tb_tunnel_alloc_dp
tunnel = tb_tunnel_alloc_dp(tb, in, out, link_nr, available_up,
tunnel = tb_tunnel_alloc_dp(NULL, in, out, 1, 0, 0, NULL, NULL);
tunnel = tb_tunnel_alloc_dp(NULL, in, out, 1, 0, 0, NULL, NULL);
tunnel = tb_tunnel_alloc_dp(NULL, in, out, 1, 0, 0, NULL, NULL);
tunnel = tb_tunnel_alloc_dp(NULL, in, out, 1, 0, 0, NULL, NULL);
tunnel1 = tb_tunnel_alloc_dp(NULL, in1, out1, 1, 0, 0, NULL, NULL);
tunnel2 = tb_tunnel_alloc_dp(NULL, in2, out2, 1, 0, 0, NULL, NULL);
tunnel3 = tb_tunnel_alloc_dp(NULL, in3, out3, 1, 0, 0, NULL, NULL);
dp_tunnel = tb_tunnel_alloc_dp(NULL, in, out, 1, 0, 0, NULL, NULL);
tunnel = tb_tunnel_alloc_dp(NULL, in, out, 1, 0, 0, NULL, NULL);
dp_tunnel1 = tb_tunnel_alloc_dp(NULL, in, out, 1, 0, 0, NULL, NULL);
dp_tunnel2 = tb_tunnel_alloc_dp(NULL, in, out, 1, 0, 0, NULL, NULL);
struct tb_tunnel *tb_tunnel_alloc_dp(struct tb *tb, struct tb_port *in,