[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / net / if_arp.h

/* Definitions for Address Resolution Protocol.
   Copyright (C) 1997 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

/* Based on the 4.4BSD and Linux version of this file.  */

#ifndef _NET_IF_ARP_H

#define _NET_IF_ARP_H 1
#include <sys/cdefs.h>

#include <sys/types.h>

__BEGIN_DECLS

/* This structure defines an ethernet arp header.  */

/* ARP protocol opcodes. */
#define	ARPOP_REQUEST	1		/* ARP request.  */
#define	ARPOP_REPLY	2		/* ARP reply.  */
#define	ARPOP_RREQUEST	3		/* RARP request.  */
#define	ARPOP_RREPLY	4		/* RARP reply.  */

/* See RFC 826 for protocol description.  ARP packets are variable
   in size; the arphdr structure defines the fixed-length portion.
   Protocol type values are the same as those for 10 Mb/s Ethernet.
   It is followed by the variable-sized fields ar_sha, arp_spa,
   arp_tha and arp_tpa in that order, according to the lengths
   specified.  Field names used correspond to RFC 826.  */

struct arphdr
  {
    unsigned short int ar_hrd;		/* Format of hardware address.  */
    unsigned short int ar_pro;		/* Format of protocol address.  */
    unsigned char ar_hln;		/* Length of hardware address.  */
    unsigned char ar_pln;		/* Length of protocol address.  */
    unsigned short int ar_op;		/* ARP opcode (command).  */
#if 0
    /* Ethernet looks like this : This bit is variable sized
       however...  */
    unsigned char __ar_sha[ETH_ALEN];	/* Sender hardware address.  */
    unsigned char __ar_sip[4];		/* Sender IP address.  */
    unsigned char __ar_tha[ETH_ALEN];	/* Target hardware address.  */
    unsigned char __ar_tip[4];		/* Target IP address.  */
#endif
  };


/* ARP protocol HARDWARE identifiers. */
#define ARPHRD_NETROM	0		/* From KA9Q: NET/ROM pseudo. */
#define ARPHRD_ETHER 	1		/* Ethernet 10Mbps.  */
#define	ARPHRD_EETHER	2		/* Experimental Ethernet.  */
#define	ARPHRD_AX25	3		/* AX.25 Level 2.  */
#define	ARPHRD_PRONET	4		/* PROnet token ring.  */
#define	ARPHRD_CHAOS	5		/* Chaosnet.  */
#define	ARPHRD_IEEE802	6		/* IEEE 802.2 Ethernet/TR/TB.  */
#define	ARPHRD_ARCNET	7		/* ARCnet.  */
#define	ARPHRD_APPLETLK	8		/* APPLEtalk.  */
#define ARPHRD_DLCI	15		/* Frame Relay DLCI.  */
#define ARPHRD_METRICOM	23		/* Metricom STRIP (new IANA id).  */

/* Dummy types for non ARP hardware */
#define ARPHRD_SLIP	256
#define ARPHRD_CSLIP	257
#define ARPHRD_SLIP6	258
#define ARPHRD_CSLIP6	259
#define ARPHRD_RSRVD	260		/* Notional KISS type.  */
#define ARPHRD_ADAPT	264
#define ARPHRD_ROSE	270
#define ARPHRD_X25	271		/* CCITT X.25.  */
#define ARPHRD_PPP	512

#define ARPHRD_TUNNEL	768		/* IPIP tunnel.  */
#define ARPHRD_TUNNEL6	769		/* IPIP6 tunnel.  */
#define ARPHRD_FRAD	770             /* Frame Relay Access Device.  */
#define ARPHRD_SKIP	771		/* SKIP vif.  */
#define ARPHRD_LOOPBACK	772		/* Loopback device.  */
#define ARPHRD_LOCALTLK 773		/* Localtalk device.  */
#define ARPHRD_FDDI	774		/* Fiber Distributed Data Interface. */
#define ARPHRD_BIF      775             /* AP1000 BIF.  */
#define ARPHRD_SIT	776		/* sit0 device - IPv6-in-IPv4.  */


