root/net/tcp/arp.h

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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 /* $Id: arp.h,v 0.8.4.3 1992/12/03 19:54:12 bir7 Exp $ */
  23 /* $Log: arp.h,v $
  24  * Revision 0.8.4.3  1992/12/03  19:54:12  bir7
  25  * Added paranoid queue checking.
  26  *
  27  * Revision 0.8.4.2  1992/11/15  14:55:30  bir7
  28  * make arp_q global so sock.c can mess with it.
  29  *
  30  * Revision 0.8.4.1  1992/11/10  00:17:18  bir7
  31  * version change only.
  32  *
  33  * Revision 0.8.3.2  1992/11/10  00:14:47  bir7
  34  * Changed malloc to kmalloc and added $iId$ and $Log: arp.h,v $
  35  * Revision 0.8.4.3  1992/12/03  19:54:12  bir7
  36  * Added paranoid queue checking.
  37  *
  38  * Revision 0.8.4.2  1992/11/15  14:55:30  bir7
  39  * make arp_q global so sock.c can mess with it.
  40  *
  41  * Revision 0.8.4.1  1992/11/10  00:17:18  bir7
  42  * version change only.
  43  *.
  44  * */
  45 
  46 #ifndef _TCP_ARP_H
  47 #define _TCP_ARP_H
  48 
  49 struct arp
  50 {
  51   unsigned short hrd;
  52   unsigned short pro;
  53   unsigned char hlen;
  54   unsigned char plen;
  55   unsigned short op;
  56 };
  57 
  58 
  59 struct arp_table
  60 {
  61   struct arp_table *next;
  62   unsigned long last_used;
  63   unsigned long ip;
  64   unsigned char hlen;
  65   unsigned char hard[MAX_ADDR_LEN];
  66 };
  67 
  68 struct sk_buff *arp_q;
  69 
  70 int arp_rcv(struct sk_buff *, struct device *, struct packet_type *);
  71 void arp_snd (unsigned long, struct device *, unsigned long);
  72 int arp_find (unsigned char *, unsigned long, struct device *dev,
  73               unsigned long);
  74 void arp_add_broad (unsigned long, struct device *dev);
  75 void arp_destroy (unsigned long);
  76 void arp_add (unsigned long addr, unsigned char *haddr, struct device *dev);
  77 void arp_queue (struct sk_buff *skb);
  78 
  79 #define ARP_TABLE_SIZE 16
  80 #define ARP_IP_PROT ETHERTYPE_IP
  81 #define ARP_REQUEST 1
  82 #define ARP_REPLY 2
  83 #define ARP_TIMEOUT 8640000 /* about 8 hours. */
  84 #define ARP_RES_TIME 250 /* 2.5 seconds. */
  85 
  86 #define ARP_QUEUE_MAGIC 0x0432447A
  87 
  88 #endif

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