12632SN/A/* 22632SN/A * eth.h 32632SN/A * 42632SN/A * Ethernet. 52632SN/A * 62632SN/A * Copyright (c) 2000 Dug Song <dugsong@monkey.org> 72632SN/A * 82632SN/A * $Id: eth.h,v 1.15 2004/01/03 08:47:23 dugsong Exp $ 92632SN/A */ 102632SN/A 112632SN/A#ifndef DNET_ETH_H 122632SN/A#define DNET_ETH_H 132632SN/A 142632SN/A#define ETH_ADDR_LEN 6 152632SN/A#define ETH_ADDR_BITS 48 162632SN/A#define ETH_TYPE_LEN 2 172632SN/A#define ETH_CRC_LEN 4 182632SN/A#define ETH_HDR_LEN 14 192632SN/A 202632SN/A#define ETH_LEN_MIN 64 /* minimum frame length with CRC */ 212632SN/A#define ETH_LEN_MAX 1518 /* maximum frame length with CRC */ 222632SN/A 232632SN/A#define ETH_MTU (ETH_LEN_MAX - ETH_HDR_LEN - ETH_CRC_LEN) 242632SN/A#define ETH_MIN (ETH_LEN_MIN - ETH_HDR_LEN - ETH_CRC_LEN) 252632SN/A 262632SN/Atypedef struct eth_addr { 272632SN/A uint8_t data[ETH_ADDR_LEN]; 282632SN/A} eth_addr_t; 292632SN/A 302632SN/Astruct eth_hdr { 312632SN/A eth_addr_t eth_dst; /* destination address */ 322632SN/A eth_addr_t eth_src; /* source address */ 332632SN/A uint16_t eth_type; /* payload type */ 342632SN/A}; 352632SN/A 362632SN/A/* 372632SN/A * Ethernet payload types - http://standards.ieee.org/regauth/ethertype 382632SN/A */ 392632SN/A#define ETH_TYPE_PUP 0x0200 /* PUP protocol */ 402632SN/A#define ETH_TYPE_IP 0x0800 /* IP protocol */ 412632SN/A#define ETH_TYPE_ARP 0x0806 /* address resolution protocol */ 422632SN/A#define ETH_TYPE_REVARP 0x8035 /* reverse addr resolution protocol */ 432632SN/A#define ETH_TYPE_8021Q 0x8100 /* IEEE 802.1Q VLAN tagging */ 442632SN/A#define ETH_TYPE_IPV6 0x86DD /* IPv6 protocol */ 452632SN/A#define ETH_TYPE_MPLS 0x8847 /* MPLS */ 462632SN/A#define ETH_TYPE_MPLS_MCAST 0x8848 /* MPLS Multicast */ 472632SN/A#define ETH_TYPE_PPPOEDISC 0x8863 /* PPP Over Ethernet Discovery Stage */ 482632SN/A#define ETH_TYPE_PPPOE 0x8864 /* PPP Over Ethernet Session Stage */ 492632SN/A#define ETH_TYPE_LOOPBACK 0x9000 /* used to test interfaces */ 502632SN/A 512632SN/A#define ETH_IS_MULTICAST(ea) (*(ea) & 0x01) /* is address mcast/bcast? */ 522632SN/A 532632SN/A#define ETH_ADDR_BROADCAST "\xff\xff\xff\xff\xff\xff" 542632SN/A 552632SN/A#define eth_pack_hdr(h, dst, src, type) do { \ 562632SN/A struct eth_hdr *eth_pack_p = (struct eth_hdr *)(h); \ 572632SN/A memmove(ð_pack_p->eth_dst, &(dst), ETH_ADDR_LEN); \ 582632SN/A memmove(ð_pack_p->eth_src, &(src), ETH_ADDR_LEN); \ 592632SN/A eth_pack_p->eth_type = htons(type); \ 602632SN/A} while (0) 612632SN/A 622632SN/Atypedef struct eth_handle eth_t; 632632SN/A 642632SN/A__BEGIN_DECLS 652632SN/Aeth_t *eth_open(const char *device); 662632SN/Aint eth_get(eth_t *e, eth_addr_t *ea); 672632SN/Aint eth_set(eth_t *e, const eth_addr_t *ea); 682632SN/Asize_t eth_send(eth_t *e, const void *buf, size_t len); 692632SN/Aeth_t *eth_close(eth_t *e); 702632SN/A 712632SN/Achar *eth_ntop(const eth_addr_t *eth, char *dst, size_t len); 722632SN/Aint eth_pton(const char *src, eth_addr_t *dst); 732632SN/Achar *eth_ntoa(const eth_addr_t *eth); 742632SN/A#define eth_aton eth_pton 752632SN/A__END_DECLS 762632SN/A 772632SN/A#endif /* DNET_ETH_H */ 78