# ip_addr.h

    00001 /*
    00002  * Copyright (c) 2001, Swedish Institute of Computer Science.
    00003  * All rights reserved.
    00004  *
    00005  * Redistribution and use in source and binary forms, with or without
    00006  * modification, are permitted provided that the following conditions
    00007  * are met:
    00008  * 1. Redistributions of source code must retain the above copyright
    00009  *    notice, this list of conditions and the following disclaimer.
    00010  * 2. Redistributions in binary form must reproduce the above copyright
    00011  *    notice, this list of conditions and the following disclaimer in the
    00012  *    documentation and/or other materials provided with the distribution.
    00013  * 3. Neither the name of the Institute nor the names of its contributors
    00014  *    may be used to endorse or promote products derived from this software
    00015  *    without specific prior written permission.
    00016  *
    00017  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
    00018  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    00020  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
    00021  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    00022  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
    00023  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    00024  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    00025  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    00026  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    00027  * SUCH DAMAGE.
    00028  *
    00029  * This file is part of the lwIP TCP/IP stack.
    00030  *
    00031  * Author: Adam Dunkels <adam@sics.se>
    00032  *
    00033  * $Id$
    00034  */
    00035 #ifndef __LWIP_IP_ADDR_H__
    00036 #define __LWIP_IP_ADDR_H__
    00037
    00038 #include "net/arch.h"
    00039
    00040 #define IP_ADDR_ANY 0
    00041
    00042 #define IP_ADDR_BROADCAST (&ip_addr_broadcast)
    00043
    00044 PACK_STRUCT_BEGIN
    00045 struct ip_addr {
    00046   PACK_STRUCT_FIELD(uInt32 addr);
    00047 } PACK_STRUCT_STRUCT;
    00048 PACK_STRUCT_END
    00049
    00050 extern struct ip_addr ip_addr_broadcast;
    00051
    00052 #define IP4_ADDR(ipaddr, a,b,c,d) (ipaddr)->addr = htonl(((uInt32)(a & 0xff) << 24) | ((uInt32)(b & 0xff) << 16) | \
    00053                                                          ((uInt32)(c & 0xff) << 8) | (uInt32)(d & 0xff))
    00054
    00055 #define ip_addr_set(dest, src) (dest)->addr = \
    00056                                ((src) == IP_ADDR_ANY? IP_ADDR_ANY:\
    00057                                 ((struct ip_addr *)src)->addr)
    00058 #define ip_addr_maskcmp(addr1, addr2, mask) (((addr1)->addr & \
    00059                                               (mask)->addr) == \
    00060                                              ((addr2)->addr & \
    00061                                               (mask)->addr))
    00062 #define ip_addr_cmp(addr1, addr2) ((addr1)->addr == (addr2)->addr)
    00063
    00064 #define ip_addr_isany(addr1) ((addr1) == NULL || (addr1)->addr == 0)
    00065
    00066 #define ip_addr_isbroadcast(addr1, mask) (((((addr1)->addr) & ~((mask)->addr)) == \
    00067                                          (0xffffffff & ~((mask)->addr))) || \
    00068                                          ((addr1)->addr == 0xffffffff) || \
    00069                                          ((addr1)->addr == 0x00000000))
    00070
    00071
    00072 #define ip_addr_ismulticast(addr1) (((addr1)->addr & ntohl(0xf0000000)) == ntohl(0xe0000000))
    00073
    00074
    00075 #define ip_addr_debug_print(ipaddr) kprintf("%d.%d.%d.%d", \
    00076                     (uInt8)(ntohl((ipaddr)->addr) >> 24) & 0xff, \
    00077                     (uInt8)(ntohl((ipaddr)->addr) >> 16) & 0xff, \
    00078                     (uInt8)(ntohl((ipaddr)->addr) >> 8) & 0xff, \
    00079                     (uInt8)ntohl((ipaddr)->addr) & 0xff)
    00080
    00081
    00082 #define ip4_addr1(ipaddr) ((uInt8)(ntohl((ipaddr)->addr) >> 24) & 0xff)
    00083 #define ip4_addr2(ipaddr) ((uInt8)(ntohl((ipaddr)->addr) >> 16) & 0xff)
    00084 #define ip4_addr3(ipaddr) ((uInt8)(ntohl((ipaddr)->addr) >> 8) & 0xff)
    00085 #define ip4_addr4(ipaddr) ((uInt8)(ntohl((ipaddr)->addr)) & 0xff)
    00086 #endif /* __LWIP_IP_ADDR_H__ */
    00087
    00088
    00089
    00090
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    00092