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- /*
- * Copyright (c) 1990, 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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_dl.h 8.1 (Berkeley) 6/10/93
- */
-
- #ifndef _NET_IF_DL_H
- #define _NET_IF_DL_H
-
- #ifndef EXEC_TYPES_H
- #include <exec/types.h>
- #endif /* EXEC_TYPES_H */
-
- /*
- * A Link-Level Sockaddr may specify the interface in one of two
- * ways: either by means of a system-provided index number (computed
- * anew and possibly differently on every reboot), or by a human-readable
- * string such as "il0" (for managerial convenience).
- *
- * Census taking actions, such as something akin to SIOCGCONF would return
- * both the index and the human name.
- *
- * High volume transactions (such as giving a link-level ``from'' address
- * in a recvfrom or recvmsg call) may be likely only to provide the indexed
- * form, (which requires fewer copy operations and less space).
- *
- * The form and interpretation of the link-level address is purely a matter
- * of convention between the device driver and its consumers; however, it is
- * expected that all drivers for an interface of a given if_type will agree.
- */
-
- /*
- * Structure of a Link-Level sockaddr:
- */
- struct sockaddr_dl {
- UBYTE sdl_len; /* Total length of sockaddr */
- UBYTE sdl_family; /* AF_DLI */
- UWORD sdl_index; /* if != 0, system given index for interface */
- UBYTE sdl_type; /* interface type */
- UBYTE sdl_nlen; /* interface name length, no trailing 0 reqd. */
- UBYTE sdl_alen; /* link level address length */
- UBYTE sdl_slen; /* link layer selector length */
- BYTE sdl_data[12]; /* minimum work area, can be larger;
- contains both if name and ll address */
- };
-
- #define LLADDR(s) ((APTR)((s)->sdl_data + (s)->sdl_nlen))
-
- #endif /* _NET_IF_DL_H */
-