1a4ce40a9SAlex Elder 23d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 33d14c5d2SYehuda Sadeh 43d14c5d2SYehuda Sadeh #include <linux/module.h> 53d14c5d2SYehuda Sadeh #include <linux/err.h> 63d14c5d2SYehuda Sadeh #include <linux/highmem.h> 73d14c5d2SYehuda Sadeh #include <linux/mm.h> 83d14c5d2SYehuda Sadeh #include <linux/pagemap.h> 93d14c5d2SYehuda Sadeh #include <linux/slab.h> 103d14c5d2SYehuda Sadeh #include <linux/uaccess.h> 113d14c5d2SYehuda Sadeh #ifdef CONFIG_BLOCK 123d14c5d2SYehuda Sadeh #include <linux/bio.h> 133d14c5d2SYehuda Sadeh #endif 143d14c5d2SYehuda Sadeh 153d14c5d2SYehuda Sadeh #include <linux/ceph/libceph.h> 163d14c5d2SYehuda Sadeh #include <linux/ceph/osd_client.h> 173d14c5d2SYehuda Sadeh #include <linux/ceph/messenger.h> 183d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 193d14c5d2SYehuda Sadeh #include <linux/ceph/auth.h> 203d14c5d2SYehuda Sadeh #include <linux/ceph/pagelist.h> 213d14c5d2SYehuda Sadeh 223d14c5d2SYehuda Sadeh #define OSD_OP_FRONT_LEN 4096 233d14c5d2SYehuda Sadeh #define OSD_OPREPLY_FRONT_LEN 512 243d14c5d2SYehuda Sadeh 255522ae0bSAlex Elder static struct kmem_cache *ceph_osd_request_cache; 265522ae0bSAlex Elder 273d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops; 283d14c5d2SYehuda Sadeh 29f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc); 306f6c7006SSage Weil static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd); 31a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 32a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 332cc6128aSIlya Dryomov static void __unregister_request(struct ceph_osd_client *osdc, 342cc6128aSIlya Dryomov struct ceph_osd_request *req); 35a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 36a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 372cc6128aSIlya Dryomov static void __enqueue_request(struct ceph_osd_request *req); 3856e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 39a40c4f10SYehuda Sadeh struct ceph_osd_request *req); 403d14c5d2SYehuda Sadeh 413d14c5d2SYehuda Sadeh /* 423d14c5d2SYehuda Sadeh * Implement client access to distributed object storage cluster. 433d14c5d2SYehuda Sadeh * 443d14c5d2SYehuda Sadeh * All data objects are stored within a cluster/cloud of OSDs, or 453d14c5d2SYehuda Sadeh * "object storage devices." (Note that Ceph OSDs have _nothing_ to 463d14c5d2SYehuda Sadeh * do with the T10 OSD extensions to SCSI.) Ceph OSDs are simply 473d14c5d2SYehuda Sadeh * remote daemons serving up and coordinating consistent and safe 483d14c5d2SYehuda Sadeh * access to storage. 493d14c5d2SYehuda Sadeh * 503d14c5d2SYehuda Sadeh * Cluster membership and the mapping of data objects onto storage devices 513d14c5d2SYehuda Sadeh * are described by the osd map. 523d14c5d2SYehuda Sadeh * 533d14c5d2SYehuda Sadeh * We keep track of pending OSD requests (read, write), resubmit 543d14c5d2SYehuda Sadeh * requests to different OSDs when the cluster topology/data layout 553d14c5d2SYehuda Sadeh * change, or retry the affected requests when the communications 563d14c5d2SYehuda Sadeh * channel with an OSD is reset. 573d14c5d2SYehuda Sadeh */ 583d14c5d2SYehuda Sadeh 593d14c5d2SYehuda Sadeh /* 603d14c5d2SYehuda Sadeh * calculate the mapping of a file extent onto an object, and fill out the 613d14c5d2SYehuda Sadeh * request accordingly. shorten extent as necessary if it crosses an 623d14c5d2SYehuda Sadeh * object boundary. 633d14c5d2SYehuda Sadeh * 643d14c5d2SYehuda Sadeh * fill osd op in request message. 653d14c5d2SYehuda Sadeh */ 66dbe0fc41SAlex Elder static int calc_layout(struct ceph_file_layout *layout, u64 off, u64 *plen, 67a19dadfbSAlex Elder u64 *objnum, u64 *objoff, u64 *objlen) 683d14c5d2SYehuda Sadeh { 6960e56f13SAlex Elder u64 orig_len = *plen; 70d63b77f4SSage Weil int r; 713d14c5d2SYehuda Sadeh 7260e56f13SAlex Elder /* object extent? */ 7375d1c941SAlex Elder r = ceph_calc_file_object_mapping(layout, off, orig_len, objnum, 7475d1c941SAlex Elder objoff, objlen); 75d63b77f4SSage Weil if (r < 0) 76d63b77f4SSage Weil return r; 7775d1c941SAlex Elder if (*objlen < orig_len) { 7875d1c941SAlex Elder *plen = *objlen; 7960e56f13SAlex Elder dout(" skipping last %llu, final file extent %llu~%llu\n", 8060e56f13SAlex Elder orig_len - *plen, off, *plen); 8160e56f13SAlex Elder } 8260e56f13SAlex Elder 8375d1c941SAlex Elder dout("calc_layout objnum=%llx %llu~%llu\n", *objnum, *objoff, *objlen); 843d14c5d2SYehuda Sadeh 853ff5f385SAlex Elder return 0; 863d14c5d2SYehuda Sadeh } 873d14c5d2SYehuda Sadeh 88c54d47bfSAlex Elder static void ceph_osd_data_init(struct ceph_osd_data *osd_data) 89c54d47bfSAlex Elder { 90c54d47bfSAlex Elder memset(osd_data, 0, sizeof (*osd_data)); 91c54d47bfSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_NONE; 92c54d47bfSAlex Elder } 93c54d47bfSAlex Elder 94a4ce40a9SAlex Elder static void ceph_osd_data_pages_init(struct ceph_osd_data *osd_data, 9543bfe5deSAlex Elder struct page **pages, u64 length, u32 alignment, 9643bfe5deSAlex Elder bool pages_from_pool, bool own_pages) 9743bfe5deSAlex Elder { 9843bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGES; 9943bfe5deSAlex Elder osd_data->pages = pages; 10043bfe5deSAlex Elder osd_data->length = length; 10143bfe5deSAlex Elder osd_data->alignment = alignment; 10243bfe5deSAlex Elder osd_data->pages_from_pool = pages_from_pool; 10343bfe5deSAlex Elder osd_data->own_pages = own_pages; 10443bfe5deSAlex Elder } 10543bfe5deSAlex Elder 106a4ce40a9SAlex Elder static void ceph_osd_data_pagelist_init(struct ceph_osd_data *osd_data, 10743bfe5deSAlex Elder struct ceph_pagelist *pagelist) 10843bfe5deSAlex Elder { 10943bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_PAGELIST; 11043bfe5deSAlex Elder osd_data->pagelist = pagelist; 11143bfe5deSAlex Elder } 11243bfe5deSAlex Elder 11343bfe5deSAlex Elder #ifdef CONFIG_BLOCK 114a4ce40a9SAlex Elder static void ceph_osd_data_bio_init(struct ceph_osd_data *osd_data, 11543bfe5deSAlex Elder struct bio *bio, size_t bio_length) 11643bfe5deSAlex Elder { 11743bfe5deSAlex Elder osd_data->type = CEPH_OSD_DATA_TYPE_BIO; 11843bfe5deSAlex Elder osd_data->bio = bio; 11943bfe5deSAlex Elder osd_data->bio_length = bio_length; 12043bfe5deSAlex Elder } 12143bfe5deSAlex Elder #endif /* CONFIG_BLOCK */ 12243bfe5deSAlex Elder 123863c7eb5SAlex Elder #define osd_req_op_data(oreq, whch, typ, fld) \ 124863c7eb5SAlex Elder ({ \ 125863c7eb5SAlex Elder BUG_ON(whch >= (oreq)->r_num_ops); \ 126863c7eb5SAlex Elder &(oreq)->r_ops[whch].typ.fld; \ 127863c7eb5SAlex Elder }) 128863c7eb5SAlex Elder 12949719778SAlex Elder static struct ceph_osd_data * 13049719778SAlex Elder osd_req_op_raw_data_in(struct ceph_osd_request *osd_req, unsigned int which) 13149719778SAlex Elder { 13249719778SAlex Elder BUG_ON(which >= osd_req->r_num_ops); 13349719778SAlex Elder 13449719778SAlex Elder return &osd_req->r_ops[which].raw_data_in; 13549719778SAlex Elder } 13649719778SAlex Elder 137a4ce40a9SAlex Elder struct ceph_osd_data * 138a4ce40a9SAlex Elder osd_req_op_extent_osd_data(struct ceph_osd_request *osd_req, 139406e2c9fSAlex Elder unsigned int which) 140a4ce40a9SAlex Elder { 141863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, extent, osd_data); 142a4ce40a9SAlex Elder } 143a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data); 144a4ce40a9SAlex Elder 145a4ce40a9SAlex Elder struct ceph_osd_data * 146a4ce40a9SAlex Elder osd_req_op_cls_response_data(struct ceph_osd_request *osd_req, 147a4ce40a9SAlex Elder unsigned int which) 148a4ce40a9SAlex Elder { 149863c7eb5SAlex Elder return osd_req_op_data(osd_req, which, cls, response_data); 150a4ce40a9SAlex Elder } 151a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data); /* ??? */ 152a4ce40a9SAlex Elder 15349719778SAlex Elder void osd_req_op_raw_data_in_pages(struct ceph_osd_request *osd_req, 15449719778SAlex Elder unsigned int which, struct page **pages, 15549719778SAlex Elder u64 length, u32 alignment, 15649719778SAlex Elder bool pages_from_pool, bool own_pages) 15749719778SAlex Elder { 15849719778SAlex Elder struct ceph_osd_data *osd_data; 15949719778SAlex Elder 16049719778SAlex Elder osd_data = osd_req_op_raw_data_in(osd_req, which); 16149719778SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 16249719778SAlex Elder pages_from_pool, own_pages); 16349719778SAlex Elder } 16449719778SAlex Elder EXPORT_SYMBOL(osd_req_op_raw_data_in_pages); 16549719778SAlex Elder 166a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *osd_req, 167406e2c9fSAlex Elder unsigned int which, struct page **pages, 168406e2c9fSAlex Elder u64 length, u32 alignment, 169a4ce40a9SAlex Elder bool pages_from_pool, bool own_pages) 170a4ce40a9SAlex Elder { 171a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 172a4ce40a9SAlex Elder 173863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 174a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 175a4ce40a9SAlex Elder pages_from_pool, own_pages); 176a4ce40a9SAlex Elder } 177a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pages); 178a4ce40a9SAlex Elder 179a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *osd_req, 180406e2c9fSAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 181a4ce40a9SAlex Elder { 182a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 183a4ce40a9SAlex Elder 184863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 185a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 186a4ce40a9SAlex Elder } 187a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_pagelist); 188a4ce40a9SAlex Elder 189a4ce40a9SAlex Elder #ifdef CONFIG_BLOCK 190a4ce40a9SAlex Elder void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, 191406e2c9fSAlex Elder unsigned int which, struct bio *bio, size_t bio_length) 192a4ce40a9SAlex Elder { 193a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 194863c7eb5SAlex Elder 195863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, extent, osd_data); 196a4ce40a9SAlex Elder ceph_osd_data_bio_init(osd_data, bio, bio_length); 197a4ce40a9SAlex Elder } 198a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_osd_data_bio); 199a4ce40a9SAlex Elder #endif /* CONFIG_BLOCK */ 200a4ce40a9SAlex Elder 201a4ce40a9SAlex Elder static void osd_req_op_cls_request_info_pagelist( 202a4ce40a9SAlex Elder struct ceph_osd_request *osd_req, 203a4ce40a9SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 204a4ce40a9SAlex Elder { 205a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 206a4ce40a9SAlex Elder 207863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_info); 208a4ce40a9SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 209a4ce40a9SAlex Elder } 210a4ce40a9SAlex Elder 21104017e29SAlex Elder void osd_req_op_cls_request_data_pagelist( 21204017e29SAlex Elder struct ceph_osd_request *osd_req, 21304017e29SAlex Elder unsigned int which, struct ceph_pagelist *pagelist) 21404017e29SAlex Elder { 21504017e29SAlex Elder struct ceph_osd_data *osd_data; 21604017e29SAlex Elder 217863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 21804017e29SAlex Elder ceph_osd_data_pagelist_init(osd_data, pagelist); 21904017e29SAlex Elder } 22004017e29SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pagelist); 22104017e29SAlex Elder 2226c57b554SAlex Elder void osd_req_op_cls_request_data_pages(struct ceph_osd_request *osd_req, 2236c57b554SAlex Elder unsigned int which, struct page **pages, u64 length, 2246c57b554SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 2256c57b554SAlex Elder { 2266c57b554SAlex Elder struct ceph_osd_data *osd_data; 2276c57b554SAlex Elder 2286c57b554SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, request_data); 2296c57b554SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 2306c57b554SAlex Elder pages_from_pool, own_pages); 2316c57b554SAlex Elder } 2326c57b554SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_request_data_pages); 2336c57b554SAlex Elder 234a4ce40a9SAlex Elder void osd_req_op_cls_response_data_pages(struct ceph_osd_request *osd_req, 235a4ce40a9SAlex Elder unsigned int which, struct page **pages, u64 length, 236a4ce40a9SAlex Elder u32 alignment, bool pages_from_pool, bool own_pages) 237a4ce40a9SAlex Elder { 238a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 239a4ce40a9SAlex Elder 240863c7eb5SAlex Elder osd_data = osd_req_op_data(osd_req, which, cls, response_data); 241a4ce40a9SAlex Elder ceph_osd_data_pages_init(osd_data, pages, length, alignment, 242a4ce40a9SAlex Elder pages_from_pool, own_pages); 243a4ce40a9SAlex Elder } 244a4ce40a9SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_response_data_pages); 245a4ce40a9SAlex Elder 24623c08a9cSAlex Elder static u64 ceph_osd_data_length(struct ceph_osd_data *osd_data) 24723c08a9cSAlex Elder { 24823c08a9cSAlex Elder switch (osd_data->type) { 24923c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_NONE: 25023c08a9cSAlex Elder return 0; 25123c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGES: 25223c08a9cSAlex Elder return osd_data->length; 25323c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_PAGELIST: 25423c08a9cSAlex Elder return (u64)osd_data->pagelist->length; 25523c08a9cSAlex Elder #ifdef CONFIG_BLOCK 25623c08a9cSAlex Elder case CEPH_OSD_DATA_TYPE_BIO: 25723c08a9cSAlex Elder return (u64)osd_data->bio_length; 25823c08a9cSAlex Elder #endif /* CONFIG_BLOCK */ 25923c08a9cSAlex Elder default: 26023c08a9cSAlex Elder WARN(true, "unrecognized data type %d\n", (int)osd_data->type); 26123c08a9cSAlex Elder return 0; 26223c08a9cSAlex Elder } 26323c08a9cSAlex Elder } 26423c08a9cSAlex Elder 265c54d47bfSAlex Elder static void ceph_osd_data_release(struct ceph_osd_data *osd_data) 266c54d47bfSAlex Elder { 2675476492fSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES && osd_data->own_pages) { 268c54d47bfSAlex Elder int num_pages; 269c54d47bfSAlex Elder 270c54d47bfSAlex Elder num_pages = calc_pages_for((u64)osd_data->alignment, 271c54d47bfSAlex Elder (u64)osd_data->length); 272c54d47bfSAlex Elder ceph_release_page_vector(osd_data->pages, num_pages); 273c54d47bfSAlex Elder } 2745476492fSAlex Elder ceph_osd_data_init(osd_data); 2755476492fSAlex Elder } 2765476492fSAlex Elder 2775476492fSAlex Elder static void osd_req_op_data_release(struct ceph_osd_request *osd_req, 2785476492fSAlex Elder unsigned int which) 2795476492fSAlex Elder { 2805476492fSAlex Elder struct ceph_osd_req_op *op; 2815476492fSAlex Elder 2825476492fSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 2835476492fSAlex Elder op = &osd_req->r_ops[which]; 2845476492fSAlex Elder 2855476492fSAlex Elder switch (op->op) { 2865476492fSAlex Elder case CEPH_OSD_OP_READ: 2875476492fSAlex Elder case CEPH_OSD_OP_WRITE: 2885476492fSAlex Elder ceph_osd_data_release(&op->extent.osd_data); 2895476492fSAlex Elder break; 2905476492fSAlex Elder case CEPH_OSD_OP_CALL: 2915476492fSAlex Elder ceph_osd_data_release(&op->cls.request_info); 29204017e29SAlex Elder ceph_osd_data_release(&op->cls.request_data); 2935476492fSAlex Elder ceph_osd_data_release(&op->cls.response_data); 2945476492fSAlex Elder break; 295d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 296d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 297d74b50beSYan, Zheng ceph_osd_data_release(&op->xattr.osd_data); 298d74b50beSYan, Zheng break; 29966ba609fSYan, Zheng case CEPH_OSD_OP_STAT: 30066ba609fSYan, Zheng ceph_osd_data_release(&op->raw_data_in); 30166ba609fSYan, Zheng break; 3025476492fSAlex Elder default: 3035476492fSAlex Elder break; 3045476492fSAlex Elder } 305c54d47bfSAlex Elder } 306c54d47bfSAlex Elder 3073d14c5d2SYehuda Sadeh /* 3083d14c5d2SYehuda Sadeh * requests 3093d14c5d2SYehuda Sadeh */ 3109e94af20SIlya Dryomov static void ceph_osdc_release_request(struct kref *kref) 3113d14c5d2SYehuda Sadeh { 3129e94af20SIlya Dryomov struct ceph_osd_request *req = container_of(kref, 3139e94af20SIlya Dryomov struct ceph_osd_request, r_kref); 3145476492fSAlex Elder unsigned int which; 3153d14c5d2SYehuda Sadeh 3169e94af20SIlya Dryomov dout("%s %p (r_request %p r_reply %p)\n", __func__, req, 3179e94af20SIlya Dryomov req->r_request, req->r_reply); 3186562d661SIlya Dryomov WARN_ON(!RB_EMPTY_NODE(&req->r_node)); 3196562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_req_lru_item)); 3206562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_osd_item)); 3216562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_linger_item)); 3226562d661SIlya Dryomov WARN_ON(!list_empty(&req->r_linger_osd_item)); 3236562d661SIlya Dryomov WARN_ON(req->r_osd); 3249e94af20SIlya Dryomov 3253d14c5d2SYehuda Sadeh if (req->r_request) 3263d14c5d2SYehuda Sadeh ceph_msg_put(req->r_request); 327ace6d3a9SAlex Elder if (req->r_reply) { 3288921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 329ab8cb34aSAlex Elder ceph_msg_put(req->r_reply); 330ace6d3a9SAlex Elder } 3310fff87ecSAlex Elder 3325476492fSAlex Elder for (which = 0; which < req->r_num_ops; which++) 3335476492fSAlex Elder osd_req_op_data_release(req, which); 3340fff87ecSAlex Elder 3353d14c5d2SYehuda Sadeh ceph_put_snap_context(req->r_snapc); 3363d14c5d2SYehuda Sadeh if (req->r_mempool) 3373d14c5d2SYehuda Sadeh mempool_free(req, req->r_osdc->req_mempool); 3383d14c5d2SYehuda Sadeh else 3395522ae0bSAlex Elder kmem_cache_free(ceph_osd_request_cache, req); 3405522ae0bSAlex Elder 3413d14c5d2SYehuda Sadeh } 3429e94af20SIlya Dryomov 3439e94af20SIlya Dryomov void ceph_osdc_get_request(struct ceph_osd_request *req) 3449e94af20SIlya Dryomov { 3459e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3469e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3479e94af20SIlya Dryomov kref_get(&req->r_kref); 3489e94af20SIlya Dryomov } 3499e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_get_request); 3509e94af20SIlya Dryomov 3519e94af20SIlya Dryomov void ceph_osdc_put_request(struct ceph_osd_request *req) 3529e94af20SIlya Dryomov { 3539e94af20SIlya Dryomov dout("%s %p (was %d)\n", __func__, req, 3549e94af20SIlya Dryomov atomic_read(&req->r_kref.refcount)); 3559e94af20SIlya Dryomov kref_put(&req->r_kref, ceph_osdc_release_request); 3569e94af20SIlya Dryomov } 3579e94af20SIlya Dryomov EXPORT_SYMBOL(ceph_osdc_put_request); 3583d14c5d2SYehuda Sadeh 3593d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc, 3603d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 3611b83bef2SSage Weil unsigned int num_ops, 3623d14c5d2SYehuda Sadeh bool use_mempool, 36354a54007SAlex Elder gfp_t gfp_flags) 3643d14c5d2SYehuda Sadeh { 3653d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 3663d14c5d2SYehuda Sadeh struct ceph_msg *msg; 3671b83bef2SSage Weil size_t msg_size; 3683d14c5d2SYehuda Sadeh 36979528734SAlex Elder BUILD_BUG_ON(CEPH_OSD_MAX_OP > U16_MAX); 37079528734SAlex Elder BUG_ON(num_ops > CEPH_OSD_MAX_OP); 37179528734SAlex Elder 3721b83bef2SSage Weil msg_size = 4 + 4 + 8 + 8 + 4+8; 3731b83bef2SSage Weil msg_size += 2 + 4 + 8 + 4 + 4; /* oloc */ 3741b83bef2SSage Weil msg_size += 1 + 8 + 4 + 4; /* pg_t */ 3752d0ebc5dSIlya Dryomov msg_size += 4 + CEPH_MAX_OID_NAME_LEN; /* oid */ 3761b83bef2SSage Weil msg_size += 2 + num_ops*sizeof(struct ceph_osd_op); 3771b83bef2SSage Weil msg_size += 8; /* snapid */ 3781b83bef2SSage Weil msg_size += 8; /* snap_seq */ 3791b83bef2SSage Weil msg_size += 8 * (snapc ? snapc->num_snaps : 0); /* snaps */ 3801b83bef2SSage Weil msg_size += 4; 3813d14c5d2SYehuda Sadeh 3823d14c5d2SYehuda Sadeh if (use_mempool) { 3833d14c5d2SYehuda Sadeh req = mempool_alloc(osdc->req_mempool, gfp_flags); 3843d14c5d2SYehuda Sadeh memset(req, 0, sizeof(*req)); 3853d14c5d2SYehuda Sadeh } else { 3865522ae0bSAlex Elder req = kmem_cache_zalloc(ceph_osd_request_cache, gfp_flags); 3873d14c5d2SYehuda Sadeh } 3883d14c5d2SYehuda Sadeh if (req == NULL) 3893d14c5d2SYehuda Sadeh return NULL; 3903d14c5d2SYehuda Sadeh 3913d14c5d2SYehuda Sadeh req->r_osdc = osdc; 3923d14c5d2SYehuda Sadeh req->r_mempool = use_mempool; 39379528734SAlex Elder req->r_num_ops = num_ops; 3943d14c5d2SYehuda Sadeh 3953d14c5d2SYehuda Sadeh kref_init(&req->r_kref); 3963d14c5d2SYehuda Sadeh init_completion(&req->r_completion); 3973d14c5d2SYehuda Sadeh init_completion(&req->r_safe_completion); 398a978fa20SAlex Elder RB_CLEAR_NODE(&req->r_node); 3993d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&req->r_unsafe_item); 400a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&req->r_linger_item); 4011d0326b1SIlya Dryomov INIT_LIST_HEAD(&req->r_linger_osd_item); 402935b639aSSage Weil INIT_LIST_HEAD(&req->r_req_lru_item); 403cd43045cSSage Weil INIT_LIST_HEAD(&req->r_osd_item); 404cd43045cSSage Weil 4053c972c95SIlya Dryomov req->r_base_oloc.pool = -1; 406205ee118SIlya Dryomov req->r_target_oloc.pool = -1; 40722116525SIlya Dryomov 4083d14c5d2SYehuda Sadeh /* create reply message */ 4093d14c5d2SYehuda Sadeh if (use_mempool) 4103d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op_reply, 0); 4113d14c5d2SYehuda Sadeh else 4123d14c5d2SYehuda Sadeh msg = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, 413b61c2763SSage Weil OSD_OPREPLY_FRONT_LEN, gfp_flags, true); 4143d14c5d2SYehuda Sadeh if (!msg) { 4153d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 4163d14c5d2SYehuda Sadeh return NULL; 4173d14c5d2SYehuda Sadeh } 4183d14c5d2SYehuda Sadeh req->r_reply = msg; 4193d14c5d2SYehuda Sadeh 4203d14c5d2SYehuda Sadeh /* create request message; allow space for oid */ 4213d14c5d2SYehuda Sadeh if (use_mempool) 4223d14c5d2SYehuda Sadeh msg = ceph_msgpool_get(&osdc->msgpool_op, 0); 4233d14c5d2SYehuda Sadeh else 424b61c2763SSage Weil msg = ceph_msg_new(CEPH_MSG_OSD_OP, msg_size, gfp_flags, true); 4253d14c5d2SYehuda Sadeh if (!msg) { 4263d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 4273d14c5d2SYehuda Sadeh return NULL; 4283d14c5d2SYehuda Sadeh } 4293d14c5d2SYehuda Sadeh 4303d14c5d2SYehuda Sadeh memset(msg->front.iov_base, 0, msg->front.iov_len); 4313d14c5d2SYehuda Sadeh 4323d14c5d2SYehuda Sadeh req->r_request = msg; 4333d14c5d2SYehuda Sadeh 4343d14c5d2SYehuda Sadeh return req; 4353d14c5d2SYehuda Sadeh } 4363d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_alloc_request); 4373d14c5d2SYehuda Sadeh 438a8dd0a37SAlex Elder static bool osd_req_opcode_valid(u16 opcode) 439a8dd0a37SAlex Elder { 440a8dd0a37SAlex Elder switch (opcode) { 44170b5bfa3SIlya Dryomov #define GENERATE_CASE(op, opcode, str) case CEPH_OSD_OP_##op: return true; 44270b5bfa3SIlya Dryomov __CEPH_FORALL_OSD_OPS(GENERATE_CASE) 44370b5bfa3SIlya Dryomov #undef GENERATE_CASE 444a8dd0a37SAlex Elder default: 445a8dd0a37SAlex Elder return false; 446a8dd0a37SAlex Elder } 447a8dd0a37SAlex Elder } 448a8dd0a37SAlex Elder 44933803f33SAlex Elder /* 45033803f33SAlex Elder * This is an osd op init function for opcodes that have no data or 45133803f33SAlex Elder * other information associated with them. It also serves as a 45233803f33SAlex Elder * common init routine for all the other init functions, below. 45333803f33SAlex Elder */ 454c99d2d4aSAlex Elder static struct ceph_osd_req_op * 45549719778SAlex Elder _osd_req_op_init(struct ceph_osd_request *osd_req, unsigned int which, 456c99d2d4aSAlex Elder u16 opcode) 45733803f33SAlex Elder { 458c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 459c99d2d4aSAlex Elder 460c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 46133803f33SAlex Elder BUG_ON(!osd_req_opcode_valid(opcode)); 46233803f33SAlex Elder 463c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 46433803f33SAlex Elder memset(op, 0, sizeof (*op)); 46533803f33SAlex Elder op->op = opcode; 466c99d2d4aSAlex Elder 467c99d2d4aSAlex Elder return op; 46833803f33SAlex Elder } 46933803f33SAlex Elder 47049719778SAlex Elder void osd_req_op_init(struct ceph_osd_request *osd_req, 47149719778SAlex Elder unsigned int which, u16 opcode) 47249719778SAlex Elder { 47349719778SAlex Elder (void)_osd_req_op_init(osd_req, which, opcode); 47449719778SAlex Elder } 47549719778SAlex Elder EXPORT_SYMBOL(osd_req_op_init); 47649719778SAlex Elder 477c99d2d4aSAlex Elder void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 478c99d2d4aSAlex Elder unsigned int which, u16 opcode, 47933803f33SAlex Elder u64 offset, u64 length, 48033803f33SAlex Elder u64 truncate_size, u32 truncate_seq) 48133803f33SAlex Elder { 48249719778SAlex Elder struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); 48333803f33SAlex Elder size_t payload_len = 0; 48433803f33SAlex Elder 485ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 486864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE); 48733803f33SAlex Elder 48833803f33SAlex Elder op->extent.offset = offset; 48933803f33SAlex Elder op->extent.length = length; 49033803f33SAlex Elder op->extent.truncate_size = truncate_size; 49133803f33SAlex Elder op->extent.truncate_seq = truncate_seq; 49233803f33SAlex Elder if (opcode == CEPH_OSD_OP_WRITE) 49333803f33SAlex Elder payload_len += length; 49433803f33SAlex Elder 49533803f33SAlex Elder op->payload_len = payload_len; 49633803f33SAlex Elder } 49733803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_extent_init); 49833803f33SAlex Elder 499c99d2d4aSAlex Elder void osd_req_op_extent_update(struct ceph_osd_request *osd_req, 500c99d2d4aSAlex Elder unsigned int which, u64 length) 501e5975c7cSAlex Elder { 502c99d2d4aSAlex Elder struct ceph_osd_req_op *op; 503c99d2d4aSAlex Elder u64 previous; 504c99d2d4aSAlex Elder 505c99d2d4aSAlex Elder BUG_ON(which >= osd_req->r_num_ops); 506c99d2d4aSAlex Elder op = &osd_req->r_ops[which]; 507c99d2d4aSAlex Elder previous = op->extent.length; 508e5975c7cSAlex Elder 509e5975c7cSAlex Elder if (length == previous) 510e5975c7cSAlex Elder return; /* Nothing to do */ 511e5975c7cSAlex Elder BUG_ON(length > previous); 512e5975c7cSAlex Elder 513e5975c7cSAlex Elder op->extent.length = length; 514e5975c7cSAlex Elder op->payload_len -= previous - length; 515e5975c7cSAlex Elder } 516e5975c7cSAlex Elder EXPORT_SYMBOL(osd_req_op_extent_update); 517e5975c7cSAlex Elder 518c99d2d4aSAlex Elder void osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, 51904017e29SAlex Elder u16 opcode, const char *class, const char *method) 52033803f33SAlex Elder { 52149719778SAlex Elder struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); 5225f562df5SAlex Elder struct ceph_pagelist *pagelist; 52333803f33SAlex Elder size_t payload_len = 0; 52433803f33SAlex Elder size_t size; 52533803f33SAlex Elder 52633803f33SAlex Elder BUG_ON(opcode != CEPH_OSD_OP_CALL); 52733803f33SAlex Elder 5285f562df5SAlex Elder pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS); 5295f562df5SAlex Elder BUG_ON(!pagelist); 5305f562df5SAlex Elder ceph_pagelist_init(pagelist); 5315f562df5SAlex Elder 53233803f33SAlex Elder op->cls.class_name = class; 53333803f33SAlex Elder size = strlen(class); 53433803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 53533803f33SAlex Elder op->cls.class_len = size; 5365f562df5SAlex Elder ceph_pagelist_append(pagelist, class, size); 53733803f33SAlex Elder payload_len += size; 53833803f33SAlex Elder 53933803f33SAlex Elder op->cls.method_name = method; 54033803f33SAlex Elder size = strlen(method); 54133803f33SAlex Elder BUG_ON(size > (size_t) U8_MAX); 54233803f33SAlex Elder op->cls.method_len = size; 5435f562df5SAlex Elder ceph_pagelist_append(pagelist, method, size); 54433803f33SAlex Elder payload_len += size; 54533803f33SAlex Elder 546a4ce40a9SAlex Elder osd_req_op_cls_request_info_pagelist(osd_req, which, pagelist); 5475f562df5SAlex Elder 54833803f33SAlex Elder op->cls.argc = 0; /* currently unused */ 54933803f33SAlex Elder 55033803f33SAlex Elder op->payload_len = payload_len; 55133803f33SAlex Elder } 55233803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_cls_init); 5538c042b0dSAlex Elder 554d74b50beSYan, Zheng int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which, 555d74b50beSYan, Zheng u16 opcode, const char *name, const void *value, 556d74b50beSYan, Zheng size_t size, u8 cmp_op, u8 cmp_mode) 557d74b50beSYan, Zheng { 558d74b50beSYan, Zheng struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); 559d74b50beSYan, Zheng struct ceph_pagelist *pagelist; 560d74b50beSYan, Zheng size_t payload_len; 561d74b50beSYan, Zheng 562d74b50beSYan, Zheng BUG_ON(opcode != CEPH_OSD_OP_SETXATTR && opcode != CEPH_OSD_OP_CMPXATTR); 563d74b50beSYan, Zheng 564d74b50beSYan, Zheng pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); 565d74b50beSYan, Zheng if (!pagelist) 566d74b50beSYan, Zheng return -ENOMEM; 567d74b50beSYan, Zheng 568d74b50beSYan, Zheng ceph_pagelist_init(pagelist); 569d74b50beSYan, Zheng 570d74b50beSYan, Zheng payload_len = strlen(name); 571d74b50beSYan, Zheng op->xattr.name_len = payload_len; 572d74b50beSYan, Zheng ceph_pagelist_append(pagelist, name, payload_len); 573d74b50beSYan, Zheng 574d74b50beSYan, Zheng op->xattr.value_len = size; 575d74b50beSYan, Zheng ceph_pagelist_append(pagelist, value, size); 576d74b50beSYan, Zheng payload_len += size; 577d74b50beSYan, Zheng 578d74b50beSYan, Zheng op->xattr.cmp_op = cmp_op; 579d74b50beSYan, Zheng op->xattr.cmp_mode = cmp_mode; 580d74b50beSYan, Zheng 581d74b50beSYan, Zheng ceph_osd_data_pagelist_init(&op->xattr.osd_data, pagelist); 582d74b50beSYan, Zheng op->payload_len = payload_len; 583d74b50beSYan, Zheng return 0; 584d74b50beSYan, Zheng } 585d74b50beSYan, Zheng EXPORT_SYMBOL(osd_req_op_xattr_init); 586d74b50beSYan, Zheng 587c99d2d4aSAlex Elder void osd_req_op_watch_init(struct ceph_osd_request *osd_req, 588c99d2d4aSAlex Elder unsigned int which, u16 opcode, 58933803f33SAlex Elder u64 cookie, u64 version, int flag) 59033803f33SAlex Elder { 59149719778SAlex Elder struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, opcode); 59233803f33SAlex Elder 593c99d2d4aSAlex Elder BUG_ON(opcode != CEPH_OSD_OP_NOTIFY_ACK && opcode != CEPH_OSD_OP_WATCH); 59433803f33SAlex Elder 59533803f33SAlex Elder op->watch.cookie = cookie; 5969ef1ee5aSAlex Elder op->watch.ver = version; 59733803f33SAlex Elder if (opcode == CEPH_OSD_OP_WATCH && flag) 59833803f33SAlex Elder op->watch.flag = (u8)1; 59933803f33SAlex Elder } 60033803f33SAlex Elder EXPORT_SYMBOL(osd_req_op_watch_init); 60133803f33SAlex Elder 602c647b8a8SIlya Dryomov void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req, 603c647b8a8SIlya Dryomov unsigned int which, 604c647b8a8SIlya Dryomov u64 expected_object_size, 605c647b8a8SIlya Dryomov u64 expected_write_size) 606c647b8a8SIlya Dryomov { 607c647b8a8SIlya Dryomov struct ceph_osd_req_op *op = _osd_req_op_init(osd_req, which, 608c647b8a8SIlya Dryomov CEPH_OSD_OP_SETALLOCHINT); 609c647b8a8SIlya Dryomov 610c647b8a8SIlya Dryomov op->alloc_hint.expected_object_size = expected_object_size; 611c647b8a8SIlya Dryomov op->alloc_hint.expected_write_size = expected_write_size; 612c647b8a8SIlya Dryomov 613c647b8a8SIlya Dryomov /* 614c647b8a8SIlya Dryomov * CEPH_OSD_OP_SETALLOCHINT op is advisory and therefore deemed 615c647b8a8SIlya Dryomov * not worth a feature bit. Set FAILOK per-op flag to make 616c647b8a8SIlya Dryomov * sure older osds don't trip over an unsupported opcode. 617c647b8a8SIlya Dryomov */ 618c647b8a8SIlya Dryomov op->flags |= CEPH_OSD_OP_FLAG_FAILOK; 619c647b8a8SIlya Dryomov } 620c647b8a8SIlya Dryomov EXPORT_SYMBOL(osd_req_op_alloc_hint_init); 621c647b8a8SIlya Dryomov 62290af3602SAlex Elder static void ceph_osdc_msg_data_add(struct ceph_msg *msg, 623ec9123c5SAlex Elder struct ceph_osd_data *osd_data) 624ec9123c5SAlex Elder { 625ec9123c5SAlex Elder u64 length = ceph_osd_data_length(osd_data); 626ec9123c5SAlex Elder 627ec9123c5SAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 628ec9123c5SAlex Elder BUG_ON(length > (u64) SIZE_MAX); 629ec9123c5SAlex Elder if (length) 63090af3602SAlex Elder ceph_msg_data_add_pages(msg, osd_data->pages, 631ec9123c5SAlex Elder length, osd_data->alignment); 632ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGELIST) { 633ec9123c5SAlex Elder BUG_ON(!length); 63490af3602SAlex Elder ceph_msg_data_add_pagelist(msg, osd_data->pagelist); 635ec9123c5SAlex Elder #ifdef CONFIG_BLOCK 636ec9123c5SAlex Elder } else if (osd_data->type == CEPH_OSD_DATA_TYPE_BIO) { 63790af3602SAlex Elder ceph_msg_data_add_bio(msg, osd_data->bio, length); 638ec9123c5SAlex Elder #endif 639ec9123c5SAlex Elder } else { 640ec9123c5SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_NONE); 641ec9123c5SAlex Elder } 642ec9123c5SAlex Elder } 643ec9123c5SAlex Elder 644175face2SAlex Elder static u64 osd_req_encode_op(struct ceph_osd_request *req, 64579528734SAlex Elder struct ceph_osd_op *dst, unsigned int which) 6463d14c5d2SYehuda Sadeh { 64779528734SAlex Elder struct ceph_osd_req_op *src; 64804017e29SAlex Elder struct ceph_osd_data *osd_data; 64954d50649SAlex Elder u64 request_data_len = 0; 65004017e29SAlex Elder u64 data_length; 651175face2SAlex Elder 65279528734SAlex Elder BUG_ON(which >= req->r_num_ops); 65379528734SAlex Elder src = &req->r_ops[which]; 654a8dd0a37SAlex Elder if (WARN_ON(!osd_req_opcode_valid(src->op))) { 655a8dd0a37SAlex Elder pr_err("unrecognized osd opcode %d\n", src->op); 656a8dd0a37SAlex Elder 657a8dd0a37SAlex Elder return 0; 658a8dd0a37SAlex Elder } 6593d14c5d2SYehuda Sadeh 660065a68f9SAlex Elder switch (src->op) { 661fbfab539SAlex Elder case CEPH_OSD_OP_STAT: 66249719778SAlex Elder osd_data = &src->raw_data_in; 66349719778SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 664fbfab539SAlex Elder break; 6653d14c5d2SYehuda Sadeh case CEPH_OSD_OP_READ: 6663d14c5d2SYehuda Sadeh case CEPH_OSD_OP_WRITE: 667ad7a60deSLi Wang case CEPH_OSD_OP_ZERO: 668ad7a60deSLi Wang case CEPH_OSD_OP_TRUNCATE: 669175face2SAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 67054d50649SAlex Elder request_data_len = src->extent.length; 671175face2SAlex Elder dst->extent.offset = cpu_to_le64(src->extent.offset); 672175face2SAlex Elder dst->extent.length = cpu_to_le64(src->extent.length); 6733d14c5d2SYehuda Sadeh dst->extent.truncate_size = 6743d14c5d2SYehuda Sadeh cpu_to_le64(src->extent.truncate_size); 6753d14c5d2SYehuda Sadeh dst->extent.truncate_seq = 6763d14c5d2SYehuda Sadeh cpu_to_le32(src->extent.truncate_seq); 67704017e29SAlex Elder osd_data = &src->extent.osd_data; 6785476492fSAlex Elder if (src->op == CEPH_OSD_OP_WRITE) 67904017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 6805476492fSAlex Elder else 68104017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 6823d14c5d2SYehuda Sadeh break; 6833d14c5d2SYehuda Sadeh case CEPH_OSD_OP_CALL: 6843d14c5d2SYehuda Sadeh dst->cls.class_len = src->cls.class_len; 6853d14c5d2SYehuda Sadeh dst->cls.method_len = src->cls.method_len; 68604017e29SAlex Elder osd_data = &src->cls.request_info; 68704017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 68804017e29SAlex Elder BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGELIST); 68904017e29SAlex Elder request_data_len = osd_data->pagelist->length; 69004017e29SAlex Elder 69104017e29SAlex Elder osd_data = &src->cls.request_data; 69204017e29SAlex Elder data_length = ceph_osd_data_length(osd_data); 69304017e29SAlex Elder if (data_length) { 69404017e29SAlex Elder BUG_ON(osd_data->type == CEPH_OSD_DATA_TYPE_NONE); 69504017e29SAlex Elder dst->cls.indata_len = cpu_to_le32(data_length); 69604017e29SAlex Elder ceph_osdc_msg_data_add(req->r_request, osd_data); 69704017e29SAlex Elder src->payload_len += data_length; 69804017e29SAlex Elder request_data_len += data_length; 69904017e29SAlex Elder } 70004017e29SAlex Elder osd_data = &src->cls.response_data; 70104017e29SAlex Elder ceph_osdc_msg_data_add(req->r_reply, osd_data); 7023d14c5d2SYehuda Sadeh break; 7033d14c5d2SYehuda Sadeh case CEPH_OSD_OP_STARTSYNC: 7043d14c5d2SYehuda Sadeh break; 705a40c4f10SYehuda Sadeh case CEPH_OSD_OP_NOTIFY_ACK: 706a40c4f10SYehuda Sadeh case CEPH_OSD_OP_WATCH: 707a40c4f10SYehuda Sadeh dst->watch.cookie = cpu_to_le64(src->watch.cookie); 708a40c4f10SYehuda Sadeh dst->watch.ver = cpu_to_le64(src->watch.ver); 709a40c4f10SYehuda Sadeh dst->watch.flag = src->watch.flag; 710a40c4f10SYehuda Sadeh break; 711c647b8a8SIlya Dryomov case CEPH_OSD_OP_SETALLOCHINT: 712c647b8a8SIlya Dryomov dst->alloc_hint.expected_object_size = 713c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_object_size); 714c647b8a8SIlya Dryomov dst->alloc_hint.expected_write_size = 715c647b8a8SIlya Dryomov cpu_to_le64(src->alloc_hint.expected_write_size); 716c647b8a8SIlya Dryomov break; 717d74b50beSYan, Zheng case CEPH_OSD_OP_SETXATTR: 718d74b50beSYan, Zheng case CEPH_OSD_OP_CMPXATTR: 719d74b50beSYan, Zheng dst->xattr.name_len = cpu_to_le32(src->xattr.name_len); 720d74b50beSYan, Zheng dst->xattr.value_len = cpu_to_le32(src->xattr.value_len); 721d74b50beSYan, Zheng dst->xattr.cmp_op = src->xattr.cmp_op; 722d74b50beSYan, Zheng dst->xattr.cmp_mode = src->xattr.cmp_mode; 723d74b50beSYan, Zheng osd_data = &src->xattr.osd_data; 724d74b50beSYan, Zheng ceph_osdc_msg_data_add(req->r_request, osd_data); 725d74b50beSYan, Zheng request_data_len = osd_data->pagelist->length; 726d74b50beSYan, Zheng break; 727864e9197SYan, Zheng case CEPH_OSD_OP_CREATE: 728864e9197SYan, Zheng case CEPH_OSD_OP_DELETE: 729864e9197SYan, Zheng break; 7303d14c5d2SYehuda Sadeh default: 7314c46459cSAlex Elder pr_err("unsupported osd opcode %s\n", 7328f63ca2dSAlex Elder ceph_osd_op_name(src->op)); 7334c46459cSAlex Elder WARN_ON(1); 734a8dd0a37SAlex Elder 735a8dd0a37SAlex Elder return 0; 7363d14c5d2SYehuda Sadeh } 7377b25bf5fSIlya Dryomov 738a8dd0a37SAlex Elder dst->op = cpu_to_le16(src->op); 7397b25bf5fSIlya Dryomov dst->flags = cpu_to_le32(src->flags); 7403d14c5d2SYehuda Sadeh dst->payload_len = cpu_to_le32(src->payload_len); 741175face2SAlex Elder 74254d50649SAlex Elder return request_data_len; 7433d14c5d2SYehuda Sadeh } 7443d14c5d2SYehuda Sadeh 7453d14c5d2SYehuda Sadeh /* 7463d14c5d2SYehuda Sadeh * build new request AND message, calculate layout, and adjust file 7473d14c5d2SYehuda Sadeh * extent as needed. 