1 // SPDX-License-Identifier: GPL-2.0-only
2 /* io_uring tests for vsock
4 * Copyright (C) 2023 SberDevices.
6 * Author: Arseniy Krasnov <avkrasnov@salutedevices.com>
16 #include <linux/kernel.h>
21 #include "msg_zerocopy_common.h"
24 #define PAGE_SIZE 4096
27 #define RING_ENTRIES_NUM 4
29 #define VSOCK_TEST_DATA_MAX_IOV 3
31 struct vsock_io_uring_test {
32 /* Number of valid elements in 'vecs'. */
34 struct iovec vecs[VSOCK_TEST_DATA_MAX_IOV];
37 static struct vsock_io_uring_test test_data_array[] = {
38 /* All elements have page aligned base and size. */
43 { NULL, 2 * PAGE_SIZE },
44 { NULL, 3 * PAGE_SIZE },
47 /* Middle element has both non-page aligned base and size. */
53 { NULL, 3 * PAGE_SIZE },
58 static void vsock_io_uring_client(const struct test_opts *opts,
59 const struct vsock_io_uring_test *test_data,
62 struct io_uring_sqe *sqe;
63 struct io_uring_cqe *cqe;
69 fd = vsock_stream_connect(opts->peer_cid, 1234);
76 enable_so_zerocopy(fd);
78 iovec = alloc_test_iovec(test_data->vecs, test_data->vecs_cnt);
80 if (io_uring_queue_init(RING_ENTRIES_NUM, &ring, 0))
81 error(1, errno, "io_uring_queue_init");
83 if (io_uring_register_buffers(&ring, iovec, test_data->vecs_cnt))
84 error(1, errno, "io_uring_register_buffers");
86 memset(&msg, 0, sizeof(msg));
88 msg.msg_iovlen = test_data->vecs_cnt;
89 sqe = io_uring_get_sqe(&ring);
92 io_uring_prep_sendmsg_zc(sqe, fd, &msg, 0);
94 io_uring_prep_sendmsg(sqe, fd, &msg, 0);
96 if (io_uring_submit(&ring) != 1)
97 error(1, errno, "io_uring_submit");
99 if (io_uring_wait_cqe(&ring, &cqe))
100 error(1, errno, "io_uring_wait_cqe");
102 io_uring_cqe_seen(&ring, cqe);
104 control_writeulong(iovec_hash_djb2(iovec, test_data->vecs_cnt));
106 control_writeln("DONE");
107 io_uring_queue_exit(&ring);
108 free_test_iovec(test_data->vecs, iovec, test_data->vecs_cnt);
112 static void vsock_io_uring_server(const struct test_opts *opts,
113 const struct vsock_io_uring_test *test_data)
115 unsigned long remote_hash;
116 unsigned long local_hash;
117 struct io_uring ring;
123 fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL);
129 data_len = iovec_bytes(test_data->vecs, test_data->vecs_cnt);
131 data = malloc(data_len);
137 if (io_uring_queue_init(RING_ENTRIES_NUM, &ring, 0))
138 error(1, errno, "io_uring_queue_init");
142 while (recv_len < data_len) {
143 struct io_uring_sqe *sqe;
144 struct io_uring_cqe *cqe;
147 sqe = io_uring_get_sqe(&ring);
148 iovec.iov_base = data + recv_len;
149 iovec.iov_len = data_len;
151 io_uring_prep_readv(sqe, fd, &iovec, 1, 0);
153 if (io_uring_submit(&ring) != 1)
154 error(1, errno, "io_uring_submit");
156 if (io_uring_wait_cqe(&ring, &cqe))
157 error(1, errno, "io_uring_wait_cqe");
159 recv_len += cqe->res;
160 io_uring_cqe_seen(&ring, cqe);
163 if (recv_len != data_len) {
164 fprintf(stderr, "expected %zu, got %zu\n", data_len,
169 local_hash = hash_djb2(data, data_len);
171 remote_hash = control_readulong();
172 if (remote_hash != local_hash) {
173 fprintf(stderr, "hash mismatch\n");
177 control_expectln("DONE");
178 io_uring_queue_exit(&ring);
182 void test_stream_uring_server(const struct test_opts *opts)
186 for (i = 0; i < ARRAY_SIZE(test_data_array); i++)
187 vsock_io_uring_server(opts, &test_data_array[i]);
190 void test_stream_uring_client(const struct test_opts *opts)
194 for (i = 0; i < ARRAY_SIZE(test_data_array); i++)
195 vsock_io_uring_client(opts, &test_data_array[i], false);
198 void test_stream_uring_msg_zc_server(const struct test_opts *opts)
202 for (i = 0; i < ARRAY_SIZE(test_data_array); i++)
203 vsock_io_uring_server(opts, &test_data_array[i]);
206 void test_stream_uring_msg_zc_client(const struct test_opts *opts)
210 for (i = 0; i < ARRAY_SIZE(test_data_array); i++)
211 vsock_io_uring_client(opts, &test_data_array[i], true);
214 static struct test_case test_cases[] = {
216 .name = "SOCK_STREAM io_uring test",
217 .run_server = test_stream_uring_server,
218 .run_client = test_stream_uring_client,
221 .name = "SOCK_STREAM io_uring MSG_ZEROCOPY test",
222 .run_server = test_stream_uring_msg_zc_server,
223 .run_client = test_stream_uring_msg_zc_client,
228 static const char optstring[] = "";
229 static const struct option longopts[] = {
231 .name = "control-host",
232 .has_arg = required_argument,
236 .name = "control-port",
237 .has_arg = required_argument,
242 .has_arg = required_argument,
247 .has_arg = required_argument,
252 .has_arg = no_argument,
258 static void usage(void)
260 fprintf(stderr, "Usage: vsock_uring_test [--help] [--control-host=<host>] --control-port=<port> --mode=client|server --peer-cid=<cid>\n"
262 " Server: vsock_uring_test --control-port=1234 --mode=server --peer-cid=3\n"
263 " Client: vsock_uring_test --control-host=192.168.0.1 --control-port=1234 --mode=client --peer-cid=2\n"
265 "Run transmission tests using io_uring. Usage is the same as\n"
269 " --help This help message\n"
270 " --control-host <host> Server IP address to connect to\n"
271 " --control-port <port> Server port to listen on/connect to\n"
272 " --mode client|server Server or client mode\n"
273 " --peer-cid <cid> CID of the other side\n"
278 int main(int argc, char **argv)
280 const char *control_host = NULL;
281 const char *control_port = NULL;
282 struct test_opts opts = {
283 .mode = TEST_MODE_UNSET,
284 .peer_cid = VMADDR_CID_ANY,
290 int opt = getopt_long(argc, argv, optstring, longopts, NULL);
297 control_host = optarg;
300 if (strcmp(optarg, "client") == 0) {
301 opts.mode = TEST_MODE_CLIENT;
302 } else if (strcmp(optarg, "server") == 0) {
303 opts.mode = TEST_MODE_SERVER;
305 fprintf(stderr, "--mode must be \"client\" or \"server\"\n");
310 opts.peer_cid = parse_cid(optarg);
313 control_port = optarg;
323 if (opts.mode == TEST_MODE_UNSET)
325 if (opts.peer_cid == VMADDR_CID_ANY)
329 if (opts.mode != TEST_MODE_SERVER)
331 control_host = "0.0.0.0";
334 control_init(control_host, control_port,
335 opts.mode == TEST_MODE_SERVER);
337 run_tests(test_cases, &opts);