/* ARP ioctl request.  */
struct arpreq
  {
    struct sockaddr arp_pa;		/* Protocol address.  */
    struct sockaddr arp_ha;		/* Hardware address.  */
    int arp_flags;			/* Flags.  */
    struct sockaddr arp_netmask;	/* Netmask (only for proxy arps).  */
    char arp_dev[16];
  };

struct arpreq_old
  {
    struct sockaddr arp_pa;		/* Protocol address.  */
    struct sockaddr arp_ha;		/* Hardware address.  */
    int arp_flags;			/* Flags.  */
    struct sockaddr arp_netmask;	/* Netmask (only for proxy arps).  */
  };

/* ARP Flag values.  */
#define ATF_COM		0x02		/* Completed entry (ha valid).  */
#define	ATF_PERM	0x04		/* Permanent entry.  */
#define	ATF_PUBL	0x08		/* Publish entry.  */
#define	ATF_USETRAILERS	0x10		/* Has requested trailers.  */
#define ATF_NETMASK     0x20            /* Want to use a netmask (only
					   for proxy entries).  */
#define ATF_DONTPUB	0x40		/* Don't answer this addresses.  */
#define ATF_MAGIC	0x80		/* Automatically added entry.  */


/* Support for the user space arp daemon, arpd.  */
#define ARPD_UPDATE	0x01
#define ARPD_LOOKUP	0x02
#define ARPD_FLUSH	0x03

struct arpd_request
  {
    unsigned short int req;		/* Request type.  */
    u_int32_t ip;			/* IP address of entry.  */
    unsigned long int dev;		/* Device entry is tied to.  */
    unsigned long int stamp;
    unsigned long int updated;
    unsigned char ha[MAX_ADDR_LEN];	/* Hardware address.  */
  };

