Fix GCC build errors.

[mirror_edk2.git] / StdLib / Include / net / if_dl.h

/*\r
 * Copyright (c) 1990, 1993\r
 *	The Regents of the University of California.  All rights reserved.\r
 *\r
 * Redistribution and use in source and binary forms, with or without\r
 * modification, are permitted provided that the following conditions\r
 * are met:\r
 * 1. Redistributions of source code must retain the above copyright\r
 *    notice, this list of conditions and the following disclaimer.\r
 * 2. Redistributions in binary form must reproduce the above copyright\r
 *    notice, this list of conditions and the following disclaimer in the\r
 *    documentation and/or other materials provided with the distribution.\r
 * 3. All advertising materials mentioning features or use of this software\r
 *    must display the following acknowledgement:\r
 *	This product includes software developed by the University of\r
 *	California, Berkeley and its contributors.\r
 * 4. Neither the name of the University nor the names of its contributors\r
 *    may be used to endorse or promote products derived from this software\r
 *    without specific prior written permission.\r
 *\r
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND\r
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE\r
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r
 * SUCH DAMAGE.\r
 *\r
 *	@(#)if_dl.h	8.1 (Berkeley) 6/10/93\r
 * $Id: if_dl.h,v 1.1.1.1 2006/05/30 06:12:42 hhzhou Exp $\r
 */\r
\r
#ifndef _NET_IF_DL_H_\r
#define _NET_IF_DL_H_\r
\r
/*\r
 * A Link-Level Sockaddr may specify the interface in one of two\r
 * ways: either by means of a system-provided index number (computed\r
 * anew and possibly differently on every reboot), or by a human-readable\r
 * string such as "il0" (for managerial convenience).\r
 *\r
 * Census taking actions, such as something akin to SIOCGCONF would return\r
 * both the index and the human name.\r
 *\r
 * High volume transactions (such as giving a link-level ``from'' address\r
 * in a recvfrom or recvmsg call) may be likely only to provide the indexed\r
 * form, (which requires fewer copy operations and less space).\r
 *\r
 * The form and interpretation  of the link-level address is purely a matter\r
 * of convention between the device driver and its consumers; however, it is\r
 * expected that all drivers for an interface of a given if_type will agree.\r
 */\r
\r
/*\r
 * Structure of a Link-Level sockaddr:\r
 */\r
struct sockaddr_dl {\r
	u_char	sdl_len;	/* Total length of sockaddr */\r
	u_char	sdl_family;	/* AF_DLI */\r
	u_short	sdl_index;	/* if != 0, system given index for interface */\r
	u_char	sdl_type;	/* interface type */\r
	u_char	sdl_nlen;	/* interface name length, no trailing 0 reqd. */\r
	u_char	sdl_alen;	/* link level address length */\r
	u_char	sdl_slen;	/* link layer selector length */\r
	char	sdl_data[12];	/* minimum work area, can be larger;\r
				   contains both if name and ll address */\r
};\r
\r
#define LLADDR(s) ((caddr_t)((s)->sdl_data + (s)->sdl_nlen))\r
\r
#ifndef KERNEL\r
\r
#include <sys/EfiCdefs.h>\r
\r
__BEGIN_DECLS\r
void	link_addr __P((const char *, struct sockaddr_dl *));\r
char	*link_ntoa __P((const struct sockaddr_dl *));\r
__END_DECLS\r
\r
#endif /* !KERNEL */\r
\r
#endif\r