usr/src/boot/lib/libstand/net.h

   1 /*
   2  * Copyright (c) 1993 Adam Glass
   3  * Copyright (c) 1992 Regents of the University of California.
   4  * All rights reserved.
   5  *
   6  * This software was developed by the Computer Systems Engineering group
   7  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
   8  * contributed to Berkeley.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #ifndef _STAND_NET_H
  36 #define _STAND_NET_H
  37 #ifndef _KERNEL /* XXX - see <netinet/in.h> */
  38 #undef __IPADDR
  39 #define __IPADDR(x)     htonl((u_int32_t)(x))
  40 #endif
  41
  42 #include "iodesc.h"
  43
  44 #define BA { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }
  45
  46 enum net_proto {
  47         NET_NONE,
  48         NET_NFS,
  49         NET_TFTP
  50 };
  51
  52 /* Returns true if n_long's on the same net */
  53 #define SAMENET(a1, a2, m) ((a1.s_addr & m) == (a2.s_addr & m))
  54
  55 #define MACPY(s, d) bcopy((char *)s, (char *)d, 6)
  56
  57 #define MAXTMO 120      /* seconds */
  58 #define MINTMO 2        /* seconds */
  59
  60 #define FNAME_SIZE 128
  61 #define IFNAME_SIZE 16
  62 #define RECV_SIZE 1536  /* XXX delete this */
  63
  64 /*
  65  * How much room to leave for headers:
  66  *  14: struct ether_header
  67  *  20: struct ip
  68  *   8: struct udphdr
  69  * That's 42 but let's pad it out to 48 bytes.
  70  */
  71 #define ETHER_SIZE 14
  72 #define HEADER_SIZE 48
  73
  74 extern  u_char bcea[6];
  75 extern  char rootpath[FNAME_SIZE];
  76 extern  char bootfile[FNAME_SIZE];
  77 extern  char hostname[FNAME_SIZE];
  78 extern  int hostnamelen;
  79 extern  char domainname[FNAME_SIZE];
  80 extern  int domainnamelen;
  81 extern  int netproto;
  82 extern  char ifname[IFNAME_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 swapip;
  88 extern  struct in_addr gateip;
  89 extern  struct in_addr nameip;
  90 extern  struct in_addr tftpip;
  91 extern  n_long netmask;
  92 extern  u_int intf_mtu;
  93
  94 extern  int debug;                      /* defined in the machdep sources */
  95
  96 extern struct iodesc sockets[SOPEN_MAX];
  97
  98 /* ARP/RevARP functions: */
  99 u_char  *arpwhohas(struct iodesc *, struct in_addr);
 100 void    arp_reply(struct iodesc *, void *);
 101 int     rarp_getipaddress(int);
 102
 103 /* Link functions: */
 104 ssize_t sendether(struct iodesc *d, void *pkt, size_t len,
 105                         u_char *dea, int etype);
 106 ssize_t readether(struct iodesc *, void **, void **, time_t, u_int16_t *);
 107
 108 ssize_t sendip(struct iodesc *, void *, size_t, uint8_t);
 109 ssize_t readip(struct iodesc *, void **, void **, time_t, uint8_t);
 110 ssize_t sendudp(struct iodesc *, void *, size_t);
 111 ssize_t readudp(struct iodesc *, void **, void **, time_t);
 112 ssize_t sendrecv(struct iodesc *,
 113                       ssize_t (*)(struct iodesc *, void *, size_t),
 114                         void *, size_t,
 115                         ssize_t (*)(struct iodesc *, void **, void **, time_t,
 116                           void *),
 117                         void **, void **, void *);
 118
 119 /* bootp/DHCP */
 120 void    bootp(int);
 121
 122 /* Utilities: */
 123 char    *ether_sprintf(u_char *);
 124 int     in_cksum(void *, int);
 125 char    *inet_ntoa(struct in_addr);
 126 char    *intoa(n_long);         /* similar to inet_ntoa */
 127 n_long  inet_addr(char *);
 128
 129 #endif  /* ! _STAND_NET_H */