// SPDX-License-Identifier: GPL-2.0-only
/* io_uring tests for vsock
*
* Copyright (C) 2023 SberDevices.
*
* Author: Arseniy Krasnov <[email protected]>
*/
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <liburing.h>
#include <unistd.h>
#include <sys/mman.h>
#include <linux/kernel.h>
#include <error.h>
#include "util.h"
#include "control.h"
#include "msg_zerocopy_common.h"
#ifndef PAGE_SIZE
#define PAGE_SIZE 4096
#endif
#define RING_ENTRIES_NUM 4
#define VSOCK_TEST_DATA_MAX_IOV 3
struct vsock_io_uring_test {
/* Number of valid elements in 'vecs'. */
int vecs_cnt;
struct iovec vecs[VSOCK_TEST_DATA_MAX_IOV];
};
static struct vsock_io_uring_test test_data_array[] = {
/* All elements have page aligned base and size. */
{
.vecs_cnt = 3,
{
{ NULL, PAGE_SIZE },
{ NULL, 2 * PAGE_SIZE },
{ NULL, 3 * PAGE_SIZE },
}
},
/* Middle element has both non-page aligned base and size. */
{
.vecs_cnt = 3,
{
{ NULL, PAGE_SIZE },
{ (void *)1, 200 },
{ NULL, 3 * PAGE_SIZE },
}
}
};
static void vsock_io_uring_client(const struct test_opts *opts,
const struct vsock_io_uring_test *test_data,
bool msg_zerocopy)
{
struct io_uring_sqe *sqe;
struct io_uring_cqe *cqe;
struct io_uring ring;
struct iovec *iovec;
struct msghdr msg;
int fd;
fd = vsock_stream_connect(opts->peer_cid, opts->peer_port);
if (fd < 0) {
perror("connect");
exit(EXIT_FAILURE);
}
if (msg_zerocopy)
enable_so_zerocopy(fd);
iovec = alloc_test_iovec(test_data->vecs, test_data->vecs_cnt);
if (io_uring_queue_init(RING_ENTRIES_NUM, &ring, 0))
error(1, errno, "io_uring_queue_init");
if (io_uring_register_buffers(&ring, iovec, test_data->vecs_cnt))
error(1, errno, "io_uring_register_buffers");
memset(&msg, 0, sizeof(msg));
msg.msg_iov = iovec;
msg.msg_iovlen = test_data->vecs_cnt;
sqe = io_uring_get_sqe(&ring);
if (msg_zerocopy)
io_uring_prep_sendmsg_zc(sqe, fd, &msg, 0);
else
io_uring_prep_sendmsg(sqe, fd, &msg, 0);
if (io_uring_submit(&ring) != 1)
error(1, errno, "io_uring_submit");
if (io_uring_wait_cqe(&ring, &cqe))
error(1, errno, "io_uring_wait_cqe");
io_uring_cqe_seen(&ring, cqe);
control_writeulong(iovec_hash_djb2(iovec, test_data->vecs_cnt));
control_writeln("DONE");
io_uring_queue_exit(&ring);
free_test_iovec(test_data->vecs, iovec, test_data->vecs_cnt);
close(fd);
}
static void vsock_io_uring_server(const struct test_opts *opts,
const struct vsock_io_uring_test *test_data)
{
unsigned long remote_hash;
unsigned long local_hash;
struct io_uring ring;
size_t data_len;
size_t recv_len;
void *data;
int fd;
fd = vsock_stream_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
if (fd < 0) {
perror("accept");
exit(EXIT_FAILURE);
}
data_len = iovec_bytes(test_data->vecs, test_data->vecs_cnt);
data = malloc(data_len);
if (!data) {
perror("malloc");
exit(EXIT_FAILURE);
}
if (io_uring_queue_init(RING_ENTRIES_NUM, &ring, 0))
error(1, errno, "io_uring_queue_init");
recv_len = 0;
while (recv_len < data_len) {
struct io_uring_sqe *sqe;
struct io_uring_cqe *cqe;
struct iovec iovec;
sqe = io_uring_get_sqe(&ring);
iovec.iov_base = data + recv_len;
iovec.iov_len = data_len;
io_uring_prep_readv(sqe, fd, &iovec, 1, 0);
if (io_uring_submit(&ring) != 1)
error(1, errno, "io_uring_submit");
if (io_uring_wait_cqe(&ring, &cqe))
error(1, errno, "io_uring_wait_cqe");
recv_len += cqe->res;
io_uring_cqe_seen(&ring, cqe);
}
if (recv_len != data_len) {
fprintf(stderr, "expected %zu, got %zu\n", data_len,
recv_len);
exit(EXIT_FAILURE);
}
local_hash = hash_djb2(data, data_len);
remote_hash = control_readulong();
if (remote_hash != local_hash) {
fprintf(stderr, "hash mismatch\n");
exit(EXIT_FAILURE);
}
