sys/lib/libsa/net.h

   1 /*      $NetBSD: net.h,v 1.24 2009/01/17 14:00:36 tsutsui 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:
  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 ETHER_SIZE 14
  77 #define HEADER_SIZE 48
  78
  79 extern  u_char bcea[6];
  80 extern  char rootpath[FNAME_SIZE];
  81 extern  char bootfile[FNAME_SIZE];
  82 extern  char hostname[FNAME_SIZE];
  83
  84 /* All of these are in network order. */
  85 extern  struct in_addr myip;
  86 extern  struct in_addr rootip;
  87 extern  struct in_addr gateip;
  88 extern  n_long netmask;
  89
  90 extern  int debug;                      /* defined in the machdep sources */
  91
  92 /* ARP/RevARP functions: */
  93 u_char  *arpwhohas(struct iodesc *, struct in_addr);
  94 void    arp_reply(struct iodesc *, void *);
  95 int     rarp_getipaddress(int);
  96
  97 /* Link functions: */
  98 ssize_t sendether(struct iodesc *, void *, size_t, u_char *, int);
  99 ssize_t readether(struct iodesc *, void *, size_t, saseconds_t, u_int16_t *);
 100
 101 ssize_t sendudp(struct iodesc *, void *, size_t);
 102 ssize_t readudp(struct iodesc *, void *, size_t, saseconds_t);
 103 ssize_t sendrecv(struct iodesc *, ssize_t (*)(struct iodesc *, void *, size_t),
 104     void *, size_t, ssize_t (*)(struct iodesc *, void *, size_t, saseconds_t),
 105     void *, size_t);
 106
 107 /* Utilities: */
 108 char    *ether_sprintf(const u_char *);
 109 int     ip_cksum(const void *, size_t);
 110
 111 /* Machine-dependent functions: */
 112 #ifdef _STANDALONE      /* XXX for mount_nfs(8) SMALLPROG hack */
 113 satime_t        getsecs(void);
 114 #endif