97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
/*
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* vrrp_adv.h - VRRP advertisement
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*
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* Copyright (C) 2014 Arnaud Andre
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*
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* This file is part of uvrrpd.
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*
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* uvrrpd is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* uvrrpd is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with uvrrpd. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _VRRP_ADV_H_
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#define _VRRP_ADV_H_
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int vrrp_adv_init(struct vrrp_net *vnet, const struct vrrp *vrrp);
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void vrrp_adv_cleanup(struct vrrp_net *vnet);
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int vrrp_adv_send(struct vrrp_net *vnet);
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int vrrp_adv_send_zero(struct vrrp_net *vnet);
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uint16_t vrrp_adv_chksum(struct vrrp_net *vnet, struct vrrphdr *pkt,
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uint32_t saddr, uint32_t daddr);
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#ifdef HAVE_IP6
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uint16_t vrrp_adv_ip6_chksum(struct vrrp_net *vnet, struct vrrphdr *pkt,
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struct in6_addr *saddr, struct in6_addr *daddr);
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#endif /* HAVE_IP6 */
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/**
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* vrrp_adv_get_version() - get version_type from received adv pkt
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*/
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static inline int vrrp_adv_get_version(const struct vrrp_net *vnet)
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{
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return vnet->__pkt.adv.version_type;
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}
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/**
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* vrrp_adv_get_priority() - get priority from received adv priority
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*/
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static inline int vrrp_adv_get_priority(const struct vrrp_net *vnet)
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{
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return vnet->__pkt.adv.priority;
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}
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/**
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* vrrp_adv_set_priority() - set priority in emitted adv pkt
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*/
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static inline void vrrp_adv_set_priority(struct vrrp_net *vnet, uint8_t prio)
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{
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struct vrrphdr *pkt = vnet->__adv[2].iov_base;
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pkt->priority = prio;
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/* recompute chksum */
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pkt->chksum = vnet->adv_checksum(vnet, pkt, NULL, NULL);
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log_notice("vrid %d :: new prio %d applied", vnet->vrid, pkt->priority);
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}
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/**
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* vrrp_adv_addr_to_str() - return source ip from received adv pkt
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* in string format
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*/
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static inline const char *vrrp_adv_addr_to_str(struct vrrp_net *vnet, char *dst)
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{
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return vnet->ipx_to_str(&vnet->__pkt.s_ipx, dst);
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}
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/**
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* vrrp_adv_get_compare() - compare received adv pkt addr to local
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* primary address
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*/
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static inline int vrrp_adv_addr_cmp(struct vrrp_net *vnet)
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{
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return vnet->ipx_cmp(&vnet->__pkt.s_ipx, &vnet->vif.ipx);
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}
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/**
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* vrrp_adv_get_advint() - get adv interval
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*/
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static inline uint16_t vrrp_adv_get_advint(const struct vrrp_net *vnet)
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{
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if (vnet->__pkt.adv.version_type >> 4 == RFC5798)
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return ntohs(vnet->__pkt.adv.max_adv_int);
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return vnet->__pkt.adv.adv_int;
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}
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#endif /* _VRRP_ADV_H_ */
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