include/ethernetdb.h

   1 /*
   2 * This program is free software; you can redistribute it and/or modify
   3 * it under the terms of the GNU General Public License as published by
   4 * the Free Software Foundation; either version 2 of the License, or
   5 * (at your option) any later version.
   6 *
   7 * This program is distributed in the hope that it will be useful,
   8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10 * GNU General Public License for more details.
  11 *
  12 * You should have received a copy of the GNU General Public License
  13 * along with this program; if not, write to the Free Software
  14 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  15 */
  16
  17 /* All data returned by the network data base library are supplied in
  18    host order and returned in network order (suitable for use in
  19    system calls).  */
  20
  21 #ifndef _ETHERNETDB_H
  22 #define _ETHERNETDB_H   1
  23
  24 #include <features.h>
  25 #include <netinet/in.h>
  26 #include <stdint.h>
  27
  28 /* Absolute file name for network data base files.  */
  29 #ifndef _PATH_ETHERTYPES
  30 #define _PATH_ETHERTYPES        "/etc/ethertypes"
  31 #endif                          /* _PATH_ETHERTYPES */
  32
  33 struct ethertypeent {
  34         char *e_name;           /* Official ethernet type name.  */
  35         char **e_aliases;       /* Alias list.  */
  36         int e_ethertype;        /* Ethernet type number.  */
  37 };
  38
  39 /* Open ethertype data base files and mark them as staying open even
  40    after a later search if STAY_OPEN is non-zero.  */
  41 extern void setethertypeent(int __stay_open) __THROW;
  42
  43 /* Close ethertype data base files and clear `stay open' flag.  */
  44 extern void endethertypeent(void) __THROW;
  45
  46 /* Get next entry from ethertype data base file.  Open data base if
  47    necessary.  */
  48 extern struct ethertypeent *getethertypeent(void) __THROW;
  49
  50 /* Return entry from ethertype data base for network with NAME.  */
  51 extern struct ethertypeent *getethertypebyname(__const char *__name)
  52     __THROW;
  53
  54 /* Return entry from ethertype data base which number is PROTO.  */
  55 extern struct ethertypeent *getethertypebynumber(int __ethertype) __THROW;
  56
  57
  58 #endif                          /* ethernetdb.h */