corosync-qdevice/qdevices/qdevice-net-algo-2nodelms.c

/*
 * Copyright (c) 2015-2017 Red Hat, Inc.
 *
 * All rights reserved.
 *
 * Author: Jan Friesse (jfriesse@redhat.com)
 *
 * This software licensed under BSD license, the text of which follows:
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * - Neither the name of the Red Hat, Inc. nor the names of its
 *   contributors may be used to endorse or promote products derived from this
 *   software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/types.h>

#include <string.h>

#include "log.h"
#include "qdevice-net-algo-2nodelms.h"
#include "qdevice-net-send.h"
#include "qdevice-net-cast-vote-timer.h"

int
qdevice_net_algo_2nodelms_init(struct qdevice_net_instance *instance)
{

	return (0);
}

int
qdevice_net_algo_2nodelms_connected(struct qdevice_net_instance *instance, enum tlv_heuristics *heuristics,
    int *send_config_node_list, int *send_membership_node_list, int *send_quorum_node_list, enum tlv_vote *vote)
{

	return (0);
}

int
qdevice_net_algo_2nodelms_config_node_list_changed(struct qdevice_net_instance *instance,
    const struct node_list *nlist, int config_version_set, uint64_t config_version,
    int *send_node_list, enum tlv_vote *vote)
{

	return (0);
}

int
qdevice_net_algo_2nodelms_votequorum_node_list_notify(struct qdevice_net_instance *instance,
    const struct tlv_ring_id *ring_id, uint32_t node_list_entries, uint32_t node_list[],
    int *pause_cast_vote_timer, enum tlv_vote *vote)
{

	return (0);
}

int
qdevice_net_algo_2nodelms_votequorum_node_list_heuristics_notify(struct qdevice_net_instance *instance,
    const struct tlv_ring_id *ring_id, uint32_t node_list_entries, uint32_t node_list[],
    int *send_node_list, enum tlv_vote *vote, enum tlv_heuristics *heuristics)
{

	return (0);
}

int
qdevice_net_algo_2nodelms_votequorum_quorum_notify(struct qdevice_net_instance *instance,
    uint32_t quorate, uint32_t node_list_entries, votequorum_node_t node_list[], int *send_node_list,
    enum tlv_vote *vote)
{

	return (0);
}

int
qdevice_net_algo_2nodelms_votequorum_expected_votes_notify(struct qdevice_net_instance *instance,
    uint32_t expected_votes, enum tlv_vote *vote)
{

	return (0);
}

int
qdevice_net_algo_2nodelms_config_node_list_reply_received(struct qdevice_net_instance *instance,
    uint32_t seq_number, int initial, const struct tlv_ring_id *ring_id, int ring_id_is_valid, enum tlv_vote *vote)
{

	if (!ring_id_is_valid) {
		*vote = TLV_VOTE_NO_CHANGE;
	}

	return (0);
}

int
qdevice_net_algo_2nodelms_membership_node_list_reply_received(struct qdevice_net_instance *instance,
    uint32_t seq_number, const struct tlv_ring_id *ring_id, int ring_id_is_valid,
    enum tlv_vote *vote)
{

	if (!ring_id_is_valid) {
		*vote = TLV_VOTE_NO_CHANGE;
	}

	return (0);
}

int
qdevice_net_algo_2nodelms_quorum_node_list_reply_received(struct qdevice_net_instance *instance,
    uint32_t seq_number, const struct tlv_ring_id *ring_id, int ring_id_is_valid, enum tlv_vote *vote)
{

	if (!ring_id_is_valid) {
		*vote = TLV_VOTE_NO_CHANGE;
	}

	return (0);
}

int
qdevice_net_algo_2nodelms_ask_for_vote_reply_received(struct qdevice_net_instance *instance,
    uint32_t seq_number, const struct tlv_ring_id *ring_id, int ring_id_is_valid, enum tlv_vote *vote)
{

