158 lines
3.6 KiB
C
158 lines
3.6 KiB
C
/*
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* vrrp_net.h
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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_NET_
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#define _VRRP_NET_
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#include <stdint.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <net/if.h>
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#include <net/ethernet.h>
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#include <linux/if_packet.h>
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#include "vrrp_ipx.h"
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#include "vrrp_rfc.h"
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#include "list.h"
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/* from vrrp.h */
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struct vrrp;
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typedef enum _vrrp_event_type vrrp_event_t;
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/**
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* constants
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*/
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#define IPPROTO_VRRP 112
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#define VIP_MAX 255
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#define VRRP_AUTH_SIZE 2*sizeof(uint32_t)
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#define VRRP_VIPMAX_SIZE VIP_MAX * sizeof(uint32_t)
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#define VRRP_PKTHDR_SIZE sizeof(struct vrrphdr)
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#define VRRP_PKT_MINSIZE VRRP_PKTHDR_SIZE + sizeof(uint32_t)
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#define VRRP_PKT_MAXSIZE VRRP_PKTHDR_SIZE + VRRP_VIPMAX_SIZE + VRRP_AUTH_SIZE
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#define IPHDR_SIZE sizeof(struct iphdr)
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/**
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* struct vrrp_ip - VRRP IPs addresses
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*/
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struct vrrp_ip {
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union vrrp_ipx_addr ipx;
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uint8_t netmask;
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struct list_head iplist;
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/* internal buffer for topology update pkt */
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struct iovec __topology[3];
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};
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/**
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* struct vrrp_if - VRRP interface
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*/
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struct vrrp_if {
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char *ifname;
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int mtu;
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union vrrp_ipx_addr ipx;
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};
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/**
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* struct vrrp_recv - VRRP buffer recv
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*/
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struct vrrp_recv {
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union vrrp_ipx_addr s_ipx;
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union vrrp_ipx_addr d_ipx;
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struct vrrp_ipx_header header;
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struct vrrphdr adv;
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};
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#define ip_addr ipx.addr
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#define ip_saddr s_ipx.addr
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#define ip_daddr d_ipx.addr
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#ifdef HAVE_IP6
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#define ip_addr6 ipx.addr6
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#define ip_saddr6 s_ipx.addr6
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#define ip_daddr6 d_ipx.addr6
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#endif /* HAVE_IP6 */
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/**
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* struct vrrp_net - VRRP net structure
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*/
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struct vrrp_net {
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/* VRRP id */
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uint8_t vrid;
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/* VRRP interface */
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struct vrrp_if vif;
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/* list of VRRP IP adresses */
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struct list_head vip_list;
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/* family */
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int family;
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/* count IP addresses */
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uint8_t naddr;
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/* listen VRRP socket */
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int socket;
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/* xmit VRRP socket */
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int xmit;
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/* buffer for received pkt */
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struct vrrp_recv __pkt;
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/* buffer for advertisement pkt */
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struct iovec __adv[3];
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/* family helper functions */
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struct vrrp_ipx *ipx_helper;
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};
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#define set_sockopt ipx_helper->setsockopt
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#define join_mgroup ipx_helper->mgroup
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#define vip_compare ipx_helper->viplist_cmp
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#define ipx_cmp ipx_helper->cmp
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#define pkt_receive ipx_helper->recv
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#define adv_checksum ipx_helper->chksum
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#define adv_getsize ipx_helper->getsize
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#define ipx_to_str ipx_helper->ipx_ntop
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#define str_to_ipx ipx_helper->ipx_pton
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/*
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* funcs
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*/
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void vrrp_net_init(struct vrrp_net *vnet);
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void vrrp_net_cleanup(struct vrrp_net *vnet);
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int vrrp_net_socket(struct vrrp_net *vnet);
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int vrrp_net_socket_xmit(struct vrrp_net *vnet);
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int vrrp_net_vif_getaddr(struct vrrp_net *vnet);
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int vrrp_net_vif_mtu(struct vrrp_net *vnet);
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int vrrp_net_vip_set(struct vrrp_net *vnet, const char *ip);
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vrrp_event_t vrrp_net_recv(struct vrrp_net *vnet, const struct vrrp *vrrp);
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int vrrp_net_send(const struct vrrp_net *vnet, struct iovec *iov, size_t len);
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#endif /* _VRRP_NET_ */
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