lib/libstand/net.h

   1 /*      $NetBSD: net.h,v 1.10 1995/10/20 00:46:30 cgd 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  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  * $FreeBSD$
  37  */
  38
  39 #ifndef _KERNEL /* XXX - see <netinet/in.h> */
  40 #undef __IPADDR
  41 #define __IPADDR(x)     htonl((u_int32_t)(x))
  42 #endif
  43
  44 #include "iodesc.h"
  45
  46 #define BA { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }
  47
  48 /* Returns true if n_long's on the same net */
  49 #define SAMENET(a1, a2, m) ((a1.s_addr & m) == (a2.s_addr & m))
  50
  51 #define MACPY(s, d) bcopy((char *)s, (char *)d, 6)
  52
  53 #define MAXTMO 20       /* seconds */
  54 #define MINTMO 2        /* seconds */
  55
  56 #define FNAME_SIZE 128
  57 #define IFNAME_SIZE 16
  58 #define RECV_SIZE 1536  /* XXX delete this */
  59
  60 /*
  61  * How much room to leave for headers:
  62  *  14: struct ether_header
  63  *  20: struct ip
  64  *   8: struct udphdr
  65  * That's 42 but let's pad it out to 48 bytes.
  66  */
  67 #define ETHER_SIZE 14
  68 #define HEADER_SIZE 48
  69
  70 extern  u_char bcea[6];
  71 extern  char rootpath[FNAME_SIZE];
  72 extern  char bootfile[FNAME_SIZE];
  73 extern  char hostname[FNAME_SIZE];
  74 extern  int hostnamelen;
  75 extern  char domainname[FNAME_SIZE];
  76 extern  int domainnamelen;
  77 extern  char ifname[IFNAME_SIZE];
  78
  79 /* All of these are in network order. */
  80 extern  struct in_addr myip;
  81 extern  struct in_addr rootip;
  82 extern  struct in_addr swapip;
  83 extern  struct in_addr gateip;
  84 extern  struct in_addr nameip;
  85 extern  n_long netmask;
  86
  87 extern  int debug;                      /* defined in the machdep sources */
  88
  89 extern struct iodesc sockets[SOPEN_MAX];
  90
  91 /* ARP/RevARP functions: */
  92 u_char  *arpwhohas(struct iodesc *, struct in_addr);
  93 void    arp_reply(struct iodesc *, void *);
  94 int     rarp_getipaddress(int);
  95
  96 /* Link functions: */
  97 ssize_t sendether(struct iodesc *d, void *pkt, size_t len,
  98                         u_char *dea, int etype);
  99 ssize_t readether(struct iodesc *d, void *pkt, size_t len,
 100                         time_t tleft, u_int16_t *etype);
 101
 102 ssize_t sendudp(struct iodesc *, void *, size_t);
 103 ssize_t readudp(struct iodesc *, void *, size_t, time_t);
 104 ssize_t sendrecv(struct iodesc *,
 105                       ssize_t (*)(struct iodesc *, void *, size_t),
 106                         void *, size_t,
 107                         ssize_t (*)(struct iodesc *, void *, size_t, time_t),
 108                         void *, size_t);
 109
 110 /* bootp/DHCP */
 111 void    bootp(int, int);
 112
 113 /* Utilities: */
 114 char    *ether_sprintf(u_char *);
 115 int     in_cksum(void *, int);
 116 char    *inet_ntoa(struct in_addr);
 117 char    *intoa(n_long);         /* similar to inet_ntoa */
 118 n_long  inet_addr(char *);
 119
 120 /* Machine-dependent functions: */
 121 time_t  getsecs(void);