112 lines
2.7 KiB
C
112 lines
2.7 KiB
C
/**
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* vrrp_ipx.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_IPX_
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#define _VRRP_IPX_
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/* from vrrp_net.h */
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struct vrrp_net;
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struct vrrphdr;
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struct vrrp_recv;
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/**
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* struct vrrp_ipx_header - IPvX header informations from received adv pkt
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*/
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struct vrrp_ipx_header {
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int len;
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int proto;
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int totlen;
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int ttl;
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};
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/**
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* union vrrp_ipx_addr - IPv4 and IPv6 addr struct
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*/
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union vrrp_ipx_addr {
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struct in_addr addr;
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#ifdef HAVE_IP6
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struct in6_addr addr6;
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#endif
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};
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/**
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* struct vrrp_ipx - Helper functions
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*/
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struct vrrp_ipx {
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/* AF_INET or AF6_INET */
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int family;
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/* setsockopt() - socket options */
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int (*setsockopt) (int, int);
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/* mgroup() - join IPvX VRRP multicast group */
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int (*mgroup) (struct vrrp_net *);
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/* cmp() - Compare two IPvX address */
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int (*cmp) (union vrrp_ipx_addr *, union vrrp_ipx_addr *);
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/* recv() - Read received pkt and fetch/store information
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* in struct vrrp_recv */
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int (*recv) (int, struct vrrp_recv *, unsigned char *, ssize_t, int *);
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/* getsize() - get size of IPvX VRRP advertisement pkt */
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int (*getsize) (const struct vrrp_net *);
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/* viplist_cmp() - compare VRRP Virtual IPvX list */
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int (*viplist_cmp) (struct vrrp_net *, struct vrrphdr *);
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/* chksum() - compute IPvX checksum while building
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* advertisement packet */
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uint16_t(*chksum) (const struct vrrp_net *, struct vrrphdr *,
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union vrrp_ipx_addr *, union vrrp_ipx_addr *);
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/* ipx_ntop() - call ntop() on IPvX addr */
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const char *(*ipx_ntop) (union vrrp_ipx_addr *, char *);
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/* ipx_pton() - call pton() on IPvX addr */
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int (*ipx_pton) (union vrrp_ipx_addr *, const char *);
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};
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/* IP4 and IP6 internal modules */
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extern struct vrrp_ipx VRRP_IP4; /* IPv4 module */
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#ifdef HAVE_IP6
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extern struct vrrp_ipx VRRP_IP6; /* IPv6 module */
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#endif
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/**
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* vrrp_ipx_set() - Set l3 helper for vrrp_net
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*/
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static inline struct vrrp_ipx *vrrp_ipx_set(int family)
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{
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if (family == AF_INET) {
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return &VRRP_IP4;
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}
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#ifdef HAVE_IP6
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if (family == AF_INET6) {
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return &VRRP_IP6;
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}
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#endif
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return NULL;
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}
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#endif /* _VRRP_IPX_ */
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