1*12459Ssam /* if_ether.h 4.5 83/05/15 */ 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 */ 1411573Ssam #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) 2611573Ssam 2711573Ssam /* 2811573Ssam * Ethernet Address Resolution Protocol. 2911573Ssam * 3011573Ssam * See RFC 826 for protocol description. Structure below is adapted 3111573Ssam * to resolving internet addresses. Field names used correspond to 3211573Ssam * RFC 826. 3311573Ssam */ 3411573Ssam struct ether_arp { 3511573Ssam u_short arp_hrd; /* format of hardware address */ 3611573Ssam #define ARPHRD_ETHER 1 /* ethernet hardware address */ 3711573Ssam u_short arp_pro; /* format of proto. address (ETHERPUP_IPTYPE) */ 3811573Ssam u_char arp_hln; /* length of hardware address (6) */ 3911573Ssam u_char arp_pln; /* length of protocol address (4) */ 4011573Ssam u_short arp_op; 4111573Ssam #define ARPOP_REQUEST 1 /* request to resolve address */ 4211573Ssam #define ARPOP_REPLY 2 /* response to previous request */ 4311573Ssam u_char arp_sha[6]; /* sender hardware address */ 4411573Ssam u_char arp_spa[4]; /* sender protocol address */ 4511573Ssam u_char arp_tha[6]; /* target hardware address */ 4611573Ssam u_char arp_tpa[4]; /* target protocol address */ 4711573Ssam }; 4811573Ssam 4911573Ssam /* 5011573Ssam * Structure shared between the ethernet driver modules and 5111573Ssam * the address resolution code. For example, each ec_softc or il_softc 5211573Ssam * begins with this structure. 5311573Ssam */ 5411573Ssam struct arpcom { 5511573Ssam struct ifnet ac_if; /* network-visible interface */ 5611573Ssam u_char ac_enaddr[6]; /* ethernet hardware address */ 5711573Ssam struct arpcom *ac_ac; /* link to next ether driver */ 5811573Ssam }; 5911573Ssam 60*12459Ssam #ifdef KERNEL 61*12459Ssam u_char etherbroadcastaddr[6]; /* 6 bytes of 0xFF */ 6211573Ssam struct in_addr arpmyaddr(); 6311573Ssam struct arptab *arptnew(); 6411573Ssam #endif 65