1*11573Ssam /* if_ether.h 4.4 83/03/15 */ 29744Ssam 39744Ssam /* 49744Ssam * Structure of a 10Mb/s Ethernet header. 59744Ssam */ 69746Ssam struct ether_header { 79746Ssam u_char ether_dhost[6]; 89746Ssam u_char ether_shost[6]; 99746Ssam u_short ether_type; 109744Ssam }; 119744Ssam 129748Ssam #define ETHERPUP_PUPTYPE 0x0400 /* PUP protocol */ 139748Ssam #define ETHERPUP_IPTYPE 0x0800 /* IP protocol */ 14*11573Ssam #define ETHERPUP_ARPTYPE 0x0806 /* Addr. resolution protocol */ 159744Ssam 169744Ssam /* 179746Ssam * The ETHERPUP_NTRAILER packet types starting at ETHERPUP_TRAIL have 189746Ssam * (type-ETHERPUP_TRAIL)*512 bytes of data followed 199744Ssam * by a PUP type (as given above) and then the (variable-length) header. 209744Ssam */ 219748Ssam #define ETHERPUP_TRAIL 0x1000 /* Trailer PUP */ 229746Ssam #define ETHERPUP_NTRAILER 16 239746Ssam 249746Ssam #define ETHERMTU 1500 259746Ssam #define ETHERMIN (60-14) 26*11573Ssam 27*11573Ssam u_char etherbroadcastaddr[6]; /* 6 bytes of 0xFF */ 28*11573Ssam 29*11573Ssam /* 30*11573Ssam * Ethernet Address Resolution Protocol. 31*11573Ssam * 32*11573Ssam * See RFC 826 for protocol description. Structure below is adapted 33*11573Ssam * to resolving internet addresses. Field names used correspond to 34*11573Ssam * RFC 826. 35*11573Ssam */ 36*11573Ssam struct ether_arp { 37*11573Ssam u_short arp_hrd; /* format of hardware address */ 38*11573Ssam #define ARPHRD_ETHER 1 /* ethernet hardware address */ 39*11573Ssam u_short arp_pro; /* format of proto. address (ETHERPUP_IPTYPE) */ 40*11573Ssam u_char arp_hln; /* length of hardware address (6) */ 41*11573Ssam u_char arp_pln; /* length of protocol address (4) */ 42*11573Ssam u_short arp_op; 43*11573Ssam #define ARPOP_REQUEST 1 /* request to resolve address */ 44*11573Ssam #define ARPOP_REPLY 2 /* response to previous request */ 45*11573Ssam u_char arp_sha[6]; /* sender hardware address */ 46*11573Ssam u_char arp_spa[4]; /* sender protocol address */ 47*11573Ssam u_char arp_tha[6]; /* target hardware address */ 48*11573Ssam u_char arp_tpa[4]; /* target protocol address */ 49*11573Ssam }; 50*11573Ssam 51*11573Ssam #ifdef KERNEL 52*11573Ssam /* 53*11573Ssam * Structure shared between the ethernet driver modules and 54*11573Ssam * the address resolution code. For example, each ec_softc or il_softc 55*11573Ssam * begins with this structure. 56*11573Ssam */ 57*11573Ssam struct arpcom { 58*11573Ssam struct ifnet ac_if; /* network-visible interface */ 59*11573Ssam u_char ac_enaddr[6]; /* ethernet hardware address */ 60*11573Ssam struct arpcom *ac_ac; /* link to next ether driver */ 61*11573Ssam }; 62*11573Ssam 63*11573Ssam struct in_addr arpmyaddr(); 64*11573Ssam struct arptab *arptnew(); 65*11573Ssam #endif 66