea6SSage Weil 15183d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 15193d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 15203d14c5d2SYehuda Sadeh 15213d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 152226be8808SAlex Elder 15233d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 152426be8808SAlex Elder 152526be8808SAlex Elder ceph_con_send(&req->r_osd->o_con, req->r_request); 15263d14c5d2SYehuda Sadeh } 15273d14c5d2SYehuda Sadeh 15283d14c5d2SYehuda Sadeh /* 15296f6c7006SSage Weil * Send any requests in the queue (req_unsent). 15306f6c7006SSage Weil */ 1531f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 15326f6c7006SSage Weil { 15336f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 15346f6c7006SSage Weil 1535f9d25199SAlex Elder dout("__send_queued\n"); 1536f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 15376f6c7006SSage Weil __send_request(osdc, req); 15386f6c7006SSage Weil } 15396f6c7006SSage Weil 15406f6c7006SSage Weil /* 15410bbfdfe8SIlya Dryomov * Caller should hold map_sem for read and request_mutex. 15420bbfdfe8SIlya Dryomov */ 15430bbfdfe8SIlya Dryomov static int __ceph_osdc_start_request(struct ceph_osd_client *osdc, 15440bbfdfe8SIlya Dryomov struct ceph_osd_request *req, 15450bbfdfe8SIlya Dryomov bool nofail) 15460bbfdfe8SIlya Dryomov { 15470bbfdfe8SIlya Dryomov int rc; 15480bbfdfe8SIlya Dryomov 15490bbfdfe8SIlya Dryomov __register_request(osdc, req); 15500bbfdfe8SIlya Dryomov req->r_sent = 0; 15510bbfdfe8SIlya Dryomov req->r_got_reply = 0; 15520bbfdfe8SIlya Dryomov rc = __map_request(osdc, req, 0); 15530bbfdfe8SIlya Dryomov if (rc < 0) { 15540bbfdfe8SIlya Dryomov if (nofail) { 15550bbfdfe8SIlya Dryomov dout("osdc_start_request failed map, " 15560bbfdfe8SIlya Dryomov " will retry %lld\n", req->r_tid); 15570bbfdfe8SIlya Dryomov rc = 0; 15580bbfdfe8SIlya Dryomov } else { 15590bbfdfe8SIlya Dryomov __unregister_request(osdc, req); 15600bbfdfe8SIlya Dryomov } 15610bbfdfe8SIlya Dryomov return rc; 15620bbfdfe8SIlya Dryomov } 15630bbfdfe8SIlya Dryomov 15640bbfdfe8SIlya Dryomov if (req->r_osd == NULL) { 15650bbfdfe8SIlya Dryomov dout("send_request %p no up osds in pg\n", req); 15660bbfdfe8SIlya Dryomov ceph_monc_request_next_osdmap(&osdc->client->monc); 15670bbfdfe8SIlya Dryomov } else { 15680bbfdfe8SIlya Dryomov __send_queued(osdc); 15690bbfdfe8SIlya Dryomov } 15700bbfdfe8SIlya Dryomov 15710bbfdfe8SIlya Dryomov return 0; 15720bbfdfe8SIlya Dryomov } 15730bbfdfe8SIlya Dryomov 15740bbfdfe8SIlya Dryomov /* 15753d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 15763d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 15773d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 15783d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 15793d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 15803d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 15813d14c5d2SYehuda Sadeh * there are no open requests). 15823d14c5d2SYehuda Sadeh */ 15833d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 15843d14c5d2SYehuda Sadeh { 15853d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 15863d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 1587a319bf56SIlya Dryomov struct ceph_options *opts = osdc->client->options; 158883aff95eSSage Weil struct ceph_osd_request *req; 15893d14c5d2SYehuda Sadeh struct ceph_osd *osd; 15903d14c5d2SYehuda Sadeh struct list_head slow_osds; 15913d14c5d2SYehuda Sadeh dout("timeout\n"); 15923d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 15933d14c5d2SYehuda Sadeh 15943d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 15953d14c5d2SYehuda Sadeh 15963d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 15973d14c5d2SYehuda Sadeh 15983d14c5d2SYehuda Sadeh /* 15993d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 16003d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 16013d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 16023d14c5d2SYehuda Sadeh */ 16033d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 16043d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 1605a319bf56SIlya Dryomov if (time_before(jiffies, 1606a319bf56SIlya Dryomov req->r_stamp + opts->osd_keepalive_timeout)) 16073d14c5d2SYehuda Sadeh break; 16083d14c5d2SYehuda Sadeh 16093d14c5d2SYehuda Sadeh osd = req->r_osd; 16103d14c5d2SYehuda Sadeh BUG_ON(!osd); 16113d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 16123d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 16133d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 16143d14c5d2SYehuda Sadeh } 16153d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 16163d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 16173d14c5d2SYehuda Sadeh o_keepalive_item); 16183d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 16193d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 16203d14c5d2SYehuda Sadeh } 16213d14c5d2SYehuda Sadeh 16223d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1623f9d25199SAlex Elder __send_queued(osdc); 16243d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 16253d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16263d14c5d2SYehuda Sadeh } 16273d14c5d2SYehuda Sadeh 16283d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 16293d14c5d2SYehuda Sadeh { 16303d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 16313d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 16323d14c5d2SYehuda Sadeh osds_timeout_work.work); 1633a319bf56SIlya Dryomov unsigned long delay = osdc->client->options->osd_idle_ttl / 4; 16343d14c5d2SYehuda Sadeh 16353d14c5d2SYehuda Sadeh dout("osds timeout\n"); 16363d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1637aca420bcSSage Weil remove_old_osds(osdc); 16383d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16393d14c5d2SYehuda Sadeh 16403d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 16413d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 16423d14c5d2SYehuda Sadeh } 16433d14c5d2SYehuda Sadeh 1644205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 1645205ee118SIlya Dryomov struct ceph_object_locator *oloc) 1646205ee118SIlya Dryomov { 1647205ee118SIlya Dryomov u8 struct_v, struct_cv; 1648205ee118SIlya Dryomov u32 len; 1649205ee118SIlya Dryomov void *struct_end; 1650205ee118SIlya Dryomov int ret = 0; 1651205ee118SIlya Dryomov 1652205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1653205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1654205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1655205ee118SIlya Dryomov if (struct_v < 3) { 1656205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 1657205ee118SIlya Dryomov struct_v, struct_cv); 1658205ee118SIlya Dryomov goto e_inval; 1659205ee118SIlya Dryomov } 1660205ee118SIlya Dryomov if (struct_cv > 6) { 1661205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 1662205ee118SIlya Dryomov struct_v, struct_cv); 1663205ee118SIlya Dryomov goto e_inval; 1664205ee118SIlya Dryomov } 1665205ee118SIlya Dryomov len = ceph_decode_32(p); 1666205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1667205ee118SIlya Dryomov struct_end = *p + len; 1668205ee118SIlya Dryomov 1669205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 1670205ee118SIlya Dryomov *p += 4; /* skip preferred */ 1671205ee118SIlya Dryomov 1672205ee118SIlya Dryomov len = ceph_decode_32(p); 1673205ee118SIlya Dryomov if (len > 0) { 1674205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 1675205ee118SIlya Dryomov goto e_inval; 1676205ee118SIlya Dryomov } 1677205ee118SIlya Dryomov 1678205ee118SIlya Dryomov if (struct_v >= 5) { 1679205ee118SIlya Dryomov len = ceph_decode_32(p); 1680205ee118SIlya Dryomov if (len > 0) { 1681205ee118SIlya Dryomov pr_warn("ceph_object_locator::nspace is set\n"); 1682205ee118SIlya Dryomov goto e_inval; 1683205ee118SIlya Dryomov } 1684205ee118SIlya Dryomov } 1685205ee118SIlya Dryomov 1686205ee118SIlya Dryomov if (struct_v >= 6) { 1687205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 1688205ee118SIlya Dryomov if (hash != -1) { 1689205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 1690205ee118SIlya Dryomov goto e_inval; 1691205ee118SIlya Dryomov } 1692205ee118SIlya Dryomov } 1693205ee118SIlya Dryomov 1694205ee118SIlya Dryomov /* skip the rest */ 1695205ee118SIlya Dryomov *p = struct_end; 1696205ee118SIlya Dryomov out: 1697205ee118SIlya Dryomov return ret; 1698205ee118SIlya Dryomov 1699205ee118SIlya Dryomov e_inval: 1700205ee118SIlya Dryomov ret = -EINVAL; 1701205ee118SIlya Dryomov goto out; 1702205ee118SIlya Dryomov } 1703205ee118SIlya Dryomov 1704205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 1705205ee118SIlya Dryomov struct ceph_request_redirect *redir) 1706205ee118SIlya Dryomov { 1707205ee118SIlya Dryomov u8 struct_v, struct_cv; 1708205ee118SIlya Dryomov u32 len; 1709205ee118SIlya Dryomov void *struct_end; 1710205ee118SIlya