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VILLASnode/include/villas/kernel/nl.hpp

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/* Netlink related functions.
*
* Author: Steffen Vogel <post@steffenvogel.de>
* SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
* SPDX-License-Identifier: Apache-2.0
*/
2017-02-16 09:04:12 -03:00
#pragma once
#include <sys/socket.h>
#include <netlink/netlink.h>
#include <netlink/route/link.h>
#include <netlink/route/route.h>
namespace villas {
namespace kernel {
namespace nl {
/* Get index of outgoing interface for given destination address.
*
* @retval >=0 Interface index of outgoing interface.
* @retval <0 Error. Something went wrong.
*/
int get_egress(struct nl_addr *addr);
/* Lookup routing tables to get the interface on which packets for a certain destination
* will leave the system.
*
* @param[in] sa The destination address for outgoing packets.
* @param[out] link The egress interface.
* @retval 0 Success. Everything went well.
* @retval <0 Error. Something went wrong.
*/
struct rtnl_link *get_egress_link(struct sockaddr *sa);
// Get or create global netlink socket.
struct nl_sock *init();
// Close and free global netlink socket.
void shutdown();
} // namespace nl
} // namespace kernel
} // namespace villas