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ef4cc1ebff
Pick up some smartness from keepalived. Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
/*
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* VRRPD packet crafting
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* Copyright (C) 2018 Cumulus Networks, Inc.
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* Quentin Young
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <zebra.h>
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#include "memory.h"
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#include "ipaddr.h"
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#include "vrrp_packet.h"
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/*
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* Builds a VRRP packet.
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*/
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struct vrrp_pkt *vrrp_pkt_build(uint8_t vrid, uint8_t prio,
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uint16_t max_adver_int, bool v6, uint8_t numip,
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void **ips)
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{
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size_t addrsz = v6 ? sizeof(struct in6_addr) : sizeof(struct in_addr);
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struct vrrp_pkt *pkt =
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XCALLOC(MTYPE_TMP, sizeof(struct vrrp_pkt) + addrsz * numip);
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pkt->hdr.version = VRRP_VERSION;
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pkt->hdr.type = VRRP_TYPE_ADVERTISEMENT;
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pkt->hdr.vrid = vrid;
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pkt->hdr.priority = prio;
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pkt->hdr.v3.rsvd = 0;
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pkt->hdr.v3.adver_int = max_adver_int;
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for (uint8_t i = 0; i < numip; i++)
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memcpy(&pkt->addrs[i].v4, ips[i], addrsz);
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/* FIXME */
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pkt->hdr.chksum = 0;
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return pkt;
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}
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