__END_DECLS

#endif	/* net/if_arp.h */
Commit	Line	Data
fd26970f UD	1	/* Definitions for Address Resolution Protocol.
	2	Copyright (C) 1997 Free Software Foundation, Inc.
	3	This file is part of the GNU C Library.
	4	Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
	5
	6	The GNU C Library is free software; you can redistribute it and/or
	7	modify it under the terms of the GNU Library General Public License as
	8	published by the Free Software Foundation; either version 2 of the
	9	License, or (at your option) any later version.
	10
	11	The GNU C Library is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	Library General Public License for more details.
	15
	16	You should have received a copy of the GNU Library General Public
	17	License along with the GNU C Library; see the file COPYING.LIB. If not,
	18	write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	19	Boston, MA 02111-1307, USA. */
	20
	21	/* Based on the 4.4BSD and Linux version of this file. */
	22
	23	#ifndef _NET_IF_ARP_H
	24
	25	#define _NET_IF_ARP_H 1
	26	#include <sys/cdefs.h>
	27
	28	#include <sys/types.h>
	29
	30	__BEGIN_DECLS
	31
	32	/* This structure defines an ethernet arp header. */
	33
	34	/* ARP protocol opcodes. */
	35	#define ARPOP_REQUEST 1 /* ARP request. */
	36	#define ARPOP_REPLY 2 /* ARP reply. */
	37	#define ARPOP_RREQUEST 3 /* RARP request. */
	38	#define ARPOP_RREPLY 4 /* RARP reply. */
	39
	40	/* See RFC 826 for protocol description. ARP packets are variable
	41	in size; the arphdr structure defines the fixed-length portion.
	42	Protocol type values are the same as those for 10 Mb/s Ethernet.
	43	It is followed by the variable-sized fields ar_sha, arp_spa,
	44	arp_tha and arp_tpa in that order, according to the lengths
	45	specified. Field names used correspond to RFC 826. */
	46
	47	struct arphdr
	48	{
	49	unsigned short int ar_hrd; /* Format of hardware address. */
	50	unsigned short int ar_pro; /* Format of protocol address. */
	51	unsigned char ar_hln; /* Length of hardware address. */
	52	unsigned char ar_pln; /* Length of protocol address. */
	53	unsigned short int ar_op; /* ARP opcode (command). */
	54	#if 0
	55	/* Ethernet looks like this : This bit is variable sized
	56	however... */
	57	unsigned char __ar_sha[ETH_ALEN]; /* Sender hardware address. */
	58	unsigned char __ar_sip[4]; /* Sender IP address. */
	59	unsigned char __ar_tha[ETH_ALEN]; /* Target hardware address. */
	60	unsigned char __ar_tip[4]; /* Target IP address. */
	61	#endif
	62	};
	63
	64
65	/* ARP protocol HARDWARE identifiers. */
66	#define ARPHRD_NETROM 0 /* From KA9Q: NET/ROM pseudo. */
67	#define ARPHRD_ETHER 1 /* Ethernet 10Mbps. */
68	#define ARPHRD_EETHER 2 /* Experimental Ethernet. */
69	#define ARPHRD_AX25 3 /* AX.25 Level 2. */
70	#define ARPHRD_PRONET 4 /* PROnet token ring. */
71	#define ARPHRD_CHAOS 5 /* Chaosnet. */
72	#define ARPHRD_IEEE802 6 /* IEEE 802.2 Ethernet/TR/TB. */
73	#define ARPHRD_ARCNET 7 /* ARCnet. */
74	#define ARPHRD_APPLETLK 8 /* APPLEtalk. */
75	#define ARPHRD_DLCI 15 /* Frame Relay DLCI. */
76	#define ARPHRD_METRICOM 23 /* Metricom STRIP (new IANA id). */
77
78	/* Dummy types for non ARP hardware */
79	#define ARPHRD_SLIP 256
80	#define ARPHRD_CSLIP 257
81	#define ARPHRD_SLIP6 258
82	#define ARPHRD_CSLIP6 259
83	#define ARPHRD_RSRVD 260 /* Notional KISS type. */
84	#define ARPHRD_ADAPT 264
85	#define ARPHRD_ROSE 270
86	#define ARPHRD_X25 271 /* CCITT X.25. */
87	#define ARPHRD_PPP 512
88
89	#define ARPHRD_TUNNEL 768 /* IPIP tunnel. */
90	#define ARPHRD_TUNNEL6 769 /* IPIP6 tunnel. */
91	#define ARPHRD_FRAD 770 /* Frame Relay Access Device. */
92	#define ARPHRD_SKIP 771 /* SKIP vif. */
93	#define ARPHRD_LOOPBACK 772 /* Loopback device. */
94	#define ARPHRD_LOCALTLK 773 /* Localtalk device. */
95	#define ARPHRD_FDDI 774 /* Fiber Distributed Data Interface. */
96	#define ARPHRD_BIF 775 /* AP1000 BIF. */
97	#define ARPHRD_SIT 776 /* sit0 device - IPv6-in-IPv4. */
98
99
100	/* ARP ioctl request. */
101	struct arpreq
102	{
103	struct sockaddr arp_pa; /* Protocol address. */
104	struct sockaddr arp_ha; /* Hardware address. */
105	int arp_flags; /* Flags. */
106	struct sockaddr arp_netmask; /* Netmask (only for proxy arps). */
107	char arp_dev[16];
108	};
109
110	struct arpreq_old
111	{
112	struct sockaddr arp_pa; /* Protocol address. */
113	struct sockaddr arp_ha; /* Hardware address. */
114	int arp_flags; /* Flags. */
115	struct sockaddr arp_netmask; /* Netmask (only for proxy arps). */
116	};
117
118	/* ARP Flag values. */
119	#define ATF_COM 0x02 /* Completed entry (ha valid). */
120	#define ATF_PERM 0x04 /* Permanent entry. */
121	#define ATF_PUBL 0x08 /* Publish entry. */
122	#define ATF_USETRAILERS 0x10 /* Has requested trailers. */
123	#define ATF_NETMASK 0x20 /* Want to use a netmask (only
124	for proxy entries). */
125	#define ATF_DONTPUB 0x40 /* Don't answer this addresses. */
126	#define ATF_MAGIC 0x80 /* Automatically added entry. */
127
128
129	/* Support for the user space arp daemon, arpd. */
130	#define ARPD_UPDATE 0x01
131	#define ARPD_LOOKUP 0x02
132	#define ARPD_FLUSH 0x03
133
134	struct arpd_request
135	{
136	unsigned short int req; /* Request type. */
137	u_int32_t ip; /* IP address of entry. */
138	unsigned long int dev; /* Device entry is tied to. */
139	unsigned long int stamp;
140	unsigned long int updated;
141	unsigned char ha[MAX_ADDR_LEN]; /* Hardware address. */
142	};
143
144	__END_DECLS
145
146	#endif /* net/if_arp.h */