162 lines
4.4 KiB
C
Executable File
162 lines
4.4 KiB
C
Executable File
/*
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* Prefix structure.
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* Copyright (C) 1998 Kunihiro Ishiguro
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra 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
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* GNU Zebra is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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 GNU Zebra; see the file COPYING. If not, write to the Free
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* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#ifndef _ZEBRA_PREFIX_H
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#define _ZEBRA_PREFIX_H
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/* IPv4 and IPv6 unified prefix structure. */
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struct prefix
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{
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u_char family;
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u_char prefixlen;
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union
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{
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u_char prefix;
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struct in_addr prefix4;
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#ifdef HAVE_IPV6
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struct in6_addr prefix6;
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#endif /* HAVE_IPV6 */
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struct
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{
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struct in_addr id;
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struct in_addr adv_router;
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} lp;
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u_char val[8];
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} u __attribute__ ((aligned (8)));
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};
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/* IPv4 prefix structure. */
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struct prefix_ipv4
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{
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u_char family;
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u_char prefixlen;
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struct in_addr prefix __attribute__ ((aligned (8)));
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};
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/* IPv6 prefix structure. */
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#ifdef HAVE_IPV6
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struct prefix_ipv6
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{
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u_char family;
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u_char prefixlen;
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struct in6_addr prefix __attribute__ ((aligned (8)));
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};
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#endif /* HAVE_IPV6 */
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struct prefix_ls
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{
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u_char family;
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u_char prefixlen;
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struct in_addr id __attribute__ ((aligned (8)));
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struct in_addr adv_router;
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};
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/* Prefix for routing distinguisher. */
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struct prefix_rd
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{
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u_char family;
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u_char prefixlen;
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u_char val[8] __attribute__ ((aligned (8)));
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};
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#ifndef INET_ADDRSTRLEN
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#define INET_ADDRSTRLEN 16
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#endif /* INET_ADDRSTRLEN */
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#ifndef INET6_ADDRSTRLEN
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#define INET6_ADDRSTRLEN 46
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#endif /* INET6_ADDRSTRLEN */
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#ifndef INET6_BUFSIZ
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#define INET6_BUFSIZ 51
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#endif /* INET6_BUFSIZ */
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/* Max bit/byte length of IPv4 address. */
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#define IPV4_MAX_BYTELEN 4
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#define IPV4_MAX_BITLEN 32
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#define IPV4_MAX_PREFIXLEN 32
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#define IPV4_ADDR_CMP(D,S) memcmp ((D), (S), IPV4_MAX_BYTELEN)
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#define IPV4_ADDR_SAME(D,S) (memcmp ((D), (S), IPV4_MAX_BYTELEN) == 0)
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#define IPV4_ADDR_COPY(D,S) memcpy ((D), (S), IPV4_MAX_BYTELEN)
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#define IPV4_NET0(a) ((((u_int32_t) (a)) & 0xff000000) == 0x00000000)
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#define IPV4_NET127(a) ((((u_int32_t) (a)) & 0xff000000) == 0x7f000000)
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/* Max bit/byte length of IPv6 address. */
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#define IPV6_MAX_BYTELEN 16
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#define IPV6_MAX_BITLEN 128
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#define IPV6_MAX_PREFIXLEN 128
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#define IPV6_ADDR_CMP(D,S) memcmp ((D), (S), IPV6_MAX_BYTELEN)
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#define IPV6_ADDR_SAME(D,S) (memcmp ((D), (S), IPV6_MAX_BYTELEN) == 0)
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#define IPV6_ADDR_COPY(D,S) memcpy ((D), (S), IPV6_MAX_BYTELEN)
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/* Count prefix size from mask length */
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#define PSIZE(a) (((a) + 7) / (8))
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/* Prefix's family member. */
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#define PREFIX_FAMILY(p) ((p)->family)
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/* Prototypes. */
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int afi2family (int);
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int family2afi (int);
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int prefix2str (struct prefix *, char *, int);
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int str2prefix (char *, struct prefix *);
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struct prefix *prefix_new ();
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void prefix_free (struct prefix *p);
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struct prefix_ipv4 *prefix_ipv4_new ();
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void prefix_ipv4_free ();
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int str2prefix_ipv4 (char *, struct prefix_ipv4 *);
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void apply_mask_ipv4 (struct prefix_ipv4 *);
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int prefix_blen (struct prefix *);
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u_char ip_masklen (struct in_addr);
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int prefix_ipv4_any (struct prefix_ipv4 *);
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void masklen2ip (int, struct in_addr *);
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void apply_classful_mask_ipv4 (struct prefix_ipv4 *);
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char *prefix_family_str (struct prefix *p);
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struct prefix *sockunion2prefix ();
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struct prefix *sockunion2hostprefix ();
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#ifdef HAVE_IPV6
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struct prefix_ipv6 *prefix_ipv6_new ();
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void prefix_ipv6_free ();
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struct prefix *str2routev6 (char *);
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int str2prefix_ipv6 (char *str, struct prefix_ipv6 *p);
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void apply_mask_ipv6 (struct prefix_ipv6 *p);
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void str2in6_addr (char *str, struct in6_addr *addr);
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void masklen2ip6 (int masklen, struct in6_addr *netmask);
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int ip6_masklen (struct in6_addr netmask);
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#endif /* HAVE_IPV6 */
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void apply_mask (struct prefix *);
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int prefix_match (struct prefix *n, struct prefix *p);
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int prefix_same (struct prefix *, struct prefix *);
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int prefix_cmp (struct prefix *, struct prefix *);
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void prefix_copy (struct prefix *, struct prefix *);
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int all_digit (char *);
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int netmask_str2prefix_str (char *, char *, char *);
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#endif /* _ZEBRA_PREFIX_H */
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