/* Setup interface queuing desciplines for network emulation. * * We use the firewall mark to apply individual netem qdiscs * per node. Every node uses an own BSD socket. * By using so SO_MARK socket option (see socket(7)) * we can classify traffic originating from a node seperately. * * Author: Steffen Vogel * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University * SPDX-License-Identifier: Apache-2.0 */ #pragma once #include #include #include #include namespace villas { namespace kernel { // Forward declarations class Interface; namespace tc { typedef uint32_t tc_hdl_t; /* Remove all queuing disciplines and filters. * * @param i The interface * @retval 0 Success. Everything went well. * @retval <0 Error. Something went wrong. */ int reset(Interface *i); /* Create a priority (prio) queueing discipline. * * @param i[in] The interface * @param qd[in,out] The libnl3 object of the new prio qdisc. * @param handle[in] The handle for the new qdisc * @param parent[in] Make this qdisc a child of this class * @param bands[in] The number of classes for this new qdisc * @retval 0 Success. Everything went well. * @retval <0 Error. Something went wrong. */ int prio(Interface *i, struct rtnl_qdisc **qd, tc_hdl_t handle, tc_hdl_t, int bands); /* Add a new filter based on the netfilter mark. * * @param i The interface to which this classifier is applied to. * @param cls[in,out] The libnl3 object of the new prio qdisc. * @param flowid The destination class for matched traffic * @param mark The netfilter firewall mark (sometime called 'fwmark') * @retval 0 Success. Everything went well. * @retval <0 Error. Something went wrong. */ int mark(Interface *i, struct rtnl_cls **cls, tc_hdl_t flowid, uint32_t mark); } // namespace tc } // namespace kernel } // namespace villas