1 /*- 2 * BSD LICENSE 3 * 4 * Copyright (c) Intel Corporation. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include "spdk/stdinc.h" 35 36 #include "bdev_nvme.h" 37 38 #include "spdk/string.h" 39 #include "spdk/rpc.h" 40 #include "spdk/util.h" 41 #include "spdk/nvme.h" 42 43 #include "spdk_internal/log.h" 44 45 struct rpc_nvme_cuse_register { 46 char *name; 47 }; 48 49 static void 50 free_rpc_nvme_cuse_register(struct rpc_nvme_cuse_register *req) 51 { 52 free(req->name); 53 } 54 55 static const struct spdk_json_object_decoder rpc_nvme_cuse_register_decoders[] = { 56 {"name", offsetof(struct rpc_nvme_cuse_register, name), spdk_json_decode_string}, 57 }; 58 59 static void 60 spdk_rpc_nvme_cuse_register(struct spdk_jsonrpc_request *request, 61 const struct spdk_json_val *params) 62 { 63 struct rpc_nvme_cuse_register req = {}; 64 struct spdk_json_write_ctx *w; 65 struct nvme_bdev_ctrlr *bdev_ctrlr = NULL; 66 int rc; 67 68 if (spdk_json_decode_object(params, rpc_nvme_cuse_register_decoders, 69 SPDK_COUNTOF(rpc_nvme_cuse_register_decoders), 70 &req)) { 71 SPDK_ERRLOG("spdk_json_decode_object failed\n"); 72 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, 73 "spdk_json_decode_object failed"); 74 goto cleanup; 75 } 76 77 bdev_ctrlr = nvme_bdev_ctrlr_get_by_name(req.name); 78 if (!bdev_ctrlr) { 79 SPDK_ERRLOG("No such controller\n"); 80 spdk_jsonrpc_send_error_response(request, -ENODEV, spdk_strerror(ENODEV)); 81 goto cleanup; 82 } 83 84 rc = spdk_nvme_cuse_register(bdev_ctrlr->ctrlr); 85 if (rc) { 86 SPDK_ERRLOG("Failed to register CUSE devices: %s\n", spdk_strerror(-rc)); 87 spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc)); 88 goto cleanup; 89 } 90 91 w = spdk_jsonrpc_begin_result(request); 92 spdk_json_write_bool(w, true); 93 spdk_jsonrpc_end_result(request, w); 94 95 cleanup: 96 free_rpc_nvme_cuse_register(&req); 97 } 98 SPDK_RPC_REGISTER("bdev_nvme_cuse_register", spdk_rpc_nvme_cuse_register, SPDK_RPC_RUNTIME) 99 100 struct rpc_nvme_cuse_unregister { 101 char *name; 102 }; 103 104 static void 105 free_rpc_nvme_cuse_unregister(struct rpc_nvme_cuse_unregister *req) 106 { 107 free(req->name); 108 } 109 110 static const struct spdk_json_object_decoder rpc_nvme_cuse_unregister_decoders[] = { 111 {"name", offsetof(struct rpc_nvme_cuse_unregister, name), spdk_json_decode_string, true}, 112 }; 113 114 static void 115 spdk_rpc_nvme_cuse_unregister(struct spdk_jsonrpc_request *request, 116 const struct spdk_json_val *params) 117 { 118 struct rpc_nvme_cuse_unregister req = {}; 119 struct spdk_json_write_ctx *w; 120 struct nvme_bdev_ctrlr *bdev_ctrlr = NULL; 121 int rc; 122 123 if (spdk_json_decode_object(params, rpc_nvme_cuse_unregister_decoders, 124 SPDK_COUNTOF(rpc_nvme_cuse_unregister_decoders), 125 &req)) { 126 SPDK_ERRLOG("spdk_json_decode_object failed\n"); 127 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, 128 "spdk_json_decode_object failed"); 129 goto cleanup; 130 } 131 132 bdev_ctrlr = nvme_bdev_ctrlr_get_by_name(req.name); 133 if (!bdev_ctrlr) { 134 SPDK_ERRLOG("No such controller\n"); 135 spdk_jsonrpc_send_error_response(request, -ENODEV, spdk_strerror(ENODEV)); 136 goto cleanup; 137 } 138 139 rc = spdk_nvme_cuse_unregister(bdev_ctrlr->ctrlr); 140 if (rc) { 141 spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc)); 142 goto cleanup; 143 } 144 145 w = spdk_jsonrpc_begin_result(request); 146 spdk_json_write_bool(w, true); 147 spdk_jsonrpc_end_result(request, w); 148 149 cleanup: 150 free_rpc_nvme_cuse_unregister(&req); 151 } 152 SPDK_RPC_REGISTER("bdev_nvme_cuse_unregister", spdk_rpc_nvme_cuse_unregister, SPDK_RPC_RUNTIME) 153