Line data Source code
1 : /* SPDX-License-Identifier: BSD-3-Clause
2 : * Copyright (C) 2022 Intel Corporation.
3 : * All rights reserved.
4 : */
5 :
6 : #include "spdk/string.h"
7 : #include "spdk/env.h"
8 : #include "spdk/rpc.h"
9 : #include "spdk/util.h"
10 : #include "spdk/log.h"
11 :
12 : #include "ublk_internal.h"
13 :
14 : struct rpc_ublk_create_target {
15 : char *cpumask;
16 : };
17 :
18 : static const struct spdk_json_object_decoder rpc_ublk_create_target_decoders[] = {
19 : {"cpumask", offsetof(struct rpc_ublk_create_target, cpumask), spdk_json_decode_string, true},
20 : };
21 :
22 : static void
23 0 : free_rpc_ublk_create_target(struct rpc_ublk_create_target *req)
24 : {
25 0 : free(req->cpumask);
26 0 : }
27 :
28 : static void
29 0 : rpc_ublk_create_target(struct spdk_jsonrpc_request *request, const struct spdk_json_val *params)
30 : {
31 0 : int rc = 0;
32 0 : struct rpc_ublk_create_target req = {};
33 :
34 0 : if (params != NULL) {
35 0 : if (spdk_json_decode_object_relaxed(params, rpc_ublk_create_target_decoders,
36 : SPDK_COUNTOF(rpc_ublk_create_target_decoders),
37 : &req)) {
38 0 : SPDK_ERRLOG("spdk_json_decode_object failed\n");
39 0 : rc = -EINVAL;
40 0 : goto invalid;
41 : }
42 : }
43 0 : rc = ublk_create_target(req.cpumask, params);
44 0 : if (rc != 0) {
45 0 : goto invalid;
46 : }
47 0 : spdk_jsonrpc_send_bool_response(request, true);
48 0 : free_rpc_ublk_create_target(&req);
49 0 : return;
50 0 : invalid:
51 0 : SPDK_ERRLOG("Can't create ublk target: %s\n", spdk_strerror(-rc));
52 0 : spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, spdk_strerror(-rc));
53 0 : free_rpc_ublk_create_target(&req);
54 : }
55 0 : SPDK_RPC_REGISTER("ublk_create_target", rpc_ublk_create_target, SPDK_RPC_RUNTIME)
56 :
57 : static void
58 0 : ublk_destroy_target_done(void *arg)
59 : {
60 0 : struct spdk_jsonrpc_request *req = arg;
61 :
62 0 : spdk_jsonrpc_send_bool_response(req, true);
63 0 : SPDK_NOTICELOG("ublk target has been destroyed\n");
64 0 : }
65 :
66 : static void
67 0 : rpc_ublk_destroy_target(struct spdk_jsonrpc_request *request, const struct spdk_json_val *params)
68 : {
69 0 : int rc = 0;
70 :
71 0 : rc = ublk_destroy_target(ublk_destroy_target_done, request);
72 0 : if (rc != 0) {
73 0 : spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, spdk_strerror(-rc));
74 0 : SPDK_ERRLOG("Can't destroy ublk target: %s\n", spdk_strerror(-rc));
75 : }
76 0 : }
77 0 : SPDK_RPC_REGISTER("ublk_destroy_target", rpc_ublk_destroy_target, SPDK_RPC_RUNTIME)
78 :
79 : struct rpc_ublk_start_disk {
80 : char *bdev_name;
81 : uint32_t ublk_id;
82 : uint32_t num_queues;
83 : uint32_t queue_depth;
84 : struct spdk_jsonrpc_request *request;
85 : };
86 :
87 : static const struct spdk_json_object_decoder rpc_ublk_start_disk_decoders[] = {
88 : {"bdev_name", offsetof(struct rpc_ublk_start_disk, bdev_name), spdk_json_decode_string},
