tb_tunnel_alloc_dma
tunnel = tb_tunnel_alloc_dma(tb, nhi_port, dst_port, transmit_path,
tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 8, 1, 8, 1);
tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, -1, -1, 15, 2);
tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 15, 2, -1, -1);
tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 8, 1, 8, 1);
tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 15, 1, 15, 1);
tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 15, 1, -1, -1);
tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, -1, -1, 15, 11);
tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 8, 1, 8, 1);
tunnel1 = tb_tunnel_alloc_dma(NULL, nhi, port, 8, 1, 8, 1);
tunnel2 = tb_tunnel_alloc_dma(NULL, nhi, port, 9, 2, 9, 2);
tunnel3 = tb_tunnel_alloc_dma(NULL, nhi, port, 10, 3, 10, 3);
tunnel3 = tb_tunnel_alloc_dma(NULL, nhi, port, 10, 3, 10, 3);
dma_tunnel1 = tb_tunnel_alloc_dma(NULL, nhi, port, 8, 1, 8, 1);
dma_tunnel2 = tb_tunnel_alloc_dma(NULL, nhi, port, 9, 2, 9, 2);
struct tb_tunnel *tb_tunnel_alloc_dma(struct tb *tb, struct tb_port *nhi,