109 lines
3.9 KiB
C
109 lines
3.9 KiB
C
|
/*
|
||
|
|
* Copyright (c) 1982, 1986 Regents of the University of California.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
* 3. All advertising materials mentioning features or use of this software
|
||
|
|
* must display the following acknowledgement:
|
||
|
|
* This product includes software developed by the University of
|
||
|
|
* California, Berkeley and its contributors.
|
||
|
|
* 4. Neither the name of the University nor the names of its contributors
|
||
|
|
* may be used to endorse or promote products derived from this software
|
||
|
|
* without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
|
* SUCH DAMAGE.
|
||
|
|
*
|
||
|
|
* @(#)if_ether.h 7.5 (Berkeley) 6/28/90
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Structure of a 10Mb/s Ethernet header.
|
||
|
|
*/
|
||
|
|
struct ether_header {
|
||
|
|
u_char ether_dhost[6];
|
||
|
|
u_char ether_shost[6];
|
||
|
|
u_short ether_type;
|
||
|
|
};
|
||
|
|
|
||
|
|
#define ETHERTYPE_PUP 0x0200 /* PUP protocol */
|
||
|
|
#define ETHERTYPE_IP 0x0800 /* IP protocol */
|
||
|
|
#define ETHERTYPE_ARP 0x0806 /* Addr. resolution protocol */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have
|
||
|
|
* (type-ETHERTYPE_TRAIL)*512 bytes of data followed
|
||
|
|
* by an ETHER type (as given above) and then the (variable-length) header.
|
||
|
|
*/
|
||
|
|
#define ETHERTYPE_TRAIL 0x1000 /* Trailer packet */
|
||
|
|
#define ETHERTYPE_NTRAILER 16
|
||
|
|
|
||
|
|
#define ETHERMTU 1500
|
||
|
|
#define ETHERMIN (60-14)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Ethernet Address Resolution Protocol.
|
||
|
|
*
|
||
|
|
* See RFC 826 for protocol description. Structure below is adapted
|
||
|
|
* to resolving internet addresses. Field names used correspond to
|
||
|
|
* RFC 826.
|
||
|
|
*/
|
||
|
|
struct ether_arp {
|
||
|
|
struct arphdr ea_hdr; /* fixed-size header */
|
||
|
|
u_char arp_sha[6]; /* sender hardware address */
|
||
|
|
u_char arp_spa[4]; /* sender protocol address */
|
||
|
|
u_char arp_tha[6]; /* target hardware address */
|
||
|
|
u_char arp_tpa[4]; /* target protocol address */
|
||
|
|
};
|
||
|
|
#define arp_hrd ea_hdr.ar_hrd
|
||
|
|
#define arp_pro ea_hdr.ar_pro
|
||
|
|
#define arp_hln ea_hdr.ar_hln
|
||
|
|
#define arp_pln ea_hdr.ar_pln
|
||
|
|
#define arp_op ea_hdr.ar_op
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Structure shared between the ethernet driver modules and
|
||
|
|
* the address resolution code. For example, each ec_softc or il_softc
|
||
|
|
* begins with this structure.
|
||
|
|
*/
|
||
|
|
struct arpcom {
|
||
|
|
struct ifnet ac_if; /* network-visible interface */
|
||
|
|
u_char ac_enaddr[6]; /* ethernet hardware address */
|
||
|
|
struct in_addr ac_ipaddr; /* copy of ip address- XXX */
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Internet to ethernet address resolution table.
|
||
|
|
*/
|
||
|
|
struct arptab {
|
||
|
|
struct in_addr at_iaddr; /* internet address */
|
||
|
|
u_char at_enaddr[6]; /* ethernet address */
|
||
|
|
u_char at_timer; /* minutes since last reference */
|
||
|
|
u_char at_flags; /* flags */
|
||
|
|
struct mbuf *at_hold; /* last packet until resolved/timeout */
|
||
|
|
};
|
||
|
|
|
||
|
|
#ifdef KERNEL
|
||
|
|
u_char etherbroadcastaddr[6];
|
||
|
|
struct arptab *arptnew();
|
||
|
|
int ether_output(), ether_input();
|
||
|
|
char *ether_sprintf();
|
||
|
|
#endif
|