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/* Copyright (C) 2021 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/*!
* \brief UDP sockets threading model.
*
* The master socket locks one worker thread at a time
* and saves events in it's own backing store for asynchronous processing.
* The worker threads work asynchronously in thread pool.
*/
#pragma once
#include "knot/server/dthreads.h"
#define RECVMMSG_BATCHLEN 10 /*!< Default recvmmsg() batch size. */
/*!
* \brief UDP handler thread runnable.
*
* Listen to DNS datagrams in a loop on a UDP socket and
* reply to them. This runnable is designed to be used as coherent
* and implements cancellation point.
*
* \param thread Associated thread from DThreads unit.
*
* \retval KNOT_EOK on success.
* \retval KNOT_EINVAL invalid parameters.
*/
int udp_master(dthread_t *thread);
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