Dryomov int ret; 1711205ee118SIlya Dryomov 1712205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1713205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1714205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1715205ee118SIlya Dryomov if (struct_cv > 1) { 1716205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 1717205ee118SIlya Dryomov struct_v, struct_cv); 1718205ee118SIlya Dryomov goto e_inval; 1719205ee118SIlya Dryomov } 1720205ee118SIlya Dryomov len = ceph_decode_32(p); 1721205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1722205ee118SIlya Dryomov struct_end = *p + len; 1723205ee118SIlya Dryomov 1724205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 1725205ee118SIlya Dryomov if (ret) 1726205ee118SIlya Dryomov goto out; 1727205ee118SIlya Dryomov 1728205ee118SIlya Dryomov len = ceph_decode_32(p); 1729205ee118SIlya Dryomov if (len > 0) { 1730205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 1731205ee118SIlya Dryomov goto e_inval; 1732205ee118SIlya Dryomov } 1733205ee118SIlya Dryomov 1734205ee118SIlya Dryomov len = ceph_decode_32(p); 1735205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 1736205ee118SIlya Dryomov 1737205ee118SIlya Dryomov /* skip the rest */ 1738205ee118SIlya Dryomov *p = struct_end; 1739205ee118SIlya Dryomov out: 1740205ee118SIlya Dryomov return ret; 1741205ee118SIlya Dryomov 1742205ee118SIlya Dryomov e_inval: 1743205ee118SIlya Dryomov ret = -EINVAL; 1744205ee118SIlya Dryomov goto out; 1745205ee118SIlya Dryomov } 1746205ee118SIlya Dryomov 174725845472SSage Weil static void complete_request(struct ceph_osd_request *req) 174825845472SSage Weil { 174925845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 175025845472SSage Weil } 175125845472SSage Weil 17523d14c5d2SYehuda Sadeh /* 17533d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 17543d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 17553d14c5d2SYehuda Sadeh */ 175670cf052dSShraddha Barke static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg) 17573d14c5d2SYehuda Sadeh { 17581b83bef2SSage Weil void *p, *end; 17593d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1760205ee118SIlya Dryomov struct ceph_request_redirect redir; 17613d14c5d2SYehuda Sadeh u64 tid; 17621b83bef2SSage Weil int object_len; 176379528734SAlex Elder unsigned int numops; 176479528734SAlex Elder int payload_len, flags; 17653d14c5d2SYehuda Sadeh s32 result; 17661b83bef2SSage Weil s32 retry_attempt; 17671b83bef2SSage Weil struct ceph_pg pg; 17681b83bef2SSage Weil int err; 17691b83bef2SSage Weil u32 reassert_epoch; 17701b83bef2SSage Weil u64 reassert_version; 17711b83bef2SSage Weil u32 osdmap_epoch; 17720d5af164SAlex Elder int already_completed; 17739fc6e064SAlex Elder u32 bytes; 1774b0b31a8fSIlya Dryomov u8 decode_redir; 177579528734SAlex Elder unsigned int i; 17763d14c5d2SYehuda Sadeh 17773d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 17781b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 17791b83bef2SSage Weil 17801b83bef2SSage Weil p = msg->front.iov_base; 17811b83bef2SSage Weil end = p + msg->front.iov_len; 17821b83bef2SSage Weil 17831b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 17841b83bef2SSage Weil object_len = ceph_decode_32(&p); 17851b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 17861b83bef2SSage Weil p += object_len; 17871b83bef2SSage Weil 1788ef4859d6SAlex Elder err = ceph_decode_pgid(&p, end, &pg); 17891b83bef2SSage Weil if (err) 17903d14c5d2SYehuda Sadeh goto bad; 17911b83bef2SSage Weil 17921b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 17931b83bef2SSage Weil flags = ceph_decode_64(&p); 17941b83bef2SSage Weil result = ceph_decode_32(&p); 17951b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 17961b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 17971b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 17981b83bef2SSage Weil 17993d14c5d2SYehuda Sadeh /* lookup */ 1800ff513aceSIlya Dryomov down_read(&osdc->map_sem); 18013d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 18023d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 18033d14c5d2SYehuda Sadeh if (req == NULL) { 18043d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 18058058fd45SAlex Elder goto bad_mutex; 18063d14c5d2SYehuda Sadeh } 18073d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 18081b83bef2SSage Weil 18091b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 18101b83bef2SSage Weil req, result); 18111b83bef2SSage Weil 181218741196SDan Carpenter ceph_decode_need(&p, end, 4, bad_put); 18131b83bef2SSage Weil numops = ceph_decode_32(&p); 18141b83bef2SSage Weil if (numops > CEPH_OSD_MAX_OP) 18151b83bef2SSage Weil goto bad_put; 18161b83bef2SSage Weil if (numops != req->r_num_ops) 18171b83bef2SSage Weil goto bad_put; 18181b83bef2SSage Weil payload_len = 0; 181918741196SDan Carpenter ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put); 18201b83bef2SSage Weil for (i = 0; i < numops; i++) { 18211b83bef2SSage Weil struct ceph_osd_op *op = p; 18221b83bef2SSage Weil int len; 18231b83bef2SSage Weil 18241b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 18257665d85bSYan, Zheng req->r_ops[i].outdata_len = len; 18261b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 18271b83bef2SSage Weil payload_len += len; 18281b83bef2SSage Weil p += sizeof(*op); 18291b83bef2SSage Weil } 18309fc6e064SAlex Elder bytes = le32_to_cpu(msg->hdr.data_len); 18319fc6e064SAlex Elder if (payload_len != bytes) { 1832b9a67899SJoe Perches pr_warn("sum of op payload lens %d != data_len %d\n", 18339fc6e064SAlex Elder payload_len, bytes); 18341b83bef2SSage Weil goto bad_put; 18351b83bef2SSage Weil } 18361b83bef2SSage Weil 183718741196SDan Carpenter ceph_decode_need(&p, end, 4 + numops * 4, bad_put); 18381b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 18391b83bef2SSage Weil for (i = 0; i < numops; i++) 18407665d85bSYan, Zheng req->r_ops[i].rval = ceph_decode_32(&p); 18413d14c5d2SYehuda Sadeh 1842205ee118SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 6) { 1843205ee118SIlya Dryomov p += 8 + 4; /* skip replay_version */ 1844205ee118SIlya Dryomov p += 8; /* skip user_version */ 1845205ee118SIlya Dryomov 1846b0b31a8fSIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 7) 1847b0b31a8fSIlya Dryomov ceph_decode_8_safe(&p, end, decode_redir, bad_put); 1848b0b31a8fSIlya Dryomov else 1849b0b31a8fSIlya Dryomov decode_redir = 1; 1850b0b31a8fSIlya Dryomov } else { 1851b0b31a8fSIlya Dryomov decode_redir = 0; 1852b0b31a8fSIlya Dryomov } 1853b0b31a8fSIlya Dryomov 1854b0b31a8fSIlya Dryomov if (decode_redir) { 1855205ee118SIlya Dryomov err = ceph_redirect_decode(&p, end, &redir); 1856205ee118SIlya Dryomov if (err) 1857205ee118SIlya Dryomov goto bad_put; 1858205ee118SIlya Dryomov } else { 1859205ee118SIlya Dryomov redir.oloc.pool = -1; 1860205ee118SIlya Dryomov } 1861205ee118SIlya Dryomov 1862205ee118SIlya Dryomov if (redir.oloc.pool != -1) { 1863205ee118SIlya Dryomov dout("redirect pool %lld\n", redir.oloc.pool); 1864205ee118SIlya Dryomov 1865205ee118SIlya Dryomov __unregister_request(osdc, req); 1866205ee118SIlya Dryomov 1867205ee118SIlya Dryomov req->r_target_oloc = redir.oloc; /* struct */ 1868205ee118SIlya Dryomov 1869205ee118SIlya Dryomov /* 1870205ee118SIlya Dryomov * Start redirect requests with nofail=true. If 1871205ee118SIlya Dryomov * mapping fails, request will end up on the notarget 1872205ee118SIlya Dryomov * list, waiting for the new osdmap (which can take 1873205ee118SIlya Dryomov * a while), even though the original request mapped 1874205ee118SIlya Dryomov * successfully. In the future we might want to follow 1875205ee118SIlya Dryomov * original request's nofail setting here. 1876205ee118SIlya Dryomov */ 1877ff513aceSIlya Dryomov err = __ceph_osdc_start_request(osdc, req, true); 1878205ee118SIlya Dryomov BUG_ON(err); 1879205ee118SIlya Dryomov 1880ff513aceSIlya Dryomov goto out_unlock; 1881205ee118SIlya Dryomov } 1882205ee118SIlya Dryomov 1883eb845ff1SYan, Zheng already_completed = req->r_got_reply; 18843d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 18851b83bef2SSage Weil req->r_result = result; 18863d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 18873d14c5d2SYehuda Sadeh bytes); 18883d14c5d2SYehuda Sadeh if (req->r_result == 0) 18893d14c5d2SYehuda Sadeh req->r_result = bytes; 18903d14c5d2SYehuda Sadeh 18913d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 18921b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 18931b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 18943d14c5d2SYehuda Sadeh 18953d14c5d2SYehuda Sadeh req->r_got_reply = 1; 18963d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 18973d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 1898ff513aceSIlya Dryomov goto out_unlock; 18993d14c5d2SYehuda Sadeh } 19003d14c5d2SYehuda