Re: [PATCH bpf-next v4 2/2] selftests/bpf: Add mptcp subflow subtest

[Martin KaFai Lau]

On 8/5/24 2:52 AM, Matthieu Baerts (NGI0) wrote:

+static void run_subflow(char *new)
+{
+       int server_fd, client_fd, err;
+       char cc[TCP_CA_NAME_MAX];
+       socklen_t len = sizeof(cc);
+
+       server_fd = start_mptcp_server(AF_INET, ADDR_1, PORT_1, 0);
+       if (!ASSERT_GE(server_fd, 0, "start_mptcp_server"))
+               return;
+
+       client_fd = connect_to_fd(server_fd, 0);
+       if (!ASSERT_GE(client_fd, 0, "connect to fd"))
+               goto fail;
+
+       err = getsockopt(server_fd, SOL_TCP, TCP_CONGESTION, cc, &len);
+       if (!ASSERT_OK(err, "getsockopt(srv_fd, TCP_CONGESTION)"))
+               goto fail;

client_fd is leaked.

+
+       send_byte(client_fd);
+
+       ASSERT_OK(ss_search(ADDR_1, "fwmark:0x1"), "ss_search fwmark:0x1");
+       ASSERT_OK(ss_search(ADDR_2, "fwmark:0x2"), "ss_search fwmark:0x2");
+       ASSERT_OK(ss_search(ADDR_1, new), "ss_search new cc");
+       ASSERT_OK(ss_search(ADDR_2, cc), "ss_search default cc");
+
+       close(client_fd);
+fail:
+       close(server_fd);
+}