7483d14c5d2SYehuda Sadeh * 7493d14c5d2SYehuda Sadeh * if the file was recently truncated, we include information about its 7503d14c5d2SYehuda Sadeh * old and new size so that the object can be updated appropriately. (we 7513d14c5d2SYehuda Sadeh * avoid synchronously deleting truncated objects because it's slow.) 7523d14c5d2SYehuda Sadeh * 7533d14c5d2SYehuda Sadeh * if @do_sync, include a 'startsync' command so that the osd will flush 7543d14c5d2SYehuda Sadeh * data quickly. 7553d14c5d2SYehuda Sadeh */ 7563d14c5d2SYehuda Sadeh struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, 7573d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 7583d14c5d2SYehuda Sadeh struct ceph_vino vino, 759715e4cd4SYan, Zheng u64 off, u64 *plen, 760715e4cd4SYan, Zheng unsigned int which, int num_ops, 7613d14c5d2SYehuda Sadeh int opcode, int flags, 7623d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 7633d14c5d2SYehuda Sadeh u32 truncate_seq, 7643d14c5d2SYehuda Sadeh u64 truncate_size, 765153e5167SAlex Elder bool use_mempool) 7663d14c5d2SYehuda Sadeh { 7673d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 76875d1c941SAlex Elder u64 objnum = 0; 76975d1c941SAlex Elder u64 objoff = 0; 77075d1c941SAlex Elder u64 objlen = 0; 7716816282dSSage Weil int r; 7723d14c5d2SYehuda Sadeh 773ad7a60deSLi Wang BUG_ON(opcode != CEPH_OSD_OP_READ && opcode != CEPH_OSD_OP_WRITE && 774864e9197SYan, Zheng opcode != CEPH_OSD_OP_ZERO && opcode != CEPH_OSD_OP_TRUNCATE && 775864e9197SYan, Zheng opcode != CEPH_OSD_OP_CREATE && opcode != CEPH_OSD_OP_DELETE); 7763d14c5d2SYehuda Sadeh 777acead002SAlex Elder req = ceph_osdc_alloc_request(osdc, snapc, num_ops, use_mempool, 778ae7ca4a3SAlex Elder GFP_NOFS); 7794ad12621SSage Weil if (!req) 7806816282dSSage Weil return ERR_PTR(-ENOMEM); 78179528734SAlex Elder 782d178a9e7SAlex Elder req->r_flags = flags; 7833d14c5d2SYehuda Sadeh 7843d14c5d2SYehuda Sadeh /* calculate max write size */ 785a19dadfbSAlex Elder r = calc_layout(layout, off, plen, &objnum, &objoff, &objlen); 7863ff5f385SAlex Elder if (r < 0) { 7873ff5f385SAlex Elder ceph_osdc_put_request(req); 7886816282dSSage Weil return ERR_PTR(r); 7893ff5f385SAlex Elder } 790a19dadfbSAlex Elder 791864e9197SYan, Zheng if (opcode == CEPH_OSD_OP_CREATE || opcode == CEPH_OSD_OP_DELETE) { 792715e4cd4SYan, Zheng osd_req_op_init(req, which, opcode); 793864e9197SYan, Zheng } else { 794864e9197SYan, Zheng u32 object_size = le32_to_cpu(layout->fl_object_size); 795864e9197SYan, Zheng u32 object_base = off - objoff; 796ccca4e37SYan, Zheng if (!(truncate_seq == 1 && truncate_size == -1ULL)) { 797d18d1e28SAlex Elder if (truncate_size <= object_base) { 798d18d1e28SAlex Elder truncate_size = 0; 799d18d1e28SAlex Elder } else { 800d18d1e28SAlex Elder truncate_size -= object_base; 801d18d1e28SAlex Elder if (truncate_size > object_size) 802d18d1e28SAlex Elder truncate_size = object_size; 803d18d1e28SAlex Elder } 804ccca4e37SYan, Zheng } 805715e4cd4SYan, Zheng osd_req_op_extent_init(req, which, opcode, objoff, objlen, 806b0270324SAlex Elder truncate_size, truncate_seq); 807864e9197SYan, Zheng } 808d18d1e28SAlex Elder 8093c972c95SIlya Dryomov req->r_base_oloc.pool = ceph_file_layout_pg_pool(*layout); 8103d14c5d2SYehuda Sadeh 8113c972c95SIlya Dryomov snprintf(req->r_base_oid.name, sizeof(req->r_base_oid.name), 8124295f221SIlya Dryomov "%llx.%08llx", vino.ino, objnum); 8133c972c95SIlya Dryomov req->r_base_oid.name_len = strlen(req->r_base_oid.name); 814dbe0fc41SAlex Elder 8153d14c5d2SYehuda Sadeh return req; 8163d14c5d2SYehuda Sadeh } 8173d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_new_request); 8183d14c5d2SYehuda Sadeh 8193d14c5d2SYehuda Sadeh /* 8203d14c5d2SYehuda Sadeh * We keep osd requests in an rbtree, sorted by ->r_tid. 8213d14c5d2SYehuda Sadeh */ 8223d14c5d2SYehuda Sadeh static void __insert_request(struct ceph_osd_client *osdc, 8233d14c5d2SYehuda Sadeh struct ceph_osd_request *new) 8243d14c5d2SYehuda Sadeh { 8253d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->requests.rb_node; 8263d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 8273d14c5d2SYehuda Sadeh struct ceph_osd_request *req = NULL; 8283d14c5d2SYehuda Sadeh 8293d14c5d2SYehuda Sadeh while (*p) { 8303d14c5d2SYehuda Sadeh parent = *p; 8313d14c5d2SYehuda Sadeh req = rb_entry(parent, struct ceph_osd_request, r_node); 8323d14c5d2SYehuda Sadeh if (new->r_tid < req->r_tid) 8333d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 8343d14c5d2SYehuda Sadeh else if (new->r_tid > req->r_tid) 8353d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 8363d14c5d2SYehuda Sadeh else 8373d14c5d2SYehuda Sadeh BUG(); 8383d14c5d2SYehuda Sadeh } 8393d14c5d2SYehuda Sadeh 8403d14c5d2SYehuda Sadeh rb_link_node(&new->r_node, parent, p); 8413d14c5d2SYehuda Sadeh rb_insert_color(&new->r_node, &osdc->requests); 8423d14c5d2SYehuda Sadeh } 8433d14c5d2SYehuda Sadeh 8443d14c5d2SYehuda Sadeh static struct ceph_osd_request *__lookup_request(struct ceph_osd_client *osdc, 8453d14c5d2SYehuda Sadeh u64 tid) 8463d14c5d2SYehuda Sadeh { 8473d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 8483d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 8493d14c5d2SYehuda Sadeh 8503d14c5d2SYehuda Sadeh while (n) { 8513d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 8523d14c5d2SYehuda Sadeh if (tid < req->r_tid) 8533d14c5d2SYehuda Sadeh n = n->rb_left; 8543d14c5d2SYehuda Sadeh else if (tid > req->r_tid) 8553d14c5d2SYehuda Sadeh n = n->rb_right; 8563d14c5d2SYehuda Sadeh else 8573d14c5d2SYehuda Sadeh return req; 8583d14c5d2SYehuda Sadeh } 8593d14c5d2SYehuda Sadeh return NULL; 8603d14c5d2SYehuda Sadeh } 8613d14c5d2SYehuda Sadeh 8623d14c5d2SYehuda Sadeh static struct ceph_osd_request * 8633d14c5d2SYehuda Sadeh __lookup_request_ge(struct ceph_osd_client *osdc, 8643d14c5d2SYehuda Sadeh u64 tid) 8653d14c5d2SYehuda Sadeh { 8663d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 8673d14c5d2SYehuda Sadeh struct rb_node *n = osdc->requests.rb_node; 8683d14c5d2SYehuda Sadeh 8693d14c5d2SYehuda Sadeh while (n) { 8703d14c5d2SYehuda Sadeh req = rb_entry(n, struct ceph_osd_request, r_node); 8713d14c5d2SYehuda Sadeh if (tid < req->r_tid) { 8723d14c5d2SYehuda Sadeh if (!n->rb_left) 8733d14c5d2SYehuda Sadeh return req; 8743d14c5d2SYehuda Sadeh n = n->rb_left; 8753d14c5d2SYehuda Sadeh } else if (tid > req->r_tid) { 8763d14c5d2SYehuda Sadeh n = n->rb_right; 8773d14c5d2SYehuda Sadeh } else { 8783d14c5d2SYehuda Sadeh return req; 8793d14c5d2SYehuda Sadeh } 8803d14c5d2SYehuda Sadeh } 8813d14c5d2SYehuda Sadeh return NULL; 8823d14c5d2SYehuda Sadeh } 8833d14c5d2SYehuda Sadeh 8842cc6128aSIlya Dryomov static void __kick_linger_request(struct ceph_osd_request *req) 8852cc6128aSIlya Dryomov { 8862cc6128aSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 8872cc6128aSIlya Dryomov struct ceph_osd *osd = req->r_osd; 8882cc6128aSIlya Dryomov 8892cc6128aSIlya Dryomov /* 8902cc6128aSIlya Dryomov * Linger requests need to be resent with a new tid to avoid 8912cc6128aSIlya Dryomov * the dup op detection logic on the OSDs. Achieve this with 8922cc6128aSIlya Dryomov * a re-register dance instead of open-coding. 8932cc6128aSIlya Dryomov */ 8942cc6128aSIlya Dryomov ceph_osdc_get_request(req); 8952cc6128aSIlya Dryomov if (!list_empty(&req->r_linger_item)) 8962cc6128aSIlya Dryomov __unregister_linger_request(osdc, req); 8972cc6128aSIlya Dryomov else 8982cc6128aSIlya Dryomov __unregister_request(osdc, req); 8992cc6128aSIlya Dryomov __register_request(osdc, req); 9002cc6128aSIlya Dryomov ceph_osdc_put_request(req); 9012cc6128aSIlya Dryomov 9022cc6128aSIlya Dryomov /* 9032cc6128aSIlya Dryomov * Unless request has been registered as both normal and 9042cc6128aSIlya Dryomov * lingering, __unregister{,_linger}_request clears r_osd. 9052cc6128aSIlya Dryomov * However, here we need to preserve r_osd to make sure we 9062cc6128aSIlya Dryomov * requeue on the same OSD. 9072cc6128aSIlya Dryomov */ 9082cc6128aSIlya Dryomov WARN_ON(req->r_osd || !osd); 9092cc6128aSIlya Dryomov req->r_osd = osd; 9102cc6128aSIlya Dryomov 9112cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, req->r_tid); 9122cc6128aSIlya Dryomov __enqueue_request(req); 9132cc6128aSIlya Dryomov } 9142cc6128aSIlya Dryomov 9156f6c7006SSage Weil /* 9166f6c7006SSage Weil * Resubmit requests pending on the given osd. 9176f6c7006SSage Weil */ 9186f6c7006SSage Weil static void __kick_osd_requests(struct ceph_osd_client *osdc, 9196f6c7006SSage Weil struct ceph_osd *osd) 9206f6c7006SSage Weil { 921a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 922e02493c0SAlex Elder LIST_HEAD(resend); 9232cc6128aSIlya Dryomov LIST_HEAD(resend_linger); 9246f6c7006SSage Weil int err; 9256f6c7006SSage Weil 9262cc6128aSIlya Dryomov dout("%s osd%d\n", __func__, osd->o_osd); 9276f6c7006SSage Weil err = __reset_osd(osdc, osd); 928685a7555SAlex Elder if (err) 9296f6c7006SSage Weil return; 9302cc6128aSIlya Dryomov 931e02493c0SAlex Elder /* 932e02493c0SAlex Elder * Build up a list of requests to resend by traversing the 933e02493c0SAlex Elder * osd's list of requests. Requests for a given object are 934e02493c0SAlex Elder * sent in tid order, and that is also the order they're 935e02493c0SAlex Elder * kept on this list. Therefore all requests that are in 936e02493c0SAlex Elder * flight will be found first, followed by all requests that 937e02493c0SAlex Elder * have not yet been sent. And to resend requests while 938e02493c0SAlex Elder * preserving this order we will want to put any sent 939e02493c0SAlex Elder * requests back on the front of the osd client's unsent 940e02493c0SAlex Elder * list. 941e02493c0SAlex Elder * 942e02493c0SAlex Elder * So we build a separate ordered list of already-sent 943e02493c0SAlex Elder * requests for the affected osd and splice it onto the 944e02493c0SAlex Elder * front of the osd client's unsent list. Once we've seen a 945e02493c0SAlex Elder * request that has not yet been sent we're done. Those 946e02493c0SAlex Elder * requests are already sitting right where they belong. 947e02493c0SAlex Elder */ 9486f6c7006SSage Weil list_for_each_entry(req, &osd->o_requests, r_osd_item) { 949e02493c0SAlex Elder if (!req->r_sent) 950e02493c0SAlex Elder break; 9512cc6128aSIlya Dryomov 9522cc6128aSIlya Dryomov if (!req->r_linger) { 9532cc6128aSIlya Dryomov dout("%s requeueing %p tid %llu\n", __func__, req, 9542cc6128aSIlya Dryomov req->r_tid); 955e02493c0SAlex Elder list_move_tail(&req->r_req_lru_item, &resend); 9566f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 9572cc6128aSIlya Dryomov } else { 9582cc6128aSIlya Dryomov list_move_tail(&req->r_req_lru_item, &resend_linger); 9592cc6128aSIlya Dryomov } 9606f6c7006SSage Weil } 961e02493c0SAlex Elder list_splice(&resend, &osdc->req_unsent); 962a40c4f10SYehuda Sadeh 963e02493c0SAlex Elder /* 9642cc6128aSIlya Dryomov * Both registered and not yet registered linger requests are 9652cc6128aSIlya Dryomov * enqueued with a new tid on the same OSD. We add/move them 9662cc6128aSIlya Dryomov * to req_unsent/o_requests at the end to keep things in tid 9672cc6128aSIlya Dryomov * order. 968e02493c0SAlex Elder */ 969a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osd->o_linger_requests, 9701d0326b1SIlya Dryomov r_linger_osd_item) { 9712cc6128aSIlya Dryomov WARN_ON(!list_empty(&req->r_req_lru_item)); 9722cc6128aSIlya Dryomov __kick_linger_request(req); 973a40c4f10SYehuda Sadeh } 9742cc6128aSIlya Dryomov 9752cc6128aSIlya Dryomov list_for_each_entry_safe(req, nreq, &resend_linger, r_req_lru_item) 9762cc6128aSIlya Dryomov __kick_linger_request(req); 9776f6c7006SSage Weil } 9786f6c7006SSage Weil 9793d14c5d2SYehuda Sadeh /* 9803d14c5d2SYehuda Sadeh * If the osd connection drops, we need to resubmit all requests. 9813d14c5d2SYehuda Sadeh */ 9823d14c5d2SYehuda Sadeh static void osd_reset(struct ceph_connection *con) 9833d14c5d2SYehuda Sadeh { 9843d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 9853d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 9863d14c5d2SYehuda Sadeh 9873d14c5d2SYehuda Sadeh if (!osd) 9883d14c5d2SYehuda Sadeh return; 9893d14c5d2SYehuda Sadeh dout("osd_reset osd%d\n", osd->o_osd); 9903d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 9913d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 99283aff95eSSage Weil mutex_lock(&osdc->request_mutex); 99383aff95eSSage Weil __kick_osd_requests(osdc, osd); 994f9d25199SAlex Elder __send_queued(osdc); 99583aff95eSSage Weil mutex_unlock(&osdc->request_mutex); 9963d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 9973d14c5d2SYehuda Sadeh } 9983d14c5d2SYehuda Sadeh 9993d14c5d2SYehuda Sadeh /* 10003d14c5d2SYehuda Sadeh * Track open sessions with osds. 10013d14c5d2SYehuda Sadeh */ 1002e10006f8SAlex Elder static struct ceph_osd *create_osd(struct ceph_osd_client *osdc, int onum) 10033d14c5d2SYehuda Sadeh { 10043d14c5d2SYehuda Sadeh struct ceph_osd *osd; 10053d14c5d2SYehuda Sadeh 10063d14c5d2SYehuda Sadeh osd = kzalloc(sizeof(*osd), GFP_NOFS); 10073d14c5d2SYehuda Sadeh if (!osd) 10083d14c5d2SYehuda Sadeh return NULL; 10093d14c5d2SYehuda Sadeh 10103d14c5d2SYehuda Sadeh atomic_set(&osd->o_ref, 1); 10113d14c5d2SYehuda Sadeh osd->o_osdc = osdc; 1012e10006f8SAlex Elder osd->o_osd = onum; 1013f407731dSAlex Elder RB_CLEAR_NODE(&osd->o_node); 10143d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_requests); 1015a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osd->o_linger_requests); 10163d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_osd_lru); 10173d14c5d2SYehuda Sadeh osd->o_incarnation = 1; 10183d14c5d2SYehuda Sadeh 1019b7a9e5ddSSage Weil ceph_con_init(&osd->o_con, osd, &osd_con_ops, &osdc->client->msgr); 10203d14c5d2SYehuda Sadeh 10213d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osd->o_keepalive_item); 10223d14c5d2SYehuda Sadeh return osd; 10233d14c5d2SYehuda Sadeh } 10243d14c5d2SYehuda Sadeh 10253d14c5d2SYehuda Sadeh static struct ceph_osd *get_osd(struct ceph_osd *osd) 10263d14c5d2SYehuda Sadeh { 10273d14c5d2SYehuda Sadeh if (atomic_inc_not_zero(&osd->o_ref)) { 10283d14c5d2SYehuda Sadeh dout("get_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref)-1, 10293d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref)); 10303d14c5d2SYehuda Sadeh return osd; 10313d14c5d2SYehuda Sadeh } else { 10323d14c5d2SYehuda Sadeh dout("get_osd %p FAIL\n", osd); 10333d14c5d2SYehuda Sadeh return NULL; 10343d14c5d2SYehuda Sadeh } 10353d14c5d2SYehuda Sadeh } 10363d14c5d2SYehuda Sadeh 10373d14c5d2SYehuda Sadeh static void put_osd(struct ceph_osd *osd) 10383d14c5d2SYehuda Sadeh { 10393d14c5d2SYehuda Sadeh dout("put_osd %p %d -> %d\n", osd, atomic_read(&osd->o_ref), 10403d14c5d2SYehuda Sadeh atomic_read(&osd->o_ref) - 1); 1041b28ec2f3SIlya Dryomov if (atomic_dec_and_test(&osd->o_ref)) { 10423d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osd->o_osdc->client->monc.auth; 10433d14c5d2SYehuda Sadeh 1044b28ec2f3SIlya Dryomov if (osd->o_auth.authorizer) 104527859f97SSage Weil ceph_auth_destroy_authorizer(ac, osd->o_auth.authorizer); 10463d14c5d2SYehuda Sadeh kfree(osd); 10473d14c5d2SYehuda Sadeh } 10483d14c5d2SYehuda Sadeh } 10493d14c5d2SYehuda Sadeh 10503d14c5d2SYehuda Sadeh /* 10513d14c5d2SYehuda Sadeh * remove an osd from our map 10523d14c5d2SYehuda Sadeh */ 10533d14c5d2SYehuda Sadeh static void __remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 10543d14c5d2SYehuda Sadeh { 10557eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 1056cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_requests)); 1057cc9f1f51SIlya Dryomov WARN_ON(!list_empty(&osd->o_linger_requests)); 10587c6e6fc5SIlya Dryomov 10593d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 10607eb71e03SIlya Dryomov rb_erase(&osd->o_node, &osdc->osds); 10617eb71e03SIlya Dryomov RB_CLEAR_NODE(&osd->o_node); 10627eb71e03SIlya Dryomov } 10637eb71e03SIlya Dryomov 10647eb71e03SIlya Dryomov static void remove_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 10657eb71e03SIlya Dryomov { 10667eb71e03SIlya Dryomov dout("%s %p osd%d\n", __func__, osd, osd->o_osd); 10677eb71e03SIlya Dryomov 10687eb71e03SIlya Dryomov if (!RB_EMPTY_NODE(&osd->o_node)) { 10693d14c5d2SYehuda Sadeh ceph_con_close(&osd->o_con); 10707eb71e03SIlya Dryomov __remove_osd(osdc, osd); 10713d14c5d2SYehuda Sadeh put_osd(osd); 10723d14c5d2SYehuda Sadeh } 10737eb71e03SIlya Dryomov } 10743d14c5d2SYehuda Sadeh 1075aca420bcSSage Weil static void remove_all_osds(struct ceph_osd_client *osdc) 1076aca420bcSSage Weil { 1077048a9d2dSJiaju Zhang dout("%s %p\n", __func__, osdc); 1078aca420bcSSage Weil mutex_lock(&osdc->request_mutex); 1079aca420bcSSage Weil while (!RB_EMPTY_ROOT(&osdc->osds)) { 1080aca420bcSSage Weil struct ceph_osd *osd = rb_entry(rb_first(&osdc->osds), 1081aca420bcSSage Weil struct ceph_osd, o_node); 10827eb71e03SIlya Dryomov remove_osd(osdc, osd); 1083aca420bcSSage Weil } 1084aca420bcSSage Weil mutex_unlock(&osdc->request_mutex); 1085aca420bcSSage Weil } 1086aca420bcSSage Weil 10873d14c5d2SYehuda Sadeh static void __move_osd_to_lru(struct ceph_osd_client *osdc, 10883d14c5d2SYehuda Sadeh struct ceph_osd *osd) 10893d14c5d2SYehuda Sadeh { 1090bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 10913d14c5d2SYehuda Sadeh BUG_ON(!list_empty(&osd->o_osd_lru)); 1092bbf37ec3SIlya Dryomov 10933d14c5d2SYehuda Sadeh list_add_tail(&osd->o_osd_lru, &osdc->osd_lru); 10943d14c5d2SYehuda Sadeh osd->lru_ttl = jiffies + osdc->client->options->osd_idle_ttl * HZ; 10953d14c5d2SYehuda Sadeh } 10963d14c5d2SYehuda Sadeh 1097bbf37ec3SIlya Dryomov static void maybe_move_osd_to_lru(struct ceph_osd_client *osdc, 1098bbf37ec3SIlya Dryomov struct ceph_osd *osd) 1099bbf37ec3SIlya Dryomov { 1100bbf37ec3SIlya Dryomov dout("%s %p\n", __func__, osd); 1101bbf37ec3SIlya Dryomov 1102bbf37ec3SIlya Dryomov if (list_empty(&osd->o_requests) && 1103bbf37ec3SIlya Dryomov list_empty(&osd->o_linger_requests)) 1104bbf37ec3SIlya Dryomov __move_osd_to_lru(osdc, osd); 1105bbf37ec3SIlya Dryomov } 1106bbf37ec3SIlya Dryomov 11073d14c5d2SYehuda Sadeh static void __remove_osd_from_lru(struct ceph_osd *osd) 11083d14c5d2SYehuda Sadeh { 11093d14c5d2SYehuda Sadeh dout("__remove_osd_from_lru %p\n", osd); 11103d14c5d2SYehuda Sadeh if (!list_empty(&osd->o_osd_lru)) 11113d14c5d2SYehuda Sadeh list_del_init(&osd->o_osd_lru); 11123d14c5d2SYehuda Sadeh } 11133d14c5d2SYehuda Sadeh 1114aca420bcSSage Weil static void remove_old_osds(struct ceph_osd_client *osdc) 11153d14c5d2SYehuda Sadeh { 11163d14c5d2SYehuda Sadeh struct ceph_osd *osd, *nosd; 11173d14c5d2SYehuda Sadeh 11183d14c5d2SYehuda Sadeh dout("__remove_old_osds %p\n", osdc); 11193d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 11203d14c5d2SYehuda Sadeh list_for_each_entry_safe(osd, nosd, &osdc->osd_lru, o_osd_lru) { 1121aca420bcSSage Weil if (time_before(jiffies, osd->lru_ttl)) 11223d14c5d2SYehuda Sadeh break; 11237eb71e03SIlya Dryomov