Sadeh 19013d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 19023d14c5d2SYehuda Sadeh 1903a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1904a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1905a40c4f10SYehuda Sadeh 19063d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 19073d14c5d2SYehuda Sadeh if (result < 0 || 19083d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 19093d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 19103d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 19113d14c5d2SYehuda Sadeh 19123d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1913ff513aceSIlya Dryomov up_read(&osdc->map_sem); 19143d14c5d2SYehuda Sadeh 1915eb845ff1SYan, Zheng if (!already_completed) { 191661c5d6bfSYan, Zheng if (req->r_unsafe_callback && 191761c5d6bfSYan, Zheng result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK)) 191861c5d6bfSYan, Zheng req->r_unsafe_callback(req, true); 19193d14c5d2SYehuda Sadeh if (req->r_callback) 19203d14c5d2SYehuda Sadeh req->r_callback(req, msg); 19213d14c5d2SYehuda Sadeh else 19223d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 1923eb845ff1SYan, Zheng } 19243d14c5d2SYehuda Sadeh 192561c5d6bfSYan, Zheng if (flags & CEPH_OSD_FLAG_ONDISK) { 192661c5d6bfSYan, Zheng if (req->r_unsafe_callback && already_completed) 192761c5d6bfSYan, Zheng req->r_unsafe_callback(req, false); 192825845472SSage Weil complete_request(req); 192961c5d6bfSYan, Zheng } 19303d14c5d2SYehuda Sadeh 1931ff513aceSIlya Dryomov out: 1932a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 19333d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 19343d14c5d2SYehuda Sadeh return; 1935ff513aceSIlya Dryomov out_unlock: 1936ff513aceSIlya Dryomov mutex_unlock(&osdc->request_mutex); 1937ff513aceSIlya Dryomov up_read(&osdc->map_sem); 1938ff513aceSIlya Dryomov goto out; 19393d14c5d2SYehuda Sadeh 19401b83bef2SSage Weil bad_put: 194137c89bdeSLi Wang req->r_result = -EIO; 194237c89bdeSLi Wang __unregister_request(osdc, req); 194337c89bdeSLi Wang if (req->r_callback) 194437c89bdeSLi Wang req->r_callback(req, msg); 194537c89bdeSLi Wang else 194637c89bdeSLi Wang complete_all(&req->r_completion); 194737c89bdeSLi Wang complete_request(req); 19481b83bef2SSage Weil ceph_osdc_put_request(req); 19498058fd45SAlex Elder bad_mutex: 19508058fd45SAlex Elder mutex_unlock(&osdc->request_mutex); 1951ff513aceSIlya Dryomov up_read(&osdc->map_sem); 19523d14c5d2SYehuda Sadeh bad: 19531b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 19541b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 19553d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 19563d14c5d2SYehuda Sadeh } 19573d14c5d2SYehuda Sadeh 19586f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 19593d14c5d2SYehuda Sadeh { 19603d14c5d2SYehuda Sadeh struct rb_node *p, *n; 19613d14c5d2SYehuda Sadeh 19627eb71e03SIlya Dryomov dout("%s %p\n", __func__, osdc); 19633d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 19646f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 19653d14c5d2SYehuda Sadeh 19663d14c5d2SYehuda Sadeh n = rb_next(p); 19673d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 19683d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 19693d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 19703d14c5d2SYehuda Sadeh osd->o_osd), 19713d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 19723d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 19733d14c5d2SYehuda Sadeh } 19743d14c5d2SYehuda Sadeh } 19753d14c5d2SYehuda Sadeh 19763d14c5d2SYehuda Sadeh /* 19776f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 19786f6c7006SSage Weil * no osd, request a new map. 19793d14c5d2SYehuda Sadeh * 1980e6d50f67SAlex Elder * Caller should hold map_sem for read. 19813d14c5d2SYehuda Sadeh */ 19829a1ea2dbSJosh Durgin static void kick_requests(struct ceph_osd_client *osdc, bool force_resend, 19839a1ea2dbSJosh Durgin bool force_resend_writes) 19843d14c5d2SYehuda Sadeh { 1985a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 19866f6c7006SSage Weil struct rb_node *p; 19876f6c7006SSage Weil int needmap = 0; 19886f6c7006SSage Weil int err; 19899a1ea2dbSJosh Durgin bool force_resend_req; 19903d14c5d2SYehuda Sadeh 19919a1ea2dbSJosh Durgin dout("kick_requests %s %s\n", force_resend ? " (force resend)" : "", 19929a1ea2dbSJosh Durgin force_resend_writes ? " (force resend writes)" : ""); 19933d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19946194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 19956f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 19966194ea89SSage Weil p = rb_next(p); 1997ab60b16dSAlex Elder 1998ab60b16dSAlex Elder /* 1999ab60b16dSAlex Elder * For linger requests that have not yet been 2000ab60b16dSAlex Elder * registered, move them to the linger list; they'll 2001ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 2002ab60b16dSAlex Elder * the request before re-registering it as a linger 2003ab60b16dSAlex Elder * request to ensure the __map_request() below 2004ab60b16dSAlex Elder * will decide it needs to be sent. 2005ab60b16dSAlex Elder */ 2006ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 2007ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 2008ab60b16dSAlex Elder req, req->r_tid, 2009ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 201096e4dac6SAlex Elder ceph_osdc_get_request(req); 2011ab60b16dSAlex Elder __unregister_request(osdc, req); 2012ab60b16dSAlex Elder __register_linger_request(osdc, req); 201396e4dac6SAlex Elder ceph_osdc_put_request(req); 2014ab60b16dSAlex Elder continue; 2015ab60b16dSAlex Elder } 2016ab60b16dSAlex Elder 20179a1ea2dbSJosh Durgin force_resend_req = force_resend || 20189a1ea2dbSJosh Durgin (force_resend_writes && 20199a1ea2dbSJosh Durgin req->r_flags & CEPH_OSD_FLAG_WRITE); 20209a1ea2dbSJosh Durgin err = __map_request(osdc, req, force_resend_req); 20216f6c7006SSage Weil if (err < 0) 20226f6c7006SSage Weil continue; /* error */ 20236f6c7006SSage Weil if (req->r_osd == NULL) { 20246f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 20256f6c7006SSage Weil needmap++; /* request a newer map */ 20266f6c7006SSage Weil } else if (err > 0) { 20276194ea89SSage Weil if (!req->r_linger) { 20286194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 20296194ea89SSage Weil req->r_tid, 20306f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 20316f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 20326f6c7006SSage Weil } 20336f6c7006SSage Weil } 20346194ea89SSage Weil } 2035a40c4f10SYehuda Sadeh 2036a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 2037a40c4f10SYehuda Sadeh r_linger_item) { 2038a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 2039a40c4f10SYehuda Sadeh 20409a1ea2dbSJosh Durgin err = __map_request(osdc, req, 20419a1ea2dbSJosh Durgin force_resend || force_resend_writes); 2042ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 2043a40c4f10SYehuda Sadeh if (err < 0) 2044a40c4f10SYehuda Sadeh continue; /* hrm! */ 2045b0494532SIlya Dryomov if (req->r_osd == NULL || err > 0) { 2046a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 2047b0494532SIlya Dryomov dout("lingering %p tid %llu maps to no osd\n", 2048b0494532SIlya Dryomov req, req->r_tid); 2049b0494532SIlya Dryomov /* 2050b0494532SIlya Dryomov * A homeless lingering request makes 2051b0494532SIlya Dryomov * no sense, as it's job is to keep 2052b0494532SIlya Dryomov * a particular OSD connection open. 2053b0494532SIlya Dryomov * Request a newer map and kick the 2054b0494532SIlya Dryomov * request, knowing that it won't be 2055b0494532SIlya Dryomov * resent until we actually get a map 2056b0494532SIlya Dryomov * that can tell us where to send it. 2057b0494532SIlya Dryomov */ 2058b0494532SIlya Dryomov needmap++; 2059a40c4f10SYehuda Sadeh } 2060a40c4f10SYehuda Sadeh 2061b0494532SIlya Dryomov dout("kicking lingering %p tid %llu osd%d\n", req, 2062b0494532SIlya Dryomov req->r_tid, req->r_osd ? req->r_osd->o_osd : -1); 2063a40c4f10SYehuda Sadeh __register_request(osdc, req); 2064c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 2065a40c4f10SYehuda Sadeh } 2066b0494532SIlya Dryomov } 206714d2f38dSAlex Elder reset_changed_osds(osdc); 20683d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 20693d14c5d2SYehuda Sadeh 20703d14c5d2SYehuda Sadeh if (needmap) { 20713d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 20723d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 20733d14c5d2SYehuda Sadeh } 20743d14c5d2SYehuda Sadeh } 20756f6c7006SSage Weil 20766f6c7006SSage Weil 20773d14c5d2SYehuda Sadeh /* 20783d14c5d2SYehuda Sadeh * Process updated osd map. 20793d14c5d2SYehuda Sadeh * 20803d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 20813d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 20823d14c5d2SYehuda Sadeh * off to different OSDs as needed. 