f6aac1c3b5
Moving include/sys NetBSD headers to /sys/sys Moving include/arch/*/ NetBSD headers to /sys/arch/*/include Change-Id: Ia1a45d4e83ab806c84093ec2b61bdbea9bed65a0
110 lines
4 KiB
C
110 lines
4 KiB
C
/* $NetBSD: if_ether.h,v 1.58 2010/05/19 20:41:59 christos 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. 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 _NET_IF_ETHER_H_
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#define _NET_IF_ETHER_H_
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/*
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* Some basic Ethernet constants.
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*/
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#define ETHER_ADDR_LEN 6 /* length of an Ethernet address */
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#define ETHER_TYPE_LEN 2 /* length of the Ethernet type field */
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#define ETHER_CRC_LEN 4 /* length of the Ethernet CRC */
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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, including CRC */
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#define ETHER_MAX_LEN 1518 /* maximum frame length, including CRC */
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#define ETHER_MAX_LEN_JUMBO 9018 /* maximum jumbo frame len, including CRC */
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/*
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* Some Ethernet extensions.
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*/
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#define ETHER_VLAN_ENCAP_LEN 4 /* length of 802.1Q VLAN encapsulation */
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#define ETHER_PPPOE_ENCAP_LEN 8 /* length of PPPoE encapsulation */
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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_t ether_addr_octet[ETHER_ADDR_LEN];
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} __packed;
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/*
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* Structure of a 10Mb/s Ethernet header.
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*/
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struct ether_header {
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uint8_t ether_dhost[ETHER_ADDR_LEN];
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uint8_t ether_shost[ETHER_ADDR_LEN];
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uint16_t ether_type;
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} __packed;
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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 ETHER_IS_LOCAL(addr) (*(addr) & 0x02) /* is address local? */
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#define ETHERMTU_JUMBO (ETHER_MAX_LEN_JUMBO - ETHER_HDR_LEN - ETHER_CRC_LEN)
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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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/*
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* Compute the maximum frame size based on ethertype (i.e. possible
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* encapsulation) and whether or not an FCS is present.
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*/
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#define ETHER_MAX_FRAME(ifp, etype, hasfcs) \
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((ifp)->if_mtu + ETHER_HDR_LEN + \
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((hasfcs) ? ETHER_CRC_LEN : 0) + \
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(((etype) == ETHERTYPE_VLAN) ? ETHER_VLAN_ENCAP_LEN : 0) + \
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(((etype) == ETHERTYPE_PPPOE) ? ETHER_PPPOE_ENCAP_LEN : 0))
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/*
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* Ethernet CRC32 polynomials (big- and little-endian verions).
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*/
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#define ETHER_CRC_POLY_LE 0xedb88320
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#define ETHER_CRC_POLY_BE 0x04c11db6
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/*
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* Prototype ethers(3) functions.
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*/
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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char * ether_ntoa(const struct ether_addr *);
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struct ether_addr *
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ether_aton(const char *);
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int ether_ntohost(char *, const struct ether_addr *);
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int ether_hostton(const char *, struct ether_addr *);
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int ether_line(const char *, struct ether_addr *, char *);
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__END_DECLS
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#endif /* !_NET_IF_ETHER_H_ */
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