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/*
* VRRPD packet crafting
* Copyright (C) 2018 Cumulus Networks, Inc.
* Quentin Young
*
* 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 2 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; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <zebra.h>
#include "memory.h"
#include "ipaddr.h"
#include "prefix.h"
#define VRRP_VERSION 3
#define VRRP_TYPE_ADVERTISEMENT 1
struct vrrp_pkt {
uint8_t version : 4;
uint8_t type : 4;
uint8_t vrid;
uint8_t priority;
uint8_t num_ip;
uint16_t rsvd : 4;
uint16_t max_adver_int : 12;
uint16_t cksum;
union {
struct in_addr v4;
struct in6_addr v6;
} addrs[];
} __attribute((packed, aligned(1)));
/*
* Builds a VRRP packet.
*/
struct vrrp_pkt *vrrp_pkt_build(uint8_t vrid, uint8_t prio,
uint16_t max_adver_int, bool v6, uint8_t numip,
void **ips);
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