remove_osd(osdc, osd); 11243d14c5d2SYehuda Sadeh } 11253d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 11263d14c5d2SYehuda Sadeh } 11273d14c5d2SYehuda Sadeh 11283d14c5d2SYehuda Sadeh /* 11293d14c5d2SYehuda Sadeh * reset osd connect 11303d14c5d2SYehuda Sadeh */ 11313d14c5d2SYehuda Sadeh static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd) 11323d14c5d2SYehuda Sadeh { 1133c3acb181SAlex Elder struct ceph_entity_addr *peer_addr; 11343d14c5d2SYehuda Sadeh 11353d14c5d2SYehuda Sadeh dout("__reset_osd %p osd%d\n", osd, osd->o_osd); 1136a40c4f10SYehuda Sadeh if (list_empty(&osd->o_requests) && 1137a40c4f10SYehuda Sadeh list_empty(&osd->o_linger_requests)) { 11387eb71e03SIlya Dryomov remove_osd(osdc, osd); 1139c3acb181SAlex Elder return -ENODEV; 1140c3acb181SAlex Elder } 1141c3acb181SAlex Elder 1142c3acb181SAlex Elder peer_addr = &osdc->osdmap->osd_addr[osd->o_osd]; 1143c3acb181SAlex Elder if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) && 11443d14c5d2SYehuda Sadeh !ceph_con_opened(&osd->o_con)) { 1145c3acb181SAlex Elder struct ceph_osd_request *req; 1146c3acb181SAlex Elder 11473d14c5d2SYehuda Sadeh dout("osd addr hasn't changed and connection never opened, " 11480b4af2e8SIlya Dryomov "letting msgr retry\n"); 11493d14c5d2SYehuda Sadeh /* touch each r_stamp for handle_timeout()'s benfit */ 11503d14c5d2SYehuda Sadeh list_for_each_entry(req, &osd->o_requests, r_osd_item) 11513d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 1152c3acb181SAlex Elder 1153c3acb181SAlex Elder return -EAGAIN; 11543d14c5d2SYehuda Sadeh } 1155c3acb181SAlex Elder 1156c3acb181SAlex Elder ceph_con_close(&osd->o_con); 1157c3acb181SAlex Elder ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr); 1158c3acb181SAlex Elder osd->o_incarnation++; 1159c3acb181SAlex Elder 1160c3acb181SAlex Elder return 0; 11613d14c5d2SYehuda Sadeh } 11623d14c5d2SYehuda Sadeh 11633d14c5d2SYehuda Sadeh static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new) 11643d14c5d2SYehuda Sadeh { 11653d14c5d2SYehuda Sadeh struct rb_node **p = &osdc->osds.rb_node; 11663d14c5d2SYehuda Sadeh struct rb_node *parent = NULL; 11673d14c5d2SYehuda Sadeh struct ceph_osd *osd = NULL; 11683d14c5d2SYehuda Sadeh 1169aca420bcSSage Weil dout("__insert_osd %p osd%d\n", new, new->o_osd); 11703d14c5d2SYehuda Sadeh while (*p) { 11713d14c5d2SYehuda Sadeh parent = *p; 11723d14c5d2SYehuda Sadeh osd = rb_entry(parent, struct ceph_osd, o_node); 11733d14c5d2SYehuda Sadeh if (new->o_osd < osd->o_osd) 11743d14c5d2SYehuda Sadeh p = &(*p)->rb_left; 11753d14c5d2SYehuda Sadeh else if (new->o_osd > osd->o_osd) 11763d14c5d2SYehuda Sadeh p = &(*p)->rb_right; 11773d14c5d2SYehuda Sadeh else 11783d14c5d2SYehuda Sadeh BUG(); 11793d14c5d2SYehuda Sadeh } 11803d14c5d2SYehuda Sadeh 11813d14c5d2SYehuda Sadeh rb_link_node(&new->o_node, parent, p); 11823d14c5d2SYehuda Sadeh rb_insert_color(&new->o_node, &osdc->osds); 11833d14c5d2SYehuda Sadeh } 11843d14c5d2SYehuda Sadeh 11853d14c5d2SYehuda Sadeh static struct ceph_osd *__lookup_osd(struct ceph_osd_client *osdc, int o) 11863d14c5d2SYehuda Sadeh { 11873d14c5d2SYehuda Sadeh struct ceph_osd *osd; 11883d14c5d2SYehuda Sadeh struct rb_node *n = osdc->osds.rb_node; 11893d14c5d2SYehuda Sadeh 11903d14c5d2SYehuda Sadeh while (n) { 11913d14c5d2SYehuda Sadeh osd = rb_entry(n, struct ceph_osd, o_node); 11923d14c5d2SYehuda Sadeh if (o < osd->o_osd) 11933d14c5d2SYehuda Sadeh n = n->rb_left; 11943d14c5d2SYehuda Sadeh else if (o > osd->o_osd) 11953d14c5d2SYehuda Sadeh n = n->rb_right; 11963d14c5d2SYehuda Sadeh else 11973d14c5d2SYehuda Sadeh return osd; 11983d14c5d2SYehuda Sadeh } 11993d14c5d2SYehuda Sadeh return NULL; 12003d14c5d2SYehuda Sadeh } 12013d14c5d2SYehuda Sadeh 12023d14c5d2SYehuda Sadeh static void __schedule_osd_timeout(struct ceph_osd_client *osdc) 12033d14c5d2SYehuda Sadeh { 12043d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->timeout_work, 12053d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ); 12063d14c5d2SYehuda Sadeh } 12073d14c5d2SYehuda Sadeh 12083d14c5d2SYehuda Sadeh static void __cancel_osd_timeout(struct ceph_osd_client *osdc) 12093d14c5d2SYehuda Sadeh { 12103d14c5d2SYehuda Sadeh cancel_delayed_work(&osdc->timeout_work); 12113d14c5d2SYehuda Sadeh } 12123d14c5d2SYehuda Sadeh 12133d14c5d2SYehuda Sadeh /* 12143d14c5d2SYehuda Sadeh * Register request, assign tid. If this is the first request, set up 12153d14c5d2SYehuda Sadeh * the timeout event. 12163d14c5d2SYehuda Sadeh */ 1217a40c4f10SYehuda Sadeh static void __register_request(struct ceph_osd_client *osdc, 12183d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 12193d14c5d2SYehuda Sadeh { 12203d14c5d2SYehuda Sadeh req->r_tid = ++osdc->last_tid; 12213d14c5d2SYehuda Sadeh req->r_request->hdr.tid = cpu_to_le64(req->r_tid); 122277f38e0eSSage Weil dout("__register_request %p tid %lld\n", req, req->r_tid); 12233d14c5d2SYehuda Sadeh __insert_request(osdc, req); 12243d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 12253d14c5d2SYehuda Sadeh osdc->num_requests++; 12263d14c5d2SYehuda Sadeh if (osdc->num_requests == 1) { 12273d14c5d2SYehuda Sadeh dout(" first request, scheduling timeout\n"); 12283d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 12293d14c5d2SYehuda Sadeh } 1230a40c4f10SYehuda Sadeh } 1231a40c4f10SYehuda Sadeh 12323d14c5d2SYehuda Sadeh /* 12333d14c5d2SYehuda Sadeh * called under osdc->request_mutex 12343d14c5d2SYehuda Sadeh */ 12353d14c5d2SYehuda Sadeh static void __unregister_request(struct ceph_osd_client *osdc, 12363d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 12373d14c5d2SYehuda Sadeh { 123835f9f8a0SSage Weil if (RB_EMPTY_NODE(&req->r_node)) { 123935f9f8a0SSage Weil dout("__unregister_request %p tid %lld not registered\n", 124035f9f8a0SSage Weil req, req->r_tid); 124135f9f8a0SSage Weil return; 124235f9f8a0SSage Weil } 124335f9f8a0SSage Weil 12443d14c5d2SYehuda Sadeh dout("__unregister_request %p tid %lld\n", req, req->r_tid); 12453d14c5d2SYehuda Sadeh rb_erase(&req->r_node, &osdc->requests); 12466562d661SIlya Dryomov RB_CLEAR_NODE(&req->r_node); 12473d14c5d2SYehuda Sadeh osdc->num_requests--; 12483d14c5d2SYehuda Sadeh 12493d14c5d2SYehuda Sadeh if (req->r_osd) { 12503d14c5d2SYehuda Sadeh /* make sure the original request isn't in flight. */ 12516740a845SAlex Elder ceph_msg_revoke(req->r_request); 12523d14c5d2SYehuda Sadeh 12533d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1254bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 12554f23409eSIlya Dryomov if (list_empty(&req->r_linger_osd_item)) 12563d14c5d2SYehuda Sadeh req->r_osd = NULL; 12573d14c5d2SYehuda Sadeh } 12583d14c5d2SYehuda Sadeh 12597d5f2481SAlex Elder list_del_init(&req->r_req_lru_item); 12603d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 12613d14c5d2SYehuda Sadeh 12623d14c5d2SYehuda Sadeh if (osdc->num_requests == 0) { 12633d14c5d2SYehuda Sadeh dout(" no requests, canceling timeout\n"); 12643d14c5d2SYehuda Sadeh __cancel_osd_timeout(osdc); 12653d14c5d2SYehuda Sadeh } 12663d14c5d2SYehuda Sadeh } 12673d14c5d2SYehuda Sadeh 12683d14c5d2SYehuda Sadeh /* 12693d14c5d2SYehuda Sadeh * Cancel a previously queued request message 12703d14c5d2SYehuda Sadeh */ 12713d14c5d2SYehuda Sadeh static void __cancel_request(struct ceph_osd_request *req) 12723d14c5d2SYehuda Sadeh { 12733d14c5d2SYehuda Sadeh if (req->r_sent && req->r_osd) { 12746740a845SAlex Elder ceph_msg_revoke(req->r_request); 12753d14c5d2SYehuda Sadeh req->r_sent = 0; 12763d14c5d2SYehuda Sadeh } 12773d14c5d2SYehuda Sadeh } 12783d14c5d2SYehuda Sadeh 1279a40c4f10SYehuda Sadeh static void __register_linger_request(struct ceph_osd_client *osdc, 1280a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1281a40c4f10SYehuda Sadeh { 1282af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1283af593064SIlya Dryomov WARN_ON(!req->r_linger); 1284af593064SIlya Dryomov 128596e4dac6SAlex Elder ceph_osdc_get_request(req); 1286a40c4f10SYehuda Sadeh list_add_tail(&req->r_linger_item, &osdc->req_linger); 12876194ea89SSage Weil if (req->r_osd) 12881d0326b1SIlya Dryomov list_add_tail(&req->r_linger_osd_item, 12896194ea89SSage Weil &req->r_osd->o_linger_requests); 1290a40c4f10SYehuda Sadeh } 1291a40c4f10SYehuda Sadeh 1292a40c4f10SYehuda Sadeh static void __unregister_linger_request(struct ceph_osd_client *osdc, 1293a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1294a40c4f10SYehuda Sadeh { 1295af593064SIlya Dryomov WARN_ON(!req->r_linger); 1296af593064SIlya Dryomov 1297af593064SIlya Dryomov if (list_empty(&req->r_linger_item)) { 1298af593064SIlya Dryomov dout("%s %p tid %llu not registered\n", __func__, req, 1299af593064SIlya Dryomov req->r_tid); 1300af593064SIlya Dryomov return; 1301af593064SIlya Dryomov } 1302af593064SIlya Dryomov 1303af593064SIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 1304a40c4f10SYehuda Sadeh list_del_init(&req->r_linger_item); 1305af593064SIlya Dryomov 130661c74035SAlex Elder if (req->r_osd) { 13071d0326b1SIlya Dryomov list_del_init(&req->r_linger_osd_item); 1308bbf37ec3SIlya Dryomov maybe_move_osd_to_lru(osdc, req->r_osd); 1309fbdb9190SSage Weil if (list_empty(&req->r_osd_item)) 1310a40c4f10SYehuda Sadeh req->r_osd = NULL; 1311a40c4f10SYehuda Sadeh } 131296e4dac6SAlex Elder ceph_osdc_put_request(req); 1313a40c4f10SYehuda Sadeh } 1314a40c4f10SYehuda Sadeh 1315a40c4f10SYehuda Sadeh void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc, 1316a40c4f10SYehuda Sadeh struct ceph_osd_request *req) 1317a40c4f10SYehuda Sadeh { 1318a40c4f10SYehuda Sadeh if (!req->r_linger) { 1319a40c4f10SYehuda Sadeh dout("set_request_linger %p\n", req); 1320a40c4f10SYehuda Sadeh req->r_linger = 1; 1321a40c4f10SYehuda Sadeh } 1322a40c4f10SYehuda Sadeh } 1323a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_set_request_linger); 1324a40c4f10SYehuda Sadeh 13253d14c5d2SYehuda Sadeh /* 1326d29adb34SJosh Durgin * Returns whether a request should be blocked from being sent 1327d29adb34SJosh Durgin * based on the current osdmap and osd_client settings. 1328d29adb34SJosh Durgin * 1329d29adb34SJosh Durgin * Caller should hold map_sem for read. 1330d29adb34SJosh Durgin */ 1331d29adb34SJosh Durgin static bool __req_should_be_paused(struct ceph_osd_client *osdc, 1332d29adb34SJosh Durgin struct ceph_osd_request *req) 1333d29adb34SJosh Durgin { 1334d29adb34SJosh Durgin bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD); 1335d29adb34SJosh Durgin bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) || 1336d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 1337d29adb34SJosh Durgin return (req->r_flags & CEPH_OSD_FLAG_READ && pauserd) || 1338d29adb34SJosh Durgin (req->r_flags & CEPH_OSD_FLAG_WRITE && pausewr); 1339d29adb34SJosh Durgin } 1340d29adb34SJosh Durgin 1341d29adb34SJosh Durgin /* 134217a13e40SIlya Dryomov * Calculate mapping of a request to a PG. Takes tiering into account. 134317a13e40SIlya Dryomov */ 134417a13e40SIlya Dryomov static int __calc_request_pg(struct ceph_osdmap *osdmap, 134517a13e40SIlya Dryomov struct ceph_osd_request *req, 134617a13e40SIlya Dryomov struct ceph_pg *pg_out) 134717a13e40SIlya Dryomov { 1348205ee118SIlya Dryomov bool need_check_tiering; 1349205ee118SIlya Dryomov 1350205ee118SIlya Dryomov need_check_tiering = false; 1351205ee118SIlya Dryomov if (req->r_target_oloc.pool == -1) { 1352205ee118SIlya Dryomov req->r_target_oloc = req->r_base_oloc; /* struct */ 1353205ee118SIlya Dryomov need_check_tiering = true; 1354205ee118SIlya Dryomov } 1355205ee118SIlya Dryomov if (req->r_target_oid.name_len == 0) { 1356205ee118SIlya Dryomov ceph_oid_copy(&req->r_target_oid, &req->r_base_oid); 1357205ee118SIlya Dryomov need_check_tiering = true; 1358205ee118SIlya Dryomov } 1359205ee118SIlya Dryomov 1360205ee118SIlya Dryomov if (need_check_tiering && 1361205ee118SIlya Dryomov (req->r_flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) { 136217a13e40SIlya Dryomov struct ceph_pg_pool_info *pi; 136317a13e40SIlya Dryomov 1364205ee118SIlya Dryomov pi = ceph_pg_pool_by_id(osdmap, req->r_target_oloc.pool); 136517a13e40SIlya Dryomov if (pi) { 136617a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_READ) && 136717a13e40SIlya Dryomov pi->read_tier >= 0) 1368205ee118SIlya Dryomov req->r_target_oloc.pool = pi->read_tier; 136917a13e40SIlya Dryomov if ((req->r_flags & CEPH_OSD_FLAG_WRITE) && 137017a13e40SIlya Dryomov pi->write_tier >= 0) 1371205ee118SIlya Dryomov req->r_target_oloc.pool = pi->write_tier; 137217a13e40SIlya Dryomov } 137317a13e40SIlya Dryomov /* !pi is caught in ceph_oloc_oid_to_pg() */ 137417a13e40SIlya Dryomov } 137517a13e40SIlya Dryomov 1376205ee118SIlya Dryomov return ceph_oloc_oid_to_pg(osdmap, &req->r_target_oloc, 1377205ee118SIlya Dryomov &req->r_target_oid, pg_out); 137817a13e40SIlya Dryomov } 137917a13e40SIlya Dryomov 1380f671b581SIlya Dryomov static void __enqueue_request(struct ceph_osd_request *req) 1381f671b581SIlya Dryomov { 1382f671b581SIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 1383f671b581SIlya Dryomov 1384f671b581SIlya Dryomov dout("%s %p tid %llu to osd%d\n", __func__, req, req->r_tid, 1385f671b581SIlya Dryomov req->r_osd ? req->r_osd->o_osd : -1); 1386f671b581SIlya Dryomov 1387f671b581SIlya Dryomov if (req->r_osd) { 1388f671b581SIlya Dryomov __remove_osd_from_lru(req->r_osd); 1389f671b581SIlya Dryomov list_add_tail(&req->r_osd_item, &req->r_osd->o_requests); 1390f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_unsent); 1391f671b581SIlya Dryomov } else { 1392f671b581SIlya Dryomov list_move_tail(&req->r_req_lru_item, &osdc->req_notarget); 1393f671b581SIlya Dryomov } 1394f671b581SIlya Dryomov } 1395f671b581SIlya Dryomov 139617a13e40SIlya Dryomov /* 13973d14c5d2SYehuda Sadeh * Pick an osd (the first 'up' osd in the pg), allocate the osd struct 13983d14c5d2SYehuda Sadeh * (as needed), and set the request r_osd appropriately. If there is 139925985edcSLucas De Marchi * no up osd, set r_osd to NULL. Move the request to the appropriate list 14006f6c7006SSage Weil * (unsent, homeless) or leave on in-flight lru. 14013d14c5d2SYehuda Sadeh * 14023d14c5d2SYehuda Sadeh * Return 0 if unchanged, 1 if changed, or negative on error. 14033d14c5d2SYehuda Sadeh * 14043d14c5d2SYehuda Sadeh * Caller should hold map_sem for read and request_mutex. 14053d14c5d2SYehuda Sadeh */ 14066f6c7006SSage Weil static int __map_request(struct ceph_osd_client *osdc, 140738d6453cSSage Weil struct ceph_osd_request *req, int force_resend) 14083d14c5d2SYehuda Sadeh { 14095b191d99SSage Weil struct ceph_pg pgid; 14103d14c5d2SYehuda Sadeh int acting[CEPH_PG_MAX_SIZE]; 14118008ab10SIlya Dryomov int num, o; 14123d14c5d2SYehuda Sadeh int err; 1413d29adb34SJosh Durgin bool was_paused; 14143d14c5d2SYehuda Sadeh 14156f6c7006SSage Weil dout("map_request %p tid %lld\n", req, req->r_tid); 141617a13e40SIlya Dryomov 141717a13e40SIlya Dryomov err = __calc_request_pg(osdc->osdmap, req, &pgid); 14186f6c7006SSage Weil if (err) { 14196f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 14203d14c5d2SYehuda Sadeh return err; 14216f6c7006SSage Weil } 14223d14c5d2SYehuda Sadeh req->r_pgid = pgid; 14233d14c5d2SYehuda Sadeh 14248008ab10SIlya Dryomov num = ceph_calc_pg_acting(osdc->osdmap, pgid, acting, &o); 14258008ab10SIlya Dryomov if (num < 0) 14268008ab10SIlya Dryomov num = 0; 14273d14c5d2SYehuda Sadeh 1428d29adb34SJosh Durgin was_paused = req->r_paused; 1429d29adb34SJosh Durgin req->r_paused = __req_should_be_paused(osdc, req); 1430d29adb34SJosh Durgin if (was_paused && !req->r_paused) 1431d29adb34SJosh Durgin force_resend = 1; 1432d29adb34SJosh Durgin 143338d6453cSSage Weil if ((!force_resend && 143438d6453cSSage Weil req->r_osd && req->r_osd->o_osd == o && 14353d14c5d2SYehuda Sadeh req->r_sent >= req->r_osd->o_incarnation && 14363d14c5d2SYehuda Sadeh req->r_num_pg_osds == num && 14373d14c5d2SYehuda Sadeh memcmp(req->r_pg_osds, acting, sizeof(acting[0])*num) == 0) || 1438d29adb34SJosh Durgin (req->r_osd == NULL && o == -1) || 1439d29adb34SJosh Durgin req->r_paused) 14403d14c5d2SYehuda Sadeh return 0; /* no change */ 14413d14c5d2SYehuda Sadeh 14425b191d99SSage Weil dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n", 14435b191d99SSage Weil req->r_tid, pgid.pool, pgid.seed, o, 14443d14c5d2SYehuda Sadeh req->r_osd ? req->r_osd->o_osd : -1); 14453d14c5d2SYehuda Sadeh 14463d14c5d2SYehuda Sadeh /* record full pg acting set */ 14473d14c5d2SYehuda Sadeh memcpy(req->r_pg_osds, acting, sizeof(acting[0]) * num); 14483d14c5d2SYehuda Sadeh req->r_num_pg_osds = num; 14493d14c5d2SYehuda Sadeh 14503d14c5d2SYehuda Sadeh if (req->r_osd) { 14513d14c5d2SYehuda Sadeh __cancel_request(req); 14523d14c5d2SYehuda Sadeh list_del_init(&req->r_osd_item); 1453a390de02SIlya Dryomov list_del_init(&req->r_linger_osd_item); 14543d14c5d2SYehuda Sadeh req->r_osd = NULL; 14553d14c5d2SYehuda Sadeh } 14563d14c5d2SYehuda Sadeh 14573d14c5d2SYehuda Sadeh req->r_osd = __lookup_osd(osdc, o); 14583d14c5d2SYehuda Sadeh if (!req->r_osd && o >= 0) { 14593d14c5d2SYehuda Sadeh err = -ENOMEM; 1460e10006f8SAlex Elder req->r_osd = create_osd(osdc, o); 14616f6c7006SSage Weil if (!req->r_osd) { 14626f6c7006SSage Weil list_move(&req->r_req_lru_item, &osdc->req_notarget); 14633d14c5d2SYehuda Sadeh goto out; 14646f6c7006SSage Weil } 14653d14c5d2SYehuda Sadeh 14666f6c7006SSage Weil dout("map_request osd %p is osd%d\n", req->r_osd, o); 14673d14c5d2SYehuda Sadeh __insert_osd(osdc, req->r_osd); 14683d14c5d2SYehuda Sadeh 1469b7a9e5ddSSage Weil ceph_con_open(&req->r_osd->o_con, 1470b7a9e5ddSSage Weil CEPH_ENTITY_TYPE_OSD, o, 1471b7a9e5ddSSage Weil &osdc->osdmap->osd_addr[o]); 14723d14c5d2SYehuda Sadeh } 14733d14c5d2SYehuda Sadeh 1474f671b581SIlya Dryomov __enqueue_request(req); 14753d14c5d2SYehuda Sadeh err = 1; /* osd or pg changed */ 14763d14c5d2SYehuda Sadeh 14773d14c5d2SYehuda Sadeh out: 14783d14c5d2SYehuda Sadeh return err; 14793d14c5d2SYehuda Sadeh } 14803d14c5d2SYehuda Sadeh 14813d14c5d2SYehuda Sadeh /* 14823d14c5d2SYehuda Sadeh * caller should hold map_sem (for read) and request_mutex 14833d14c5d2SYehuda Sadeh */ 148456e925b6SSage Weil static void __send_request(struct ceph_osd_client *osdc, 14853d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 14863d14c5d2SYehuda Sadeh { 14871b83bef2SSage Weil void *p; 14883d14c5d2SYehuda Sadeh 14891b83bef2SSage Weil dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n", 14901b83bef2SSage Weil req, req->r_tid, req->r_osd->o_osd, req->r_flags, 14911b83bef2SSage Weil (unsigned long long)req->r_pgid.pool, req->r_pgid.seed); 14923d14c5d2SYehuda Sadeh 14931b83bef2SSage Weil /* fill in message content that changes each time we send it */ 14941b83bef2SSage Weil put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch); 14951b83bef2SSage Weil put_unaligned_le32(req->r_flags, req->r_request_flags); 1496205ee118SIlya Dryomov put_unaligned_le64(req->r_target_oloc.pool, req->r_request_pool); 14971b83bef2SSage Weil p = req->r_request_pgid; 14981b83bef2SSage Weil ceph_encode_64(&p, req->r_pgid.pool); 14991b83bef2SSage Weil ceph_encode_32(&p, req->r_pgid.seed); 15001b83bef2SSage Weil put_unaligned_le64(1, req->r_request_attempts); /* FIXME */ 15011b83bef2SSage Weil memcpy(req->r_request_reassert_version, &req->r_reassert_version, 15021b83bef2SSage Weil sizeof(req->r_reassert_version)); 15032169aea6SSage Weil 15043d14c5d2SYehuda Sadeh req->r_stamp = jiffies; 15053d14c5d2SYehuda Sadeh list_move_tail(&req->r_req_lru_item, &osdc->req_lru); 15063d14c5d2SYehuda Sadeh 15073d14c5d2SYehuda Sadeh ceph_msg_get(req->r_request); /* send consumes a ref */ 150826be8808SAlex Elder 15093d14c5d2SYehuda Sadeh req->r_sent = req->r_osd->o_incarnation; 151026be8808SAlex Elder 151126be8808SAlex Elder ceph_con_send(&req->r_osd->o_con, req->r_request); 15123d14c5d2SYehuda Sadeh } 15133d14c5d2SYehuda Sadeh 15143d14c5d2SYehuda Sadeh /* 15156f6c7006SSage Weil * Send any requests in the queue (req_unsent). 