control_expectln("DONE");
io_uring_queue_exit(&ring);
free(data);
}
void test_stream_uring_server(const struct test_opts *opts)
{
int i;
for (i = 0; i < ARRAY_SIZE(test_data_array); i++)
vsock_io_uring_server(opts, &test_data_array[i]);
}
void test_stream_uring_client(const struct test_opts *opts)
{
int i;
for (i = 0; i < ARRAY_SIZE(test_data_array); i++)
vsock_io_uring_client(opts, &test_data_array[i], false);
}
void test_stream_uring_msg_zc_server(const struct test_opts *opts)
{
int i;
for (i = 0; i < ARRAY_SIZE(test_data_array); i++)
vsock_io_uring_server(opts, &test_data_array[i]);
}
void test_stream_uring_msg_zc_client(const struct test_opts *opts)
{
int i;
for (i = 0; i < ARRAY_SIZE(test_data_array); i++)
vsock_io_uring_client(opts, &test_data_array[i], true);
}
static struct test_case test_cases[] = {
{
.name = "SOCK_STREAM io_uring test",
.run_server = test_stream_uring_server,
.run_client = test_stream_uring_client,
},
{
.name = "SOCK_STREAM io_uring MSG_ZEROCOPY test",
.run_server = test_stream_uring_msg_zc_server,
.run_client = test_stream_uring_msg_zc_client,
},
{},
};
static const char optstring[] = "";
static const struct option longopts[] = {
{
.name = "control-host",
.has_arg = required_argument,
.val = 'H',
},
{
.name = "control-port",
.has_arg = required_argument,
.val = 'P',
},
{
.name = "mode",
.has_arg = required_argument,
.val = 'm',
},
{
.name = "peer-cid",
.has_arg = required_argument,
.val = 'p',
},
{
.name = "peer-port",
.has_arg = required_argument,
.val = 'q',
},
{
.name = "help",
.has_arg = no_argument,
.val = '?',
},
{},
};
static void usage(void)
{
fprintf(stderr, "Usage: vsock_uring_test [--help] [--control-host=<host>] --control-port=<port> --mode=client|server --peer-cid=<cid> [--peer-port=<port>]\n"
"\n"
" Server: vsock_uring_test --control-port=1234 --mode=server --peer-cid=3\n"
" Client: vsock_uring_test --control-host=192.168.0.1 --control-port=1234 --mode=client --peer-cid=2\n"
"\n"
"Run transmission tests using io_uring. Usage is the same as\n"
"in ./vsock_test\n"
"\n"
"Options:\n"
" --help This help message\n"
" --control-host <host> Server IP address to connect to\n"
" --control-port <port> Server port to listen on/connect to\n"
" --mode client|server Server or client mode\n"
" --peer-cid <cid> CID of the other side\n"
" --peer-port <port> AF_VSOCK port used for the test [default: %d]\n",
DEFAULT_PEER_PORT
);
exit(EXIT_FAILURE);
}
int main(int argc, char **argv)
{
const char *control_host = NULL;
const char *control_port = NULL;
struct test_opts opts = {
.mode = TEST_MODE_UNSET,
.peer_cid = VMADDR_CID_ANY,
.peer_port = DEFAULT_PEER_PORT,
};
init_signals();
for (;;) {
int opt = getopt_long(argc, argv, optstring, longopts, NULL);
if (opt == -1)
break;
switch (opt) {
case 'H':
control_host = optarg;
break;
case 'm':
if (strcmp(optarg, "client") == 0) {
opts.mode = TEST_MODE_CLIENT;
} else if (strcmp(optarg, "server") == 0) {
opts.mode = TEST_MODE_SERVER;
} else {
fprintf(stderr, "--mode must be \"client\" or \"server\"\n");
return EXIT_FAILURE;
}
break;
case 'p':
opts.peer_cid = parse_cid(optarg);
break;
case 'q':
opts.peer_port = parse_port(optarg);
break;
case 'P':
control_port = optarg;
break;
case '?':
default:
usage();
}
}
if (!control_port)
usage();
if (opts.mode == TEST_MODE_UNSET)
usage();
if (opts.peer_cid == VMADDR_CID_ANY)
usage();
if (!control_host) {
if (opts.mode != TEST_MODE_SERVER)
usage();
control_host = "0.0.0.0";
}
control_init(control_host, control_port,
opts.mode == TEST_MODE_SERVER);
run_tests(test_cases, &opts);
control_cleanup();
return 0;
}
Codebase Browser
linux