sys/lib/libsa/net.h

   1 /*      $NetBSD: net.h,v 1.26 2011/05/11 16:23:40 zoltan 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