15166f6c7006SSage Weil */ 1517f9d25199SAlex Elder static void __send_queued(struct ceph_osd_client *osdc) 15186f6c7006SSage Weil { 15196f6c7006SSage Weil struct ceph_osd_request *req, *tmp; 15206f6c7006SSage Weil 1521f9d25199SAlex Elder dout("__send_queued\n"); 1522f9d25199SAlex Elder list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) 15236f6c7006SSage Weil __send_request(osdc, req); 15246f6c7006SSage Weil } 15256f6c7006SSage Weil 15266f6c7006SSage Weil /* 15270bbfdfe8SIlya Dryomov * Caller should hold map_sem for read and request_mutex. 15280bbfdfe8SIlya Dryomov */ 15290bbfdfe8SIlya Dryomov static int __ceph_osdc_start_request(struct ceph_osd_client *osdc, 15300bbfdfe8SIlya Dryomov struct ceph_osd_request *req, 15310bbfdfe8SIlya Dryomov bool nofail) 15320bbfdfe8SIlya Dryomov { 15330bbfdfe8SIlya Dryomov int rc; 15340bbfdfe8SIlya Dryomov 15350bbfdfe8SIlya Dryomov __register_request(osdc, req); 15360bbfdfe8SIlya Dryomov req->r_sent = 0; 15370bbfdfe8SIlya Dryomov req->r_got_reply = 0; 15380bbfdfe8SIlya Dryomov rc = __map_request(osdc, req, 0); 15390bbfdfe8SIlya Dryomov if (rc < 0) { 15400bbfdfe8SIlya Dryomov if (nofail) { 15410bbfdfe8SIlya Dryomov dout("osdc_start_request failed map, " 15420bbfdfe8SIlya Dryomov " will retry %lld\n", req->r_tid); 15430bbfdfe8SIlya Dryomov rc = 0; 15440bbfdfe8SIlya Dryomov } else { 15450bbfdfe8SIlya Dryomov __unregister_request(osdc, req); 15460bbfdfe8SIlya Dryomov } 15470bbfdfe8SIlya Dryomov return rc; 15480bbfdfe8SIlya Dryomov } 15490bbfdfe8SIlya Dryomov 15500bbfdfe8SIlya Dryomov if (req->r_osd == NULL) { 15510bbfdfe8SIlya Dryomov dout("send_request %p no up osds in pg\n", req); 15520bbfdfe8SIlya Dryomov ceph_monc_request_next_osdmap(&osdc->client->monc); 15530bbfdfe8SIlya Dryomov } else { 15540bbfdfe8SIlya Dryomov __send_queued(osdc); 15550bbfdfe8SIlya Dryomov } 15560bbfdfe8SIlya Dryomov 15570bbfdfe8SIlya Dryomov return 0; 15580bbfdfe8SIlya Dryomov } 15590bbfdfe8SIlya Dryomov 15600bbfdfe8SIlya Dryomov /* 15613d14c5d2SYehuda Sadeh * Timeout callback, called every N seconds when 1 or more osd 15623d14c5d2SYehuda Sadeh * requests has been active for more than N seconds. When this 15633d14c5d2SYehuda Sadeh * happens, we ping all OSDs with requests who have timed out to 15643d14c5d2SYehuda Sadeh * ensure any communications channel reset is detected. Reset the 15653d14c5d2SYehuda Sadeh * request timeouts another N seconds in the future as we go. 15663d14c5d2SYehuda Sadeh * Reschedule the timeout event another N seconds in future (unless 15673d14c5d2SYehuda Sadeh * there are no open requests). 15683d14c5d2SYehuda Sadeh */ 15693d14c5d2SYehuda Sadeh static void handle_timeout(struct work_struct *work) 15703d14c5d2SYehuda Sadeh { 15713d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 15723d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, timeout_work.work); 157383aff95eSSage Weil struct ceph_osd_request *req; 15743d14c5d2SYehuda Sadeh struct ceph_osd *osd; 15753d14c5d2SYehuda Sadeh unsigned long keepalive = 15763d14c5d2SYehuda Sadeh osdc->client->options->osd_keepalive_timeout * HZ; 15773d14c5d2SYehuda Sadeh struct list_head slow_osds; 15783d14c5d2SYehuda Sadeh dout("timeout\n"); 15793d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 15803d14c5d2SYehuda Sadeh 15813d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 15823d14c5d2SYehuda Sadeh 15833d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 15843d14c5d2SYehuda Sadeh 15853d14c5d2SYehuda Sadeh /* 15863d14c5d2SYehuda Sadeh * ping osds that are a bit slow. this ensures that if there 15873d14c5d2SYehuda Sadeh * is a break in the TCP connection we will notice, and reopen 15883d14c5d2SYehuda Sadeh * a connection with that osd (from the fault callback). 15893d14c5d2SYehuda Sadeh */ 15903d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&slow_osds); 15913d14c5d2SYehuda Sadeh list_for_each_entry(req, &osdc->req_lru, r_req_lru_item) { 15923d14c5d2SYehuda Sadeh if (time_before(jiffies, req->r_stamp + keepalive)) 15933d14c5d2SYehuda Sadeh break; 15943d14c5d2SYehuda Sadeh 15953d14c5d2SYehuda Sadeh osd = req->r_osd; 15963d14c5d2SYehuda Sadeh BUG_ON(!osd); 15973d14c5d2SYehuda Sadeh dout(" tid %llu is slow, will send keepalive on osd%d\n", 15983d14c5d2SYehuda Sadeh req->r_tid, osd->o_osd); 15993d14c5d2SYehuda Sadeh list_move_tail(&osd->o_keepalive_item, &slow_osds); 16003d14c5d2SYehuda Sadeh } 16013d14c5d2SYehuda Sadeh while (!list_empty(&slow_osds)) { 16023d14c5d2SYehuda Sadeh osd = list_entry(slow_osds.next, struct ceph_osd, 16033d14c5d2SYehuda Sadeh o_keepalive_item); 16043d14c5d2SYehuda Sadeh list_del_init(&osd->o_keepalive_item); 16053d14c5d2SYehuda Sadeh ceph_con_keepalive(&osd->o_con); 16063d14c5d2SYehuda Sadeh } 16073d14c5d2SYehuda Sadeh 16083d14c5d2SYehuda Sadeh __schedule_osd_timeout(osdc); 1609f9d25199SAlex Elder __send_queued(osdc); 16103d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 16113d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16123d14c5d2SYehuda Sadeh } 16133d14c5d2SYehuda Sadeh 16143d14c5d2SYehuda Sadeh static void handle_osds_timeout(struct work_struct *work) 16153d14c5d2SYehuda Sadeh { 16163d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = 16173d14c5d2SYehuda Sadeh container_of(work, struct ceph_osd_client, 16183d14c5d2SYehuda Sadeh osds_timeout_work.work); 16193d14c5d2SYehuda Sadeh unsigned long delay = 16203d14c5d2SYehuda Sadeh osdc->client->options->osd_idle_ttl * HZ >> 2; 16213d14c5d2SYehuda Sadeh 16223d14c5d2SYehuda Sadeh dout("osds timeout\n"); 16233d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 1624aca420bcSSage Weil remove_old_osds(osdc); 16253d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 16263d14c5d2SYehuda Sadeh 16273d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 16283d14c5d2SYehuda Sadeh round_jiffies_relative(delay)); 16293d14c5d2SYehuda Sadeh } 16303d14c5d2SYehuda Sadeh 1631205ee118SIlya Dryomov static int ceph_oloc_decode(void **p, void *end, 1632205ee118SIlya Dryomov struct ceph_object_locator *oloc) 1633205ee118SIlya Dryomov { 1634205ee118SIlya Dryomov u8 struct_v, struct_cv; 1635205ee118SIlya Dryomov u32 len; 1636205ee118SIlya Dryomov void *struct_end; 1637205ee118SIlya Dryomov int ret = 0; 1638205ee118SIlya Dryomov 1639205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1640205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1641205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1642205ee118SIlya Dryomov if (struct_v < 3) { 1643205ee118SIlya Dryomov pr_warn("got v %d < 3 cv %d of ceph_object_locator\n", 1644205ee118SIlya Dryomov struct_v, struct_cv); 1645205ee118SIlya Dryomov goto e_inval; 1646205ee118SIlya Dryomov } 1647205ee118SIlya Dryomov if (struct_cv > 6) { 1648205ee118SIlya Dryomov pr_warn("got v %d cv %d > 6 of ceph_object_locator\n", 1649205ee118SIlya Dryomov struct_v, struct_cv); 1650205ee118SIlya Dryomov goto e_inval; 1651205ee118SIlya Dryomov } 1652205ee118SIlya Dryomov len = ceph_decode_32(p); 1653205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1654205ee118SIlya Dryomov struct_end = *p + len; 1655205ee118SIlya Dryomov 1656205ee118SIlya Dryomov oloc->pool = ceph_decode_64(p); 1657205ee118SIlya Dryomov *p += 4; /* skip preferred */ 1658205ee118SIlya Dryomov 1659205ee118SIlya Dryomov len = ceph_decode_32(p); 1660205ee118SIlya Dryomov if (len > 0) { 1661205ee118SIlya Dryomov pr_warn("ceph_object_locator::key is set\n"); 1662205ee118SIlya Dryomov goto e_inval; 1663205ee118SIlya Dryomov } 1664205ee118SIlya Dryomov 1665205ee118SIlya Dryomov if (struct_v >= 5) { 1666205ee118SIlya Dryomov len = ceph_decode_32(p); 1667205ee118SIlya Dryomov if (len > 0) { 1668205ee118SIlya Dryomov pr_warn("ceph_object_locator::nspace is set\n"); 1669205ee118SIlya Dryomov goto e_inval; 1670205ee118SIlya Dryomov } 1671205ee118SIlya Dryomov } 1672205ee118SIlya Dryomov 1673205ee118SIlya Dryomov if (struct_v >= 6) { 1674205ee118SIlya Dryomov s64 hash = ceph_decode_64(p); 1675205ee118SIlya Dryomov if (hash != -1) { 1676205ee118SIlya Dryomov pr_warn("ceph_object_locator::hash is set\n"); 1677205ee118SIlya Dryomov goto e_inval; 1678205ee118SIlya Dryomov } 1679205ee118SIlya Dryomov } 1680205ee118SIlya Dryomov 1681205ee118SIlya Dryomov /* skip the rest */ 1682205ee118SIlya Dryomov *p = struct_end; 1683205ee118SIlya Dryomov out: 1684205ee118SIlya Dryomov return ret; 1685205ee118SIlya Dryomov 1686205ee118SIlya Dryomov e_inval: 1687205ee118SIlya Dryomov ret = -EINVAL; 1688205ee118SIlya Dryomov goto out; 1689205ee118SIlya Dryomov } 1690205ee118SIlya Dryomov 1691205ee118SIlya Dryomov static int ceph_redirect_decode(void **p, void *end, 1692205ee118SIlya Dryomov struct ceph_request_redirect *redir) 1693205ee118SIlya Dryomov { 1694205ee118SIlya Dryomov u8 struct_v, struct_cv; 1695205ee118SIlya Dryomov u32 len; 1696205ee118SIlya Dryomov void *struct_end; 1697205ee118SIlya Dryomov int ret; 1698205ee118SIlya Dryomov 1699205ee118SIlya Dryomov ceph_decode_need(p, end, 1 + 1 + 4, e_inval); 1700205ee118SIlya Dryomov struct_v = ceph_decode_8(p); 1701205ee118SIlya Dryomov struct_cv = ceph_decode_8(p); 1702205ee118SIlya Dryomov if (struct_cv > 1) { 1703205ee118SIlya Dryomov pr_warn("got v %d cv %d > 1 of ceph_request_redirect\n", 1704205ee118SIlya Dryomov struct_v, struct_cv); 1705205ee118SIlya Dryomov goto e_inval; 1706205ee118SIlya Dryomov } 1707205ee118SIlya Dryomov len = ceph_decode_32(p); 1708205ee118SIlya Dryomov ceph_decode_need(p, end, len, e_inval); 1709205ee118SIlya Dryomov struct_end = *p + len; 1710205ee118SIlya Dryomov 1711205ee118SIlya Dryomov ret = ceph_oloc_decode(p, end, &redir->oloc); 1712205ee118SIlya Dryomov if (ret) 1713205ee118SIlya Dryomov goto out; 1714205ee118SIlya Dryomov 1715205ee118SIlya Dryomov len = ceph_decode_32(p); 1716205ee118SIlya Dryomov if (len > 0) { 1717205ee118SIlya Dryomov pr_warn("ceph_request_redirect::object_name is set\n"); 1718205ee118SIlya Dryomov goto e_inval; 1719205ee118SIlya Dryomov } 1720205ee118SIlya Dryomov 1721205ee118SIlya Dryomov len = ceph_decode_32(p); 1722205ee118SIlya Dryomov *p += len; /* skip osd_instructions */ 1723205ee118SIlya Dryomov 1724205ee118SIlya Dryomov /* skip the rest */ 1725205ee118SIlya Dryomov *p = struct_end; 1726205ee118SIlya Dryomov out: 1727205ee118SIlya Dryomov return ret; 1728205ee118SIlya Dryomov 1729205ee118SIlya Dryomov e_inval: 1730205ee118SIlya Dryomov ret = -EINVAL; 1731205ee118SIlya Dryomov goto out; 1732205ee118SIlya Dryomov } 1733205ee118SIlya Dryomov 173425845472SSage Weil static void complete_request(struct ceph_osd_request *req) 173525845472SSage Weil { 173625845472SSage Weil complete_all(&req->r_safe_completion); /* fsync waiter */ 173725845472SSage Weil } 173825845472SSage Weil 17393d14c5d2SYehuda Sadeh /* 17403d14c5d2SYehuda Sadeh * handle osd op reply. either call the callback if it is specified, 17413d14c5d2SYehuda Sadeh * or do the completion to wake up the waiting thread. 17423d14c5d2SYehuda Sadeh */ 17433d14c5d2SYehuda Sadeh static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 17443d14c5d2SYehuda Sadeh struct ceph_connection *con) 17453d14c5d2SYehuda Sadeh { 17461b83bef2SSage Weil void *p, *end; 17473d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 1748205ee118SIlya Dryomov struct ceph_request_redirect redir; 17493d14c5d2SYehuda Sadeh u64 tid; 17501b83bef2SSage Weil int object_len; 175179528734SAlex Elder unsigned int numops; 175279528734SAlex Elder int payload_len, flags; 17533d14c5d2SYehuda Sadeh s32 result; 17541b83bef2SSage Weil s32 retry_attempt; 17551b83bef2SSage Weil struct ceph_pg pg; 17561b83bef2SSage Weil int err; 17571b83bef2SSage Weil u32 reassert_epoch; 17581b83bef2SSage Weil u64 reassert_version; 17591b83bef2SSage Weil u32 osdmap_epoch; 17600d5af164SAlex Elder int already_completed; 17619fc6e064SAlex Elder u32 bytes; 176279528734SAlex Elder unsigned int i; 17633d14c5d2SYehuda Sadeh 17643d14c5d2SYehuda Sadeh tid = le64_to_cpu(msg->hdr.tid); 17651b83bef2SSage Weil dout("handle_reply %p tid %llu\n", msg, tid); 17661b83bef2SSage Weil 17671b83bef2SSage Weil p = msg->front.iov_base; 17681b83bef2SSage Weil end = p + msg->front.iov_len; 17691b83bef2SSage Weil 17701b83bef2SSage Weil ceph_decode_need(&p, end, 4, bad); 17711b83bef2SSage Weil object_len = ceph_decode_32(&p); 17721b83bef2SSage Weil ceph_decode_need(&p, end, object_len, bad); 17731b83bef2SSage Weil p += object_len; 17741b83bef2SSage Weil 1775ef4859d6SAlex Elder err = ceph_decode_pgid(&p, end, &pg); 17761b83bef2SSage Weil if (err) 17773d14c5d2SYehuda Sadeh goto bad; 17781b83bef2SSage Weil 17791b83bef2SSage Weil ceph_decode_need(&p, end, 8 + 4 + 4 + 8 + 4, bad); 17801b83bef2SSage Weil flags = ceph_decode_64(&p); 17811b83bef2SSage Weil result = ceph_decode_32(&p); 17821b83bef2SSage Weil reassert_epoch = ceph_decode_32(&p); 17831b83bef2SSage Weil reassert_version = ceph_decode_64(&p); 17841b83bef2SSage Weil osdmap_epoch = ceph_decode_32(&p); 17851b83bef2SSage Weil 17863d14c5d2SYehuda Sadeh /* lookup */ 1787ff513aceSIlya Dryomov down_read(&osdc->map_sem); 17883d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 17893d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 17903d14c5d2SYehuda Sadeh if (req == NULL) { 17913d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dne\n", tid); 17928058fd45SAlex Elder goto bad_mutex; 17933d14c5d2SYehuda Sadeh } 17943d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 17951b83bef2SSage Weil 17961b83bef2SSage Weil dout("handle_reply %p tid %llu req %p result %d\n", msg, tid, 17971b83bef2SSage Weil req, result); 17981b83bef2SSage Weil 179918741196SDan Carpenter ceph_decode_need(&p, end, 4, bad_put); 18001b83bef2SSage Weil numops = ceph_decode_32(&p); 18011b83bef2SSage Weil if (numops > CEPH_OSD_MAX_OP) 18021b83bef2SSage Weil goto bad_put; 18031b83bef2SSage Weil if (numops != req->r_num_ops) 18041b83bef2SSage Weil goto bad_put; 18051b83bef2SSage Weil payload_len = 0; 180618741196SDan Carpenter ceph_decode_need(&p, end, numops * sizeof(struct ceph_osd_op), bad_put); 18071b83bef2SSage Weil for (i = 0; i < numops; i++) { 18081b83bef2SSage Weil struct ceph_osd_op *op = p; 18091b83bef2SSage Weil int len; 18101b83bef2SSage Weil 18111b83bef2SSage Weil len = le32_to_cpu(op->payload_len); 18121b83bef2SSage Weil req->r_reply_op_len[i] = len; 18131b83bef2SSage Weil dout(" op %d has %d bytes\n", i, len); 18141b83bef2SSage Weil payload_len += len; 18151b83bef2SSage Weil p += sizeof(*op); 18161b83bef2SSage Weil } 18179fc6e064SAlex Elder bytes = le32_to_cpu(msg->hdr.data_len); 18189fc6e064SAlex Elder if (payload_len != bytes) { 1819b9a67899SJoe Perches pr_warn("sum of op payload lens %d != data_len %d\n", 18209fc6e064SAlex Elder payload_len, bytes); 18211b83bef2SSage Weil goto bad_put; 18221b83bef2SSage Weil } 18231b83bef2SSage Weil 182418741196SDan Carpenter ceph_decode_need(&p, end, 4 + numops * 4, bad_put); 18251b83bef2SSage Weil retry_attempt = ceph_decode_32(&p); 18261b83bef2SSage Weil for (i = 0; i < numops; i++) 18271b83bef2SSage Weil req->r_reply_op_result[i] = ceph_decode_32(&p); 18283d14c5d2SYehuda Sadeh 1829205ee118SIlya Dryomov if (le16_to_cpu(msg->hdr.version) >= 6) { 1830205ee118SIlya Dryomov p += 8 + 4; /* skip replay_version */ 1831205ee118SIlya Dryomov p += 8; /* skip user_version */ 1832205ee118SIlya Dryomov 1833205ee118SIlya Dryomov err = ceph_redirect_decode(&p, end, &redir); 1834205ee118SIlya Dryomov if (err) 1835205ee118SIlya Dryomov goto bad_put; 1836205ee118SIlya Dryomov } else { 1837205ee118SIlya Dryomov redir.oloc.pool = -1; 1838205ee118SIlya Dryomov } 1839205ee118SIlya Dryomov 1840205ee118SIlya Dryomov if (redir.oloc.pool != -1) { 1841205ee118SIlya Dryomov dout("redirect pool %lld\n", redir.oloc.pool); 1842205ee118SIlya Dryomov 1843205ee118SIlya Dryomov __unregister_request(osdc, req); 1844205ee118SIlya Dryomov 1845205ee118SIlya Dryomov req->r_target_oloc = redir.oloc; /* struct */ 1846205ee118SIlya Dryomov 1847205ee118SIlya Dryomov /* 1848205ee118SIlya Dryomov * Start redirect requests with nofail=true. If 1849205ee118SIlya Dryomov * mapping fails, request will end up on the notarget 1850205ee118SIlya Dryomov * list, waiting for the new osdmap (which can take 1851205ee118SIlya Dryomov * a while), even though the original request mapped 1852205ee118SIlya Dryomov * successfully. In the future we might want to follow 1853205ee118SIlya Dryomov * original request's nofail setting here. 1854205ee118SIlya Dryomov */ 1855ff513aceSIlya Dryomov err = __ceph_osdc_start_request(osdc, req, true); 1856205ee118SIlya Dryomov BUG_ON(err); 1857205ee118SIlya Dryomov 1858ff513aceSIlya Dryomov goto out_unlock; 1859205ee118SIlya Dryomov } 1860205ee118SIlya Dryomov 1861eb845ff1SYan, Zheng already_completed = req->r_got_reply; 18623d14c5d2SYehuda Sadeh if (!req->r_got_reply) { 18631b83bef2SSage Weil req->r_result = result; 18643d14c5d2SYehuda Sadeh dout("handle_reply result %d bytes %d\n", req->r_result, 18653d14c5d2SYehuda Sadeh bytes); 18663d14c5d2SYehuda Sadeh if (req->r_result == 0) 18673d14c5d2SYehuda Sadeh req->r_result = bytes; 18683d14c5d2SYehuda Sadeh 18693d14c5d2SYehuda Sadeh /* in case this is a write and we need to replay, */ 18701b83bef2SSage Weil req->r_reassert_version.epoch = cpu_to_le32(reassert_epoch); 18711b83bef2SSage Weil req->r_reassert_version.version = cpu_to_le64(reassert_version); 18723d14c5d2SYehuda Sadeh 18733d14c5d2SYehuda Sadeh req->r_got_reply = 1; 18743d14c5d2SYehuda Sadeh } else if ((flags & CEPH_OSD_FLAG_ONDISK) == 0) { 18753d14c5d2SYehuda Sadeh dout("handle_reply tid %llu dup ack\n", tid); 1876ff513aceSIlya Dryomov goto out_unlock; 18773d14c5d2SYehuda Sadeh } 18783d14c5d2SYehuda Sadeh 18793d14c5d2SYehuda Sadeh dout("handle_reply tid %llu flags %d\n", tid, flags); 18803d14c5d2SYehuda Sadeh 1881a40c4f10SYehuda Sadeh if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK)) 1882a40c4f10SYehuda Sadeh __register_linger_request(osdc, req); 1883a40c4f10SYehuda Sadeh 18843d14c5d2SYehuda Sadeh /* either this is a read, or we got the safe response */ 18853d14c5d2SYehuda Sadeh if (result < 0 || 18863d14c5d2SYehuda Sadeh (flags & CEPH_OSD_FLAG_ONDISK) || 18873d14c5d2SYehuda Sadeh ((flags & CEPH_OSD_FLAG_WRITE) == 0)) 18883d14c5d2SYehuda Sadeh __unregister_request(osdc, req); 18893d14c5d2SYehuda Sadeh 18903d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 1891ff513aceSIlya Dryomov up_read(&osdc->map_sem); 18923d14c5d2SYehuda Sadeh 1893eb845ff1SYan, Zheng if (!already_completed) { 189461c5d6bfSYan, Zheng if (req->r_unsafe_callback && 189561c5d6bfSYan, Zheng result >= 0 && !