linux-kernel - [RFC PATCH v1 7/7] vsock_test: 'SO

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Message-ID: <20210726163439.2590222-1-arseny.krasnov@kaspersky.com>
Date:   Mon, 26 Jul 2021 19:34:36 +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>,
        Arseny Krasnov <arseny.krasnov@...persky.com>,
        Jorgen Hansen <jhansen@...are.com>,
        Andra Paraschiv <andraprs@...zon.com>,
        Colin Ian King <colin.king@...onical.com>,
        Norbert Slusarek <nslusarek@....net>
CC:     <kvm@...r.kernel.org>, <virtualization@...ts.linux-foundation.org>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <oxffffaa@...il.com>
Subject: [RFC PATCH v1 7/7] vsock_test: 'SO_RCVTIMEO' test for SEQPACKET

Test for receive timeout check: connection is established,
receiver sets timeout, but sender does nothing. Receiver's
'read()' call must return EAGAIN.

Signed-off-by: Arseny Krasnov <arseny.krasnov@...persky.com>
---
 tools/testing/vsock/vsock_test.c | 49 ++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
index 2a3638c0a008..aa2de27d0f77 100644
--- a/tools/testing/vsock/vsock_test.c
+++ b/tools/testing/vsock/vsock_test.c
@@ -391,6 +391,50 @@ static void test_seqpacket_msg_trunc_server(const struct test_opts *opts)
 	close(fd);
 }
 
+static void test_seqpacket_timeout_client(const struct test_opts *opts)
+{
+	int fd;
+	struct timeval tv;
+	char dummy;
+
+	fd = vsock_seqpacket_connect(opts->peer_cid, 1234);
+	if (fd < 0) {
+		perror("connect");
+		exit(EXIT_FAILURE);
+	}
+
+	tv.tv_sec = 1;
+	tv.tv_usec = 0;
+
+	if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, (void *)&tv, sizeof(tv)) == -1) {
+		perror("setsockopt 'SO_RCVTIMEO'");
+		exit(EXIT_FAILURE);
+	}
+
+	if ((read(fd, &dummy, sizeof(dummy)) != -1) ||
+	    (errno != EAGAIN)) {
+		perror("EAGAIN expected");
+		exit(EXIT_FAILURE);
+	}
+
+	control_writeln("WAITDONE");
+	close(fd);
+}
+
+static void test_seqpacket_timeout_server(const struct test_opts *opts)
+{
+	int fd;
+
+	fd = vsock_seqpacket_accept(VMADDR_CID_ANY, 1234, NULL);
+	if (fd < 0) {
+		perror("accept");
+		exit(EXIT_FAILURE);
+	}
+
+	control_expectln("WAITDONE");
+	close(fd);
+}
+
 static struct test_case test_cases[] = {
 	{
 		.name = "SOCK_STREAM connection reset",
@@ -431,6 +475,11 @@ static struct test_case test_cases[] = {
 		.run_client = test_seqpacket_msg_trunc_client,
 		.run_server = test_seqpacket_msg_trunc_server,
 	},
+	{
+		.name = "SOCK_SEQPACKET timeout",
+		.run_client = test_seqpacket_timeout_client,
+		.run_server = test_seqpacket_timeout_server,
+	},
 	{},
 };
 
-- 
2.25.1