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Message-ID: <20221201094541.gj7zthelbeqhsp63@sgarzare-redhat>
Date: Thu, 1 Dec 2022 10:45:41 +0100
From: Stefano Garzarella <sgarzare@...hat.com>
To: Arseniy Krasnov <AVKrasnov@...rdevices.ru>
Cc: "David S. Miller" <davem@...emloft.net>,
"edumazet@...gle.com" <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
"kys@...rosoft.com" <kys@...rosoft.com>,
"haiyangz@...rosoft.com" <haiyangz@...rosoft.com>,
"wei.liu@...nel.org" <wei.liu@...nel.org>,
Dexuan Cui <decui@...rosoft.com>,
Bryan Tan <bryantan@...are.com>,
Vishnu Dasa <vdasa@...are.com>,
Krasnov Arseniy <oxffffaa@...il.com>,
Bobby Eshleman <bobby.eshleman@...il.com>,
Bobby Eshleman <bobby.eshleman@...edance.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"virtualization@...ts.linux-foundation.org"
<virtualization@...ts.linux-foundation.org>,
"linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
kernel <kernel@...rdevices.ru>
Subject: Re: [RFC PATCH v2 5/6] test/vsock: add big message test
On Fri, Nov 25, 2022 at 05:13:06PM +0000, Arseniy Krasnov wrote:
>This adds test for sending message, bigger than peer's buffer size.
>For SOCK_SEQPACKET socket it must fail, as this type of socket has
>message size limit.
>
>Signed-off-by: Arseniy Krasnov <AVKrasnov@...rdevices.ru>
>---
> tools/testing/vsock/vsock_test.c | 69 ++++++++++++++++++++++++++++++++
> 1 file changed, 69 insertions(+)
>
>diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
>index 12ef0cca6f93..a8e43424fb32 100644
>--- a/tools/testing/vsock/vsock_test.c
>+++ b/tools/testing/vsock/vsock_test.c
>@@ -569,6 +569,70 @@ static void test_seqpacket_timeout_server(const struct test_opts *opts)
> close(fd);
> }
>
>+static void test_seqpacket_bigmsg_client(const struct test_opts *opts)
>+{
>+ unsigned long sock_buf_size;
>+ ssize_t send_size;
>+ socklen_t len;
>+ void *data;
>+ int fd;
>+
>+ len = sizeof(sock_buf_size);
>+
>+ fd = vsock_seqpacket_connect(opts->peer_cid, 1234);
>+ if (fd < 0) {
>+ perror("connect");
>+ exit(EXIT_FAILURE);
>+ }
>+
>+ if (getsockopt(fd, AF_VSOCK, SO_VM_SOCKETS_BUFFER_SIZE,
>+ &sock_buf_size, &len)) {
>+ perror("getsockopt");
>+ exit(EXIT_FAILURE);
>+ }
>+
>+ sock_buf_size++;
>+
>+ data = malloc(sock_buf_size);
>+ if (!data) {
>+ perror("malloc");
>+ exit(EXIT_FAILURE);
>+ }
>+
>+ send_size = send(fd, data, sock_buf_size, 0);
>+ if (send_size != -1) {
>+ fprintf(stderr, "expected 'send(2)' failure, got %zi\n",
>+ send_size);
>+ exit(EXIT_FAILURE);
>+ }
>+
>+ if (errno != EMSGSIZE) {
>+ fprintf(stderr, "expected EMSGSIZE in 'errno', got %i\n",
>+ errno);
>+ exit(EXIT_FAILURE);
>+ }
We should make sure that this is true for all transports, but since now
only virtio-vsock supports it, we should be okay.
>+
>+ control_writeln("CLISENT");
>+
>+ free(data);
>+ close(fd);
>+}
>+
>+static void test_seqpacket_bigmsg_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("CLISENT");
>+
>+ close(fd);
>+}
>+
> #define BUF_PATTERN_1 'a'
> #define BUF_PATTERN_2 'b'
>
>@@ -851,6 +915,11 @@ static struct test_case test_cases[] = {
> .run_client = test_stream_poll_rcvlowat_client,
> .run_server = test_stream_poll_rcvlowat_server,
> },
>+ {
>+ .name = "SOCK_SEQPACKET big message",
>+ .run_client = test_seqpacket_bigmsg_client,
>+ .run_server = test_seqpacket_bigmsg_server,
>+ },
> {},
> };
>
>--
>2.25.1
LGTM!
Reviewed-by: Stefano Garzarella <sgarzare@...hat.com>
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