20833d14c5d2SYehuda Sadeh */ 20843d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 20853d14c5d2SYehuda Sadeh { 20863d14c5d2SYehuda Sadeh void *p, *end, *next; 20873d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 20883d14c5d2SYehuda Sadeh u32 epoch; 20893d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 20903d14c5d2SYehuda Sadeh int err; 20913d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 20929a1ea2dbSJosh Durgin bool was_full; 20933d14c5d2SYehuda Sadeh 20943d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 20953d14c5d2SYehuda Sadeh p = msg->front.iov_base; 20963d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 20973d14c5d2SYehuda Sadeh 20983d14c5d2SYehuda Sadeh /* verify fsid */ 20993d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 21003d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 21013d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 21023d14c5d2SYehuda Sadeh return; 21033d14c5d2SYehuda Sadeh 21043d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 21053d14c5d2SYehuda Sadeh 21069a1ea2dbSJosh Durgin was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 21079a1ea2dbSJosh Durgin 21083d14c5d2SYehuda Sadeh /* incremental maps */ 21093d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 21103d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 21113d14c5d2SYehuda Sadeh while (nr_maps > 0) { 21123d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 21133d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 21143d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 21153d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 21163d14c5d2SYehuda Sadeh next = p + maplen; 21173d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 21183d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 21193d14c5d2SYehuda Sadeh epoch, maplen); 21203d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 21213d14c5d2SYehuda Sadeh osdc->osdmap, 212215d9882cSAlex Elder &osdc->client->msgr); 21233d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 21243d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 21253d14c5d2SYehuda Sadeh goto bad; 21263d14c5d2SYehuda Sadeh } 21273d14c5d2SYehuda Sadeh BUG_ON(!newmap); 21283d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 21293d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 21303d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 21313d14c5d2SYehuda Sadeh } 21329a1ea2dbSJosh Durgin was_full = was_full || 21339a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 21349a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 21359a1ea2dbSJosh Durgin kick_requests(osdc, 0, was_full); 21363d14c5d2SYehuda Sadeh } else { 21373d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 21383d14c5d2SYehuda Sadeh epoch, maplen); 21393d14c5d2SYehuda Sadeh } 21403d14c5d2SYehuda Sadeh p = next; 21413d14c5d2SYehuda Sadeh nr_maps--; 21423d14c5d2SYehuda Sadeh } 21433d14c5d2SYehuda Sadeh if (newmap) 21443d14c5d2SYehuda Sadeh goto done; 21453d14c5d2SYehuda Sadeh 21463d14c5d2SYehuda Sadeh /* full maps */ 21473d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 21483d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 21493d14c5d2SYehuda Sadeh while (nr_maps) { 21503d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 21513d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 21523d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 21533d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 21543d14c5d2SYehuda Sadeh if (nr_maps > 1) { 21553d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 21563d14c5d2SYehuda Sadeh epoch, maplen); 21573d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 21583d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 21593d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 21603d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 21613d14c5d2SYehuda Sadeh } else { 216238d6453cSSage Weil int skipped_map = 0; 216338d6453cSSage Weil 21643d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 2165a2505d63SIlya Dryomov newmap = ceph_osdmap_decode(&p, p+maplen); 21663d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 21673d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 21683d14c5d2SYehuda Sadeh goto bad; 21693d14c5d2SYehuda Sadeh } 21703d14c5d2SYehuda Sadeh BUG_ON(!newmap); 21713d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 21723d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 217338d6453cSSage Weil if (oldmap) { 217438d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 217538d6453cSSage Weil skipped_map = 1; 21763d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 217738d6453cSSage Weil } 21789a1ea2dbSJosh Durgin was_full = was_full || 21799a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 21809a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 21819a1ea2dbSJosh Durgin kick_requests(osdc, skipped_map, was_full); 21823d14c5d2SYehuda Sadeh } 21833d14c5d2SYehuda Sadeh p += maplen; 21843d14c5d2SYehuda Sadeh nr_maps--; 21853d14c5d2SYehuda Sadeh } 21863d14c5d2SYehuda Sadeh 2187b72e19b9SDan Carpenter if (!osdc->osdmap) 2188b72e19b9SDan Carpenter goto bad; 21893d14c5d2SYehuda Sadeh done: 21903d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 219182dcabadSIlya Dryomov ceph_monc_got_map(&osdc->client->monc, CEPH_SUB_OSDMAP, 219282dcabadSIlya Dryomov osdc->osdmap->epoch); 2193cd634fb6SSage Weil 2194cd634fb6SSage Weil /* 2195cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 2196cd634fb6SSage Weil * we find out when we are no longer full and stop returning 2197cd634fb6SSage Weil * ENOSPC. 2198cd634fb6SSage Weil */ 2199d29adb34SJosh Durgin if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 2200d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || 2201d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) 2202cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 2203cd634fb6SSage Weil 2204f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 2205f9d25199SAlex Elder __send_queued(osdc); 2206f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 22073d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 22083d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 22093d14c5d2SYehuda Sadeh return; 22103d14c5d2SYehuda Sadeh 22113d14c5d2SYehuda Sadeh bad: 22123d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 22133d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 22143d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 22153d14c5d2SYehuda Sadeh } 22163d14c5d2SYehuda Sadeh 22173d14c5d2SYehuda Sadeh /* 2218a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 2219a40c4f10SYehuda Sadeh * 2220a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 2221a40c4f10SYehuda Sadeh */ 2222a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 2223a40c4f10SYehuda Sadeh { 2224a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 2225a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 2226a40c4f10SYehuda Sadeh 2227a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 2228a40c4f10SYehuda Sadeh kfree(event); 2229a40c4f10SYehuda Sadeh } 2230a40c4f10SYehuda Sadeh 2231a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 2232a40c4f10SYehuda Sadeh { 2233a40c4f10SYehuda Sadeh kref_get(&event->kref); 2234a40c4f10SYehuda Sadeh } 2235a40c4f10SYehuda Sadeh 2236a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 2237a40c4f10SYehuda Sadeh { 2238a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 2239a40c4f10SYehuda Sadeh } 2240a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 2241a40c4f10SYehuda Sadeh 2242a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 2243a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 2244a40c4f10SYehuda Sadeh { 2245a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2246a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2247a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2248a40c4f10SYehuda Sadeh 2249a40c4f10SYehuda Sadeh while (*p) { 2250a40c4f10SYehuda Sadeh parent = *p; 2251a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2252a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 2253a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2254a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 2255a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2256a40c4f10SYehuda Sadeh else 2257a40c4f10SYehuda Sadeh BUG(); 2258a40c4f10SYehuda Sadeh } 2259a40c4f10SYehuda Sadeh 2260a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 2261a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 2262a40c4f10SYehuda Sadeh } 2263a40c4f10SYehuda Sadeh 2264a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 2265a40c4f10SYehuda Sadeh u64 cookie) 2266a40c4f10SYehuda Sadeh { 2267a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2268a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2269a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2270a40c4f10SYehuda