1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright (C) 2020 Intel Corporation. 3 * All rights reserved. 4 */ 5 6 #include "vbdev_passthru.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_bdev_passthru_create { 14 char *base_bdev_name; 15 char *name; 16 }; 17 18 /* Free the allocated memory resource after the RPC handling. */ 19 static void 20 free_rpc_bdev_passthru_create(struct rpc_bdev_passthru_create *r) 21 { 22 free(r->base_bdev_name); 23 free(r->name); 24 } 25 26 /* Structure to decode the input parameters for this RPC method. */ 27 static const struct spdk_json_object_decoder rpc_bdev_passthru_create_decoders[] = { 28 {"base_bdev_name", offsetof(struct rpc_bdev_passthru_create, base_bdev_name), spdk_json_decode_string}, 29 {"name", offsetof(struct rpc_bdev_passthru_create, name), spdk_json_decode_string}, 30 }; 31 32 /* Decode the parameters for this RPC method and properly construct the passthru 33 * device. Error status returned in the failed cases. 34 */ 35 static void 36 rpc_bdev_passthru_create(struct spdk_jsonrpc_request *request, 37 const struct spdk_json_val *params) 38 { 39 struct rpc_bdev_passthru_create req = {NULL}; 40 struct spdk_json_write_ctx *w; 41 int rc; 42 43 if (spdk_json_decode_object(params, rpc_bdev_passthru_create_decoders, 44 SPDK_COUNTOF(rpc_bdev_passthru_create_decoders), 45 &req)) { 46 SPDK_DEBUGLOG(vbdev_passthru, "spdk_json_decode_object failed\n"); 47 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, 48 "spdk_json_decode_object failed"); 49 goto cleanup; 50 } 51 52 rc = bdev_passthru_external_create_disk(req.base_bdev_name, req.name); 53 if (rc != 0) { 54 spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc)); 55 goto cleanup; 56 } 57 58 w = spdk_jsonrpc_begin_result(request); 59 spdk_json_write_string(w, req.name); 60 spdk_jsonrpc_end_result(request, w); 61 62 cleanup: 63 free_rpc_bdev_passthru_create(&req); 64 } 65 SPDK_RPC_REGISTER("construct_ext_passthru_bdev", rpc_bdev_passthru_create, SPDK_RPC_RUNTIME) 66 67 struct rpc_bdev_passthru_delete { 68 char *name; 69 }; 70 71 static void 72 free_rpc_bdev_passthru_delete(struct rpc_bdev_passthru_delete *req) 73 { 74 free(req->name); 75 } 76 77 static const struct spdk_json_object_decoder rpc_bdev_passthru_delete_decoders[] = { 78 {"name", offsetof(struct rpc_bdev_passthru_delete, name), spdk_json_decode_string}, 79 }; 80 81 static void 82 rpc_bdev_passthru_delete_cb(void *cb_arg, int bdeverrno) 83 { 84 struct spdk_jsonrpc_request *request = cb_arg; 85 86 spdk_jsonrpc_send_bool_response(request, bdeverrno == 0); 87 } 88 89 static void 90 rpc_bdev_passthru_delete(struct spdk_jsonrpc_request *request, 91 const struct spdk_json_val *params) 92 { 93 struct rpc_bdev_passthru_delete req = {NULL}; 94 struct spdk_bdev *bdev; 95 96 if (spdk_json_decode_object(params, rpc_bdev_passthru_delete_decoders, 97 SPDK_COUNTOF(rpc_bdev_passthru_delete_decoders), 98 &req)) { 99 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, 100 "spdk_json_decode_object failed"); 101 goto cleanup; 102 } 103 104 bdev = spdk_bdev_get_by_name(req.name); 105 if (bdev == NULL) { 106 spdk_jsonrpc_send_error_response(request, -ENODEV, spdk_strerror(ENODEV)); 107 goto cleanup; 108 } 109 110 bdev_passthru_external_delete_disk(bdev, rpc_bdev_passthru_delete_cb, request); 111 112 cleanup: 113 free_rpc_bdev_passthru_delete(&req); 114 } 115 SPDK_RPC_REGISTER("delete_ext_passthru_bdev", rpc_bdev_passthru_delete, SPDK_RPC_RUNTIME) 116