FreeBSD/Linux Kernel Cross Reference
sys/lib/libsa/net.h

     /*      $NetBSD: net.h,v 1.14 2003/03/19 17:19:32 drochner Exp $        */
     
     /*
      * Copyright (c) 1993 Adam Glass 
      * Copyright (c) 1992 Regents of the University of California.
      * All rights reserved.
      *
      * This software was developed by the Computer Systems Engineering group
      * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
     * contributed to Berkeley.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the University of
     *      California, Lawrence Berkeley Laboratory and its contributors.
     * 4. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    
    #ifndef _KERNEL /* XXX - see <netinet/in.h> */
    #undef __IPADDR
    #define __IPADDR(x)     htonl((u_int32_t)(x))
    #endif
    
    #include "iodesc.h"
    
    #define BA { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }
    
    /* Returns true if n_long's on the same net */
    #define SAMENET(a1, a2, m) ((a1.s_addr & m) == (a2.s_addr & m))
    
    #define MACPY(s, d) bcopy((char *)s, (char *)d, 6)
    
    #define MAXTMO 20       /* seconds */
    #define MINTMO 2        /* seconds */
    
    #define FNAME_SIZE 128
    #define IFNAME_SIZE 16
    #define RECV_SIZE 1536  /* XXX delete this */
    
    /*
     * How much room to leave for headers:
     *  14: struct ether_header
     *  20: struct ip
     *   8: struct udphdr
     * That's 42 but let's pad it out to 48 bytes.
     */
    #define ETHER_SIZE 14
    #define HEADER_SIZE 48
    
    extern  u_char bcea[6];
    extern  char rootpath[FNAME_SIZE];
    extern  char bootfile[FNAME_SIZE];
    extern  char hostname[FNAME_SIZE];
    
    /* All of these are in network order. */
    extern  struct in_addr myip;
    extern  struct in_addr rootip;
    extern  struct in_addr gateip;
    extern  n_long netmask;
    
    extern  int debug;                      /* defined in the machdep sources */
    
    /* ARP/RevARP functions: */
    u_char  *arpwhohas __P((struct iodesc *, struct in_addr));
    void    arp_reply __P((struct iodesc *, void *));
    int     rarp_getipaddress __P((int));
    
    /* Link functions: */
    ssize_t sendether __P((struct iodesc *d, void *pkt, size_t len,
                            u_char *dea, int etype));
    ssize_t readether __P((struct iodesc *d, void *pkt, size_t len,
                            time_t tleft, u_int16_t *etype));
    
    ssize_t sendudp __P((struct iodesc *, void *, size_t));
    ssize_t readudp __P((struct iodesc *, void *, size_t, time_t));
    ssize_t sendrecv __P((struct iodesc *,
                          ssize_t (*)(struct iodesc *, void *, size_t),
                           void *, size_t,
                           ssize_t (*)(struct iodesc *, void *, size_t, time_t),
                           void *, size_t));
   
   /* Utilities: */
   char    *ether_sprintf __P((u_char *));
   int     in_cksum __P((void *, int));
   int     in_cksum __P((void *, int));
   
   /* Machine-dependent functions: */
   time_t  getsecs __P((void));

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