(flags & CEPH_OSD_FLAG_ONDISK)) 189661c5d6bfSYan, Zheng req->r_unsafe_callback(req, true); 18973d14c5d2SYehuda Sadeh if (req->r_callback) 18983d14c5d2SYehuda Sadeh req->r_callback(req, msg); 18993d14c5d2SYehuda Sadeh else 19003d14c5d2SYehuda Sadeh complete_all(&req->r_completion); 1901eb845ff1SYan, Zheng } 19023d14c5d2SYehuda Sadeh 190361c5d6bfSYan, Zheng if (flags & CEPH_OSD_FLAG_ONDISK) { 190461c5d6bfSYan, Zheng if (req->r_unsafe_callback && already_completed) 190561c5d6bfSYan, Zheng req->r_unsafe_callback(req, false); 190625845472SSage Weil complete_request(req); 190761c5d6bfSYan, Zheng } 19083d14c5d2SYehuda Sadeh 1909ff513aceSIlya Dryomov out: 1910a40c4f10SYehuda Sadeh dout("req=%p req->r_linger=%d\n", req, req->r_linger); 19113d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 19123d14c5d2SYehuda Sadeh return; 1913ff513aceSIlya Dryomov out_unlock: 1914ff513aceSIlya Dryomov mutex_unlock(&osdc->request_mutex); 1915ff513aceSIlya Dryomov up_read(&osdc->map_sem); 1916ff513aceSIlya Dryomov goto out; 19173d14c5d2SYehuda Sadeh 19181b83bef2SSage Weil bad_put: 191937c89bdeSLi Wang req->r_result = -EIO; 192037c89bdeSLi Wang __unregister_request(osdc, req); 192137c89bdeSLi Wang if (req->r_callback) 192237c89bdeSLi Wang req->r_callback(req, msg); 192337c89bdeSLi Wang else 192437c89bdeSLi Wang complete_all(&req->r_completion); 192537c89bdeSLi Wang complete_request(req); 19261b83bef2SSage Weil ceph_osdc_put_request(req); 19278058fd45SAlex Elder bad_mutex: 19288058fd45SAlex Elder mutex_unlock(&osdc->request_mutex); 1929ff513aceSIlya Dryomov up_read(&osdc->map_sem); 19303d14c5d2SYehuda Sadeh bad: 19311b83bef2SSage Weil pr_err("corrupt osd_op_reply got %d %d\n", 19321b83bef2SSage Weil (int)msg->front.iov_len, le32_to_cpu(msg->hdr.front_len)); 19333d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 19343d14c5d2SYehuda Sadeh } 19353d14c5d2SYehuda Sadeh 19366f6c7006SSage Weil static void reset_changed_osds(struct ceph_osd_client *osdc) 19373d14c5d2SYehuda Sadeh { 19383d14c5d2SYehuda Sadeh struct rb_node *p, *n; 19393d14c5d2SYehuda Sadeh 19407eb71e03SIlya Dryomov dout("%s %p\n", __func__, osdc); 19413d14c5d2SYehuda Sadeh for (p = rb_first(&osdc->osds); p; p = n) { 19426f6c7006SSage Weil struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node); 19433d14c5d2SYehuda Sadeh 19443d14c5d2SYehuda Sadeh n = rb_next(p); 19453d14c5d2SYehuda Sadeh if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) || 19463d14c5d2SYehuda Sadeh memcmp(&osd->o_con.peer_addr, 19473d14c5d2SYehuda Sadeh ceph_osd_addr(osdc->osdmap, 19483d14c5d2SYehuda Sadeh osd->o_osd), 19493d14c5d2SYehuda Sadeh sizeof(struct ceph_entity_addr)) != 0) 19503d14c5d2SYehuda Sadeh __reset_osd(osdc, osd); 19513d14c5d2SYehuda Sadeh } 19523d14c5d2SYehuda Sadeh } 19533d14c5d2SYehuda Sadeh 19543d14c5d2SYehuda Sadeh /* 19556f6c7006SSage Weil * Requeue requests whose mapping to an OSD has changed. If requests map to 19566f6c7006SSage Weil * no osd, request a new map. 19573d14c5d2SYehuda Sadeh * 1958e6d50f67SAlex Elder * Caller should hold map_sem for read. 19593d14c5d2SYehuda Sadeh */ 19609a1ea2dbSJosh Durgin static void kick_requests(struct ceph_osd_client *osdc, bool force_resend, 19619a1ea2dbSJosh Durgin bool force_resend_writes) 19623d14c5d2SYehuda Sadeh { 1963a40c4f10SYehuda Sadeh struct ceph_osd_request *req, *nreq; 19646f6c7006SSage Weil struct rb_node *p; 19656f6c7006SSage Weil int needmap = 0; 19666f6c7006SSage Weil int err; 19679a1ea2dbSJosh Durgin bool force_resend_req; 19683d14c5d2SYehuda Sadeh 19699a1ea2dbSJosh Durgin dout("kick_requests %s %s\n", force_resend ? " (force resend)" : "", 19709a1ea2dbSJosh Durgin force_resend_writes ? " (force resend writes)" : ""); 19713d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 19726194ea89SSage Weil for (p = rb_first(&osdc->requests); p; ) { 19736f6c7006SSage Weil req = rb_entry(p, struct ceph_osd_request, r_node); 19746194ea89SSage Weil p = rb_next(p); 1975ab60b16dSAlex Elder 1976ab60b16dSAlex Elder /* 1977ab60b16dSAlex Elder * For linger requests that have not yet been 1978ab60b16dSAlex Elder * registered, move them to the linger list; they'll 1979ab60b16dSAlex Elder * be sent to the osd in the loop below. Unregister 1980ab60b16dSAlex Elder * the request before re-registering it as a linger 1981ab60b16dSAlex Elder * request to ensure the __map_request() below 1982ab60b16dSAlex Elder * will decide it needs to be sent. 1983ab60b16dSAlex Elder */ 1984ab60b16dSAlex Elder if (req->r_linger && list_empty(&req->r_linger_item)) { 1985ab60b16dSAlex Elder dout("%p tid %llu restart on osd%d\n", 1986ab60b16dSAlex Elder req, req->r_tid, 1987ab60b16dSAlex Elder req->r_osd ? req->r_osd->o_osd : -1); 198896e4dac6SAlex Elder ceph_osdc_get_request(req); 1989ab60b16dSAlex Elder __unregister_request(osdc, req); 1990ab60b16dSAlex Elder __register_linger_request(osdc, req); 199196e4dac6SAlex Elder ceph_osdc_put_request(req); 1992ab60b16dSAlex Elder continue; 1993ab60b16dSAlex Elder } 1994ab60b16dSAlex Elder 19959a1ea2dbSJosh Durgin force_resend_req = force_resend || 19969a1ea2dbSJosh Durgin (force_resend_writes && 19979a1ea2dbSJosh Durgin req->r_flags & CEPH_OSD_FLAG_WRITE); 19989a1ea2dbSJosh Durgin err = __map_request(osdc, req, force_resend_req); 19996f6c7006SSage Weil if (err < 0) 20006f6c7006SSage Weil continue; /* error */ 20016f6c7006SSage Weil if (req->r_osd == NULL) { 20026f6c7006SSage Weil dout("%p tid %llu maps to no osd\n", req, req->r_tid); 20036f6c7006SSage Weil needmap++; /* request a newer map */ 20046f6c7006SSage Weil } else if (err > 0) { 20056194ea89SSage Weil if (!req->r_linger) { 20066194ea89SSage Weil dout("%p tid %llu requeued on osd%d\n", req, 20076194ea89SSage Weil req->r_tid, 20086f6c7006SSage Weil req->r_osd ? req->r_osd->o_osd : -1); 20096f6c7006SSage Weil req->r_flags |= CEPH_OSD_FLAG_RETRY; 20106f6c7006SSage Weil } 20116f6c7006SSage Weil } 20126194ea89SSage Weil } 2013a40c4f10SYehuda Sadeh 2014a40c4f10SYehuda Sadeh list_for_each_entry_safe(req, nreq, &osdc->req_linger, 2015a40c4f10SYehuda Sadeh r_linger_item) { 2016a40c4f10SYehuda Sadeh dout("linger req=%p req->r_osd=%p\n", req, req->r_osd); 2017a40c4f10SYehuda Sadeh 20189a1ea2dbSJosh Durgin err = __map_request(osdc, req, 20199a1ea2dbSJosh Durgin force_resend || force_resend_writes); 2020ab60b16dSAlex Elder dout("__map_request returned %d\n", err); 2021a40c4f10SYehuda Sadeh if (err < 0) 2022a40c4f10SYehuda Sadeh continue; /* hrm! */ 2023b0494532SIlya Dryomov if (req->r_osd == NULL || err > 0) { 2024a40c4f10SYehuda Sadeh if (req->r_osd == NULL) { 2025b0494532SIlya Dryomov dout("lingering %p tid %llu maps to no osd\n", 2026b0494532SIlya Dryomov req, req->r_tid); 2027b0494532SIlya Dryomov /* 2028b0494532SIlya Dryomov * A homeless lingering request makes 2029b0494532SIlya Dryomov * no sense, as it's job is to keep 2030b0494532SIlya Dryomov * a particular OSD connection open. 2031b0494532SIlya Dryomov * Request a newer map and kick the 2032b0494532SIlya Dryomov * request, knowing that it won't be 2033b0494532SIlya Dryomov * resent until we actually get a map 2034b0494532SIlya Dryomov * that can tell us where to send it. 2035b0494532SIlya Dryomov */ 2036b0494532SIlya Dryomov needmap++; 2037a40c4f10SYehuda Sadeh } 2038a40c4f10SYehuda Sadeh 2039b0494532SIlya Dryomov dout("kicking lingering %p tid %llu osd%d\n", req, 2040b0494532SIlya Dryomov req->r_tid, req->r_osd ? req->r_osd->o_osd : -1); 2041a40c4f10SYehuda Sadeh __register_request(osdc, req); 2042c89ce05eSAlex Elder __unregister_linger_request(osdc, req); 2043a40c4f10SYehuda Sadeh } 2044b0494532SIlya Dryomov } 204514d2f38dSAlex Elder reset_changed_osds(osdc); 20463d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 20473d14c5d2SYehuda Sadeh 20483d14c5d2SYehuda Sadeh if (needmap) { 20493d14c5d2SYehuda Sadeh dout("%d requests for down osds, need new map\n", needmap); 20503d14c5d2SYehuda Sadeh ceph_monc_request_next_osdmap(&osdc->client->monc); 20513d14c5d2SYehuda Sadeh } 20523d14c5d2SYehuda Sadeh } 20536f6c7006SSage Weil 20546f6c7006SSage Weil 20553d14c5d2SYehuda Sadeh /* 20563d14c5d2SYehuda Sadeh * Process updated osd map. 20573d14c5d2SYehuda Sadeh * 20583d14c5d2SYehuda Sadeh * The message contains any number of incremental and full maps, normally 20593d14c5d2SYehuda Sadeh * indicating some sort of topology change in the cluster. Kick requests 20603d14c5d2SYehuda Sadeh * off to different OSDs as needed. 20613d14c5d2SYehuda Sadeh */ 20623d14c5d2SYehuda Sadeh void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg) 20633d14c5d2SYehuda Sadeh { 20643d14c5d2SYehuda Sadeh void *p, *end, *next; 20653d14c5d2SYehuda Sadeh u32 nr_maps, maplen; 20663d14c5d2SYehuda Sadeh u32 epoch; 20673d14c5d2SYehuda Sadeh struct ceph_osdmap *newmap = NULL, *oldmap; 20683d14c5d2SYehuda Sadeh int err; 20693d14c5d2SYehuda Sadeh struct ceph_fsid fsid; 20709a1ea2dbSJosh Durgin bool was_full; 20713d14c5d2SYehuda Sadeh 20723d14c5d2SYehuda Sadeh dout("handle_map have %u\n", osdc->osdmap ? osdc->osdmap->epoch : 0); 20733d14c5d2SYehuda Sadeh p = msg->front.iov_base; 20743d14c5d2SYehuda Sadeh end = p + msg->front.iov_len; 20753d14c5d2SYehuda Sadeh 20763d14c5d2SYehuda Sadeh /* verify fsid */ 20773d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, sizeof(fsid), bad); 20783d14c5d2SYehuda Sadeh ceph_decode_copy(&p, &fsid, sizeof(fsid)); 20793d14c5d2SYehuda Sadeh if (ceph_check_fsid(osdc->client, &fsid) < 0) 20803d14c5d2SYehuda Sadeh return; 20813d14c5d2SYehuda Sadeh 20823d14c5d2SYehuda Sadeh down_write(&osdc->map_sem); 20833d14c5d2SYehuda Sadeh 20849a1ea2dbSJosh Durgin was_full = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL); 20859a1ea2dbSJosh Durgin 20863d14c5d2SYehuda Sadeh /* incremental maps */ 20873d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 20883d14c5d2SYehuda Sadeh dout(" %d inc maps\n", nr_maps); 20893d14c5d2SYehuda Sadeh while (nr_maps > 0) { 20903d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 20913d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 20923d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 20933d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 20943d14c5d2SYehuda Sadeh next = p + maplen; 20953d14c5d2SYehuda Sadeh if (osdc->osdmap && osdc->osdmap->epoch+1 == epoch) { 20963d14c5d2SYehuda Sadeh dout("applying incremental map %u len %d\n", 20973d14c5d2SYehuda Sadeh epoch, maplen); 20983d14c5d2SYehuda Sadeh newmap = osdmap_apply_incremental(&p, next, 20993d14c5d2SYehuda Sadeh osdc->osdmap, 210015d9882cSAlex Elder &osdc->client->msgr); 21013d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 21023d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 21033d14c5d2SYehuda Sadeh goto bad; 21043d14c5d2SYehuda Sadeh } 21053d14c5d2SYehuda Sadeh BUG_ON(!newmap); 21063d14c5d2SYehuda Sadeh if (newmap != osdc->osdmap) { 21073d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 21083d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 21093d14c5d2SYehuda Sadeh } 21109a1ea2dbSJosh Durgin was_full = was_full || 21119a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 21129a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 21139a1ea2dbSJosh Durgin kick_requests(osdc, 0, was_full); 21143d14c5d2SYehuda Sadeh } else { 21153d14c5d2SYehuda Sadeh dout("ignoring incremental map %u len %d\n", 21163d14c5d2SYehuda Sadeh epoch, maplen); 21173d14c5d2SYehuda Sadeh } 21183d14c5d2SYehuda Sadeh p = next; 21193d14c5d2SYehuda Sadeh nr_maps--; 21203d14c5d2SYehuda Sadeh } 21213d14c5d2SYehuda Sadeh if (newmap) 21223d14c5d2SYehuda Sadeh goto done; 21233d14c5d2SYehuda Sadeh 21243d14c5d2SYehuda Sadeh /* full maps */ 21253d14c5d2SYehuda Sadeh ceph_decode_32_safe(&p, end, nr_maps, bad); 21263d14c5d2SYehuda Sadeh dout(" %d full maps\n", nr_maps); 21273d14c5d2SYehuda Sadeh while (nr_maps) { 21283d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, 2*sizeof(u32), bad); 21293d14c5d2SYehuda Sadeh epoch = ceph_decode_32(&p); 21303d14c5d2SYehuda Sadeh maplen = ceph_decode_32(&p); 21313d14c5d2SYehuda Sadeh ceph_decode_need(&p, end, maplen, bad); 21323d14c5d2SYehuda Sadeh if (nr_maps > 1) { 21333d14c5d2SYehuda Sadeh dout("skipping non-latest full map %u len %d\n", 21343d14c5d2SYehuda Sadeh epoch, maplen); 21353d14c5d2SYehuda Sadeh } else if (osdc->osdmap && osdc->osdmap->epoch >= epoch) { 21363d14c5d2SYehuda Sadeh dout("skipping full map %u len %d, " 21373d14c5d2SYehuda Sadeh "older than our %u\n", epoch, maplen, 21383d14c5d2SYehuda Sadeh osdc->osdmap->epoch); 21393d14c5d2SYehuda Sadeh } else { 214038d6453cSSage Weil int skipped_map = 0; 214138d6453cSSage Weil 21423d14c5d2SYehuda Sadeh dout("taking full map %u len %d\n", epoch, maplen); 2143a2505d63SIlya Dryomov newmap = ceph_osdmap_decode(&p, p+maplen); 21443d14c5d2SYehuda Sadeh if (IS_ERR(newmap)) { 21453d14c5d2SYehuda Sadeh err = PTR_ERR(newmap); 21463d14c5d2SYehuda Sadeh goto bad; 21473d14c5d2SYehuda Sadeh } 21483d14c5d2SYehuda Sadeh BUG_ON(!newmap); 21493d14c5d2SYehuda Sadeh oldmap = osdc->osdmap; 21503d14c5d2SYehuda Sadeh osdc->osdmap = newmap; 215138d6453cSSage Weil if (oldmap) { 215238d6453cSSage Weil if (oldmap->epoch + 1 < newmap->epoch) 215338d6453cSSage Weil skipped_map = 1; 21543d14c5d2SYehuda Sadeh ceph_osdmap_destroy(oldmap); 215538d6453cSSage Weil } 21569a1ea2dbSJosh Durgin was_full = was_full || 21579a1ea2dbSJosh Durgin ceph_osdmap_flag(osdc->osdmap, 21589a1ea2dbSJosh Durgin CEPH_OSDMAP_FULL); 21599a1ea2dbSJosh Durgin kick_requests(osdc, skipped_map, was_full); 21603d14c5d2SYehuda Sadeh } 21613d14c5d2SYehuda Sadeh p += maplen; 21623d14c5d2SYehuda Sadeh nr_maps--; 21633d14c5d2SYehuda Sadeh } 21643d14c5d2SYehuda Sadeh 2165b72e19b9SDan Carpenter if (!osdc->osdmap) 2166b72e19b9SDan Carpenter goto bad; 21673d14c5d2SYehuda Sadeh done: 21683d14c5d2SYehuda Sadeh downgrade_write(&osdc->map_sem); 21693d14c5d2SYehuda Sadeh ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch); 2170cd634fb6SSage Weil 2171cd634fb6SSage Weil /* 2172cd634fb6SSage Weil * subscribe to subsequent osdmap updates if full to ensure 2173cd634fb6SSage Weil * we find out when we are no longer full and stop returning 2174cd634fb6SSage Weil * ENOSPC. 2175cd634fb6SSage Weil */ 2176d29adb34SJosh Durgin if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL) || 2177d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD) || 2178d29adb34SJosh Durgin ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR)) 2179cd634fb6SSage Weil ceph_monc_request_next_osdmap(&osdc->client->monc); 2180cd634fb6SSage Weil 2181f9d25199SAlex Elder mutex_lock(&osdc->request_mutex); 2182f9d25199SAlex Elder __send_queued(osdc); 2183f9d25199SAlex Elder mutex_unlock(&osdc->request_mutex); 21843d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 21853d14c5d2SYehuda Sadeh wake_up_all(&osdc->client->auth_wq); 21863d14c5d2SYehuda Sadeh return; 21873d14c5d2SYehuda Sadeh 21883d14c5d2SYehuda Sadeh bad: 21893d14c5d2SYehuda Sadeh pr_err("osdc handle_map corrupt msg\n"); 21903d14c5d2SYehuda Sadeh ceph_msg_dump(msg); 21913d14c5d2SYehuda Sadeh up_write(&osdc->map_sem); 21923d14c5d2SYehuda Sadeh } 21933d14c5d2SYehuda Sadeh 21943d14c5d2SYehuda Sadeh /* 2195a40c4f10SYehuda Sadeh * watch/notify callback event infrastructure 2196a40c4f10SYehuda Sadeh * 2197a40c4f10SYehuda Sadeh * These callbacks are used both for watch and notify operations. 2198a40c4f10SYehuda Sadeh */ 2199a40c4f10SYehuda Sadeh static void __release_event(struct kref *kref) 2200a40c4f10SYehuda Sadeh { 2201a40c4f10SYehuda Sadeh struct ceph_osd_event *event = 2202a40c4f10SYehuda Sadeh container_of(kref, struct ceph_osd_event, kref); 2203a40c4f10SYehuda Sadeh 2204a40c4f10SYehuda Sadeh dout("__release_event %p\n", event); 2205a40c4f10SYehuda Sadeh kfree(event); 2206a40c4f10SYehuda Sadeh } 2207a40c4f10SYehuda Sadeh 2208a40c4f10SYehuda Sadeh static void get_event(struct ceph_osd_event *event) 2209a40c4f10SYehuda Sadeh { 2210a40c4f10SYehuda Sadeh kref_get(&event->kref); 2211a40c4f10SYehuda Sadeh } 2212a40c4f10SYehuda Sadeh 2213a40c4f10SYehuda Sadeh void ceph_osdc_put_event(struct ceph_osd_event *event) 2214a40c4f10SYehuda Sadeh { 2215a40c4f10SYehuda Sadeh kref_put(&event->kref, __release_event); 2216a40c4f10SYehuda Sadeh } 2217a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_put_event); 2218a40c4f10SYehuda Sadeh 2219a40c4f10SYehuda Sadeh static void __insert_event(struct ceph_osd_client *osdc, 2220a40c4f10SYehuda Sadeh struct ceph_osd_event *new) 2221a40c4f10SYehuda Sadeh { 2222a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2223a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2224a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2225a40c4f10SYehuda Sadeh 2226a40c4f10SYehuda Sadeh while (*p) { 2227a40c4f10SYehuda Sadeh parent = *p; 2228a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2229a40c4f10SYehuda Sadeh if (new->cookie < event->cookie) 2230a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2231a40c4f10SYehuda Sadeh else if (new->cookie > event->cookie) 2232a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2233a40c4f10SYehuda Sadeh else 2234a40c4f10SYehuda Sadeh BUG(); 2235a40c4f10SYehuda Sadeh } 2236a40c4f10SYehuda Sadeh 2237a40c4f10SYehuda Sadeh rb_link_node(&new->node, parent, p); 2238a40c4f10SYehuda Sadeh rb_insert_color(&new->node, &osdc->event_tree); 2239a40c4f10SYehuda Sadeh } 2240a40c4f10SYehuda Sadeh 2241a40c4f10SYehuda Sadeh static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc, 2242a40c4f10SYehuda Sadeh u64 cookie) 2243a40c4f10SYehuda Sadeh { 2244a40c4f10SYehuda Sadeh struct rb_node **p = &osdc->event_tree.rb_node; 2245a40c4f10SYehuda Sadeh struct rb_node *parent = NULL; 2246a40c4f10SYehuda Sadeh struct ceph_osd_event *event = NULL; 2247a40c4f10SYehuda Sadeh 2248a40c4f10SYehuda Sadeh while (*p) { 2249a40c4f10SYehuda Sadeh parent = *p; 2250a40c4f10SYehuda Sadeh event = rb_entry(parent, struct ceph_osd_event, node); 2251a40c4f10SYehuda Sadeh if (cookie < event->cookie) 2252a40c4f10SYehuda Sadeh p = &(*p)->rb_left; 2253a40c4f10SYehuda Sadeh else if (cookie > event->cookie) 2254a40c4f10SYehuda Sadeh p = &(*p)->rb_right; 2255a40c4f10SYehuda Sadeh else 2256a40c4f10SYehuda Sadeh return event; 2257a40c4f10SYehuda Sadeh } 2258a40c4f10SYehuda Sadeh return NULL; 2259a40c4f10SYehuda Sadeh } 