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net.h revision 1.20 
      1 /*	$NetBSD: net.h,v 1.20 2007/11/24 13:20:56 isaki Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1993 Adam Glass
      5  * Copyright (c) 1992 Regents of the University of California.
      6  * All rights reserved.
      7  *
      8  * This software was developed by the Computer Systems Engineering group
      9  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
     10  * contributed to Berkeley.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. All advertising materials mentioning features or use of this software
     21  *    must display the following acknowledgement:
     22  *	This product includes software developed by the University of
     23  *	California, Lawrence Berkeley Laboratory and its contributors.
     24  * 4. Neither the name of the University nor the names of its contributors
     25  *    may be used to endorse or promote products derived from this software
     26  *    without specific prior written permission.
     27  *
     28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     38  * SUCH DAMAGE.
     39  */
     40 
     41 #ifndef _KERNEL	/* XXX - see <netinet/in.h> */
     42 #undef __IPADDR
     43 #define __IPADDR(x)	htonl((u_int32_t)(x))
     44 #endif
     45 
     46 #ifdef _STANDALONE
     47 #include <lib/libsa/iodesc.h>
     48 #else
     49 #include <iodesc.h>
     50 #endif
     51 
     52 #define BA { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }
     53 
     54 /* Returns true if n_long's on the same net */
     55 #define	SAMENET(a1, a2, m) ((a1.s_addr & m) == (a2.s_addr & m))
     56 
     57 #define MACPY(s, d) bcopy((char *)s, (char *)d, 6)
     58 
     59 #define MAXTMO 20	/* seconds */
     60 #define MINTMO 2	/* seconds */
     61 
     62 #define FNAME_SIZE 128
     63 #define	IFNAME_SIZE 16
     64 #define RECV_SIZE 1536	/* XXX delete this */
     65 
     66 /*
     67  * How much room to leave for headers:
     68  *  14: struct ether_header
     69  *  20: struct ip
     70  *   8: struct udphdr
     71  * That's 42 but let's pad it out to 48 bytes.
     72  */
     73 #define ETHER_SIZE 14
     74 #define	HEADER_SIZE 48
     75 
     76 extern	u_char bcea[6];
     77 extern	char rootpath[FNAME_SIZE];
     78 extern	char bootfile[FNAME_SIZE];
     79 extern	char hostname[FNAME_SIZE];
     80 
     81 /* All of these are in network order. */
     82 extern	struct in_addr myip;
     83 extern	struct in_addr rootip;
     84 extern	struct in_addr gateip;
     85 extern	n_long netmask;
     86 
     87 extern	int debug;			/* defined in the machdep sources */
     88 
     89 /* ARP/RevARP functions: */
     90 u_char	*arpwhohas __P((struct iodesc *, struct in_addr));
     91 void	arp_reply __P((struct iodesc *, void *));
     92 int	rarp_getipaddress __P((int));
     93 
     94 /* Link functions: */
     95 ssize_t sendether __P((struct iodesc *, void *, size_t, u_char *, int));
     96 ssize_t readether __P((struct iodesc *, void *, size_t, time_t, u_int16_t *));
     97 
     98 ssize_t	sendudp __P((struct iodesc *, void *, size_t));
     99 ssize_t	readudp __P((struct iodesc *, void *, size_t, time_t));
    100 ssize_t	sendrecv __P((struct iodesc *,
    101 			ssize_t (*)(struct iodesc *, void *, size_t),
    102 			void *, size_t,
    103 			ssize_t (*)(struct iodesc *, void *, size_t, time_t),
    104 			void *, size_t));
    105 
    106 /* Utilities: */
    107 char	*ether_sprintf __P((const u_char *));
    108 int	ip_cksum __P((const void *, size_t));
    109 
    110 /* Machine-dependent functions: */
    111 time_t	getsecs __P((void));
    112