Commit | Line | Data |
---|---|---|
187456a2 MK |
1 | /* if_ether.h 6.3 84/03/20 */ |
2 | ||
3 | /* | |
4 | * Ethernet address - 6 octets | |
5 | */ | |
6 | struct ether_addr { | |
7 | u_char ether_addr_octet[6]; | |
8 | }; | |
66b2ba82 SL |
9 | |
10 | /* | |
11 | * Structure of a 10Mb/s Ethernet header. | |
12 | */ | |
3fa8d9bb | 13 | struct ether_header { |
187456a2 MK |
14 | struct ether_addr ether_dhost; |
15 | struct ether_addr ether_shost; | |
3fa8d9bb | 16 | u_short ether_type; |
66b2ba82 SL |
17 | }; |
18 | ||
c24a8a35 | 19 | #define ETHERPUP_PUPTYPE 0x0200 /* PUP protocol */ |
b332a7f5 | 20 | #define ETHERPUP_IPTYPE 0x0800 /* IP protocol */ |
8ae4cebd | 21 | #define ETHERPUP_ARPTYPE 0x0806 /* Addr. resolution protocol */ |
66b2ba82 SL |
22 | |
23 | /* | |
3fa8d9bb SL |
24 | * The ETHERPUP_NTRAILER packet types starting at ETHERPUP_TRAIL have |
25 | * (type-ETHERPUP_TRAIL)*512 bytes of data followed | |
66b2ba82 SL |
26 | * by a PUP type (as given above) and then the (variable-length) header. |
27 | */ | |
b332a7f5 | 28 | #define ETHERPUP_TRAIL 0x1000 /* Trailer PUP */ |
3fa8d9bb SL |
29 | #define ETHERPUP_NTRAILER 16 |
30 | ||
31 | #define ETHERMTU 1500 | |
32 | #define ETHERMIN (60-14) | |
8ae4cebd | 33 | |
8ae4cebd SL |
34 | /* |
35 | * Ethernet Address Resolution Protocol. | |
36 | * | |
37 | * See RFC 826 for protocol description. Structure below is adapted | |
38 | * to resolving internet addresses. Field names used correspond to | |
39 | * RFC 826. | |
40 | */ | |
41 | struct ether_arp { | |
42 | u_short arp_hrd; /* format of hardware address */ | |
43 | #define ARPHRD_ETHER 1 /* ethernet hardware address */ | |
44 | u_short arp_pro; /* format of proto. address (ETHERPUP_IPTYPE) */ | |
45 | u_char arp_hln; /* length of hardware address (6) */ | |
46 | u_char arp_pln; /* length of protocol address (4) */ | |
47 | u_short arp_op; | |
48 | #define ARPOP_REQUEST 1 /* request to resolve address */ | |
49 | #define ARPOP_REPLY 2 /* response to previous request */ | |
187456a2 MK |
50 | u_char arp_xsha[6]; /* sender hardware address */ |
51 | u_char arp_xspa[4]; /* sender protocol address */ | |
52 | u_char arp_xtha[6]; /* target hardware address */ | |
53 | u_char arp_xtpa[4]; /* target protocol address */ | |
8ae4cebd | 54 | }; |
187456a2 MK |
55 | #define arp_sha(ea) (*(struct ether_addr *)(ea)->arp_xsha) |
56 | #define arp_spa(ea) (*(struct in_addr *)(ea)->arp_xspa) | |
57 | #define arp_tha(ea) (*(struct ether_addr *)(ea)->arp_xtha) | |
58 | #define arp_tpa(ea) (*(struct in_addr *)(ea)->arp_xtpa) | |
8ae4cebd | 59 | |
8ae4cebd SL |
60 | /* |
61 | * Structure shared between the ethernet driver modules and | |
62 | * the address resolution code. For example, each ec_softc or il_softc | |
63 | * begins with this structure. | |
64 | */ | |
65 | struct arpcom { | |
66 | struct ifnet ac_if; /* network-visible interface */ | |
187456a2 MK |
67 | struct ether_addr ac_enaddr; /* ethernet hardware address */ |
68 | }; | |
69 | ||
70 | /* | |
71 | * Internet to ethernet address resolution table. | |
72 | */ | |
73 | struct arptab { | |
74 | struct in_addr at_iaddr; /* internet address */ | |
75 | struct ether_addr at_enaddr; /* ethernet address */ | |
76 | struct mbuf *at_hold; /* last packet until resolved/timeout */ | |
77 | u_char at_timer; /* minutes since last reference */ | |
78 | u_char at_flags; /* flags */ | |
8ae4cebd SL |
79 | }; |
80 | ||
5ebce7c6 | 81 | #ifdef KERNEL |
187456a2 | 82 | struct ether_addr etherbroadcastaddr; |
8ae4cebd SL |
83 | struct arptab *arptnew(); |
84 | #endif |