2260a40c4f10SYehuda Sadeh 2261a40c4f10SYehuda Sadeh static void __remove_event(struct ceph_osd_event *event) 2262a40c4f10SYehuda Sadeh { 2263a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2264a40c4f10SYehuda Sadeh 2265a40c4f10SYehuda Sadeh if (!RB_EMPTY_NODE(&event->node)) { 2266a40c4f10SYehuda Sadeh dout("__remove_event removed %p\n", event); 2267a40c4f10SYehuda Sadeh rb_erase(&event->node, &osdc->event_tree); 2268a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2269a40c4f10SYehuda Sadeh } else { 2270a40c4f10SYehuda Sadeh dout("__remove_event didn't remove %p\n", event); 2271a40c4f10SYehuda Sadeh } 2272a40c4f10SYehuda Sadeh } 2273a40c4f10SYehuda Sadeh 2274a40c4f10SYehuda Sadeh int ceph_osdc_create_event(struct ceph_osd_client *osdc, 2275a40c4f10SYehuda Sadeh void (*event_cb)(u64, u64, u8, void *), 22763c663bbdSAlex Elder void *data, struct ceph_osd_event **pevent) 2277a40c4f10SYehuda Sadeh { 2278a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2279a40c4f10SYehuda Sadeh 2280a40c4f10SYehuda Sadeh event = kmalloc(sizeof(*event), GFP_NOIO); 2281a40c4f10SYehuda Sadeh if (!event) 2282a40c4f10SYehuda Sadeh return -ENOMEM; 2283a40c4f10SYehuda Sadeh 2284a40c4f10SYehuda Sadeh dout("create_event %p\n", event); 2285a40c4f10SYehuda Sadeh event->cb = event_cb; 22863c663bbdSAlex Elder event->one_shot = 0; 2287a40c4f10SYehuda Sadeh event->data = data; 2288a40c4f10SYehuda Sadeh event->osdc = osdc; 2289a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&event->osd_node); 22903ee5234dSAlex Elder RB_CLEAR_NODE(&event->node); 2291a40c4f10SYehuda Sadeh kref_init(&event->kref); /* one ref for us */ 2292a40c4f10SYehuda Sadeh kref_get(&event->kref); /* one ref for the caller */ 2293a40c4f10SYehuda Sadeh 2294a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2295a40c4f10SYehuda Sadeh event->cookie = ++osdc->event_count; 2296a40c4f10SYehuda Sadeh __insert_event(osdc, event); 2297a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2298a40c4f10SYehuda Sadeh 2299a40c4f10SYehuda Sadeh *pevent = event; 2300a40c4f10SYehuda Sadeh return 0; 2301a40c4f10SYehuda Sadeh } 2302a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_create_event); 2303a40c4f10SYehuda Sadeh 2304a40c4f10SYehuda Sadeh void ceph_osdc_cancel_event(struct ceph_osd_event *event) 2305a40c4f10SYehuda Sadeh { 2306a40c4f10SYehuda Sadeh struct ceph_osd_client *osdc = event->osdc; 2307a40c4f10SYehuda Sadeh 2308a40c4f10SYehuda Sadeh dout("cancel_event %p\n", event); 2309a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2310a40c4f10SYehuda Sadeh __remove_event(event); 2311a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2312a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); /* caller's */ 2313a40c4f10SYehuda Sadeh } 2314a40c4f10SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_cancel_event); 2315a40c4f10SYehuda Sadeh 2316a40c4f10SYehuda Sadeh 2317a40c4f10SYehuda Sadeh static void do_event_work(struct work_struct *work) 2318a40c4f10SYehuda Sadeh { 2319a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work = 2320a40c4f10SYehuda Sadeh container_of(work, struct ceph_osd_event_work, work); 2321a40c4f10SYehuda Sadeh struct ceph_osd_event *event = event_work->event; 2322a40c4f10SYehuda Sadeh u64 ver = event_work->ver; 2323a40c4f10SYehuda Sadeh u64 notify_id = event_work->notify_id; 2324a40c4f10SYehuda Sadeh u8 opcode = event_work->opcode; 2325a40c4f10SYehuda Sadeh 2326a40c4f10SYehuda Sadeh dout("do_event_work completing %p\n", event); 2327a40c4f10SYehuda Sadeh event->cb(ver, notify_id, opcode, event->data); 2328a40c4f10SYehuda Sadeh dout("do_event_work completed %p\n", event); 2329a40c4f10SYehuda Sadeh ceph_osdc_put_event(event); 2330a40c4f10SYehuda Sadeh kfree(event_work); 2331a40c4f10SYehuda Sadeh } 2332a40c4f10SYehuda Sadeh 2333a40c4f10SYehuda Sadeh 2334a40c4f10SYehuda Sadeh /* 2335a40c4f10SYehuda Sadeh * Process osd watch notifications 2336a40c4f10SYehuda Sadeh */ 23373c663bbdSAlex Elder static void handle_watch_notify(struct ceph_osd_client *osdc, 23383c663bbdSAlex Elder struct ceph_msg *msg) 2339a40c4f10SYehuda Sadeh { 2340a40c4f10SYehuda Sadeh void *p, *end; 2341a40c4f10SYehuda Sadeh u8 proto_ver; 2342a40c4f10SYehuda Sadeh u64 cookie, ver, notify_id; 2343a40c4f10SYehuda Sadeh u8 opcode; 2344a40c4f10SYehuda Sadeh struct ceph_osd_event *event; 2345a40c4f10SYehuda Sadeh struct ceph_osd_event_work *event_work; 2346a40c4f10SYehuda Sadeh 2347a40c4f10SYehuda Sadeh p = msg->front.iov_base; 2348a40c4f10SYehuda Sadeh end = p + msg->front.iov_len; 2349a40c4f10SYehuda Sadeh 2350a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, proto_ver, bad); 2351a40c4f10SYehuda Sadeh ceph_decode_8_safe(&p, end, opcode, bad); 2352a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, cookie, bad); 2353a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, ver, bad); 2354a40c4f10SYehuda Sadeh ceph_decode_64_safe(&p, end, notify_id, bad); 2355a40c4f10SYehuda Sadeh 2356a40c4f10SYehuda Sadeh spin_lock(&osdc->event_lock); 2357a40c4f10SYehuda Sadeh event = __find_event(osdc, cookie); 2358a40c4f10SYehuda Sadeh if (event) { 23593c663bbdSAlex Elder BUG_ON(event->one_shot); 2360a40c4f10SYehuda Sadeh get_event(event); 2361a40c4f10SYehuda Sadeh } 2362a40c4f10SYehuda Sadeh spin_unlock(&osdc->event_lock); 2363a40c4f10SYehuda Sadeh dout("handle_watch_notify cookie %lld ver %lld event %p\n", 2364a40c4f10SYehuda Sadeh cookie, ver, event); 2365a40c4f10SYehuda Sadeh if (event) { 2366a40c4f10SYehuda Sadeh event_work = kmalloc(sizeof(*event_work), GFP_NOIO); 2367a40c4f10SYehuda Sadeh if (!event_work) { 236891883cd2SIlya Dryomov pr_err("couldn't allocate event_work\n"); 236991883cd2SIlya Dryomov ceph_osdc_put_event(event); 237091883cd2SIlya Dryomov return; 2371a40c4f10SYehuda Sadeh } 23726b0ae409SMariusz Kozlowski INIT_WORK(&event_work->work, do_event_work); 2373a40c4f10SYehuda Sadeh event_work->event = event; 2374a40c4f10SYehuda Sadeh event_work->ver = ver; 2375a40c4f10SYehuda Sadeh event_work->notify_id = notify_id; 2376a40c4f10SYehuda Sadeh event_work->opcode = opcode; 237791883cd2SIlya Dryomov 237891883cd2SIlya Dryomov queue_work(osdc->notify_wq, &event_work->work); 2379a40c4f10SYehuda Sadeh } 2380a40c4f10SYehuda Sadeh 2381a40c4f10SYehuda Sadeh return; 2382a40c4f10SYehuda Sadeh 2383a40c4f10SYehuda Sadeh bad: 2384a40c4f10SYehuda Sadeh pr_err("osdc handle_watch_notify corrupt msg\n"); 2385a40c4f10SYehuda Sadeh } 2386a40c4f10SYehuda Sadeh 2387a40c4f10SYehuda Sadeh /* 2388e65550fdSAlex Elder * build new request AND message 2389e65550fdSAlex Elder * 2390e65550fdSAlex Elder */ 2391e65550fdSAlex Elder void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off, 2392e65550fdSAlex Elder struct ceph_snap_context *snapc, u64 snap_id, 2393e65550fdSAlex Elder struct timespec *mtime) 2394e65550fdSAlex Elder { 2395e65550fdSAlex Elder struct ceph_msg *msg = req->r_request; 2396e65550fdSAlex Elder void *p; 2397e65550fdSAlex Elder size_t msg_size; 2398e65550fdSAlex Elder int flags = req->r_flags; 2399e65550fdSAlex Elder u64 data_len; 2400e65550fdSAlex Elder unsigned int i; 2401e65550fdSAlex Elder 2402e65550fdSAlex Elder req->r_snapid = snap_id; 2403e65550fdSAlex Elder req->r_snapc = ceph_get_snap_context(snapc); 2404e65550fdSAlex Elder 2405e65550fdSAlex Elder /* encode request */ 2406e65550fdSAlex Elder msg->hdr.version = cpu_to_le16(4); 2407e65550fdSAlex Elder 2408e65550fdSAlex Elder p = msg->front.iov_base; 2409e65550fdSAlex Elder ceph_encode_32(&p, 1); /* client_inc is always 1 */ 2410e65550fdSAlex Elder req->r_request_osdmap_epoch = p; 2411e65550fdSAlex Elder p += 4; 2412e65550fdSAlex Elder req->r_request_flags = p; 2413e65550fdSAlex Elder p += 4; 2414e65550fdSAlex Elder if (req->r_flags & CEPH_OSD_FLAG_WRITE) 2415e65550fdSAlex Elder ceph_encode_timespec(p, mtime); 2416e65550fdSAlex Elder p += sizeof(struct ceph_timespec); 2417e65550fdSAlex Elder req->r_request_reassert_version = p; 2418e65550fdSAlex Elder p += sizeof(struct ceph_eversion); /* will get filled in */ 2419e65550fdSAlex Elder 2420e65550fdSAlex Elder /* oloc */ 2421e65550fdSAlex Elder ceph_encode_8(&p, 4); 2422e65550fdSAlex Elder ceph_encode_8(&p, 4); 2423e65550fdSAlex Elder ceph_encode_32(&p, 8 + 4 + 4); 2424e65550fdSAlex Elder req->r_request_pool = p; 2425e65550fdSAlex Elder p += 8; 2426e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2427e65550fdSAlex Elder ceph_encode_32(&p, 0); /* key len */ 2428e65550fdSAlex Elder 2429e65550fdSAlex Elder ceph_encode_8(&p, 1); 2430e65550fdSAlex Elder req->r_request_pgid = p; 2431e65550fdSAlex Elder p += 8 + 4; 2432e65550fdSAlex Elder ceph_encode_32(&p, -1); /* preferred */ 2433e65550fdSAlex Elder 2434e65550fdSAlex Elder /* oid */ 24353c972c95SIlya Dryomov ceph_encode_32(&p, req->r_base_oid.name_len); 24363c972c95SIlya Dryomov memcpy(p, req->r_base_oid.name, req->r_base_oid.name_len); 24373c972c95SIlya Dryomov dout("oid '%.*s' len %d\n", req->r_base_oid.name_len, 24383c972c95SIlya Dryomov req->r_base_oid.name, req->r_base_oid.name_len); 24393c972c95SIlya Dryomov p += req->r_base_oid.name_len; 2440e65550fdSAlex Elder 2441e65550fdSAlex Elder /* ops--can imply data */ 2442e65550fdSAlex Elder ceph_encode_16(&p, (u16)req->r_num_ops); 2443e65550fdSAlex Elder data_len = 0; 2444e65550fdSAlex Elder for (i = 0; i < req->r_num_ops; i++) { 2445e65550fdSAlex Elder data_len += osd_req_encode_op(req, p, i); 2446e65550fdSAlex Elder p += sizeof(struct ceph_osd_op); 2447e65550fdSAlex Elder } 2448e65550fdSAlex Elder 2449e65550fdSAlex Elder /* snaps */ 2450e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapid); 2451e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc ? req->r_snapc->seq : 0); 2452e65550fdSAlex Elder ceph_encode_32(&p, req->r_snapc ? req->r_snapc->num_snaps : 0); 2453e65550fdSAlex Elder if (req->r_snapc) { 2454e65550fdSAlex Elder for (i = 0; i < snapc->num_snaps; i++) { 2455e65550fdSAlex Elder ceph_encode_64(&p, req->r_snapc->snaps[i]); 2456e65550fdSAlex Elder } 2457e65550fdSAlex Elder } 2458e65550fdSAlex Elder 2459e65550fdSAlex Elder req->r_request_attempts = p; 2460e65550fdSAlex Elder p += 4; 2461e65550fdSAlex Elder 2462e65550fdSAlex Elder /* data */ 2463e65550fdSAlex Elder if (flags & CEPH_OSD_FLAG_WRITE) { 2464e65550fdSAlex Elder u16 data_off; 2465e65550fdSAlex Elder 2466e65550fdSAlex Elder /* 2467e65550fdSAlex Elder * The header "data_off" is a hint to the receiver 2468e65550fdSAlex Elder * allowing it to align received data into its 2469e65550fdSAlex Elder * buffers such that there's no need to re-copy 2470e65550fdSAlex Elder * it before writing it to disk (direct I/O). 2471e65550fdSAlex Elder */ 2472e65550fdSAlex Elder data_off = (u16) (off & 0xffff); 2473e65550fdSAlex Elder req->r_request->hdr.data_off = cpu_to_le16(data_off); 2474e65550fdSAlex Elder } 2475e65550fdSAlex Elder req->r_request->hdr.data_len = cpu_to_le32(data_len); 2476e65550fdSAlex Elder 2477e65550fdSAlex Elder BUG_ON(p > msg->front.iov_base + msg->front.iov_len); 2478e65550fdSAlex Elder msg_size = p - msg->front.iov_base; 2479e65550fdSAlex Elder msg->front.iov_len = msg_size; 2480e65550fdSAlex Elder msg->hdr.front_len = cpu_to_le32(msg_size); 2481e65550fdSAlex Elder 2482e65550fdSAlex Elder dout("build_request msg_size was %d\n", (int)msg_size); 2483e65550fdSAlex Elder } 2484e65550fdSAlex Elder EXPORT_SYMBOL(ceph_osdc_build_request); 2485e65550fdSAlex Elder 2486e65550fdSAlex Elder /* 24873d14c5d2SYehuda Sadeh * Register request, send initial attempt. 24883d14c5d2SYehuda Sadeh */ 24893d14c5d2SYehuda Sadeh int ceph_osdc_start_request(struct ceph_osd_client *osdc, 24903d14c5d2SYehuda Sadeh struct ceph_osd_request *req, 24913d14c5d2SYehuda Sadeh bool nofail) 24923d14c5d2SYehuda Sadeh { 24930bbfdfe8SIlya Dryomov int rc; 24943d14c5d2SYehuda Sadeh 24953d14c5d2SYehuda Sadeh down_read(&osdc->map_sem); 24963d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 24970bbfdfe8SIlya Dryomov 24980bbfdfe8SIlya Dryomov rc = __ceph_osdc_start_request(osdc, req, nofail); 24990bbfdfe8SIlya Dryomov 25003d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 25013d14c5d2SYehuda Sadeh up_read(&osdc->map_sem); 25020bbfdfe8SIlya Dryomov 25033d14c5d2SYehuda Sadeh return rc; 25043d14c5d2SYehuda Sadeh } 25053d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_start_request); 25063d14c5d2SYehuda Sadeh 25073d14c5d2SYehuda Sadeh /* 2508c9f9b93dSIlya Dryomov * Unregister a registered request. The request is not completed (i.e. 2509c9f9b93dSIlya Dryomov * no callbacks or wakeups) - higher layers are supposed to know what 2510c9f9b93dSIlya Dryomov * they are canceling. 2511c9f9b93dSIlya Dryomov */ 2512c9f9b93dSIlya Dryomov void ceph_osdc_cancel_request(struct ceph_osd_request *req) 2513c9f9b93dSIlya Dryomov { 2514c9f9b93dSIlya Dryomov struct ceph_osd_client *osdc = req->r_osdc; 2515c9f9b93dSIlya Dryomov 2516c9f9b93dSIlya Dryomov mutex_lock(&osdc->request_mutex); 2517c9f9b93dSIlya Dryomov if (req->r_linger) 2518c9f9b93dSIlya Dryomov __unregister_linger_request(osdc, req); 2519c9f9b93dSIlya Dryomov __unregister_request(osdc, req); 2520c9f9b93dSIlya Dryomov mutex_unlock(&osdc->request_mutex); 2521c9f9b93dSIlya Dryomov 2522c9f9b93dSIlya Dryomov dout("%s %p tid %llu canceled\n", __func__, req, req->r_tid); 2523c9f9b93dSIlya Dryomov } 2524c9f9b93dSIlya Dryomov EXPORT_SYMBOL(ceph_osdc_cancel_request); 2525c9f9b93dSIlya Dryomov 2526c9f9b93dSIlya Dryomov /* 25273d14c5d2SYehuda Sadeh * wait for a request to complete 25283d14c5d2SYehuda Sadeh */ 25293d14c5d2SYehuda Sadeh int ceph_osdc_wait_request(struct ceph_osd_client *osdc, 25303d14c5d2SYehuda Sadeh struct ceph_osd_request *req) 25313d14c5d2SYehuda Sadeh { 25323d14c5d2SYehuda Sadeh int rc; 25333d14c5d2SYehuda Sadeh 2534c9f9b93dSIlya Dryomov dout("%s %p tid %llu\n", __func__, req, req->r_tid); 2535c9f9b93dSIlya Dryomov 25363d14c5d2SYehuda Sadeh rc = wait_for_completion_interruptible(&req->r_completion); 25373d14c5d2SYehuda Sadeh if (rc < 0) { 2538c9f9b93dSIlya Dryomov dout("%s %p tid %llu interrupted\n", __func__, req, req->r_tid); 2539c9f9b93dSIlya Dryomov ceph_osdc_cancel_request(req); 254025845472SSage Weil complete_request(req); 25413d14c5d2SYehuda Sadeh return rc; 25423d14c5d2SYehuda Sadeh } 25433d14c5d2SYehuda Sadeh 2544c9f9b93dSIlya Dryomov dout("%s %p tid %llu result %d\n", __func__, req, req->r_tid, 2545c9f9b93dSIlya Dryomov req->r_result); 25463d14c5d2SYehuda Sadeh return req->r_result; 25473d14c5d2SYehuda Sadeh } 25483d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_wait_request); 25493d14c5d2SYehuda Sadeh 25503d14c5d2SYehuda Sadeh /* 25513d14c5d2SYehuda Sadeh * sync - wait for all in-flight requests to flush. avoid starvation. 25523d14c5d2SYehuda Sadeh */ 25533d14c5d2SYehuda Sadeh void ceph_osdc_sync(struct ceph_osd_client *osdc) 25543d14c5d2SYehuda Sadeh { 25553d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 25563d14c5d2SYehuda Sadeh u64 last_tid, next_tid = 0; 25573d14c5d2SYehuda Sadeh 25583d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 25593d14c5d2SYehuda Sadeh last_tid = osdc->last_tid; 25603d14c5d2SYehuda Sadeh while (1) { 25613d14c5d2SYehuda Sadeh req = __lookup_request_ge(osdc, next_tid); 25623d14c5d2SYehuda Sadeh if (!req) 25633d14c5d2SYehuda Sadeh break; 25643d14c5d2SYehuda Sadeh if (req->r_tid > last_tid) 25653d14c5d2SYehuda Sadeh break; 25663d14c5d2SYehuda Sadeh 25673d14c5d2SYehuda Sadeh next_tid = req->r_tid + 1; 25683d14c5d2SYehuda Sadeh if ((req->r_flags & CEPH_OSD_FLAG_WRITE) == 0) 25693d14c5d2SYehuda Sadeh continue; 25703d14c5d2SYehuda Sadeh 25713d14c5d2SYehuda Sadeh ceph_osdc_get_request(req); 25723d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 25733d14c5d2SYehuda Sadeh dout("sync waiting on tid %llu (last is %llu)\n", 25743d14c5d2SYehuda Sadeh req->r_tid, last_tid); 25753d14c5d2SYehuda Sadeh wait_for_completion(&req->r_safe_completion); 25763d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 25773d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 25783d14c5d2SYehuda Sadeh } 25793d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 25803d14c5d2SYehuda Sadeh dout("sync done (thru tid %llu)\n", last_tid); 25813d14c5d2SYehuda Sadeh } 25823d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_sync); 25833d14c5d2SYehuda Sadeh 25843d14c5d2SYehuda Sadeh /* 2585dd935f44SJosh Durgin * Call all pending notify callbacks - for use after a watch is 2586dd935f44SJosh Durgin * unregistered, to make sure no more callbacks for it will be invoked 2587dd935f44SJosh Durgin */ 2588f6479449Sstephen hemminger void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc) 2589dd935f44SJosh Durgin { 2590dd935f44SJosh Durgin flush_workqueue(osdc->notify_wq); 2591dd935f44SJosh Durgin } 2592dd935f44SJosh Durgin EXPORT_SYMBOL(ceph_osdc_flush_notifies); 2593dd935f44SJosh Durgin 2594dd935f44SJosh Durgin 2595dd935f44SJosh Durgin /* 25963d14c5d2SYehuda Sadeh * init, shutdown 25973d14c5d2SYehuda Sadeh */ 25983d14c5d2SYehuda Sadeh int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client) 25993d14c5d2SYehuda Sadeh { 26003d14c5d2SYehuda Sadeh int err; 26013d14c5d2SYehuda Sadeh 26023d14c5d2SYehuda Sadeh dout("init\n"); 26033d14c5d2SYehuda Sadeh osdc->client = client; 26043d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 26053d14c5d2SYehuda Sadeh init_rwsem(&osdc->map_sem); 26063d14c5d2SYehuda Sadeh init_completion(&osdc->map_waiters); 26073d14c5d2SYehuda Sadeh osdc->last_requested_map = 0; 26083d14c5d2SYehuda Sadeh mutex_init(&osdc->request_mutex); 26093d14c5d2SYehuda Sadeh osdc->last_tid = 0; 26103d14c5d2SYehuda Sadeh osdc->osds = RB_ROOT; 26113d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->osd_lru); 26123d14c5d2SYehuda Sadeh osdc->requests = RB_ROOT; 26133d14c5d2SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_lru); 26146f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_unsent); 26156f6c7006SSage Weil INIT_LIST_HEAD(&osdc->req_notarget); 2616a40c4f10SYehuda Sadeh INIT_LIST_HEAD(&osdc->req_linger); 26173d14c5d2SYehuda Sadeh osdc->num_requests = 0; 26183d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout); 26193d14c5d2SYehuda Sadeh INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout); 2620a40c4f10SYehuda Sadeh spin_lock_init(&osdc->event_lock); 2621a40c4f10SYehuda Sadeh osdc->event_tree = RB_ROOT; 2622a40c4f10SYehuda Sadeh osdc->event_count = 0; 26233d14c5d2SYehuda Sadeh 26243d14c5d2SYehuda Sadeh schedule_delayed_work(&osdc->osds_timeout_work, 26253d14c5d2SYehuda Sadeh round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ)); 26263d14c5d2SYehuda Sadeh 26273d14c5d2SYehuda Sadeh err = -ENOMEM; 26283d14c5d2SYehuda Sadeh osdc->req_mempool = mempool_create_kmalloc_pool(10, 26293d14c5d2SYehuda Sadeh sizeof(struct ceph_osd_request)); 26303d14c5d2SYehuda Sadeh if (!osdc->req_mempool) 26313d14c5d2SYehuda Sadeh goto out; 26323d14c5d2SYehuda Sadeh 2633d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op, CEPH_MSG_OSD_OP, 2634d50b409fSSage Weil OSD_OP_FRONT_LEN, 10, true, 26353d14c5d2SYehuda Sadeh "osd_op"); 26363d14c5d2SYehuda Sadeh if (err < 0) 26373d14c5d2SYehuda Sadeh goto out_mempool; 2638d50b409fSSage Weil err = ceph_msgpool_init(&osdc->msgpool_op_reply, CEPH_MSG_OSD_OPREPLY, 26393d14c5d2SYehuda Sadeh OSD_OPREPLY_FRONT_LEN, 10, true, 26403d14c5d2SYehuda Sadeh "osd_op_reply"); 26413d14c5d2SYehuda Sadeh if (err < 0) 26423d14c5d2SYehuda Sadeh goto out_msgpool; 2643a40c4f10SYehuda Sadeh 2644dbcae088SDan Carpenter err = -ENOMEM; 2645a40c4f10SYehuda Sadeh osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify"); 2646dbcae088SDan Carpenter if (!osdc->notify_wq) 2647c172ec5cSIlya Dryomov goto out_msgpool_reply; 2648c172ec5cSIlya Dryomov 26493d14c5d2SYehuda Sadeh return 0; 26503d14c5d2SYehuda Sadeh 2651c172ec5cSIlya Dryomov out_msgpool_reply: 2652c172ec5cSIlya Dryomov ceph_msgpool_destroy(&osdc->msgpool_op_reply); 26533d14c5d2SYehuda Sadeh out_msgpool: 26543d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 26553d14c5d2SYehuda Sadeh out_mempool: 26563d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 26573d14c5d2SYehuda Sadeh out: 26583d14c5d2SYehuda Sadeh return err; 26593d14c5d2SYehuda Sadeh } 26603d14c5d2SYehuda Sadeh 26613d14c5d2SYehuda Sadeh void ceph_osdc_stop(struct ceph_osd_client *osdc) 26623d14c5d2SYehuda Sadeh { 2663a40c4f10SYehuda Sadeh flush_workqueue(osdc->notify_wq); 2664a40c4f10SYehuda Sadeh destroy_workqueue(osdc->notify_wq); 26653d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->timeout_work); 26663d14c5d2SYehuda Sadeh cancel_delayed_work_sync(&osdc->osds_timeout_work); 26673d14c5d2SYehuda Sadeh if (osdc->osdmap) { 26683d14c5d2SYehuda Sadeh ceph_osdmap_destroy(osdc->osdmap); 26693d14c5d2SYehuda Sadeh osdc->osdmap = NULL; 26703d14c5d2SYehuda Sadeh } 2671aca420bcSSage Weil remove_all_osds(osdc); 26723d14c5d2SYehuda Sadeh mempool_destroy(osdc->req_mempool); 26733d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op); 26743d14c5d2SYehuda Sadeh ceph_msgpool_destroy(&osdc->msgpool_op_reply); 26753d14c5d2SYehuda Sadeh } 26763d14c5d2SYehuda Sadeh 26773d14c5d2SYehuda Sadeh /* 26783d14c5d2SYehuda Sadeh * Read some contiguous pages. If we cross a stripe boundary, shorten 26793d14c5d2SYehuda Sadeh * *plen. Return number of bytes read, or error. 