root/net/tcp/arp.h

/* */

INCLUDED FROM

   1 /* arp.h */
   2 /*
   3     Copyright (C) 1992  Ross Biro
   4 
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2, or (at your option)
   8     any later version.
   9 
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14 
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 
  18 
  19     The Author may be reached as bir7@leland.stanford.edu or
  20     C/O Department of Mathematics; Stanford University; Stanford, CA 94305
  21 */
  22 #ifndef _TCP_ARP_H
  23 #define _TCP_ARP_H
  24 
  25 struct arp
  26 {
  27   unsigned short hrd;
  28   unsigned short pro;
  29   unsigned char hlen;
  30   unsigned char plen;
  31   unsigned short op;
  32 };
  33 
  34 
  35 struct arp_table
  36 {
  37   struct arp_table *next;
  38   unsigned long last_used;
  39   unsigned long ip;
  40   unsigned char hlen;
  41   unsigned char hard[MAX_ADDR_LEN];
  42 };
  43 
  44 
  45 
  46 int arp_rcv(struct sk_buff *, struct device *, struct packet_type *);
  47 void arp_snd (unsigned long, struct device *, unsigned long);
  48 int arp_find (unsigned char *, unsigned long, struct device *dev,
  49               unsigned long);
  50 void arp_add_broad (unsigned long, struct device *dev);
  51 void arp_destroy (unsigned long);
  52 void arp_add (unsigned long addr, unsigned char *haddr, struct device *dev);
  53 void arp_queue (struct sk_buff *skb);
  54 
  55 #define ARP_TABLE_SIZE 16
  56 #define ARP_IP_PROT ETHERTYPE_IP
  57 #define ARP_REQUEST 1
  58 #define ARP_REPLY 2
  59 #define ARP_TIMEOUT 8640000 /* about 8 hours. */
  60 #define ARP_RES_TIME 250 /* 2.5 seconds. */
  61 #endif

/* */