Sadeh 2271a40c4f10SYehuda Sadeh while (*p) { 2272a40c4f10SYehuda Sadeh parent = *p; 2273a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2274a40c4f10SYehuda Sadeh if (cookie < event->cookie) 2275a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2276a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 2277a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2278a40c4f10SYehuda Sadeh else 2279a40c4f10SYehuda Sadeh return event; 2280a40c4f10SYehuda Sadeh } 2281a40c4f10SYehuda Sadeh return NULL; 2282a40c4f10SYehuda Sadeh } 2283a40c4f10SYehuda Sadeh 2284a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 2285a40c4f10SYehuda Sadeh { 2286a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2287a40c4f10SYehuda Sadeh 2288a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 2289a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 2290a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 2291a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2292a40c4f10SYehuda Sadeh } else { 2293a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 2294a40c4f10SYehuda Sadeh } 2295a40c4f10SYehuda Sadeh } 2296a40c4f10SYehuda Sadeh 2297a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 2298a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 22993c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 2300a40c4f10SYehuda Sadeh { 2301a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2302a40c4f10SYehuda Sadeh 2303a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 2304a40c4f10SYehuda Sadeh if (!event) 2305a40c4f10SYehuda Sadeh return -ENOMEM; 2306a40c4f10SYehuda Sadeh 2307a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 2308a40c4f10SYehuda Sadeh event->cb = event_cb; 23093c663bbdSAlex Elder event->one_shot = 0; 2310a40c4f10SYehuda Sadeh event->data = data; 2311a40c4f10SYehuda Sadeh event->osdc = osdc; 2312a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 23133ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 2314a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 2315a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 2316a40c4f10SYehuda Sadeh 2317a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2318a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 2319a40c4f10SYehuda Sadeh __insert_event(osdc, event); 2320a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2321a40c4f10SYehuda Sadeh 2322a40c4f10SYehuda Sadeh *pevent = event; 2323a40c4f10SYehuda Sadeh return 0; 2324a40c4f10SYehuda Sadeh } 2325a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 2326a40c4f10SYehuda Sadeh 2327a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 2328a40c4f10SYehuda Sadeh { 2329a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2330a40c4f10SYehuda Sadeh 2331a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 2332a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2333a40c4f10SYehuda Sadeh __remove_event(event); 2334a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2335a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 2336a40c4f10SYehuda Sadeh } 2337a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 2338a40c4f10SYehuda Sadeh 2339a40c4f10SYehuda Sadeh 2340a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 2341a40c4f10SYehuda Sadeh { 2342a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 2343a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 2344a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 2345a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 2346a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 2347a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 2348a40c4f10SYehuda Sadeh 2349a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 2350a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 2351a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 2352a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2353a40c4f10SYehuda Sadeh kfree(event_work); 2354a40c4f10SYehuda Sadeh } 2355a40c4f10SYehuda Sadeh 2356a40c4f10SYehuda Sadeh 2357a40c4f10SYehuda Sadeh /* 2358a40c4f10SYehuda Sadeh * Process osd watch notifications 2359a40c4f10SYehuda Sadeh */ 23603c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 23613c663bbdSAlex Elder struct ceph_msg *msg) 2362a40c4f10SYehuda Sadeh { 2363a40c4f10SYehuda Sadeh void *p, *end; 2364a40c4f10SYehuda Sadeh u8 proto_ver; 2365a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 2366a40c4f10SYehuda Sadeh u8 opcode; 2367a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2368a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 2369a40c4f10SYehuda Sadeh 2370a40c4f10SYehuda Sadeh p = msg->front.iov_base; 2371a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 2372a40c4f10SYehuda Sadeh 2373a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 2374a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 2375a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 2376a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 2377a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 2378a40c4f10SYehuda Sadeh 2379a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2380a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 2381a40c4f10SYehuda Sadeh if (event) { 23823c663bbdSAlex Elder BUG_ON(event->one_shot); 2383a40c4f10SYehuda Sadeh get_event(event); 2384a40c4f10SYehuda Sadeh } 2385a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2386a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 2387a40c4f10SYehuda Sadeh cookie, ver, event); 2388a40c4f10SYehuda Sadeh if (event) { 2389a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 2390a40c4f10SYehuda Sadeh if (!event_work) { 239191883cd2SIlya Dryomov pr_err("couldn't allocate event_work\n"); 239291883cd2SIlya Dryomov ceph_osdc_put_event(event); 239391883cd2SIlya Dryomov return; 2394a40c4f10SYehuda Sadeh } 23956b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 2396a40c4f10SYehuda Sadeh event_work->event = event; 2397a40c4f10SYehuda Sadeh event_work->ver = ver; 2398a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 2399a40c4f10SYehuda Sadeh event_work->opcode = opcode; 240091883cd2SIlya Dryomov 240191883cd2SIlya Dryomov queue_work(osdc->notify_wq, &event_work->work); 2402a40c4f10SYehuda Sadeh } 2403a40c4f10SYehuda Sadeh 2404a40c4f10SYehuda Sadeh return; 2405a40c4f10SYehuda Sadeh 2406a40c4f10SYehuda Sadeh bad: 2407a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 2408a40c4f10SYehuda Sadeh } 2409a40c4f10SYehuda Sadeh 2410a40c4f10SYehuda Sadeh /* 2411e65550fdSAlex Elder * build new request AND message 2412e65550fdSAlex Elder * 2413e65550fdSAlex Elder */ 2414e65550fdSAlex Elder void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, 2415e65550fdSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 2416e65550fdSAlex Elder struct timespec *mtime) 2417e65550fdSAlex Elder { 2418e65550fdSAlex Elder struct ceph_msg *msg = req->r_request; 2419e65550fdSAlex Elder void *p; 2420e65550fdSAlex Elder size_t msg_size; 2421e65550fdSAlex Elder int flags = req->r_flags; 2422e65550fdSAlex Elder u64 data_len; 2423e65550fdSAlex Elder unsigned int i; 2424e65550fdSAlex Elder 2425e65550fdSAlex Elder req->r_snapid = snap_id; 2426e65550fdSAlex Elder req->r_snapc = ceph_get_snap_context(snapc); 2427e65550fdSAlex Elder 2428e65550fdSAlex Elder /* encode request */ 2429e65550fdSAlex Elder msg->hdr.version = cpu_to_le16(4); 2430e65550fdSAlex Elder 2431e65550fdSAlex Elder p = msg->front.iov_base; 2432e65550fdSAlex Elder ceph_encode_32(&p, 1); /* client_inc is always 1 */ 2433e65550fdSAlex Elder req->r_request_osdmap_epoch = p; 2434e65550fdSAlex Elder p += 4; 2435e65550fdSAlex Elder req->r_request_flags = p; 2436e65550fdSAlex Elder p += 4; 2437e65550fdSAlex Elder if (req->r_flags & CEPH_OSD_FLAG_WRITE) 2438e65550fdSAlex Elder ceph_encode_timespec(p, mtime); 2439e65550fdSAlex Elder p += sizeof(struct ceph_timespec); 2440e65550fdSAlex Elder req->r_request_reassert_version = p; 2441e65550fdSAlex Elder p += sizeof(struct ceph_eversion); /* will get filled in */ 2442e65550fdSAlex Elder 2443e65550fdSAlex Elder /* oloc */ 2444e65550fdSAlex Elder ceph_encode_8(&p, 4); 2445e65550fdSAlex Elder ceph_encode_8(&p, 4); 2446e65550fdSAlex Elder ceph_encode_32(&p, 8 + 4 + 4); 2447e65550fdSAlex Elder req->r_request_pool = p; 2448e65550fdSAlex Elder p += 8; 2449e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2450e65550fdSAlex Elder ceph_encode_32(&p, 0); /* key len */ 2451e65550fdSAlex Elder 2452e65550fdSAlex Elder ceph_encode_8(&p, 1); 2453e65550fdSAlex Elder req->r_request_pgid = p; 2454e65550fdSAlex Elder p += 8 + 4; 2455e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2456e65550fdSAlex Elder 2457e65550fdSAlex Elder /* oid */ 24583c972c95SIlya Dryomov ceph_encode_32(&p, req->r_base_oid.name_len); 24593c972c95SIlya Dryomov memcpy(p, req->r_base_oid.name, req->r_base_oid.name_len); 24603c972c95SIlya Dryomov dout("oid '%.