07b064e02e
Some of the stuff (e.g., rarpd, bootpd, dhcpd etc., libsa) still will only support Ethernet. Tcpdump itself should be ok, but libpcap needs lot of work. For the detailed change history, look at the commit log entries for the is-newarp branch.
183 lines
6.4 KiB
C
183 lines
6.4 KiB
C
/* $NetBSD: if_ether.h,v 1.2 1997/03/15 18:12:25 is Exp $ */
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/*
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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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/*
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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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u_int8_t ether_addr_octet[6];
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};
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/*
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* Structure of a 10Mb/s Ethernet header.
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*/
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#define ETHER_ADDR_LEN 6
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struct ether_header {
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u_int8_t ether_dhost[ETHER_ADDR_LEN];
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u_int8_t ether_shost[ETHER_ADDR_LEN];
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u_int16_t ether_type;
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};
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#include <net/ethertypes.h>
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#define ETHER_IS_MULTICAST(addr) (*(addr) & 0x01) /* is address mcast/bcast? */
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#define ETHERMTU 1500
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#define ETHERMIN (60-14)
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#ifdef _KERNEL
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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] = ((u_int8_t *)ipaddr)[1] & 0x7f; \
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(enaddr)[4] = ((u_int8_t *)ipaddr)[2]; \
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(enaddr)[5] = ((u_int8_t *)ipaddr)[3]; \
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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 multicast list 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 ethercom {
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struct ifnet ec_if; /* network-visible interface */
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LIST_HEAD(, ether_multi) ec_multiaddrs; /* list of ether multicast addrs */
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int ec_multicnt; /* length of ac_multiaddrs list */
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};
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#ifdef _KERNEL
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u_int8_t etherbroadcastaddr[ETHER_ADDR_LEN];
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u_int8_t ether_ipmulticast_min[ETHER_ADDR_LEN];
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u_int8_t ether_ipmulticast_max[ETHER_ADDR_LEN];
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int ether_addmulti __P((struct ifreq *, struct ethercom *));
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int ether_delmulti __P((struct ifreq *, struct ethercom *));
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#endif /* _KERNEL */
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/*
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* Ethernet multicast address structure. There is one of these for each
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* multicast address or range of multicast addresses that we are supposed
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* to listen to on a particular interface. They are kept in a linked list,
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* rooted in the interface's ethercom structure. (This really has nothing to
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* do with ARP, or with the Internet address family, but this appears to be
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* the minimally-disrupting place to put it.)
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*/
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struct ether_multi {
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u_int8_t enm_addrlo[ETHER_ADDR_LEN]; /* low or only address of range */
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u_int8_t enm_addrhi[ETHER_ADDR_LEN]; /* high or only address of range */
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struct ethercom *enm_ec; /* back pointer to ethercom */
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u_int enm_refcount; /* no. claims to this addr/range */
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LIST_ENTRY(ether_multi) enm_list;
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};
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/*
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* Structure used by macros below to remember position when stepping through
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* all of the ether_multi records.
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*/
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struct ether_multistep {
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struct ether_multi *e_enm;
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};
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/*
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* Macro for looking up the ether_multi record for a given range of Ethernet
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* multicast addresses connected to a given ethercom structure. If no matching
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* record is found, "enm" returns NULL.
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*/
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#define ETHER_LOOKUP_MULTI(addrlo, addrhi, ec, enm) \
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/* u_int8_t addrlo[ETHER_ADDR_LEN]; */ \
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/* u_int8_t addrhi[ETHER_ADDR_LEN]; */ \
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/* struct ethercom *ec; */ \
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/* struct ether_multi *enm; */ \
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{ \
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for ((enm) = (ec)->ec_multiaddrs.lh_first; \
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(enm) != NULL && \
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(bcmp((enm)->enm_addrlo, (addrlo), ETHER_ADDR_LEN) != 0 || \
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bcmp((enm)->enm_addrhi, (addrhi), ETHER_ADDR_LEN) != 0); \
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(enm) = (enm)->enm_list.le_next); \
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}
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/*
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* Macro to step through all of the ether_multi records, one at a time.
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* The current position is remembered in "step", which the caller must
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* provide. ETHER_FIRST_MULTI(), below, must be called to initialize "step"
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* and get the first record. Both macros return a NULL "enm" when there
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* are no remaining records.
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*/
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#define ETHER_NEXT_MULTI(step, enm) \
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/* struct ether_multistep step; */ \
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/* struct ether_multi *enm; */ \
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{ \
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if (((enm) = (step).e_enm) != NULL) \
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(step).e_enm = (enm)->enm_list.le_next; \
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}
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#define ETHER_FIRST_MULTI(step, ec, enm) \
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/* struct ether_multistep step; */ \
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/* struct ethercom *ec; */ \
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/* struct ether_multi *enm; */ \
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{ \
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(step).e_enm = (ec)->ec_multiaddrs.lh_first; \
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ETHER_NEXT_MULTI((step), (enm)); \
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}
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/*
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* Prototype ethers(3) functions.
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*/
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#ifndef _KERNEL
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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char * ether_ntoa __P((struct ether_addr *));
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struct ether_addr *
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ether_aton __P((char *));
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int ether_ntohost __P((char *, struct ether_addr *));
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int ether_hostton __P((char *, struct ether_addr *));
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int ether_line __P((char *, struct ether_addr *, char *));
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__END_DECLS
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#endif
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