2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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3 * All rights reserved.
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5 * Redistribution and use in source and binary forms, with or without modification,
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6 * are permitted provided that the following conditions are met:
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8 * 1. Redistributions of source code must retain the above copyright notice,
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9 * this list of conditions and the following disclaimer.
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10 * 2. Redistributions in binary form must reproduce the above copyright notice,
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11 * this list of conditions and the following disclaimer in the documentation
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12 * and/or other materials provided with the distribution.
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13 * 3. The name of the author may not be used to endorse or promote products
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14 * derived from this software without specific prior written permission.
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16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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27 * This file is part of the lwIP TCP/IP stack.
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29 * Author: Adam Dunkels <adam@sics.se>
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32 #ifndef __LWIP_IP_ADDR_H__
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33 #define __LWIP_IP_ADDR_H__
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35 #include "lwip/arch.h"
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37 #ifdef PACK_STRUCT_USE_INCLUDES
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38 # include "arch/bpstruct.h"
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42 PACK_STRUCT_FIELD(u32_t addr);
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43 } PACK_STRUCT_STRUCT;
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45 #ifdef PACK_STRUCT_USE_INCLUDES
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46 # include "arch/epstruct.h"
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50 * struct ipaddr2 is used in the definition of the ARP packet format in
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51 * order to support compilers that don't have structure packing.
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53 #ifdef PACK_STRUCT_USE_INCLUDES
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54 # include "arch/bpstruct.h"
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58 PACK_STRUCT_FIELD(u16_t addrw[2]);
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59 } PACK_STRUCT_STRUCT;
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61 #ifdef PACK_STRUCT_USE_INCLUDES
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62 # include "arch/epstruct.h"
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65 /* For compatibility with BSD code */
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72 extern const struct ip_addr ip_addr_any;
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73 extern const struct ip_addr ip_addr_broadcast;
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75 /** IP_ADDR_ can be used as a fixed IP address
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76 * for the wildcard and the broadcast address
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78 #define IP_ADDR_ANY ((struct ip_addr *)&ip_addr_any)
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79 #define IP_ADDR_BROADCAST ((struct ip_addr *)&ip_addr_broadcast)
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81 #define INADDR_NONE ((u32_t)0xffffffff) /* 255.255.255.255 */
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82 #define INADDR_LOOPBACK ((u32_t)0x7f000001) /* 127.0.0.1 */
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84 /* Definitions of the bits in an Internet address integer.
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86 On subnets, host and network parts are found according to
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87 the subnet mask, not these masks. */
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89 #define IN_CLASSA(a) ((((u32_t)(a)) & 0x80000000) == 0)
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90 #define IN_CLASSA_NET 0xff000000
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91 #define IN_CLASSA_NSHIFT 24
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92 #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
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93 #define IN_CLASSA_MAX 128
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95 #define IN_CLASSB(a) ((((u32_t)(a)) & 0xc0000000) == 0x80000000)
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96 #define IN_CLASSB_NET 0xffff0000
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97 #define IN_CLASSB_NSHIFT 16
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98 #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
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99 #define IN_CLASSB_MAX 65536
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101 #define IN_CLASSC(a) ((((u32_t)(a)) & 0xe0000000) == 0xc0000000)
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102 #define IN_CLASSC_NET 0xffffff00
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103 #define IN_CLASSC_NSHIFT 8
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104 #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
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106 #define IN_CLASSD(a) (((u32_t)(a) & 0xf0000000) == 0xe0000000)
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107 #define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */
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108 #define IN_CLASSD_NSHIFT 28 /* net and host fields, but */
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109 #define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */
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110 #define IN_MULTICAST(a) IN_CLASSD(a)
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112 #define IN_EXPERIMENTAL(a) (((u32_t)(a) & 0xf0000000) == 0xf0000000)
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113 #define IN_BADCLASS(a) (((u32_t)(a) & 0xf0000000) == 0xf0000000)
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115 #define IN_LOOPBACKNET 127 /* official! */
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117 #define IP4_ADDR(ipaddr, a,b,c,d) \
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118 (ipaddr)->addr = htonl(((u32_t)((a) & 0xff) << 24) | \
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119 ((u32_t)((b) & 0xff) << 16) | \
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120 ((u32_t)((c) & 0xff) << 8) | \
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121 (u32_t)((d) & 0xff))
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123 #define ip_addr_set(dest, src) (dest)->addr = \
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124 ((src) == NULL? 0:\
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127 * Determine if two address are on the same network.
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129 * @arg addr1 IP address 1
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130 * @arg addr2 IP address 2
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131 * @arg mask network identifier mask
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132 * @return !0 if the network identifiers of both address match
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134 #define ip_addr_netcmp(addr1, addr2, mask) (((addr1)->addr & \
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138 #define ip_addr_cmp(addr1, addr2) ((addr1)->addr == (addr2)->addr)
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140 #define ip_addr_isany(addr1) ((addr1) == NULL || (addr1)->addr == 0)
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142 u8_t ip_addr_isbroadcast(struct ip_addr *, struct netif *);
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144 #define ip_addr_ismulticast(addr1) (((addr1)->addr & ntohl(0xf0000000)) == ntohl(0xe0000000))
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146 #define ip_addr_debug_print(debug, ipaddr) \
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147 LWIP_DEBUGF(debug, ("%"U16_F".%"U16_F".%"U16_F".%"U16_F, \
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148 ipaddr ? (u16_t)(ntohl((ipaddr)->addr) >> 24) & 0xff : 0, \
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149 ipaddr ? (u16_t)(ntohl((ipaddr)->addr) >> 16) & 0xff : 0, \
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150 ipaddr ? (u16_t)(ntohl((ipaddr)->addr) >> 8) & 0xff : 0, \
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151 ipaddr ? (u16_t)ntohl((ipaddr)->addr) & 0xff : 0))
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153 /* These are cast to u16_t, with the intent that they are often arguments
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154 * to printf using the U16_F format from cc.h. */
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155 #define ip4_addr1(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 24) & 0xff)
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156 #define ip4_addr2(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 16) & 0xff)
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157 #define ip4_addr3(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 8) & 0xff)
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158 #define ip4_addr4(ipaddr) ((u16_t)(ntohl((ipaddr)->addr)) & 0xff)
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160 #endif /* __LWIP_IP_ADDR_H__ */
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