Line data Source code
1 : /* SPDX-License-Identifier: BSD-3-Clause
2 : * Copyright (C) 2018 Intel Corporation.
3 : * All rights reserved.
4 : */
5 :
6 : #include "spdk/rpc.h"
7 : #include "spdk/util.h"
8 : #include "spdk/string.h"
9 :
10 : #include "vbdev_split.h"
11 : #include "spdk/log.h"
12 :
13 : struct rpc_construct_split {
14 : char *base_bdev;
15 : uint32_t split_count;
16 : uint64_t split_size_mb;
17 : };
18 :
19 : static const struct spdk_json_object_decoder rpc_construct_split_decoders[] = {
20 : {"base_bdev", offsetof(struct rpc_construct_split, base_bdev), spdk_json_decode_string},
21 : {"split_count", offsetof(struct rpc_construct_split, split_count), spdk_json_decode_uint32},
22 : {"split_size_mb", offsetof(struct rpc_construct_split, split_size_mb), spdk_json_decode_uint64, true},
23 : };
24 :
25 : static void
26 0 : dummy_bdev_event_cb(enum spdk_bdev_event_type type, struct spdk_bdev *bdev, void *ctx)
27 : {
28 0 : }
29 :
30 : static void
31 0 : rpc_bdev_split_create(struct spdk_jsonrpc_request *request,
32 : const struct spdk_json_val *params)
33 : {
34 0 : struct rpc_construct_split req = {};
35 : struct spdk_json_write_ctx *w;
36 0 : struct spdk_bdev_desc *base_desc;
37 : struct spdk_bdev *base_bdev;
38 : int rc;
39 :
40 0 : if (spdk_json_decode_object(params, rpc_construct_split_decoders,
41 : SPDK_COUNTOF(rpc_construct_split_decoders),
42 : &req)) {
43 0 : SPDK_ERRLOG("spdk_json_decode_object failed\n");
44 0 : spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS, "Invalid parameters");
45 0 : goto out;
46 : }
47 :
48 0 : rc = create_vbdev_split(req.base_bdev, req.split_count, req.split_size_mb);
49 0 : if (rc < 0) {
50 0 : spdk_jsonrpc_send_error_response_fmt(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS,
51 : "Failed to create %"PRIu32" split bdevs from '%s': %s",
52 : req.split_count, req.base_bdev, spdk_strerror(-rc));
53 0 : goto out;
54 : }
55 :
56 0 : w = spdk_jsonrpc_begin_result(request);
57 0 : spdk_json_write_array_begin(w);
58 :
59 0 : rc = spdk_bdev_open_ext(req.base_bdev, false, dummy_bdev_event_cb, NULL, &base_desc);
60 0 : if (rc == 0) {
61 : struct spdk_bdev_part_base *split_base;
62 : struct bdev_part_tailq *split_base_tailq;
63 : struct spdk_bdev_part *split_part;
64 : struct spdk_bdev *split_bdev;
65 :
66 0 : base_bdev = spdk_bdev_desc_get_bdev(base_desc);
67 :
68 0 : split_base = vbdev_split_get_part_base(base_bdev);
69 :
70 0 : assert(split_base != NULL);
71 :
72 0 : split_base_tailq = spdk_bdev_part_base_get_tailq(split_base);
73 0 : TAILQ_FOREACH(split_part, split_base_tailq, tailq) {
74 0 : split_bdev = spdk_bdev_part_get_bdev(split_part);
75 0 : spdk_json_write_string(w, spdk_bdev_get_name(split_bdev));
76 : }
77 :
78 0 : spdk_bdev_close(base_desc);
79 : }
80 :
81 0 : spdk_json_write_array_end(w);
82 0 : spdk_jsonrpc_end_result(request, w);
83 :
84 0 : out:
85 0 : free(req.base_bdev);
86 0 : }
87 0 : SPDK_RPC_REGISTER("bdev_split_create", rpc_bdev_split_create, SPDK_RPC_RUNTIME)
88 :
89 : struct rpc_delete_split {
90 : char *base_bdev;
91 : };
92 :
93 : static const struct spdk_json_object_decoder rpc_delete_split_decoders[] = {
94 : {"base_bdev", offsetof(struct rpc_delete_split, base_bdev), spdk_json_decode_string},
95 : };
96 :
97 : static void
98 0 : rpc_bdev_split_delete(struct spdk_jsonrpc_request *request,
99 : const struct spdk_json_val *params)
100 : {
101 0 : struct rpc_delete_split req = {};
102 : int rc;
103 :
104 0 : if (spdk_json_decode_object(params, rpc_delete_split_decoders,
105 : SPDK_COUNTOF(rpc_delete_split_decoders),
106 : &req)) {
107 0 : SPDK_ERRLOG("spdk_json_decode_object failed\n");
108 0 : spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS, "Invalid parameters");
109 0 : goto out;
110 : }
111 :
112 0 : rc = vbdev_split_destruct(req.base_bdev);
113 0 : if (rc < 0) {
114 0 : spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INVALID_PARAMS, spdk_strerror(-rc));
115 0 : goto out;
116 : }
117 :
118 0 : spdk_jsonrpc_send_bool_response(request, true);
119 0 : out:
120 0 : free(req.base_bdev);
121 0 : }
122 0 : SPDK_RPC_REGISTER("bdev_split_delete", rpc_bdev_split_delete, SPDK_RPC_RUNTIME)
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