Home | History | Annotate | Line # | Download | only in libsa
net.h revision 1.25.6.1 
      1 /*	$NetBSD: net.h,v 1.25.6.1 2011/05/31 03:05:05 rmind 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 #include <netinet/in.h>
     42 #include <netinet/in_systm.h>
     43 
     44 #ifndef _KERNEL	/* XXX - see <netinet/in.h> */
     45 #undef __IPADDR
     46 #define __IPADDR(x)	htonl((u_int32_t)(x))
     47 #endif
     48 
     49 #ifdef _STANDALONE
     50 #include <lib/libsa/iodesc.h>
     51 #else
     52 #include <iodesc.h>
     53 #endif
     54 
     55 #define BA { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }
     56 
     57 /* Returns true if n_long's on the same net */
     58 #define	SAMENET(a1, a2, m) ((a1.s_addr & m) == (a2.s_addr & m))
     59 
     60 #define MACPY(s, d) memcpy(d, s, 6)
     61 
     62 #define MAXTMO 20	/* seconds */
     63 #define MINTMO 2	/* seconds */
     64 
     65 #define FNAME_SIZE 128
     66 #define	IFNAME_SIZE 16
     67 #define RECV_SIZE 1536	/* XXX delete this */
     68 
     69 /*
     70  * How much room to leave for headers in UDP packets:
     71  *  14: struct ether_header
     72  *  20: struct ip
     73  *   8: struct udphdr
     74  * That's 42 but let's pad it out to 48 bytes.
     75  */
     76 #define ETHERNET_HEADER_SIZE 14
     77 #define IP_HEADER_SIZE 20
     78 #define UDP_HEADER_SIZE 8
     79 
     80 #define	UDP_TOTAL_HEADER_SIZE (ETHERNET_HEADER_SIZE + IP_HEADER_SIZE + UDP_HEADER_SIZE)
     81 
     82 /*
     83  * How much room to leave for headers in TCP packets:
     84  *  14: struct ether_header
     85  *  20: struct ip
     86  *  20: struct tcphdr
     87  */
     88 #define TCP_HEADER_SIZE 20
     89 
     90 #define TCP_TOTAL_HEADER_SIZE (ETHERNET_HEADER_SIZE + IP_HEADER_SIZE + TCP_HEADER_SIZE)
     91 
     92 extern	u_char bcea[6];
     93 extern	char rootpath[FNAME_SIZE];
     94 extern	char bootfile[FNAME_SIZE];
     95 extern	char hostname[FNAME_SIZE];
     96 
     97 /* All of these are in network order. */
     98 extern	struct in_addr myip;
     99 extern	struct in_addr rootip;
    100 extern	struct in_addr gateip;
    101 extern	n_long netmask;
    102 
    103 extern	int debug;			/* defined in the machdep sources */
    104 
    105 /* ARP/RevARP functions: */
    106 u_char	*arpwhohas(struct iodesc *, struct in_addr);
    107 void	arp_reply(struct iodesc *, void *);
    108 int	rarp_getipaddress(int);
    109 
    110 /* Link functions: */
    111 ssize_t sendether(struct iodesc *, void *, size_t, u_char *, int);
    112 ssize_t readether(struct iodesc *, void *, size_t, saseconds_t, u_int16_t *);
    113 
    114 ssize_t	sendip __P((struct iodesc *, void *, size_t, u_int8_t));
    115 ssize_t	readip __P((struct iodesc *, void *, size_t, time_t, u_int8_t));
    116 
    117 ssize_t	sendudp(struct iodesc *, void *, size_t);
    118 ssize_t	readudp(struct iodesc *, void *, size_t, saseconds_t);
    119 
    120 int	tcp_connect __P((struct iodesc *));
    121 ssize_t	sendtcp __P((struct iodesc *, void *, size_t));
    122 ssize_t	readtcp __P((struct iodesc *, void *, size_t, time_t));
    123 
    124 ssize_t	sendrecv(struct iodesc *, ssize_t (*)(struct iodesc *, void *, size_t),
    125     void *, size_t, ssize_t (*)(struct iodesc *, void *, size_t, saseconds_t),
    126     void *, size_t);
    127 
    128 /* Utilities: */
    129 char	*ether_sprintf(const u_char *);
    130 int	ip_cksum(const void *, size_t);
    131 
    132 /* Machine-dependent functions: */
    133 #ifdef _STANDALONE	/* XXX for mount_nfs(8) SMALLPROG hack */
    134 satime_t	getsecs(void);
    135 #endif
    136