[PATCH net 2/2] vsock/test: Test setting SO_ZEROCOPY on accept()ed socket

Michal Luczaj
2025-12-23T09:58:00Z

Make sure setsockopt(SOL_SOCKET, SO_ZEROCOPY) on an accept()ed socket is
handled by vsock's implementation.

Signed-off-by: Michal Luczaj <mhal@rbox.co>
---
tools/testing/vsock/vsock_test.c | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)

diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
index 9e1250790f33..8ec8f0844e22 100644
--- a/tools/testing/vsock/vsock_test.c
+++ b/tools/testing/vsock/vsock_test.c
@@ -2192,6 +2192,34 @@ static void test_stream_nolinger_server(const struct test_opts *opts)
close(fd);
}

+static void test_stream_accepted_setsockopt_client(const struct test_opts *opts)
+{
+ int fd;
+
+ fd = vsock_stream_connect(opts->peer_cid, opts->peer_port);
+ if (fd < 0) {
+ perror("connect");
+ exit(EXIT_FAILURE);
+ }
+
+ vsock_wait_remote_close(fd);
+ close(fd);
+}
+
+static void test_stream_accepted_setsockopt_server(const struct test_opts *opts)
+{
+ int fd;
+
+ fd = vsock_stream_accept(VMADDR_CID_ANY, opts->peer_port, NULL);
+ if (fd < 0) {
+ perror("accept");
+ exit(EXIT_FAILURE);
+ }
+
+ enable_so_zerocopy_check(fd);
+ close(fd);
+}
+
static struct test_case test_cases[] = {
{
.name = "SOCK_STREAM connection reset",
@@ -2371,6 +2399,11 @@ static struct test_case test_cases[] = {
.run_client = test_seqpacket_unread_bytes_client,
.run_server = test_seqpacket_unread_bytes_server,
},
+ {
+ .name = "SOCK_STREAM accept()ed socket custom setsockopt()",
+ .run_client = test_stream_accepted_setsockopt_client,
+ .run_server = test_stream_accepted_setsockopt_server,
+ },
{},
};

--
2.52.0