*s' len %d\n", req->r_base_oid.name_len, 24613c972c95SIlya Dryomov req->r_base_oid.name, req->r_base_oid.name_len); 24623c972c95SIlya Dryomov p += req->r_base_oid.name_len; 2463e65550fdSAlex Elder 2464e65550fdSAlex Elder /* ops--can imply data */ 2465e65550fdSAlex Elder ceph_encode_16(&p, (u16)req->r_num_ops); 2466e65550fdSAlex Elder data_len = 0; 2467e65550fdSAlex Elder for (i = 0; i < req->r_num_ops; i++) { 2468e65550fdSAlex Elder data_len += osd_req_encode_op(req, p, i); 2469e65550fdSAlex Elder p += sizeof(struct ceph_osd_op); 2470e65550fdSAlex Elder } 2471e65550fdSAlex Elder 2472e65550fdSAlex Elder /* snaps */ 2473e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapid); 2474e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 2475e65550fdSAlex Elder ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 2476e65550fdSAlex Elder if (req->r_snapc) { 2477e65550fdSAlex Elder for (i = 0; i < snapc->num_snaps; i++) { 2478e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc->snaps[i]); 2479e65550fdSAlex Elder } 2480e65550fdSAlex Elder } 2481e65550fdSAlex Elder 2482e65550fdSAlex Elder req->r_request_attempts = p; 2483e65550fdSAlex Elder p += 4; 2484e65550fdSAlex Elder 2485e65550fdSAlex Elder /* data */ 2486e65550fdSAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 2487e65550fdSAlex Elder u16 data_off; 2488e65550fdSAlex Elder 2489e65550fdSAlex Elder /* 2490e65550fdSAlex Elder * The header "data_off" is a hint to the receiver 2491e65550fdSAlex Elder * allowing it to align received data into its 2492e65550fdSAlex Elder * buffers such that there's no need to re-copy 2493e65550fdSAlex Elder * it before writing it to disk (direct I/O). 2494e65550fdSAlex Elder */ 2495e65550fdSAlex Elder data_off = (u16) (off & 0xffff); 2496e65550fdSAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 2497e65550fdSAlex Elder } 2498e65550fdSAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 2499e65550fdSAlex Elder 2500e65550fdSAlex Elder BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 2501e65550fdSAlex Elder msg_size = p - msg->front.iov_base; 2502e65550fdSAlex Elder msg->front.iov_len = msg_size; 2503e65550fdSAlex Elder msg->hdr.front_len = cpu_to_le32(msg_size); 2504e65550fdSAlex Elder 2505e65550fdSAlex Elder dout("build_request msg_size was %d\n", (int)msg_size); 2506e65550fdSAlex Elder } 2507e65550fdSAlex Elder EXPORT_SYMBOL(ceph_osdc_build_request); 2508e65550fdSAlex Elder 2509e65550fdSAlex Elder /* 25103d14c5d2SYehuda Sadeh * Register request, send initial attempt. 25113d14c5d2SYehuda Sadeh */ 25123d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 25133d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 25143d14c5d2SYehuda Sadeh bool nofail) 25153d14c5d2SYehuda Sadeh { 25160bbfdfe8SIlya Dryomov int rc; 25173d14c5d2SYehuda Sadeh 25183d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 25193d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 25200bbfdfe8SIlya Dryomov 25210bbfdfe8SIlya Dryomov rc = __ceph_osdc_start_request(osdc, req, nofail); 25220bbfdfe8SIlya Dryomov 25233d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 25243d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 25250bbfdfe8SIlya Dryomov 25263d14c5d2SYehuda Sadeh return rc; 25273d14c5d2SYehuda Sadeh } 25283d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 25293d14c5d2SYehuda Sadeh 25303d14c5d2SYehuda Sadeh /* 2531c9f9b93dSIlya Dryomov * Unregister a registered request. The request is not completed (i.e. 2532c9f9b93dSIlya Dryomov * no callbacks or wakeups) - higher layers are supposed to know what 2533c9f9b93dSIlya Dryomov * they are canceling. 2534c9f9b93dSIlya Dryomov */ 2535c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 2536c9f9b93dSIlya Dryomov { 2537c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 2538c9f9b93dSIlya Dryomov 2539c9f9b93dSIlya Dryomov mutex_lock(&osdc->request_mutex); 2540c9f9b93dSIlya Dryomov if (req->r_linger) 2541c9f9b93dSIlya Dryomov __unregister_linger_request(osdc, req); 2542c9f9b93dSIlya Dryomov __unregister_request(osdc, req); 2543c9f9b93dSIlya Dryomov mutex_unlock(&osdc->request_mutex); 2544c9f9b93dSIlya Dryomov 2545c9f9b93dSIlya Dryomov dout("%s %p tid %llu canceled\n", __func__, req, req->r_tid); 2546c9f9b93dSIlya Dryomov } 2547c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 2548c9f9b93dSIlya Dryomov 2549c9f9b93dSIlya Dryomov /* 25503d14c5d2SYehuda Sadeh * wait for a request to complete 25513d14c5d2SYehuda Sadeh */ 25523d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 25533d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 25543d14c5d2SYehuda Sadeh { 25553d14c5d2SYehuda Sadeh int rc; 25563d14c5d2SYehuda Sadeh 2557c9f9b93dSIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 2558c9f9b93dSIlya Dryomov 25593d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 25603d14c5d2SYehuda Sadeh if (rc < 0) { 2561c9f9b93dSIlya Dryomov dout("%s %p tid %llu interrupted\n", __func__, req, req->r_tid); 2562c9f9b93dSIlya Dryomov ceph_osdc_cancel_request(req); 256325845472SSage Weil complete_request(req); 25643d14c5d2SYehuda Sadeh return rc; 25653d14c5d2SYehuda Sadeh } 25663d14c5d2SYehuda Sadeh 2567c9f9b93dSIlya Dryomov dout("%s %p tid %llu result %d\n", __func__, req, req->r_tid, 2568c9f9b93dSIlya Dryomov req->r_result); 25693d14c5d2SYehuda Sadeh return req->r_result; 25703d14c5d2SYehuda Sadeh } 25713d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 25723d14c5d2SYehuda Sadeh 25733d14c5d2SYehuda Sadeh /* 25743d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 25753d14c5d2SYehuda Sadeh */ 25763d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 25773d14c5d2SYehuda Sadeh { 25783d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 25793d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 25803d14c5d2SYehuda Sadeh 25813d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 25823d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 25833d14c5d2SYehuda Sadeh while (1) { 25843d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 25853d14c5d2SYehuda Sadeh if (!req) 25863d14c5d2SYehuda Sadeh break; 25873d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 25883d14c5d2SYehuda Sadeh break; 25893d14c5d2SYehuda Sadeh 25903d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 25913d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 25923d14c5d2SYehuda Sadeh continue; 25933d14c5d2SYehuda Sadeh 25943d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 25953d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 25963d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 25973d14c5d2SYehuda Sadeh req->r_tid, last_tid); 25983d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 25993d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 26003d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 26013d14c5d2SYehuda Sadeh } 26023d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 26033d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 26043d14c5d2SYehuda Sadeh } 26053d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 26063d14c5d2SYehuda Sadeh 26073d14c5d2SYehuda Sadeh /* 2608dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 2609dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 2610dd935f44SJosh Durgin */ 2611f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 2612dd935f44SJosh Durgin { 2613dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 2614dd935f44SJosh Durgin } 2615dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 2616dd935f44SJosh Durgin 2617dd935f44SJosh Durgin 2618dd935f44SJosh Durgin /* 26193d14c5d2SYehuda Sadeh * init, shutdown 26203d14c5d2SYehuda Sadeh */ 26213d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 26223d14c5d2SYehuda Sadeh { 26233d14c5d2SYehuda Sadeh int err; 26243d14c5d2SYehuda Sadeh 26253d14c5d2SYehuda Sadeh dout("init\n"); 26263d14c5d2SYehuda Sadeh osdc->client = client; 26273d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 26283d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 26293d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 26303d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 26313d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 26323d14c5d2SYehuda Sadeh osdc->last_tid = 0; 26333d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 26343d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 26353d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 26363d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 26376f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 26386f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 2639a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 26403d14c5d2SYehuda Sadeh osdc->num_requests = 0; 26413d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 