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