projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| b688fc87 WJ |
1 | /* |
| 2 | * Copyright (c) 1982, 1986 Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. All advertising materials mentioning features or use of this software | |
| 14 | * must display the following acknowledgement: | |
| 15 | * This product includes software developed by the University of | |
| 16 | * California, Berkeley and its contributors. | |
| 17 | * 4. Neither the name of the University nor the names of its contributors | |
| 18 | * may be used to endorse or promote products derived from this software | |
| 19 | * without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 31 | * SUCH DAMAGE. | |
| 32 | * | |
| 33 | * @(#)if_ether.h 7.5 (Berkeley) 6/28/90 | |
| 34 | */ | |
| 35 | ||
| 36 | /* | |
| 37 | * Structure of a 10Mb/s Ethernet header. | |
| 38 | */ | |
| 39 | struct ether_header { | |
| 40 | u_char ether_dhost[6]; | |
| 41 | u_char ether_shost[6]; | |
| 42 | u_short ether_type; | |
| 43 | }; | |
| 44 | ||
| 45 | #define ETHERTYPE_PUP 0x0200 /* PUP protocol */ | |
| 46 | #define ETHERTYPE_IP 0x0800 /* IP protocol */ | |
| 47 | #define ETHERTYPE_ARP 0x0806 /* Addr. resolution protocol */ | |
| 48 | ||
| 49 | /* | |
| 50 | * The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have | |
| 51 | * (type-ETHERTYPE_TRAIL)*512 bytes of data followed | |
| 52 | * by an ETHER type (as given above) and then the (variable-length) header. | |
| 53 | */ | |
| 54 | #define ETHERTYPE_TRAIL 0x1000 /* Trailer packet */ | |
| 55 | #define ETHERTYPE_NTRAILER 16 | |
| 56 | ||
| 57 | #define ETHERMTU 1500 | |
| 58 | #define ETHERMIN (60-14) | |
| 59 | ||
| 60 | /* | |
| 61 | * Ethernet Address Resolution Protocol. | |
| 62 | * | |
| 63 | * See RFC 826 for protocol description. Structure below is adapted | |
| 64 | * to resolving internet addresses. Field names used correspond to | |
| 65 | * RFC 826. | |
| 66 | */ | |
| 67 | struct ether_arp { | |
| 68 | struct arphdr ea_hdr; /* fixed-size header */ | |
| 69 | u_char arp_sha[6]; /* sender hardware address */ | |
| 70 | u_char arp_spa[4]; /* sender protocol address */ | |
| 71 | u_char arp_tha[6]; /* target hardware address */ | |
| 72 | u_char arp_tpa[4]; /* target protocol address */ | |
| 73 | }; | |
| 74 | #define arp_hrd ea_hdr.ar_hrd | |
| 75 | #define arp_pro ea_hdr.ar_pro | |
| 76 | #define arp_hln ea_hdr.ar_hln | |
| 77 | #define arp_pln ea_hdr.ar_pln | |
| 78 | #define arp_op ea_hdr.ar_op | |
| 79 | ||
| 80 | ||
| 81 | /* | |
| 82 | * Structure shared between the ethernet driver modules and | |
| 83 | * the address resolution code. For example, each ec_softc or il_softc | |
| 84 | * begins with this structure. | |
| 85 | */ | |
| 86 | struct arpcom { | |
| 87 | struct ifnet ac_if; /* network-visible interface */ | |
| 88 | u_char ac_enaddr[6]; /* ethernet hardware address */ | |
| 89 | struct in_addr ac_ipaddr; /* copy of ip address- XXX */ | |
| 90 | }; | |
| 91 | ||
| 92 | /* | |
| 93 | * Internet to ethernet address resolution table. | |
| 94 | */ | |
| 95 | struct arptab { | |
| 96 | struct in_addr at_iaddr; /* internet address */ | |
| 97 | u_char at_enaddr[6]; /* ethernet address */ | |
| 98 | u_char at_timer; /* minutes since last reference */ | |
| 99 | u_char at_flags; /* flags */ | |
| 100 | struct mbuf *at_hold; /* last packet until resolved/timeout */ | |
| 101 | }; | |
| 102 | ||
| 103 | #ifdef KERNEL | |
| 104 | u_char etherbroadcastaddr[6]; | |
| 105 | struct arptab *arptnew(); | |
| 106 | int ether_output(), ether_input(); | |
| 107 | char *ether_sprintf(); | |
| 108 | #endif |