26423d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2643a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 2644a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 2645a40c4f10SYehuda Sadeh osdc->event_count = 0; 26463d14c5d2SYehuda Sadeh 26473d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 2648a319bf56SIlya Dryomov round_jiffies_relative(osdc->client->options->osd_idle_ttl)); 26493d14c5d2SYehuda Sadeh 26503d14c5d2SYehuda Sadeh err = -ENOMEM; 26513d14c5d2SYehuda Sadeh osdc->req_mempool = mempool_create_kmalloc_pool(10, 26523d14c5d2SYehuda Sadeh sizeof(struct ceph_osd_request)); 26533d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 26543d14c5d2SYehuda Sadeh goto out; 26553d14c5d2SYehuda Sadeh 2656d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2657d50b409fSSage Weil OSD_OP_FRONT_LEN, 10, true, 26583d14c5d2SYehuda Sadeh "osd_op"); 26593d14c5d2SYehuda Sadeh if (err < 0) 26603d14c5d2SYehuda Sadeh goto out_mempool; 2661d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 26623d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, 10, true, 26633d14c5d2SYehuda Sadeh "osd_op_reply"); 26643d14c5d2SYehuda Sadeh if (err < 0) 26653d14c5d2SYehuda Sadeh goto out_msgpool; 2666a40c4f10SYehuda Sadeh 2667dbcae088SDan Carpenter err = -ENOMEM; 2668a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2669dbcae088SDan Carpenter if (!osdc->notify_wq) 2670c172ec5cSIlya Dryomov goto out_msgpool_reply; 2671c172ec5cSIlya Dryomov 26723d14c5d2SYehuda Sadeh return 0; 26733d14c5d2SYehuda Sadeh 2674c172ec5cSIlya Dryomov out_msgpool_reply: 2675c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 26763d14c5d2SYehuda Sadeh out_msgpool: 26773d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 26783d14c5d2SYehuda Sadeh out_mempool: 26793d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 26803d14c5d2SYehuda Sadeh out: 26813d14c5d2SYehuda Sadeh return err; 26823d14c5d2SYehuda Sadeh } 26833d14c5d2SYehuda Sadeh 26843d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 26853d14c5d2SYehuda Sadeh { 2686a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2687a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 26883d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 26893d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 26903d14c5d2SYehuda Sadeh if (osdc->osdmap) { 26913d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 26923d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 26933d14c5d2SYehuda Sadeh } 2694aca420bcSSage Weil remove_all_osds(osdc); 26953d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 26963d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 26973d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 26983d14c5d2SYehuda Sadeh } 26993d14c5d2SYehuda Sadeh 27003d14c5d2SYehuda Sadeh /* 27013d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 27023d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 27033d14c5d2SYehuda Sadeh */ 27043d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 27053d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 27063d14c5d2SYehuda Sadeh u64 off, u64 *plen, 27073d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2708b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 27093d14c5d2SYehuda Sadeh { 27103d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 27113d14c5d2SYehuda Sadeh int rc = 0; 27123d14c5d2SYehuda Sadeh 27133d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 27143d14c5d2SYehuda Sadeh vino.snap, off, *plen); 2715715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 27163d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 2717acead002SAlex Elder NULL, truncate_seq, truncate_size, 2718153e5167SAlex Elder false); 27196816282dSSage Weil if (IS_ERR(req)) 27206816282dSSage Weil return PTR_ERR(req); 27213d14c5d2SYehuda Sadeh 27223d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 27230fff87ecSAlex Elder 2724406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 2725a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 27263d14c5d2SYehuda Sadeh 2727e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 272843bfe5deSAlex Elder off, *plen, *plen, page_align); 27293d14c5d2SYehuda Sadeh 273079528734SAlex Elder ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); 273102ee07d3SAlex Elder 27323d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 27333d14c5d2SYehuda Sadeh if (!rc) 27343d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 27353d14c5d2SYehuda Sadeh 27363d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 27373d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 27383d14c5d2SYehuda Sadeh return rc; 27393d14c5d2SYehuda Sadeh } 27403d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 27413d14c5d2SYehuda Sadeh 27423d14c5d2SYehuda Sadeh /* 27433d14c5d2SYehuda Sadeh * do a synchronous write on N pages 27443d14c5d2SYehuda Sadeh */ 27453d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 27463d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 27473d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 27483d14c5d2SYehuda Sadeh u64 off, u64 len, 27493d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 27503d14c5d2SYehuda Sadeh struct timespec *mtime, 275124808826SAlex Elder struct page **pages, int num_pages) 27523d14c5d2SYehuda Sadeh { 27533d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 27543d14c5d2SYehuda Sadeh int rc = 0; 2755b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 27563d14c5d2SYehuda Sadeh 2757acead002SAlex Elder BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ 2758715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 27593d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 276024808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2761acead002SAlex Elder snapc, truncate_seq, truncate_size, 2762153e5167SAlex Elder true); 27636816282dSSage Weil if (IS_ERR(req)) 27646816282dSSage Weil return PTR_ERR(req); 27653d14c5d2SYehuda Sadeh 27663d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 2767406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 276843bfe5deSAlex Elder false, false); 276943bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 27703d14c5d2SYehuda Sadeh 277179528734SAlex Elder ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); 277202ee07d3SAlex Elder 277387f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 27743d14c5d2SYehuda Sadeh if (!rc) 27753d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 27763d14c5d2SYehuda Sadeh 27773d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 27783d14c5d2SYehuda Sadeh if (rc == 0) 27793d14c5d2SYehuda Sadeh rc = len; 27803d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 27813d14c5d2SYehuda Sadeh return rc; 27823d14c5d2SYehuda Sadeh } 27833d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 27843d14c5d2SYehuda Sadeh 27855522ae0bSAlex Elder int ceph_osdc_setup(void) 27865522ae0bSAlex Elder { 27875522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 27885522ae0bSAlex Elder ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", 27895522ae0bSAlex Elder sizeof (struct ceph_osd_request), 27905522ae0bSAlex Elder __alignof__(struct ceph_osd_request), 27915522ae0bSAlex Elder 0, NULL); 27925522ae0bSAlex Elder 27935522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 27945522ae0bSAlex Elder } 27955522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 27965522ae0bSAlex Elder 27975522ae0bSAlex Elder void ceph_osdc_cleanup(void) 27985522ae0bSAlex Elder { 27995522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 28005522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 28015522ae0bSAlex Elder ceph_osd_request_cache = NULL; 28025522ae0bSAlex Elder } 28035522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 28045522ae0bSAlex Elder 28053d14c5d2SYehuda Sadeh /* 28063d14c5d2SYehuda Sadeh * handle incoming message 28073d14c5d2SYehuda Sadeh */ 28083d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 28093d14c5d2SYehuda Sadeh { 28103d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28113d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 28123d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 28133d14c5d2SYehuda Sadeh 28143d14c5d2SYehuda Sadeh if (!osd) 28153d14c5d2SYehuda Sadeh goto out; 28163d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 28173d14c5d2SYehuda Sadeh 28183d14c5d2SYehuda Sadeh switch (type) { 28193d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 28203d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 28213d14c5d2SYehuda Sadeh break; 28223d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 282370cf052dSShraddha Barke handle_reply(osdc, msg); 28243d14c5d2SYehuda Sadeh break; 2825a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2826a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2827a40c4f10SYehuda Sadeh break; 28283d14c5d2SYehuda Sadeh 28293d14c5d2SYehuda Sadeh default: 28303d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 28313d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 28323d14c5d2SYehuda Sadeh } 28333d14c5d2SYehuda Sadeh out: 28343d14c5d2SYehuda Sadeh ceph_msg_put(msg); 28353d14c5d2SYehuda Sadeh } 28363d14c5d2SYehuda Sadeh 28373d14c5d2SYehuda Sadeh /* 2838d15f9d69SIlya Dryomov * Lookup and return message for incoming reply. Don't try to do 2839d15f9d69SIlya Dryomov * anything about a larger than preallocated data portion of the 2840d15f9d69SIlya Dryomov * message at the moment - for now, just skip the message. 