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45 lines
1.2 KiB
C++
45 lines
1.2 KiB
C++
/* Netlink related functions.
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*
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* Author: Steffen Vogel <post@steffenvogel.de>
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* SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include <sys/socket.h>
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#include <netlink/netlink.h>
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#include <netlink/route/link.h>
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#include <netlink/route/route.h>
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namespace villas {
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namespace kernel {
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namespace nl {
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/* Get index of outgoing interface for given destination address.
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*
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* @retval >=0 Interface index of outgoing interface.
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* @retval <0 Error. Something went wrong.
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*/
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int get_egress(struct nl_addr *addr);
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/* Lookup routing tables to get the interface on which packets for a certain destination
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* will leave the system.
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*
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* @param[in] sa The destination address for outgoing packets.
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* @param[out] link The egress interface.
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* @retval 0 Success. Everything went well.
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* @retval <0 Error. Something went wrong.
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*/
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struct rtnl_link *get_egress_link(struct sockaddr *sa);
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// Get or create global netlink socket.
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struct nl_sock *init();
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// Close and free global netlink socket.
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void shutdown();
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} // namespace nl
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} // namespace kernel
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} // namespace villas
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