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vsock_test: add SOCK_SEQPACKET tests 

Implement two tests of SOCK_SEQPACKET socket: first sends data by
several 'write()'s and checks that number of 'read()' were same.
Second test checks MSG_TRUNC flag. Cases for connect(), bind(),
etc. are not tested, because it is same as for stream socket.

Signed-off-by: Arseny Krasnov <arseny.krasnov@kaspersky.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arseny Krasnov 2021-06-11 14:14:04 +03:00 committed by David S. Miller
parent 6e90a57795
commit 41b792d7a8
3 changed files with 146 additions and 5 deletions
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32
tools/testing/vsock/util.c
View File

@ -84,7 +84,7 @@ void vsock_wait_remote_close(int fd)
}
/* Connect to <cid, port> and return the file descriptor. */
int vsock_stream_connect(unsigned int cid, unsigned int port)
static int vsock_connect(unsigned int cid, unsigned int port, int type)
{
union {
struct sockaddr sa;
@ -101,7 +101,7 @@ int vsock_stream_connect(unsigned int cid, unsigned int port)
control_expectln("LISTENING");
fd = socket(AF_VSOCK, SOCK_STREAM, 0);
fd = socket(AF_VSOCK, type, 0);
timeout_begin(TIMEOUT);
do {
@ -120,11 +120,21 @@ int vsock_stream_connect(unsigned int cid, unsigned int port)
return fd;
}
int vsock_stream_connect(unsigned int cid, unsigned int port)
{
return vsock_connect(cid, port, SOCK_STREAM);
}
int vsock_seqpacket_connect(unsigned int cid, unsigned int port)
{
return vsock_connect(cid, port, SOCK_SEQPACKET);
}
/* Listen on <cid, port> and return the first incoming connection. The remote
* address is stored to clientaddrp. clientaddrp may be NULL.
*/
int vsock_stream_accept(unsigned int cid, unsigned int port,
struct sockaddr_vm *clientaddrp)
static int vsock_accept(unsigned int cid, unsigned int port,
struct sockaddr_vm *clientaddrp, int type)
{
union {
struct sockaddr sa;
@ -145,7 +155,7 @@ int vsock_stream_accept(unsigned int cid, unsigned int port,
int client_fd;
int old_errno;
fd = socket(AF_VSOCK, SOCK_STREAM, 0);
fd = socket(AF_VSOCK, type, 0);
if (bind(fd, &addr.sa, sizeof(addr.svm)) < 0) {
perror("bind");
@ -189,6 +199,18 @@ int vsock_stream_accept(unsigned int cid, unsigned int port,
return client_fd;
}
int vsock_stream_accept(unsigned int cid, unsigned int port,
struct sockaddr_vm *clientaddrp)
{
return vsock_accept(cid, port, clientaddrp, SOCK_STREAM);
}
int vsock_seqpacket_accept(unsigned int cid, unsigned int port,
struct sockaddr_vm *clientaddrp)
{
return vsock_accept(cid, port, clientaddrp, SOCK_SEQPACKET);
}
/* Transmit one byte and check the return value.
*
* expected_ret:

3
tools/testing/vsock/util.h
View File

@ -36,8 +36,11 @@ struct test_case {
void init_signals(void);
unsigned int parse_cid(const char *str);
int vsock_stream_connect(unsigned int cid, unsigned int port);
int vsock_seqpacket_connect(unsigned int cid, unsigned int port);
int vsock_stream_accept(unsigned int cid, unsigned int port,
struct sockaddr_vm *clientaddrp);
int vsock_seqpacket_accept(unsigned int cid, unsigned int port,
struct sockaddr_vm *clientaddrp);
void vsock_wait_remote_close(int fd);
void send_byte(int fd, int expected_ret, int flags);
void recv_byte(int fd, int expected_ret, int flags);

116
tools/testing/vsock/vsock_test.c
View File

@ -14,6 +14,8 @@
#include <errno.h>
#include <unistd.h>
#include <linux/kernel.h>
#include <sys/types.h>
#include <sys/socket.h>
#include "timeout.h"
#include "control.h"
@ -279,6 +281,110 @@ static void test_stream_msg_peek_server(const struct test_opts *opts)
close(fd);
}
#define MESSAGES_CNT 7
static void test_seqpacket_msg_bounds_client(const struct test_opts *opts)
{
int fd;
fd = vsock_seqpacket_connect(opts->peer_cid, 1234);
if (fd < 0) {
perror("connect");
exit(EXIT_FAILURE);
}
/* Send several messages, one with MSG_EOR flag */
for (int i = 0; i < MESSAGES_CNT; i++)
send_byte(fd, 1, 0);
control_writeln("SENDDONE");
close(fd);
}
static void test_seqpacket_msg_bounds_server(const struct test_opts *opts)
{
int fd;
char buf[16];
struct msghdr msg = {0};
struct iovec iov = {0};
fd = vsock_seqpacket_accept(VMADDR_CID_ANY, 1234, NULL);
if (fd < 0) {
perror("accept");
exit(EXIT_FAILURE);
}
control_expectln("SENDDONE");
iov.iov_base = buf;
iov.iov_len = sizeof(buf);
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
for (int i = 0; i < MESSAGES_CNT; i++) {
if (recvmsg(fd, &msg, 0) != 1) {
perror("message bound violated");
exit(EXIT_FAILURE);
}
}
close(fd);
}
#define MESSAGE_TRUNC_SZ 32
static void test_seqpacket_msg_trunc_client(const struct test_opts *opts)
{
int fd;
char buf[MESSAGE_TRUNC_SZ];
fd = vsock_seqpacket_connect(opts->peer_cid, 1234);
if (fd < 0) {
perror("connect");
exit(EXIT_FAILURE);
}
if (send(fd, buf, sizeof(buf), 0) != sizeof(buf)) {
perror("send failed");
exit(EXIT_FAILURE);
}
control_writeln("SENDDONE");
close(fd);
}
static void test_seqpacket_msg_trunc_server(const struct test_opts *opts)
{
int fd;
char buf[MESSAGE_TRUNC_SZ / 2];
struct msghdr msg = {0};
struct iovec iov = {0};
fd = vsock_seqpacket_accept(VMADDR_CID_ANY, 1234, NULL);
if (fd < 0) {
perror("accept");
exit(EXIT_FAILURE);
}
control_expectln("SENDDONE");
iov.iov_base = buf;
iov.iov_len = sizeof(buf);
msg.msg_iov = &iov;
msg.msg_iovlen = 1;
ssize_t ret = recvmsg(fd, &msg, MSG_TRUNC);
if (ret != MESSAGE_TRUNC_SZ) {
printf("%zi\n", ret);
perror("MSG_TRUNC doesn't work");
exit(EXIT_FAILURE);
}
if (!(msg.msg_flags & MSG_TRUNC)) {
fprintf(stderr, "MSG_TRUNC expected\n");
exit(EXIT_FAILURE);
}
close(fd);
}
static struct test_case test_cases[] = {
{
.name = "SOCK_STREAM connection reset",
@ -309,6 +415,16 @@ static struct test_case test_cases[] = {
.run_client = test_stream_msg_peek_client,
.run_server = test_stream_msg_peek_server,
},
{
.name = "SOCK_SEQPACKET msg bounds",
.run_client = test_seqpacket_msg_bounds_client,
.run_server = test_seqpacket_msg_bounds_server,
},
{
.name = "SOCK_SEQPACKET MSG_TRUNC flag",
.run_client = test_seqpacket_msg_trunc_client,
.run_server = test_seqpacket_msg_trunc_server,
},
{},
};