28413d14c5d2SYehuda Sadeh */ 28423d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 28433d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 28443d14c5d2SYehuda Sadeh int *skip) 28453d14c5d2SYehuda Sadeh { 28463d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28473d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 28483d14c5d2SYehuda Sadeh struct ceph_msg *m; 28493d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 28503f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 28513d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 28523d14c5d2SYehuda Sadeh u64 tid; 28533d14c5d2SYehuda Sadeh 28543d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 28553d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 28563d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 28573d14c5d2SYehuda Sadeh if (!req) { 2858cd8140c6SIlya Dryomov dout("%s osd%d tid %llu unknown, skipping\n", __func__, 2859cd8140c6SIlya Dryomov osd->o_osd, tid); 28603d14c5d2SYehuda Sadeh m = NULL; 2861d15f9d69SIlya Dryomov *skip = 1; 28623d14c5d2SYehuda Sadeh goto out; 28633d14c5d2SYehuda Sadeh } 28643d14c5d2SYehuda Sadeh 28658921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 28663d14c5d2SYehuda Sadeh 2867f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 2868d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu front %d > preallocated %d\n", 2869d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, front_len, 2870d15f9d69SIlya Dryomov req->r_reply->front_alloc_len); 28713f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 28723f0a4ac5SIlya Dryomov false); 28733d14c5d2SYehuda Sadeh if (!m) 28743d14c5d2SYehuda Sadeh goto out; 28753d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 28763d14c5d2SYehuda Sadeh req->r_reply = m; 28773d14c5d2SYehuda Sadeh } 28783d14c5d2SYehuda Sadeh 2879d15f9d69SIlya Dryomov if (data_len > req->r_reply->data_length) { 2880d15f9d69SIlya Dryomov pr_warn("%s osd%d tid %llu data %d > preallocated %zu, skipping\n", 2881d15f9d69SIlya Dryomov __func__, osd->o_osd, req->r_tid, data_len, 2882d15f9d69SIlya Dryomov req->r_reply->data_length); 28833d14c5d2SYehuda Sadeh m = NULL; 2884d15f9d69SIlya Dryomov *skip = 1; 28853d14c5d2SYehuda Sadeh goto out; 28863d14c5d2SYehuda Sadeh } 2887d15f9d69SIlya Dryomov 2888d15f9d69SIlya Dryomov m = ceph_msg_get(req->r_reply); 28893d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 28903d14c5d2SYehuda Sadeh 28913d14c5d2SYehuda Sadeh out: 28923d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 28933d14c5d2SYehuda Sadeh return m; 28943d14c5d2SYehuda Sadeh } 28953d14c5d2SYehuda Sadeh 28963d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 28973d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 28983d14c5d2SYehuda Sadeh int *skip) 28993d14c5d2SYehuda Sadeh { 29003d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29013d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 29023d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 29033d14c5d2SYehuda Sadeh 29041c20f2d2SAlex Elder *skip = 0; 29053d14c5d2SYehuda Sadeh switch (type) { 29063d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2907a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2908b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 29093d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 29103d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 29113d14c5d2SYehuda Sadeh default: 29123d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 29133d14c5d2SYehuda Sadeh osd->o_osd); 29143d14c5d2SYehuda Sadeh *skip = 1; 29153d14c5d2SYehuda Sadeh return NULL; 29163d14c5d2SYehuda Sadeh } 29173d14c5d2SYehuda Sadeh } 29183d14c5d2SYehuda Sadeh 29193d14c5d2SYehuda Sadeh /* 29203d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 29213d14c5d2SYehuda Sadeh */ 29223d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 29233d14c5d2SYehuda Sadeh { 29243d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29253d14c5d2SYehuda Sadeh if (get_osd(osd)) 29263d14c5d2SYehuda Sadeh return con; 29273d14c5d2SYehuda Sadeh return NULL; 29283d14c5d2SYehuda Sadeh } 29293d14c5d2SYehuda Sadeh 29303d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 29313d14c5d2SYehuda Sadeh { 29323d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29333d14c5d2SYehuda Sadeh put_osd(osd); 29343d14c5d2SYehuda Sadeh } 29353d14c5d2SYehuda Sadeh 29363d14c5d2SYehuda Sadeh /* 29373d14c5d2SYehuda Sadeh * authentication 29383d14c5d2SYehuda Sadeh */ 2939a3530df3SAlex Elder /* 2940a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2941a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2942a3530df3SAlex Elder */ 2943a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 29448f43fb53SAlex Elder int *proto, int force_new) 29453d14c5d2SYehuda Sadeh { 29463d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 29473d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 29483d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 294974f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 29503d14c5d2SYehuda Sadeh 295174f1869fSAlex Elder if (force_new && auth->authorizer) { 295227859f97SSage Weil ceph_auth_destroy_authorizer(ac, auth->authorizer); 295374f1869fSAlex Elder auth->authorizer = NULL; 29543d14c5d2SYehuda Sadeh } 295527859f97SSage Weil if (!auth->authorizer) { 295627859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2957a3530df3SAlex Elder auth); 29583d14c5d2SYehuda Sadeh if (ret) 2959a3530df3SAlex Elder return ERR_PTR(ret); 296027859f97SSage Weil } else { 296127859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 29620bed9b5cSSage Weil auth); 29630bed9b5cSSage Weil if (ret) 29640bed9b5cSSage Weil return ERR_PTR(ret); 29653d14c5d2SYehuda Sadeh } 29663d14c5d2SYehuda Sadeh *proto = ac->protocol; 296774f1869fSAlex Elder 2968a3530df3SAlex Elder return auth; 29693d14c5d2SYehuda Sadeh } 29703d14c5d2SYehuda Sadeh 29713d14c5d2SYehuda Sadeh 29723d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 29733d14c5d2SYehuda Sadeh { 29743d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 29753d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 29763d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 29773d14c5d2SYehuda Sadeh 297827859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 29793d14c5d2SYehuda Sadeh } 29803d14c5d2SYehuda Sadeh 29813d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 29823d14c5d2SYehuda Sadeh { 29833d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 29843d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 29853d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 29863d14c5d2SYehuda Sadeh 298727859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 29883d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 29893d14c5d2SYehuda Sadeh } 29903d14c5d2SYehuda Sadeh 299179dbd1baSIlya Dryomov static int osd_sign_message(struct ceph_msg *msg) 299233d07337SYan, Zheng { 299379dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 299433d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 299579dbd1baSIlya Dryomov 299633d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 299733d07337SYan, Zheng } 299833d07337SYan, Zheng 299979dbd1baSIlya Dryomov static int osd_check_message_signature(struct ceph_msg *msg) 300033d07337SYan, Zheng { 300179dbd1baSIlya Dryomov struct ceph_osd *o = msg->con->private; 300233d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 300379dbd1baSIlya Dryomov 300433d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 300533d07337SYan, Zheng } 300633d07337SYan, Zheng 30073d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 30083d14c5d2SYehuda Sadeh .get = get_osd_con, 30093d14c5d2SYehuda Sadeh .put = put_osd_con, 30103d14c5d2SYehuda Sadeh .dispatch = dispatch, 30113d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 30123d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 30133d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 30143d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 301579dbd1baSIlya Dryomov .sign_message = osd_sign_message, 301679dbd1baSIlya Dryomov .check_message_signature = osd_check_message_signature, 30173d14c5d2SYehuda Sadeh .fault = osd_reset, 30183d14c5d2SYehuda Sadeh }; 3019