	if (!ring_id_is_valid) {
		*vote = TLV_VOTE_NO_CHANGE;
	}

	return (0);
}

int
qdevice_net_algo_2nodelms_vote_info_received(struct qdevice_net_instance *instance,
    uint32_t seq_number, const struct tlv_ring_id *ring_id, int ring_id_is_valid, enum tlv_vote *vote)
{

	if (!ring_id_is_valid) {
		*vote = TLV_VOTE_NO_CHANGE;
	}

	return (0);
}

int
qdevice_net_algo_2nodelms_echo_reply_received(struct qdevice_net_instance *instance,
    uint32_t seq_number, int is_expected_seq_number)
{

	return (is_expected_seq_number ? 0 : -1);
}

int
qdevice_net_algo_2nodelms_echo_reply_not_received(struct qdevice_net_instance *instance)
{

	return (-1);
}

int
qdevice_net_algo_2nodelms_heuristics_change(struct qdevice_net_instance *instance,
    enum tlv_heuristics *heuristics, int *send_msg, enum tlv_vote *vote)
{

	return (0);
}

int
qdevice_net_algo_2nodelms_heuristics_change_reply_received(struct qdevice_net_instance *instance,
    uint32_t seq_number, const struct tlv_ring_id *ring_id, int ring_id_is_valid,
    enum tlv_heuristics heuristics, enum tlv_vote *vote)
{

	if (!ring_id_is_valid) {
		*vote = TLV_VOTE_NO_CHANGE;
	}

	return (0);
}

int
qdevice_net_algo_2nodelms_disconnected(struct qdevice_net_instance *instance,
    enum qdevice_net_disconnect_reason disconnect_reason, int *try_reconnect, enum tlv_vote *vote)
{

	return (0);
}

void
qdevice_net_algo_2nodelms_destroy(struct qdevice_net_instance *instance)
{

}

static struct qdevice_net_algorithm qdevice_net_algo_2nodelms = {
	.init					= qdevice_net_algo_2nodelms_init,
	.connected				= qdevice_net_algo_2nodelms_connected,
	.config_node_list_changed		= qdevice_net_algo_2nodelms_config_node_list_changed,
	.votequorum_node_list_notify		= qdevice_net_algo_2nodelms_votequorum_node_list_notify,
	.votequorum_node_list_heuristics_notify	= qdevice_net_algo_2nodelms_votequorum_node_list_heuristics_notify,
	.votequorum_quorum_notify		= qdevice_net_algo_2nodelms_votequorum_quorum_notify,
	.votequorum_expected_votes_notify	= qdevice_net_algo_2nodelms_votequorum_expected_votes_notify,
	.config_node_list_reply_received	= qdevice_net_algo_2nodelms_config_node_list_reply_received,
	.membership_node_list_reply_received	= qdevice_net_algo_2nodelms_membership_node_list_reply_received,
	.quorum_node_list_reply_received	= qdevice_net_algo_2nodelms_quorum_node_list_reply_received,
	.ask_for_vote_reply_received		= qdevice_net_algo_2nodelms_ask_for_vote_reply_received,
	.vote_info_received			= qdevice_net_algo_2nodelms_vote_info_received,
	.echo_reply_received			= qdevice_net_algo_2nodelms_echo_reply_received,
	.echo_reply_not_received		= qdevice_net_algo_2nodelms_echo_reply_not_received,
	.heuristics_change			= qdevice_net_algo_2nodelms_heuristics_change,
	.heuristics_change_reply_received	= qdevice_net_algo_2nodelms_heuristics_change_reply_received,
	.disconnected				= qdevice_net_algo_2nodelms_disconnected,
	.destroy				= qdevice_net_algo_2nodelms_destroy,
};

int
qdevice_net_algo_2nodelms_register(void)
{
	return (qdevice_net_algorithm_register(TLV_DECISION_ALGORITHM_TYPE_2NODELMS, &qdevice_net_algo_2nodelms));
}