89 : {"ublk_id", offsetof(struct rpc_ublk_start_disk, ublk_id), spdk_json_decode_uint32},
90 : {"num_queues", offsetof(struct rpc_ublk_start_disk, num_queues), spdk_json_decode_uint32, true},
91 : {"queue_depth", offsetof(struct rpc_ublk_start_disk, queue_depth), spdk_json_decode_uint32, true},
92 : };
93 :
94 : static void
95 0 : free_rpc_ublk_start_disk(struct rpc_ublk_start_disk *req)
96 : {
97 0 : free(req->bdev_name);
98 0 : free(req);
99 0 : }
100 :
101 : static void
102 0 : rpc_ublk_start_disk_done(void *cb_arg, int rc)
103 : {
104 0 : struct rpc_ublk_start_disk *req = cb_arg;
105 : struct spdk_json_write_ctx *w;
106 :
107 0 : if (rc == 0) {
108 0 : w = spdk_jsonrpc_begin_result(req->request);
109 0 : spdk_json_write_uint32(w, req->ublk_id);
110 0 : spdk_jsonrpc_end_result(req->request, w);
111 : } else {
112 0 : spdk_jsonrpc_send_error_response(req->request, rc, spdk_strerror(-rc));
113 : }
114 :
115 0 : free_rpc_ublk_start_disk(req);
116 0 : }
117 :
118 : static void
119 0 : rpc_ublk_start_disk(struct spdk_jsonrpc_request *request,
120 : const struct spdk_json_val *params)
121 : {
122 : struct rpc_ublk_start_disk *req;
123 : int rc;
124 :
125 0 : req = calloc(1, sizeof(*req));
126 0 : if (req == NULL) {
127 0 : SPDK_ERRLOG("could not allocate request.\n");
128 0 : spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, "Out of memory");
129 0 : return;
130 : }
131 0 : req->request = request;
132 0 : req->queue_depth = UBLK_DEV_QUEUE_DEPTH;
133 0 : req->num_queues = UBLK_DEV_NUM_QUEUE;
134 :
135 0 : if (spdk_json_decode_object(params, rpc_ublk_start_disk_decoders,
136 : SPDK_COUNTOF(rpc_ublk_start_disk_decoders),
137 : req)) {
138 0 : SPDK_ERRLOG("spdk_json_decode_object failed\n");
139 0 : spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
140 : "spdk_json_decode_object failed");
141 0 : goto out;
142 : }
143 :
144 0 : rc = ublk_start_disk(req->bdev_name, req->ublk_id, req->num_queues, req->queue_depth,
145 : rpc_ublk_start_disk_done, req);
146 0 : if (rc != 0) {
147 0 : rpc_ublk_start_disk_done(req, rc);
148 : }
149 :
150 0 : return;
151 :
152 0 : out:
153 0 : free_rpc_ublk_start_disk(req);
154 : }
155 :
156 0 : SPDK_RPC_REGISTER("ublk_start_disk", rpc_ublk_start_disk, SPDK_RPC_RUNTIME)
157 :
158 : struct rpc_ublk_stop_disk {
159 : uint32_t ublk_id;
160 : struct spdk_jsonrpc_request *request;
161 : };
162 :
163 : static void
164 0 : free_rpc_ublk_stop_disk(struct rpc_ublk_stop_disk *req)
165 : {
166 0 : free(req);
167 0 : }
168 :
169 : static const struct spdk_json_object_decoder rpc_ublk_stop_disk_decoders[] = {
170 : {"ublk_id", offsetof(struct rpc_ublk_stop_disk, ublk_id), spdk_json_decode_uint32},
171 : };
172 :
173 : static void
174 0 : rpc_ublk_stop_disk_done(void *cb_arg, int rc)
175 : {
176 0 : struct rpc_ublk_stop_disk *req = cb_arg;
177 :
178 0 : spdk_jsonrpc_send_bool_response(req->request, true);
179 0 : free_rpc_ublk_stop_disk(req);
180 0 : }
181 :
182 : static void
