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Message-Id: <20240730-ioctl-v4-3-16d89286a8f0@outlook.com>
Date: Tue, 30 Jul 2024 21:43:08 +0200
From: Luigi Leonardi via B4 Relay <devnull+luigi.leonardi.outlook.com@...nel.org>
To: Stefano Garzarella <sgarzare@...hat.com>,
"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Stefan Hajnoczi <stefanha@...hat.com>,
"Michael S. Tsirkin" <mst@...hat.com>, Jason Wang <jasowang@...hat.com>,
Eugenio Pérez <eperezma@...hat.com>,
Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Cc: virtualization@...ts.linux.dev, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
Luigi Leonardi <luigi.leonardi@...look.com>
Subject: [PATCH net-next v4 3/3] test/vsock: add ioctl unsent bytes test
From: Luigi Leonardi <luigi.leonardi@...look.com>
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.
Signed-off-by: Luigi Leonardi <luigi.leonardi@...look.com>
---
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(-)
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
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