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Message-ID: <20210413124701.3407363-1-arseny.krasnov@kaspersky.com>
Date: Tue, 13 Apr 2021 15:46:58 +0300
From: Arseny Krasnov <arseny.krasnov@...persky.com>
To: Stefan Hajnoczi <stefanha@...hat.com>,
Stefano Garzarella <sgarzare@...hat.com>,
"Michael S. Tsirkin" <mst@...hat.com>,
Jason Wang <jasowang@...hat.com>,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Jorgen Hansen <jhansen@...are.com>,
Colin Ian King <colin.king@...onical.com>,
Andra Paraschiv <andraprs@...zon.com>,
Norbert Slusarek <nslusarek@....net>,
David Brazdil <dbrazdil@...gle.com>,
Alexander Popov <alex.popov@...ux.com>
CC: <kvm@...r.kernel.org>, <virtualization@...ts.linux-foundation.org>,
<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<stsp2@...dex.ru>, <arseny.krasnov@...persky.com>,
<oxffffaa@...il.com>
Subject: [RFC PATCH v8 17/19] vsock_test: add SOCK_SEQPACKET tests
This adds test of SOCK_SEQPACKET socket: it transfer data and
then tests 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@...persky.com>
---
v7 -> v8:
- Test for MSG_EOR flags now removed.
tools/testing/vsock/util.c | 32 +++++++++++++---
tools/testing/vsock/util.h | 3 ++
tools/testing/vsock/vsock_test.c | 63 ++++++++++++++++++++++++++++++++
3 files changed, 93 insertions(+), 5 deletions(-)
diff --git a/tools/testing/vsock/util.c b/tools/testing/vsock/util.c
index 93cbd6f603f9..2acbb7703c6a 100644
--- a/tools/testing/vsock/util.c
+++ b/tools/testing/vsock/util.c
@@ -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:
diff --git a/tools/testing/vsock/util.h b/tools/testing/vsock/util.h
index e53dd09d26d9..a3375ad2fb7f 100644
--- a/tools/testing/vsock/util.h
+++ b/tools/testing/vsock/util.h
@@ -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);
diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
index 5a4fb80fa832..ffec985fd36f 100644
--- a/tools/testing/vsock/vsock_test.c
+++ b/tools/testing/vsock/vsock_test.c
@@ -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 +281,62 @@ static void test_stream_msg_peek_server(const struct test_opts *opts)
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 +367,11 @@ static struct test_case test_cases[] = {
.run_client = test_stream_msg_peek_client,
.run_server = test_stream_msg_peek_server,
},
+ {
+ .name = "SOCK_SEQPACKET send data MSG_TRUNC",
+ .run_client = test_seqpacket_msg_trunc_client,
+ .run_server = test_seqpacket_msg_trunc_server,
+ },
{},
};
--
2.25.1
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