vsock/test: Test setting SO_ZEROCOPY on accept()ed socket

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

Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Link: https://patch.msgid.link/20251229-vsock-child-sock-custom-sockopt-v2-2-64778d6c4f88@rbox.co
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
index 9e1250790f33d6d6c6ab47d01f6aea9f68961d85..bbe3723babdc4c784d6b39fd0fc031da304f2e06 100644 (file)
--- a/tools/testing/vsock/vsock_test.c
+++ b/tools/testing/vsock/vsock_test.c
@@ -2192,6 +2192,33 @@ 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);
+       }
+
+       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 +2398,11 @@ 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,
+       },
        {},
 };