183 0 : rpc_ublk_stop_disk(struct spdk_jsonrpc_request *request,
184 : const struct spdk_json_val *params)
185 : {
186 : struct rpc_ublk_stop_disk *req;
187 : int rc;
188 :
189 0 : req = calloc(1, sizeof(*req));
190 0 : if (req == NULL) {
191 0 : SPDK_ERRLOG("could not allocate request.\n");
192 0 : spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, "Out of memory");
193 0 : return;
194 : }
195 0 : req->request = request;
196 :
197 0 : if (spdk_json_decode_object(params, rpc_ublk_stop_disk_decoders,
198 : SPDK_COUNTOF(rpc_ublk_stop_disk_decoders),
199 : req)) {
200 0 : SPDK_ERRLOG("spdk_json_decode_object failed\n");
201 0 : spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
202 : "spdk_json_decode_object failed");
203 0 : goto invalid;
204 : }
205 :
206 0 : rc = ublk_stop_disk(req->ublk_id, rpc_ublk_stop_disk_done, req);
207 0 : if (rc) {
208 0 : spdk_jsonrpc_send_error_response(request, rc, spdk_strerror(-rc));
209 0 : goto invalid;
210 : }
211 0 : return;
212 :
213 0 : invalid:
214 0 : free_rpc_ublk_stop_disk(req);
215 : }
216 :
217 0 : SPDK_RPC_REGISTER("ublk_stop_disk", rpc_ublk_stop_disk, SPDK_RPC_RUNTIME)
218 :
219 : static void
220 0 : rpc_dump_ublk_info(struct spdk_json_write_ctx *w,
221 : struct spdk_ublk_dev *ublk)
222 : {
223 : char ublk_path[32];
224 :
225 0 : snprintf(ublk_path, 32, "%s%u", "/dev/ublkb", ublk_dev_get_id(ublk));
226 0 : spdk_json_write_object_begin(w);
227 :
228 0 : spdk_json_write_named_string(w, "ublk_device", ublk_path);
229 0 : spdk_json_write_named_uint32(w, "id", ublk_dev_get_id(ublk));
230 0 : spdk_json_write_named_uint32(w, "queue_depth", ublk_dev_get_queue_depth(ublk));
231 0 : spdk_json_write_named_uint32(w, "num_queues", ublk_dev_get_num_queues(ublk));
232 0 : spdk_json_write_named_string(w, "bdev_name", ublk_dev_get_bdev_name(ublk));
233 :
234 0 : spdk_json_write_object_end(w);
235 0 : }
236 :
237 : struct rpc_ublk_get_disks {
238 : uint32_t ublk_id;
239 : };
240 :
241 : static const struct spdk_json_object_decoder rpc_ublk_get_disks_decoders[] = {
242 : {"ublk_id", offsetof(struct rpc_ublk_get_disks, ublk_id), spdk_json_decode_uint32, true},
243 : };
244 :
245 : static void
246 0 : rpc_ublk_get_disks(struct spdk_jsonrpc_request *request,
247 : const struct spdk_json_val *params)
248 : {
249 0 : struct rpc_ublk_get_disks req = {};
250 : struct spdk_json_write_ctx *w;
251 0 : struct spdk_ublk_dev *ublk = NULL;
252 :
253 0 : if (params != NULL) {
254 0 : if (spdk_json_decode_object(params, rpc_ublk_get_disks_decoders,
255 : SPDK_COUNTOF(rpc_ublk_get_disks_decoders),
256 : &req)) {
257 0 : SPDK_ERRLOG("spdk_json_decode_object failed\n");
258 0 : spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
259 : "spdk_json_decode_object failed");
260 0 : return;
261 : }
262 :
263 0 : if (req.ublk_id) {
264 0 : ublk = ublk_dev_find_by_id(req.ublk_id);
265 0 : if (ublk == NULL) {
266 0 : SPDK_ERRLOG("ublk device '%d' does not exist\n", req.ublk_id);
