1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright (c) Samsung Electronics Co., Ltd. 3 * All rights reserved. 4 */ 5 6 #include "bdev_xnvme.h" 7 #include "spdk/rpc.h" 8 #include "spdk/util.h" 9 #include "spdk/string.h" 10 #include "spdk/log.h" 11 12 /* Structure to hold the parameters for this RPC method. */ 13 struct rpc_create_xnvme { 14 char *name; 15 char *filename; 16 char *io_mechanism; 17 bool conserve_cpu; 18 }; 19 20 /* Free the allocated memory resource after the RPC handling. */ 21 static void 22 free_rpc_create_xnvme(struct rpc_create_xnvme *r) 23 { 24 free(r->name); 25 free(r->filename); 26 free(r->io_mechanism); 27 } 28 29 /* Structure to decode the input parameters for this RPC method. */ 30 static const struct spdk_json_object_decoder rpc_create_xnvme_decoders[] = { 31 {"name", offsetof(struct rpc_create_xnvme, name), spdk_json_decode_string}, 32 {"filename", offsetof(struct rpc_create_xnvme, filename), spdk_json_decode_string}, 33 {"io_mechanism", offsetof(struct rpc_create_xnvme, io_mechanism), spdk_json_decode_string}, 34 {"conserve_cpu", offsetof(struct rpc_create_xnvme, conserve_cpu), spdk_json_decode_bool, true}, 35 }; 36 37 static void 38 dummy_bdev_event_cb(enum spdk_bdev_event_type type, struct spdk_bdev *bdev, void *ctx) 39 { 40 } 41 42 /* Decode the parameters for this RPC method and properly create the xnvme 43 * device. Error status returned in the failed cases. 44 */ 45 static void 46 rpc_bdev_xnvme_create(struct spdk_jsonrpc_request *request, 47 const struct spdk_json_val *params) 48 { 49 struct rpc_create_xnvme req = {}; 50 struct spdk_json_write_ctx *w; 51 struct spdk_bdev *bdev; 52 53 if (spdk_json_decode_object(params, rpc_create_xnvme_decoders, 54 SPDK_COUNTOF(rpc_create_xnvme_decoders), 55 &req)) { 56 SPDK_ERRLOG("spdk_json_decode_object failed\n"); 57 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, 58 "spdk_json_decode_object failed"); 59 goto cleanup; 60 } 61 62 bdev = create_xnvme_bdev(req.name, req.filename, req.io_mechanism, req.conserve_cpu); 63 if (!bdev) { 64 SPDK_ERRLOG("Unable to create xNVMe bdev from file %s\n", req.filename); 65 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, 66 "Unable to create xNVMe bdev."); 67 goto cleanup; 68 } 69 70 w = spdk_jsonrpc_begin_result(request); 71 spdk_json_write_string(w, req.name); 72 spdk_jsonrpc_end_result(request, w); 73 74 cleanup: 75 free_rpc_create_xnvme(&req); 76 } 77 SPDK_RPC_REGISTER("bdev_xnvme_create", rpc_bdev_xnvme_create, SPDK_RPC_RUNTIME) 78 79 struct rpc_delete_xnvme { 80 char *name; 81 }; 82 83 static void 84 free_rpc_delete_xnvme(struct rpc_delete_xnvme *req) 85 { 86 free(req->name); 87 } 88 89 static const struct spdk_json_object_decoder rpc_delete_xnvme_decoders[] = { 90 {"name", offsetof(struct rpc_delete_xnvme, name), spdk_json_decode_string}, 91 }; 92 93 static void 94 _rpc_bdev_xnvme_delete_cb(void *cb_arg, int bdeverrno) 95 { 96 struct spdk_jsonrpc_request *request = cb_arg; 97 98 spdk_jsonrpc_send_bool_response(request, bdeverrno == 0); 99 } 100 101 static void 102 rpc_bdev_xnvme_delete(struct spdk_jsonrpc_request *request, 103 const struct spdk_json_val *params) 104 { 105 struct rpc_delete_xnvme req = {NULL}; 106 struct spdk_bdev_desc *desc; 107 struct spdk_bdev *bdev = NULL; 108 int rc; 109 110 if (spdk_json_decode_object(params, rpc_delete_xnvme_decoders, 111 SPDK_COUNTOF(rpc_delete_xnvme_decoders), 112 &req)) { 113 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, 114 "spdk_json_decode_object failed"); 115 goto cleanup; 116 } 117 118 rc = spdk_bdev_open_ext(req.name, false, dummy_bdev_event_cb, NULL, &desc); 119 if (rc == 0) { 120 bdev = spdk_bdev_desc_get_bdev(desc); 121 spdk_bdev_close(desc); 122 } else { 123 spdk_jsonrpc_send_error_response(request, -ENODEV, spdk_strerror(ENODEV)); 124 goto cleanup; 125 } 126 127 if (bdev == NULL) { 128 spdk_jsonrpc_send_error_response(request, -ENODEV, spdk_strerror(ENODEV)); 129 goto cleanup; 130 } 131 132 delete_xnvme_bdev(bdev, _rpc_bdev_xnvme_delete_cb, request); 133 134 cleanup: 135 free_rpc_delete_xnvme(&req); 136 } 137 SPDK_RPC_REGISTER("bdev_xnvme_delete", rpc_bdev_xnvme_delete, SPDK_RPC_RUNTIME) 138