1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright (C) 2018 Intel Corporation.
3 * Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
4 * All rights reserved.
5 */
6
7 #include "vbdev_passthru.h"
8 #include "spdk/rpc.h"
9 #include "spdk/util.h"
10 #include "spdk/string.h"
11 #include "spdk/log.h"
12
13 /* Structure to hold the parameters for this RPC method. */
14 struct rpc_bdev_passthru_create {
15 char *base_bdev_name;
16 char *name;
17 struct spdk_uuid uuid;
18 };
19
20 /* Free the allocated memory resource after the RPC handling. */
21 static void
free_rpc_bdev_passthru_create(struct rpc_bdev_passthru_create * r)22 free_rpc_bdev_passthru_create(struct rpc_bdev_passthru_create *r)
23 {
24 free(r->base_bdev_name);
25 free(r->name);
26 }
27
28 /* Structure to decode the input parameters for this RPC method. */
29 static const struct spdk_json_object_decoder rpc_bdev_passthru_create_decoders[] = {
30 {"base_bdev_name", offsetof(struct rpc_bdev_passthru_create, base_bdev_name), spdk_json_decode_string},
31 {"name", offsetof(struct rpc_bdev_passthru_create, name), spdk_json_decode_string},
32 {"uuid", offsetof(struct rpc_bdev_passthru_create, uuid), spdk_json_decode_uuid, true},
33 };
34
35 /* Decode the parameters for this RPC method and properly construct the passthru
36 * device. Error status returned in the failed cases.
37 */
38 static void
rpc_bdev_passthru_create(struct spdk_jsonrpc_request * request,const struct spdk_json_val * params)39 rpc_bdev_passthru_create(struct spdk_jsonrpc_request *request,
40 const struct spdk_json_val *params)
41 {
42 struct rpc_bdev_passthru_create req = {NULL};
43 struct spdk_json_write_ctx *w;
44 int rc;
45
46 if (spdk_json_decode_object(params, rpc_bdev_passthru_create_decoders,
47 SPDK_COUNTOF(rpc_bdev_passthru_create_decoders),
48 &req)) {
49 SPDK_DEBUGLOG(vbdev_passthru, "spdk_json_decode_object failed\n");
50 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
51 "spdk_json_decode_object failed");
52 goto cleanup;
53 }
54
55 rc = bdev_passthru_create_disk(req.base_bdev_name, req.name, &req.uuid);
56 if (rc != 0) {
57 spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
58 goto cleanup;
59 }
60
61 w = spdk_jsonrpc_begin_result(request);
62 spdk_json_write_string(w, req.name);
63 spdk_jsonrpc_end_result(request, w);
64
65 cleanup:
66 free_rpc_bdev_passthru_create(&req);
67 }
68 SPDK_RPC_REGISTER("bdev_passthru_create", rpc_bdev_passthru_create, SPDK_RPC_RUNTIME)
69
70 struct rpc_bdev_passthru_delete {
71 char *name;
72 };
73
74 static void
free_rpc_bdev_passthru_delete(struct rpc_bdev_passthru_delete * req)75 free_rpc_bdev_passthru_delete(struct rpc_bdev_passthru_delete *req)
76 {
77 free(req->name);
78 }
79
80 static const struct spdk_json_object_decoder rpc_bdev_passthru_delete_decoders[] = {
81 {"name", offsetof(struct rpc_bdev_passthru_delete, name), spdk_json_decode_string},
82 };
83
84 static void
rpc_bdev_passthru_delete_cb(void * cb_arg,int bdeverrno)85 rpc_bdev_passthru_delete_cb(void *cb_arg, int bdeverrno)
86 {
87 struct spdk_jsonrpc_request *request = cb_arg;
88
89 if (bdeverrno == 0) {
90 spdk_jsonrpc_send_bool_response(request, true);
91 } else {
92 spdk_jsonrpc_send_error_response(request, bdeverrno, spdk_strerror(-bdeverrno));
93 }
94 }
95
96 static void
rpc_bdev_passthru_delete(struct spdk_jsonrpc_request * request,const struct spdk_json_val * params)97 rpc_bdev_passthru_delete(struct spdk_jsonrpc_request *request,
98 const struct spdk_json_val *params)
99 {
100 struct rpc_bdev_passthru_delete req = {NULL};
101
102 if (spdk_json_decode_object(params, rpc_bdev_passthru_delete_decoders,
103 SPDK_COUNTOF(rpc_bdev_passthru_delete_decoders),
104 &req)) {
105 spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
106 "spdk_json_decode_object failed");
107 goto cleanup;
108 }
109
110 bdev_passthru_delete_disk(req.name, rpc_bdev_passthru_delete_cb, request);
111
112 cleanup:
113 free_rpc_bdev_passthru_delete(&req);
114 }
115 SPDK_RPC_REGISTER("bdev_passthru_delete", rpc_bdev_passthru_delete, SPDK_RPC_RUNTIME)
116