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//
// ipaddr.h
//
// IP address functions
//
// Copyright (C) 2002 Michael Ringgaard. All rights reserved.
// Portions Copyright (C) 2001, Swedish Institute of Computer Science.
//
// 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. Neither the name of the project 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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 IPADDR_H
#define IPADDR_H

#define IP_ADDR_ANY       0
#define IP_ADDR_BROADCAST (&ip_addr_broadcast)

struct ip_addr {
  unsigned long addr;
};

extern struct ip_addr ip_addr_any;
extern struct ip_addr ip_addr_broadcast;

#define IP4_ADDR(ipaddr, a,b,c,d) (ipaddr)->addr = htonl(((unsigned long)(a & 0xFF) << 24) | ((unsigned long)(b & 0xFF) << 16) | ((unsigned long)(c & 0xFF) << 8) | (unsigned long)(d & 0xFF))

#define ip_addr_set(dest, src) (dest)->addr = ((src) == IP_ADDR_ANY ? IP_ADDR_ANY: ((struct ip_addr *) src)->addr)

#define ip_addr_maskcmp(addr1, addr2, mask) (((addr1)->addr & \
                                              (mask)->addr) == \
                                             ((addr2)->addr & \
                                              (mask)->addr))

#define ip_addr_cmp(addr1, addr2) ((addr1)->addr == (addr2)->addr)

#define ip_addr_isany(addr1) ((addr1) == NULL || (addr1)->addr == 0)

#define ip_addr_isbroadcast(addr1, mask) (((((addr1)->addr) & ~((mask)->addr)) == \
                                         (0xFFFFFFFF & ~((mask)->addr))) || \
                                         ((addr1)->addr == 0xFFFFFFFF) || \
                                         ((addr1)->addr == 0x00000000))

#define ip_addr_ismulticast(addr1) (((addr1)->addr & NTOHL(0xF0000000)) == NTOHL(0xE0000000))
                                   
#define ip_addr_debug_print(ipaddr)  kprintf("%d.%d.%d.%d", \
                    (ntohl((ipaddr)->addr) >> 24) & 0xFF, \
                    (ntohl((ipaddr)->addr) >> 16) & 0xFF, \
                    (ntohl((ipaddr)->addr) >> 8) & 0xFF, \
                    ntohl((ipaddr)->addr) & 0xFF)

#define ip4_addr1(ipaddr) ((unsigned char)(ntohl((ipaddr)->addr) >> 24) & 0xFF)
#define ip4_addr2(ipaddr) ((unsigned char)(ntohl((ipaddr)->addr) >> 16) & 0xFF)
#define ip4_addr3(ipaddr) ((unsigned char)(ntohl((ipaddr)->addr) >> 8) & 0xFF)
#define ip4_addr4(ipaddr) ((unsigned char)(ntohl((ipaddr)->addr)) & 0xFF)

#endif