199 lines
6.7 KiB
C
199 lines
6.7 KiB
C
/*
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)if_ether.h 8.1 (Berkeley) 6/10/93
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*/
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#ifndef NETINET_IF_ETHER_H
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#define NETINET_IF_ETHER_H
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#include "net/if_arp.h"
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/*
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* Ethernet address - 6 octets
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* this is only used by the ethers(3) functions.
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*/
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struct ether_addr {
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uint8 ether_addr_octet[6];
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};
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/*
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* Some Ethernet constants.
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*/
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#define ETHER_ADDR_LEN 6 /* Ethernet address length */
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#define ETHER_TYPE_LEN 2 /* Ethernet type field length */
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#define ETHER_CRC_LEN 4 /* Ethernet CRC lenght */
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#define ETHER_HDR_LEN ((ETHER_ADDR_LEN * 2) + ETHER_TYPE_LEN)
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#define ETHER_MIN_LEN 64 /* Minimum frame length, CRC included */
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#define ETHER_MAX_LEN 1518 /* Maximum frame length, CRC included */
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struct ether_header {
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uint8 ether_dhost[ETHER_ADDR_LEN];
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uint8 ether_shost[ETHER_ADDR_LEN];
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uint16 ether_type;
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};
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#define ETHERTYPE_PUP 0x0200 /* PUP protocol */
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#define ETHERTYPE_IP 0x0800 /* IP protocol */
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#define ETHERTYPE_ARP 0x0806 /* address resolution protocol */
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#define ETHERTYPE_REVARP 0x8035 /* reverse addr resolution protocol */
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#define ETHERTYPE_8021Q 0x8100 /* IEEE 802.1Q VLAN tagging */
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#define ETHERTYPE_IPV6 0x86DD /* IPv6 protocol */
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#define ETHERTYPE_PPPOEDISC 0x8863 /* PPP Over Ethernet Discovery Stage */
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#define ETHERTYPE_PPPOE 0x8864 /* PPP Over Ethernet Session Stage */
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#define ETHERTYPE_LOOPBACK 0x9000 /* used to test interfaces */
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#define ETHER_IS_MULTICAST(addr) (*(addr) & 0x01) /* is address mcast/bcast? */
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#define ETHERMTU (ETHER_MAX_LEN - ETHER_HDR_LEN - ETHER_CRC_LEN)
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#define ETHERMIN (ETHER_MIN_LEN - ETHER_HDR_LEN - ETHER_CRC_LEN)
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//#ifdef _NETWORK_STACK
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/*
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* Macro to map an IP multicast address to an Ethernet multicast address.
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* The high-order 25 bits of the Ethernet address are statically assigned,
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* and the low-order 23 bits are taken from the low end of the IP address.
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*/
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#define ETHER_MAP_IP_MULTICAST(ipaddr, enaddr) \
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/* struct in_addr *ipaddr; */ \
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/* u_int8_t enaddr[ETHER_ADDR_LEN]; */ \
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{ \
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(enaddr)[0] = 0x01; \
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(enaddr)[1] = 0x00; \
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(enaddr)[2] = 0x5e; \
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(enaddr)[3] = ((uint8 *)ipaddr)[1] & 0x7f; \
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(enaddr)[4] = ((uint8 *)ipaddr)[2]; \
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(enaddr)[5] = ((uint8 *)ipaddr)[3]; \
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}
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/*
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* Macro to map an IPv6 multicast address to an Ethernet multicast address.
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* The high-order 16 bits of the Ethernet address are statically assigned,
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* and the low-order 32 bits are taken from the low end of the IPv6 address.
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*/
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#define ETHER_MAP_IPV6_MULTICAST(ip6addr, enaddr) \
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/* struct in6_addr *ip6addr; */ \
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/* u_int8_t enaddr[ETHER_ADDR_LEN]; */ \
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{ \
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(enaddr)[0] = 0x33; \
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(enaddr)[1] = 0x33; \
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(enaddr)[2] = ((u_int8_t *)ip6addr)[12]; \
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(enaddr)[3] = ((u_int8_t *)ip6addr)[13]; \
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(enaddr)[4] = ((u_int8_t *)ip6addr)[14]; \
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(enaddr)[5] = ((u_int8_t *)ip6addr)[15]; \
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}
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//#endif
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/*
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* Structure shared between the ethernet driver modules and
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* the address resolution code. For example, each ec_softc or il_softc
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* begins with this structure.
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*/
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struct arpcom {
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struct ifnet ac_if; /* network-visible interface */
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uint8 ac_enaddr[ETHER_ADDR_LEN]; /* ethernet hardware address */
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struct in_addr ac_ipaddr;
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char ac__pad[2]; /* pad for some machines */
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// struct ether_multi *ac_multiaddrs; /* list of ether multicast addrs */
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int ac_multicnt; /* length of ac_multiaddrs list */
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};
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struct ether_device {
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struct arpcom sc_ac;
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struct ether_device *next; /* next ether_device */
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};
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#define sc_if sc_ac.ac_if
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#define sc_addr sc_ac.ac_enaddr
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struct ether_arp {
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struct arphdr ea_hdr;
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u_char arp_sha[6];
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u_char arp_spa[4];
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u_char arp_tha[6];
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u_char arp_tpa[4];
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};
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#define arp_hrd ea_hdr.ar_hrd
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#define arp_pro ea_hdr.ar_pro
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#define arp_hln ea_hdr.ar_hln
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#define arp_pln ea_hdr.ar_pln
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#define arp_op ea_hdr.ar_op
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struct llinfo_arp {
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struct llinfo_arp *la_next;
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struct llinfo_arp *la_prev;
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struct rtentry *la_rt;
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struct mbuf *la_hold;
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int32 la_asked;
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};
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#define la_timer la_rt->rt_rmx.rmx_expire
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struct sockaddr_inarp {
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uint8 sin_len;
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uint8 sin_family;
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uint16 sin_port;
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struct in_addr sin_addr;
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struct in_addr sin_srcaddr;
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uint16 sin_tos;
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uint16 sin_other;
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};
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#define SIN_PROXY 1
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/*
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* IP and ethernet specific routing flags
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*/
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#define RTF_USETRAILERS RTF_PROTO1 /* use trailers */
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#define RTF_ANNOUNCE RTF_PROTO2 /* announce new arp entry */
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#define RTF_PERMANENT_ARP RTF_PROTO3 /* only manual overwrite of entry */
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//#ifdef _NETWORK_STACK
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int arpresolve(struct arpcom *ac, struct rtentry *rt, struct mbuf *m,
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struct sockaddr *dst, uint8 *desten);
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//void arpwhohas(struct arpcom *ac, struct in_addr *ia);
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//#else
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char *ether_ntoa (struct ether_addr *);
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struct ether_addr *ether_aton (char *);
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int ether_ntohost (char *, struct ether_addr *);
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int ether_hostton (char *, struct ether_addr *);
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int ether_line(char *line, struct ether_addr *e, char *hostname);
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//#endif
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#endif /* NETINET_IF_ETHER_H */
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