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- /*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * Copyright (c) 1982, 1986, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)if_ether.h 8.3 (Berkeley) 5/2/95
- * $FreeBSD$
- */
- #ifndef _NETINET_IF_ETHER_H_
- #define _NETINET_IF_ETHER_H_
- #include <net/ethernet.h>
- #include <net/if_arp.h>
- /*
- * Macro to map an IP multicast address to an Ethernet multicast address.
- * The high-order 25 bits of the Ethernet address are statically assigned,
- * and the low-order 23 bits are taken from the low end of the IP address.
- */
- #define ETHER_MAP_IP_MULTICAST(ipaddr, enaddr) \
- /* struct in_addr *ipaddr; */ \
- /* u_char enaddr[ETHER_ADDR_LEN]; */ \
- { \
- (enaddr)[0] = 0x01; \
- (enaddr)[1] = 0x00; \
- (enaddr)[2] = 0x5e; \
- (enaddr)[3] = ((const u_char *)ipaddr)[1] & 0x7f; \
- (enaddr)[4] = ((const u_char *)ipaddr)[2]; \
- (enaddr)[5] = ((const u_char *)ipaddr)[3]; \
- }
- /*
- * Macro to map an IP6 multicast address to an Ethernet multicast address.
- * The high-order 16 bits of the Ethernet address are statically assigned,
- * and the low-order 32 bits are taken from the low end of the IP6 address.
- */
- #define ETHER_MAP_IPV6_MULTICAST(ip6addr, enaddr) \
- /* struct in6_addr *ip6addr; */ \
- /* u_char enaddr[ETHER_ADDR_LEN]; */ \
- { \
- (enaddr)[0] = 0x33; \
- (enaddr)[1] = 0x33; \
- (enaddr)[2] = ((const u_char *)ip6addr)[12]; \
- (enaddr)[3] = ((const u_char *)ip6addr)[13]; \
- (enaddr)[4] = ((const u_char *)ip6addr)[14]; \
- (enaddr)[5] = ((const u_char *)ip6addr)[15]; \
- }
- /*
- * Ethernet Address Resolution Protocol.
- *
- * See RFC 826 for protocol description. Structure below is adapted
- * to resolving internet addresses. Field names used correspond to
- * RFC 826.
- */
- struct ether_arp {
- struct arphdr ea_hdr; /* fixed-size header */
- u_char arp_sha[ETHER_ADDR_LEN]; /* sender hardware address */
- u_char arp_spa[4]; /* sender protocol address */
- u_char arp_tha[ETHER_ADDR_LEN]; /* target hardware address */
- u_char arp_tpa[4]; /* target protocol address */
- };
- #define arp_hrd ea_hdr.ar_hrd
- #define arp_pro ea_hdr.ar_pro
- #define arp_hln ea_hdr.ar_hln
- #define arp_pln ea_hdr.ar_pln
- #define arp_op ea_hdr.ar_op
- #ifndef BURN_BRIDGES /* Can be used by third party software. */
- struct sockaddr_inarp {
- u_char sin_len;
- u_char sin_family;
- u_short sin_port;
- struct in_addr sin_addr;
- struct in_addr sin_srcaddr;
- u_short sin_tos;
- u_short sin_other;
- #define SIN_PROXY 1
- };
- #endif /* !BURN_BRIDGES */
- /*
- * IP and ethernet specific routing flags
- */
- #define RTF_USETRAILERS RTF_PROTO1 /* use trailers */
- #define RTF_ANNOUNCE RTF_PROTO2 /* announce new arp entry */
- #ifdef _KERNEL
- extern u_char ether_ipmulticast_min[ETHER_ADDR_LEN];
- extern u_char ether_ipmulticast_max[ETHER_ADDR_LEN];
- struct ifaddr;
- struct llentry;
- int arpresolve(struct ifnet *ifp, int is_gw, struct mbuf *m,
- const struct sockaddr *dst, u_char *desten, uint32_t *pflags,
- struct llentry **plle);
- void arprequest(struct ifnet *, const struct in_addr *,
- const struct in_addr *, u_char *);
- void arp_ifinit(struct ifnet *, struct ifaddr *);
- void arp_announce_ifaddr(struct ifnet *, struct in_addr addr, u_char *);
- #endif
- #endif
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