267 0 : spdk_jsonrpc_send_error_response(request, -ENODEV, spdk_strerror(ENODEV));
268 0 : return;
269 : }
270 : }
271 : }
272 :
273 0 : w = spdk_jsonrpc_begin_result(request);
274 0 : spdk_json_write_array_begin(w);
275 :
276 0 : if (ublk != NULL) {
277 0 : rpc_dump_ublk_info(w, ublk);
278 : } else {
279 0 : for (ublk = ublk_dev_first(); ublk != NULL; ublk = ublk_dev_next(ublk)) {
280 0 : rpc_dump_ublk_info(w, ublk);
281 : }
282 : }
283 :
284 0 : spdk_json_write_array_end(w);
285 0 : spdk_jsonrpc_end_result(request, w);
286 :
287 0 : return;
288 : }
289 0 : SPDK_RPC_REGISTER("ublk_get_disks", rpc_ublk_get_disks, SPDK_RPC_RUNTIME)
290 :
291 : struct rpc_ublk_recover_disk {
292 : char *bdev_name;
293 : uint32_t ublk_id;
294 : struct spdk_jsonrpc_request *request;
295 : };
296 :
297 : static const struct spdk_json_object_decoder rpc_ublk_recover_disk_decoders[] = {
298 : {"bdev_name", offsetof(struct rpc_ublk_recover_disk, bdev_name), spdk_json_decode_string},
299 : {"ublk_id", offsetof(struct rpc_ublk_recover_disk, ublk_id), spdk_json_decode_uint32},
300 : };
301 :
302 : static void
303 0 : free_rpc_ublk_recover_disk(struct rpc_ublk_recover_disk *req)
304 : {
305 0 : free(req->bdev_name);
306 0 : free(req);
307 0 : }
308 :
309 : static void
310 0 : rpc_ublk_recover_disk_done(void *cb_arg, int rc)
311 : {
312 0 : struct rpc_ublk_recover_disk *req = cb_arg;
313 : struct spdk_json_write_ctx *w;
314 :
315 0 : if (rc == 0) {
316 0 : w = spdk_jsonrpc_begin_result(req->request);
317 0 : spdk_json_write_uint32(w, req->ublk_id);
318 0 : spdk_jsonrpc_end_result(req->request, w);
319 : } else {
320 0 : spdk_jsonrpc_send_error_response(req->request, rc, spdk_strerror(-rc));
321 : }
322 :
323 0 : free_rpc_ublk_recover_disk(req);
324 0 : }
325 :
326 : static void
327 0 : rpc_ublk_recover_disk(struct spdk_jsonrpc_request *request,
328 : const struct spdk_json_val *params)
329 : {
330 : struct rpc_ublk_recover_disk *req;
331 : int rc;
332 :
333 0 : req = calloc(1, sizeof(*req));
334 0 : if (req == NULL) {
335 0 : SPDK_ERRLOG("could not allocate request.\n");
336 0 : spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR, "Out of memory");
337 0 : return;
338 : }
339 0 : req->request = request;
340 :
341 0 : if (spdk_json_decode_object(params, rpc_ublk_recover_disk_decoders,
342 : SPDK_COUNTOF(rpc_ublk_recover_disk_decoders),
343 : req)) {
344 0 : SPDK_ERRLOG("spdk_json_decode_object failed\n");
345 0 : spdk_jsonrpc_send_error_response(request, SPDK_JSONRPC_ERROR_INTERNAL_ERROR,
346 : "spdk_json_decode_object failed");
347 0 : free(req);
348 0 : return;
349 : }
350 :
351 0 : rc = ublk_start_disk_recovery(req->bdev_name, req->ublk_id, NULL, NULL);
352 0 : rpc_ublk_recover_disk_done(req, rc);
353 : }
354 :
355 0 : SPDK_RPC_REGISTER("ublk_recover_disk", rpc_ublk_recover_disk, SPDK_RPC_RUNTIME)
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