lib/ip.h

   1 /*
   2  *      BIRD Internet Routing Daemon -- The Internet Protocol
   3  *
   4  *      (c) 1998 Martin Mares <mj@ucw.cz>
   5  *
   6  *      Can be freely distributed and used under the terms of the GNU GPL.
   7  */
   8
   9 #ifndef _BIRD_IP_H_
  10 #define _BIRD_IP_H_
  11
  12 #ifndef IPV6
  13 #include "ipv4.h"
  14 #else
  15 #include "ipv6.h"
  16 #endif
  17
  18 #define ipa_in_net(x,n,p) (!ipa_nonzero(ipa_and(ipa_xor((n),(x)),ipa_mkmask(p))))
  19
  20 /*
  21  *      ip_classify() returns either a negative number for invalid addresses
  22  *      or scope OR'ed together with address type.
  23  */
  24
  25 #define IADDR_INVALID           -1
  26 #define IADDR_SCOPE_MASK        0xfff
  27 #define IADDR_HOST              0x1000
  28 #define IADDR_BROADCAST         0x2000
  29 #define IADDR_MULTICAST         0x4000
  30
  31 /*
  32  *      Address scope
  33  */
  34
  35 #define SCOPE_HOST 0
  36 #define SCOPE_LINK 1
  37 #define SCOPE_SITE 2
  38 #define SCOPE_ORGANIZATION 3
  39 #define SCOPE_UNIVERSE 4
  40
  41 char *ip_scope_text(unsigned);
  42
  43 /*
  44  *      Network prefixes
  45  */
  46
  47 struct prefix {
  48   ip_addr addr;
  49   int len;
  50 };
  51
  52 #define ip_is_prefix(a,l) (!ipa_nonzero(ipa_and(a, ipa_not(ipa_mkmask(l)))))
  53
  54 /*
  55  *      Conversions between internal and string representation
  56  */
  57
  58 char *ip_ntop(ip_addr a, char *);
  59 char *ip_ntox(ip_addr a, char *);
  60 int ip_pton(char *a, ip_addr *o);
  61
  62 #endif