26803d14c5d2SYehuda Sadeh */ 26813d14c5d2SYehuda Sadeh int ceph_osdc_readpages(struct ceph_osd_client *osdc, 26823d14c5d2SYehuda Sadeh struct ceph_vino vino, struct ceph_file_layout *layout, 26833d14c5d2SYehuda Sadeh u64 off, u64 *plen, 26843d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 2685b7495fc2SSage Weil struct page **pages, int num_pages, int page_align) 26863d14c5d2SYehuda Sadeh { 26873d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 26883d14c5d2SYehuda Sadeh int rc = 0; 26893d14c5d2SYehuda Sadeh 26903d14c5d2SYehuda Sadeh dout("readpages on ino %llx.%llx on %llu~%llu\n", vino.ino, 26913d14c5d2SYehuda Sadeh vino.snap, off, *plen); 2692715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, plen, 0, 1, 26933d14c5d2SYehuda Sadeh CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ, 2694acead002SAlex Elder NULL, truncate_seq, truncate_size, 2695153e5167SAlex Elder false); 26966816282dSSage Weil if (IS_ERR(req)) 26976816282dSSage Weil return PTR_ERR(req); 26983d14c5d2SYehuda Sadeh 26993d14c5d2SYehuda Sadeh /* it may be a short read due to an object boundary */ 27000fff87ecSAlex Elder 2701406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, 2702a4ce40a9SAlex Elder pages, *plen, page_align, false, false); 27033d14c5d2SYehuda Sadeh 2704e0c59487SAlex Elder dout("readpages final extent is %llu~%llu (%llu bytes align %d)\n", 270543bfe5deSAlex Elder off, *plen, *plen, page_align); 27063d14c5d2SYehuda Sadeh 270779528734SAlex Elder ceph_osdc_build_request(req, off, NULL, vino.snap, NULL); 270802ee07d3SAlex Elder 27093d14c5d2SYehuda Sadeh rc = ceph_osdc_start_request(osdc, req, false); 27103d14c5d2SYehuda Sadeh if (!rc) 27113d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 27123d14c5d2SYehuda Sadeh 27133d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 27143d14c5d2SYehuda Sadeh dout("readpages result %d\n", rc); 27153d14c5d2SYehuda Sadeh return rc; 27163d14c5d2SYehuda Sadeh } 27173d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_readpages); 27183d14c5d2SYehuda Sadeh 27193d14c5d2SYehuda Sadeh /* 27203d14c5d2SYehuda Sadeh * do a synchronous write on N pages 27213d14c5d2SYehuda Sadeh */ 27223d14c5d2SYehuda Sadeh int ceph_osdc_writepages(struct ceph_osd_client *osdc, struct ceph_vino vino, 27233d14c5d2SYehuda Sadeh struct ceph_file_layout *layout, 27243d14c5d2SYehuda Sadeh struct ceph_snap_context *snapc, 27253d14c5d2SYehuda Sadeh u64 off, u64 len, 27263d14c5d2SYehuda Sadeh u32 truncate_seq, u64 truncate_size, 27273d14c5d2SYehuda Sadeh struct timespec *mtime, 272824808826SAlex Elder struct page **pages, int num_pages) 27293d14c5d2SYehuda Sadeh { 27303d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 27313d14c5d2SYehuda Sadeh int rc = 0; 2732b7495fc2SSage Weil int page_align = off & ~PAGE_MASK; 27333d14c5d2SYehuda Sadeh 2734acead002SAlex Elder BUG_ON(vino.snap != CEPH_NOSNAP); /* snapshots aren't writeable */ 2735715e4cd4SYan, Zheng req = ceph_osdc_new_request(osdc, layout, vino, off, &len, 0, 1, 27363d14c5d2SYehuda Sadeh CEPH_OSD_OP_WRITE, 273724808826SAlex Elder CEPH_OSD_FLAG_ONDISK | CEPH_OSD_FLAG_WRITE, 2738acead002SAlex Elder snapc, truncate_seq, truncate_size, 2739153e5167SAlex Elder true); 27406816282dSSage Weil if (IS_ERR(req)) 27416816282dSSage Weil return PTR_ERR(req); 27423d14c5d2SYehuda Sadeh 27433d14c5d2SYehuda Sadeh /* it may be a short write due to an object boundary */ 2744406e2c9fSAlex Elder osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align, 274543bfe5deSAlex Elder false, false); 274643bfe5deSAlex Elder dout("writepages %llu~%llu (%llu bytes)\n", off, len, len); 27473d14c5d2SYehuda Sadeh 274879528734SAlex Elder ceph_osdc_build_request(req, off, snapc, CEPH_NOSNAP, mtime); 274902ee07d3SAlex Elder 275087f979d3SAlex Elder rc = ceph_osdc_start_request(osdc, req, true); 27513d14c5d2SYehuda Sadeh if (!rc) 27523d14c5d2SYehuda Sadeh rc = ceph_osdc_wait_request(osdc, req); 27533d14c5d2SYehuda Sadeh 27543d14c5d2SYehuda Sadeh ceph_osdc_put_request(req); 27553d14c5d2SYehuda Sadeh if (rc == 0) 27563d14c5d2SYehuda Sadeh rc = len; 27573d14c5d2SYehuda Sadeh dout("writepages result %d\n", rc); 27583d14c5d2SYehuda Sadeh return rc; 27593d14c5d2SYehuda Sadeh } 27603d14c5d2SYehuda Sadeh EXPORT_SYMBOL(ceph_osdc_writepages); 27613d14c5d2SYehuda Sadeh 27625522ae0bSAlex Elder int ceph_osdc_setup(void) 27635522ae0bSAlex Elder { 27645522ae0bSAlex Elder BUG_ON(ceph_osd_request_cache); 27655522ae0bSAlex Elder ceph_osd_request_cache = kmem_cache_create("ceph_osd_request", 27665522ae0bSAlex Elder sizeof (struct ceph_osd_request), 27675522ae0bSAlex Elder __alignof__(struct ceph_osd_request), 27685522ae0bSAlex Elder 0, NULL); 27695522ae0bSAlex Elder 27705522ae0bSAlex Elder return ceph_osd_request_cache ? 0 : -ENOMEM; 27715522ae0bSAlex Elder } 27725522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_setup); 27735522ae0bSAlex Elder 27745522ae0bSAlex Elder void ceph_osdc_cleanup(void) 27755522ae0bSAlex Elder { 27765522ae0bSAlex Elder BUG_ON(!ceph_osd_request_cache); 27775522ae0bSAlex Elder kmem_cache_destroy(ceph_osd_request_cache); 27785522ae0bSAlex Elder ceph_osd_request_cache = NULL; 27795522ae0bSAlex Elder } 27805522ae0bSAlex Elder EXPORT_SYMBOL(ceph_osdc_cleanup); 27815522ae0bSAlex Elder 27823d14c5d2SYehuda Sadeh /* 27833d14c5d2SYehuda Sadeh * handle incoming message 27843d14c5d2SYehuda Sadeh */ 27853d14c5d2SYehuda Sadeh static void dispatch(struct ceph_connection *con, struct ceph_msg *msg) 27863d14c5d2SYehuda Sadeh { 27873d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 27883d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc; 27893d14c5d2SYehuda Sadeh int type = le16_to_cpu(msg->hdr.type); 27903d14c5d2SYehuda Sadeh 27913d14c5d2SYehuda Sadeh if (!osd) 27923d14c5d2SYehuda Sadeh goto out; 27933d14c5d2SYehuda Sadeh osdc = osd->o_osdc; 27943d14c5d2SYehuda Sadeh 27953d14c5d2SYehuda Sadeh switch (type) { 27963d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 27973d14c5d2SYehuda Sadeh ceph_osdc_handle_map(osdc, msg); 27983d14c5d2SYehuda Sadeh break; 27993d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 28003d14c5d2SYehuda Sadeh handle_reply(osdc, msg, con); 28013d14c5d2SYehuda Sadeh break; 2802a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2803a40c4f10SYehuda Sadeh handle_watch_notify(osdc, msg); 2804a40c4f10SYehuda Sadeh break; 28053d14c5d2SYehuda Sadeh 28063d14c5d2SYehuda Sadeh default: 28073d14c5d2SYehuda Sadeh pr_err("received unknown message type %d %s\n", type, 28083d14c5d2SYehuda Sadeh ceph_msg_type_name(type)); 28093d14c5d2SYehuda Sadeh } 28103d14c5d2SYehuda Sadeh out: 28113d14c5d2SYehuda Sadeh ceph_msg_put(msg); 28123d14c5d2SYehuda Sadeh } 28133d14c5d2SYehuda Sadeh 28143d14c5d2SYehuda Sadeh /* 28153d14c5d2SYehuda Sadeh * lookup and return message for incoming reply. set up reply message 28163d14c5d2SYehuda Sadeh * pages. 28173d14c5d2SYehuda Sadeh */ 28183d14c5d2SYehuda Sadeh static struct ceph_msg *get_reply(struct ceph_connection *con, 28193d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 28203d14c5d2SYehuda Sadeh int *skip) 28213d14c5d2SYehuda Sadeh { 28223d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28233d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = osd->o_osdc; 28243d14c5d2SYehuda Sadeh struct ceph_msg *m; 28253d14c5d2SYehuda Sadeh struct ceph_osd_request *req; 28263f0a4ac5SIlya Dryomov int front_len = le32_to_cpu(hdr->front_len); 28273d14c5d2SYehuda Sadeh int data_len = le32_to_cpu(hdr->data_len); 28283d14c5d2SYehuda Sadeh u64 tid; 28293d14c5d2SYehuda Sadeh 28303d14c5d2SYehuda Sadeh tid = le64_to_cpu(hdr->tid); 28313d14c5d2SYehuda Sadeh mutex_lock(&osdc->request_mutex); 28323d14c5d2SYehuda Sadeh req = __lookup_request(osdc, tid); 28333d14c5d2SYehuda Sadeh if (!req) { 28343d14c5d2SYehuda Sadeh *skip = 1; 28353d14c5d2SYehuda Sadeh m = NULL; 2836756a16a5SSage Weil dout("get_reply unknown tid %llu from osd%d\n", tid, 28373d14c5d2SYehuda Sadeh osd->o_osd); 28383d14c5d2SYehuda Sadeh goto out; 28393d14c5d2SYehuda Sadeh } 28403d14c5d2SYehuda Sadeh 2841ace6d3a9SAlex Elder if (req->r_reply->con) 28428921d114SAlex Elder dout("%s revoking msg %p from old con %p\n", __func__, 2843ace6d3a9SAlex Elder req->r_reply, req->r_reply->con); 28448921d114SAlex Elder ceph_msg_revoke_incoming(req->r_reply); 28453d14c5d2SYehuda Sadeh 2846f2be82b0SIlya Dryomov if (front_len > req->r_reply->front_alloc_len) { 2847b9a67899SJoe Perches pr_warn("get_reply front %d > preallocated %d (%u#%llu)\n", 2848f2be82b0SIlya Dryomov front_len, req->r_reply->front_alloc_len, 28494974341eSAlex Elder (unsigned int)con->peer_name.type, 28504974341eSAlex Elder le64_to_cpu(con->peer_name.num)); 28513f0a4ac5SIlya Dryomov m = ceph_msg_new(CEPH_MSG_OSD_OPREPLY, front_len, GFP_NOFS, 28523f0a4ac5SIlya Dryomov false); 28533d14c5d2SYehuda Sadeh if (!m) 28543d14c5d2SYehuda Sadeh goto out; 28553d14c5d2SYehuda Sadeh ceph_msg_put(req->r_reply); 28563d14c5d2SYehuda Sadeh req->r_reply = m; 28573d14c5d2SYehuda Sadeh } 28583d14c5d2SYehuda Sadeh m = ceph_msg_get(req->r_reply); 28593d14c5d2SYehuda Sadeh 28603d14c5d2SYehuda Sadeh if (data_len > 0) { 2861a4ce40a9SAlex Elder struct ceph_osd_data *osd_data; 28620fff87ecSAlex Elder 2863a4ce40a9SAlex Elder /* 2864a4ce40a9SAlex Elder * XXX This is assuming there is only one op containing 2865a4ce40a9SAlex Elder * XXX page data. Probably OK for reads, but this 2866a4ce40a9SAlex Elder * XXX ought to be done more generally. 2867a4ce40a9SAlex Elder */ 2868406e2c9fSAlex Elder osd_data = osd_req_op_extent_osd_data(req, 0); 28690fff87ecSAlex Elder if (osd_data->type == CEPH_OSD_DATA_TYPE_PAGES) { 28700fff87ecSAlex Elder if (osd_data->pages && 2871e0c59487SAlex Elder unlikely(osd_data->length < data_len)) { 28722ac2b7a6SAlex Elder 2873b9a67899SJoe Perches pr_warn("tid %lld reply has %d bytes we had only %llu bytes ready\n", 2874e0c59487SAlex Elder tid, data_len, osd_data->length); 28753d14c5d2SYehuda Sadeh *skip = 1; 28763d14c5d2SYehuda Sadeh ceph_msg_put(m); 28773d14c5d2SYehuda Sadeh m = NULL; 28783d14c5d2SYehuda Sadeh goto out; 28793d14c5d2SYehuda Sadeh } 28803d14c5d2SYehuda Sadeh } 28812ac2b7a6SAlex Elder } 28823d14c5d2SYehuda Sadeh *skip = 0; 28833d14c5d2SYehuda Sadeh dout("get_reply tid %lld %p\n", tid, m); 28843d14c5d2SYehuda Sadeh 28853d14c5d2SYehuda Sadeh out: 28863d14c5d2SYehuda Sadeh mutex_unlock(&osdc->request_mutex); 28873d14c5d2SYehuda Sadeh return m; 28883d14c5d2SYehuda Sadeh 28893d14c5d2SYehuda Sadeh } 28903d14c5d2SYehuda Sadeh 28913d14c5d2SYehuda Sadeh static struct ceph_msg *alloc_msg(struct ceph_connection *con, 28923d14c5d2SYehuda Sadeh struct ceph_msg_header *hdr, 28933d14c5d2SYehuda Sadeh int *skip) 28943d14c5d2SYehuda Sadeh { 28953d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 28963d14c5d2SYehuda Sadeh int type = le16_to_cpu(hdr->type); 28973d14c5d2SYehuda Sadeh int front = le32_to_cpu(hdr->front_len); 28983d14c5d2SYehuda Sadeh 28991c20f2d2SAlex Elder *skip = 0; 29003d14c5d2SYehuda Sadeh switch (type) { 29013d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_MAP: 2902a40c4f10SYehuda Sadeh case CEPH_MSG_WATCH_NOTIFY: 2903b61c2763SSage Weil return ceph_msg_new(type, front, GFP_NOFS, false); 29043d14c5d2SYehuda Sadeh case CEPH_MSG_OSD_OPREPLY: 29053d14c5d2SYehuda Sadeh return get_reply(con, hdr, skip); 29063d14c5d2SYehuda Sadeh default: 29073d14c5d2SYehuda Sadeh pr_info("alloc_msg unexpected msg type %d from osd%d\n", type, 29083d14c5d2SYehuda Sadeh osd->o_osd); 29093d14c5d2SYehuda Sadeh *skip = 1; 29103d14c5d2SYehuda Sadeh return NULL; 29113d14c5d2SYehuda Sadeh } 29123d14c5d2SYehuda Sadeh } 29133d14c5d2SYehuda Sadeh 29143d14c5d2SYehuda Sadeh /* 29153d14c5d2SYehuda Sadeh * Wrappers to refcount containing ceph_osd struct 29163d14c5d2SYehuda Sadeh */ 29173d14c5d2SYehuda Sadeh static struct ceph_connection *get_osd_con(struct ceph_connection *con) 29183d14c5d2SYehuda Sadeh { 29193d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29203d14c5d2SYehuda Sadeh if (get_osd(osd)) 29213d14c5d2SYehuda Sadeh return con; 29223d14c5d2SYehuda Sadeh return NULL; 29233d14c5d2SYehuda Sadeh } 29243d14c5d2SYehuda Sadeh 29253d14c5d2SYehuda Sadeh static void put_osd_con(struct ceph_connection *con) 29263d14c5d2SYehuda Sadeh { 29273d14c5d2SYehuda Sadeh struct ceph_osd *osd = con->private; 29283d14c5d2SYehuda Sadeh put_osd(osd); 29293d14c5d2SYehuda Sadeh } 29303d14c5d2SYehuda Sadeh 29313d14c5d2SYehuda Sadeh /* 29323d14c5d2SYehuda Sadeh * authentication 29333d14c5d2SYehuda Sadeh */ 2934a3530df3SAlex Elder /* 2935a3530df3SAlex Elder * Note: returned pointer is the address of a structure that's 2936a3530df3SAlex Elder * managed separately. Caller must *not* attempt to free it. 2937a3530df3SAlex Elder */ 2938a3530df3SAlex Elder static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con, 29398f43fb53SAlex Elder int *proto, int force_new) 29403d14c5d2SYehuda Sadeh { 29413d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 29423d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 29433d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 294474f1869fSAlex Elder struct ceph_auth_handshake *auth = &o->o_auth; 29453d14c5d2SYehuda Sadeh 294674f1869fSAlex Elder if (force_new && auth->authorizer) { 294727859f97SSage Weil ceph_auth_destroy_authorizer(ac, auth->authorizer); 294874f1869fSAlex Elder auth->authorizer = NULL; 29493d14c5d2SYehuda Sadeh } 295027859f97SSage Weil if (!auth->authorizer) { 295127859f97SSage Weil int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 2952a3530df3SAlex Elder auth); 29533d14c5d2SYehuda Sadeh if (ret) 2954a3530df3SAlex Elder return ERR_PTR(ret); 295527859f97SSage Weil } else { 295627859f97SSage Weil int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_OSD, 29570bed9b5cSSage Weil auth); 29580bed9b5cSSage Weil if (ret) 29590bed9b5cSSage Weil return ERR_PTR(ret); 29603d14c5d2SYehuda Sadeh } 29613d14c5d2SYehuda Sadeh *proto = ac->protocol; 296274f1869fSAlex Elder 2963a3530df3SAlex Elder return auth; 29643d14c5d2SYehuda Sadeh } 29653d14c5d2SYehuda Sadeh 29663d14c5d2SYehuda Sadeh 29673d14c5d2SYehuda Sadeh static int verify_authorizer_reply(struct ceph_connection *con, int len) 29683d14c5d2SYehuda Sadeh { 29693d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 29703d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 29713d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 29723d14c5d2SYehuda Sadeh 297327859f97SSage Weil return ceph_auth_verify_authorizer_reply(ac, o->o_auth.authorizer, len); 29743d14c5d2SYehuda Sadeh } 29753d14c5d2SYehuda Sadeh 29763d14c5d2SYehuda Sadeh static int invalidate_authorizer(struct ceph_connection *con) 29773d14c5d2SYehuda Sadeh { 29783d14c5d2SYehuda Sadeh struct ceph_osd *o = con->private; 29793d14c5d2SYehuda Sadeh struct ceph_osd_client *osdc = o->o_osdc; 29803d14c5d2SYehuda Sadeh struct ceph_auth_client *ac = osdc->client->monc.auth; 29813d14c5d2SYehuda Sadeh 298227859f97SSage Weil ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_OSD); 29833d14c5d2SYehuda Sadeh return ceph_monc_validate_auth(&osdc->client->monc); 29843d14c5d2SYehuda Sadeh } 29853d14c5d2SYehuda Sadeh 298633d07337SYan, Zheng static int sign_message(struct ceph_connection *con, struct ceph_msg *msg) 298733d07337SYan, Zheng { 298833d07337SYan, Zheng struct ceph_osd *o = con->private; 298933d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 299033d07337SYan, Zheng return ceph_auth_sign_message(auth, msg); 299133d07337SYan, Zheng } 299233d07337SYan, Zheng 299333d07337SYan, Zheng static int check_message_signature(struct ceph_connection *con, struct ceph_msg *msg) 299433d07337SYan, Zheng { 299533d07337SYan, Zheng struct ceph_osd *o = con->private; 299633d07337SYan, Zheng struct ceph_auth_handshake *auth = &o->o_auth; 299733d07337SYan, Zheng return ceph_auth_check_message_signature(auth, msg); 299833d07337SYan, Zheng } 299933d07337SYan, Zheng 30003d14c5d2SYehuda Sadeh static const struct ceph_connection_operations osd_con_ops = { 30013d14c5d2SYehuda Sadeh .get = get_osd_con, 30023d14c5d2SYehuda Sadeh .put = put_osd_con, 30033d14c5d2SYehuda Sadeh .dispatch = dispatch, 30043d14c5d2SYehuda Sadeh .get_authorizer = get_authorizer, 30053d14c5d2SYehuda Sadeh .verify_authorizer_reply = verify_authorizer_reply, 30063d14c5d2SYehuda Sadeh .invalidate_authorizer = invalidate_authorizer, 30073d14c5d2SYehuda Sadeh .alloc_msg = alloc_msg, 300833d07337SYan, Zheng .sign_message = sign_message, 300933d07337SYan, Zheng .check_message_signature = check_message_signature, 30103d14c5d2SYehuda Sadeh .fault = osd_reset, 30113d14c5d2SYehuda Sadeh }; 3012