24  * @tunnel_list: List of active tunnels
102 	 * Find all DP tunnels that go through all the same USB4 links  in tb_attach_bandwidth_group()
103 	 * as this one. Because we always setup tunnels the same way we  in tb_attach_bandwidth_group()
104 	 * can just check for the routers at both ends of the tunnels  in tb_attach_bandwidth_group()
655 		 * Find all DP tunnels that cross the port and reduce  in tb_available_bandwidth()
948 	 * tunnels and know which switches were authorized already by  in tb_scan_port()
1002 	 * Create USB 3.x tunnels only when the switch is plugged to the  in tb_scan_port()
1004 	 * and want to discover existing USB 3.x tunnels before we create  in tb_scan_port()
1056 		 * PCIe and DMA tunnels do not consume guaranteed  in tb_deactivate_and_free_tunnel()
1066  * tb_free_invalid_tunnels() - destroy tunnels of devices that have gone away
1182 			 * tunnels under the host router USB4 port, even  in tb_recalc_estimated_bandwidth_for_group()
1473 	 * Tear down all DP tunnels and release their resources. They  in tb_disconnect_and_release_dp()
1721 			 * all the tunnels below.  in tb_handle_hotplug()
1842 		 * the reservation of the tunnel. Since all the tunnels  in tb_alloc_dp_bandwidth()
1845 		 * account for the other tunnels automatically below.  in tb_alloc_dp_bandwidth()
1860 	 * Then go over all tunnels that cross the same USB4 ports (they  in tb_alloc_dp_bandwidth()
2051 	/* tunnels are only present after everything has been initialized */  in tb_stop()
2054 		 * DMA tunnels require the driver to be functional so we  in tb_stop()
2055 		 * tear them down. Other protocol tunnels can be left  in tb_stop()
2130 	/* Find out tunnels created by the boot firmware */  in tb_start()
2132 	/* Add DP resources from the DP tunnels created by the boot firmware */  in tb_start()
2135 	 * If the boot firmware did not create USB 3.x tunnels create them  in tb_start()
2199 	LIST_HEAD(tunnels);  in tb_resume_noirq()
2213 	 * restore kernel might have created tunnels of its own. Since  in tb_resume_noirq()
2217 	tb_switch_discover_tunnels(tb->root_switch, &tunnels, false);  in tb_resume_noirq()
2218 	list_for_each_entry_safe_reverse(tunnel, n, &tunnels, list) {  in tb_resume_noirq()
2225 	/* Re-create our tunnels now */  in tb_resume_noirq()
2240 		tb_dbg(tb, "tunnels restarted, sleeping for 100ms\n");  in tb_resume_noirq()
2368  * tunnels are lost. The NHI driver will try to reestablish all tunnels
2405 	 * back to NHI so that PCIe tunnels can be re-established after  in tb_apple_add_links()
2459 	 * Device links are needed to make sure we establish tunnels  in tb_probe()