Re: [PATCH net-next v4 3/3] test/vsock: add ioctl unsent bytes test
From: Stefano Garzarella
Date: Wed Jul 31 2024 - 03:34:52 EST
On Tue, Jul 30, 2024 at 09:43:08PM GMT, Luigi Leonardi via B4 Relay wrote:
From: Luigi Leonardi <luigi.leonardi@xxxxxxxxxxx>
Introduce two tests, one for SOCK_STREAM and one for SOCK_SEQPACKET,
which use SIOCOUTQ ioctl to check that the number of unsent bytes is
zero after delivering a packet.
vsock_connect and vsock_accept are no longer static: this is to
create more generic tests, allowing code to be reused for SEQPACKET
and STREAM.
Yeah, good idea. We should use them for other tests as well.
(for the future)
Signed-off-by: Luigi Leonardi <luigi.leonardi@xxxxxxxxxxx>
---
tools/testing/vsock/util.c | 6 +--
tools/testing/vsock/util.h | 3 ++
tools/testing/vsock/vsock_test.c | 85 ++++++++++++++++++++++++++++++++++++++++
3 files changed, 91 insertions(+), 3 deletions(-)
LGTM and I ran them. All good :-)
Reviewed-by: Stefano Garzarella <sgarzare@xxxxxxxxxx>
diff --git a/tools/testing/vsock/util.c b/tools/testing/vsock/util.c
index 554b290fefdc..a3d448a075e3 100644
--- a/tools/testing/vsock/util.c
+++ b/tools/testing/vsock/util.c
@@ -139,7 +139,7 @@ int vsock_bind_connect(unsigned int cid, unsigned int port, unsigned int bind_po
}
/* Connect to <cid, port> and return the file descriptor. */
-static int vsock_connect(unsigned int cid, unsigned int port, int type)
+int vsock_connect(unsigned int cid, unsigned int port, int type)
{
union {
struct sockaddr sa;
@@ -226,8 +226,8 @@ static int vsock_listen(unsigned int cid, unsigned int port, int type)
/* Listen on <cid, port> and return the first incoming connection. The remote
* address is stored to clientaddrp. clientaddrp may be NULL.
*/
-static int vsock_accept(unsigned int cid, unsigned int port,
- struct sockaddr_vm *clientaddrp, int type)
+int vsock_accept(unsigned int cid, unsigned int port,
+ struct sockaddr_vm *clientaddrp, int type)
{
union {
struct sockaddr sa;
diff --git a/tools/testing/vsock/util.h b/tools/testing/vsock/util.h
index e95e62485959..fff22d4a14c0 100644
--- a/tools/testing/vsock/util.h
+++ b/tools/testing/vsock/util.h
@@ -39,6 +39,9 @@ struct test_case {
void init_signals(void);
unsigned int parse_cid(const char *str);
unsigned int parse_port(const char *str);
+int vsock_connect(unsigned int cid, unsigned int port, int type);
+int vsock_accept(unsigned int cid, unsigned int port,
+ struct sockaddr_vm *clientaddrp, int type);
int vsock_stream_connect(unsigned int cid, unsigned int port);
int vsock_bind_connect(unsigned int cid, unsigned int port,
unsigned int bind_port, int type);
diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
index f851f8961247..8d38dbf8f41f 100644
--- a/tools/testing/vsock/vsock_test.c
+++ b/tools/testing/vsock/vsock_test.c
@@ -20,6 +20,8 @@
#include <sys/mman.h>
#include <poll.h>
#include <signal.h>
+#include <sys/ioctl.h>
+#include <linux/sockios.h>
#include "vsock_test_zerocopy.h"
#include "timeout.h"
@@ -1238,6 +1240,79 @@ static void test_double_bind_connect_client(const struct test_opts *opts)
}
}
+#define MSG_BUF_IOCTL_LEN 64
+static void test_unsent_bytes_server(const struct test_opts *opts, int type)
+{
+ unsigned char buf[MSG_BUF_IOCTL_LEN];
+ int client_fd;
+
+ client_fd = vsock_accept(VMADDR_CID_ANY, opts->peer_port, NULL, type);
+ if (client_fd < 0) {
+ perror("accept");
+ exit(EXIT_FAILURE);
+ }
+
+ recv_buf(client_fd, buf, sizeof(buf), 0, sizeof(buf));
+ control_writeln("RECEIVED");
+
+ close(client_fd);
+}
+
+static void test_unsent_bytes_client(const struct test_opts *opts, int type)
+{
+ unsigned char buf[MSG_BUF_IOCTL_LEN];
+ int ret, fd, sock_bytes_unsent;
+
+ fd = vsock_connect(opts->peer_cid, opts->peer_port, type);
+ if (fd < 0) {
+ perror("connect");
+ exit(EXIT_FAILURE);
+ }
+
+ for (int i = 0; i < sizeof(buf); i++)
+ buf[i] = rand() & 0xFF;
+
+ send_buf(fd, buf, sizeof(buf), 0, sizeof(buf));
+ control_expectln("RECEIVED");
+
+ ret = ioctl(fd, SIOCOUTQ, &sock_bytes_unsent);
+ if (ret < 0) {
+ if (errno == EOPNOTSUPP) {
+ fprintf(stderr, "Test skipped, SIOCOUTQ not supported.\n");
+ } else {
+ perror("ioctl");
+ exit(EXIT_FAILURE);
+ }
+ } else if (ret == 0 && sock_bytes_unsent != 0) {
+ fprintf(stderr,
+ "Unexpected 'SIOCOUTQ' value, expected 0, got %i\n",
+ sock_bytes_unsent);
+ exit(EXIT_FAILURE);
+ }
+
+ close(fd);
+}
+
+static void test_stream_unsent_bytes_client(const struct test_opts *opts)
+{
+ test_unsent_bytes_client(opts, SOCK_STREAM);
+}
+
+static void test_stream_unsent_bytes_server(const struct test_opts *opts)
+{
+ test_unsent_bytes_server(opts, SOCK_STREAM);
+}
+
+static void test_seqpacket_unsent_bytes_client(const struct test_opts *opts)
+{
+ test_unsent_bytes_client(opts, SOCK_SEQPACKET);
+}
+
+static void test_seqpacket_unsent_bytes_server(const struct test_opts *opts)
+{
+ test_unsent_bytes_server(opts, SOCK_SEQPACKET);
+}
+
#define RCVLOWAT_CREDIT_UPD_BUF_SIZE (1024 * 128)
/* This define is the same as in 'include/linux/virtio_vsock.h':
* it is used to decide when to send credit update message during
@@ -1523,6 +1598,16 @@ static struct test_case test_cases[] = {
.run_client = test_stream_rcvlowat_def_cred_upd_client,
.run_server = test_stream_cred_upd_on_low_rx_bytes,
},
+ {
+ .name = "SOCK_STREAM ioctl(SIOCOUTQ) 0 unsent bytes",
+ .run_client = test_stream_unsent_bytes_client,
+ .run_server = test_stream_unsent_bytes_server,
+ },
+ {
+ .name = "SOCK_SEQPACKET ioctl(SIOCOUTQ) 0 unsent bytes",
+ .run_client = test_seqpacket_unsent_bytes_client,
+ .run_server = test_seqpacket_unsent_bytes_server,
+ },
{},
};
--
2.45.2