| | 1 | /* |
| | 2 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science. |
| | 3 | * All rights reserved. |
| | 4 | * |
| | 5 | * Redistribution and use in source and binary forms, with or without modification, |
| | 6 | * are permitted provided that the following conditions are met: |
| | 7 | * |
| | 8 | * 1. Redistributions of source code must retain the above copyright notice, |
| | 9 | * this list of conditions and the following disclaimer. |
| | 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| | 11 | * this list of conditions and the following disclaimer in the documentation |
| | 12 | * and/or other materials provided with the distribution. |
| | 13 | * 3. The name of the author may not be used to endorse or promote products |
| | 14 | * derived from this software without specific prior written permission. |
| | 15 | * |
| | 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| | 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| | 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
| | 19 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| | 20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
| | 21 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| | 22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| | 23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| | 24 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
| | 25 | * OF SUCH DAMAGE. |
| | 26 | * |
| | 27 | * This file is part of the lwIP TCP/IP stack. |
| | 28 | * |
| | 29 | * Author: Adam Dunkels <adam@sics.se> |
| | 30 | * |
| | 31 | */ |
| | 32 | #ifndef __LWIP_IP_ADDR_H__ |
| | 33 | #define __LWIP_IP_ADDR_H__ |
| | 34 | |
| | 35 | #include "lwip/opt.h" |
| | 36 | |
| | 37 | #ifdef __cplusplus |
| | 38 | extern "C" { |
| | 39 | #endif |
| | 40 | |
| | 41 | #ifdef PACK_STRUCT_USE_INCLUDES |
| | 42 | # include "arch/bpstruct.h" |
| | 43 | #endif |
| | 44 | PACK_STRUCT_BEGIN |
| | 45 | struct ip_addr { |
| | 46 | PACK_STRUCT_FIELD(u32_t addr); |
| | 47 | } PACK_STRUCT_STRUCT; |
| | 48 | PACK_STRUCT_END |
| | 49 | #ifdef PACK_STRUCT_USE_INCLUDES |
| | 50 | # include "arch/epstruct.h" |
| | 51 | #endif |
| | 52 | |
| | 53 | /* |
| | 54 | * struct ipaddr2 is used in the definition of the ARP packet format in |
| | 55 | * order to support compilers that don't have structure packing. |
| | 56 | */ |
| | 57 | #ifdef PACK_STRUCT_USE_INCLUDES |
| | 58 | # include "arch/bpstruct.h" |
| | 59 | #endif |
| | 60 | PACK_STRUCT_BEGIN |
| | 61 | struct ip_addr2 { |
| | 62 | PACK_STRUCT_FIELD(u16_t addrw[2]); |
| | 63 | } PACK_STRUCT_STRUCT; |
| | 64 | PACK_STRUCT_END |
| | 65 | #ifdef PACK_STRUCT_USE_INCLUDES |
| | 66 | # include "arch/epstruct.h" |
| | 67 | #endif |
| | 68 | |
| | 69 | /* For compatibility with BSD code */ |
| | 70 | struct in_addr { |
| | 71 | u32_t s_addr; |
| | 72 | }; |
| | 73 | |
| | 74 | struct netif; |
| | 75 | |
| | 76 | extern const struct ip_addr ip_addr_any; |
| | 77 | extern const struct ip_addr ip_addr_broadcast; |
| | 78 | |
| | 79 | /** IP_ADDR_ can be used as a fixed IP address |
| | 80 | * for the wildcard and the broadcast address |
| | 81 | */ |
| | 82 | #define IP_ADDR_ANY ((struct ip_addr *)&ip_addr_any) |
| | 83 | #define IP_ADDR_BROADCAST ((struct ip_addr *)&ip_addr_broadcast) |
| | 84 | |
| | 85 | #define INADDR_NONE ((u32_t)0xffffffffUL) /* 255.255.255.255 */ |
| | 86 | #define INADDR_LOOPBACK ((u32_t)0x7f000001UL) /* 127.0.0.1 */ |
| | 87 | |
| | 88 | /* Definitions of the bits in an Internet address integer. |
| | 89 | |
| | 90 | On subnets, host and network parts are found according to |
| | 91 | the subnet mask, not these masks. */ |
| | 92 | |
| | 93 | #define IN_CLASSA(a) ((((u32_t)(a)) & 0x80000000UL) == 0) |
| | 94 | #define IN_CLASSA_NET 0xff000000 |
| | 95 | #define IN_CLASSA_NSHIFT 24 |
| | 96 | #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET) |
| | 97 | #define IN_CLASSA_MAX 128 |
| | 98 | |
| | 99 | #define IN_CLASSB(a) ((((u32_t)(a)) & 0xc0000000UL) == 0x80000000UL) |
| | 100 | #define IN_CLASSB_NET 0xffff0000 |
| | 101 | #define IN_CLASSB_NSHIFT 16 |
| | 102 | #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET) |
| | 103 | #define IN_CLASSB_MAX 65536 |
| | 104 | |
| | 105 | #define IN_CLASSC(a) ((((u32_t)(a)) & 0xe0000000UL) == 0xc0000000UL) |
| | 106 | #define IN_CLASSC_NET 0xffffff00 |
| | 107 | #define IN_CLASSC_NSHIFT 8 |
| | 108 | #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET) |
| | 109 | |
| | 110 | #define IN_CLASSD(a) (((u32_t)(a) & 0xf0000000UL) == 0xe0000000UL) |
| | 111 | #define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */ |
| | 112 | #define IN_CLASSD_NSHIFT 28 /* net and host fields, but */ |
| | 113 | #define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */ |
| | 114 | #define IN_MULTICAST(a) IN_CLASSD(a) |
| | 115 | |
| | 116 | #define IN_EXPERIMENTAL(a) (((u32_t)(a) & 0xf0000000UL) == 0xf0000000UL) |
| | 117 | #define IN_BADCLASS(a) (((u32_t)(a) & 0xf0000000UL) == 0xf0000000UL) |
| | 118 | |
| | 119 | #define IN_LOOPBACKNET 127 /* official! */ |
| | 120 | |
| | 121 | #define IP4_ADDR(ipaddr, a,b,c,d) \ |
| | 122 | (ipaddr)->addr = htonl(((u32_t)((a) & 0xff) << 24) | \ |
| | 123 | ((u32_t)((b) & 0xff) << 16) | \ |
| | 124 | ((u32_t)((c) & 0xff) << 8) | \ |
| | 125 | (u32_t)((d) & 0xff)) |
| | 126 | |
| | 127 | #define ip_addr_set(dest, src) (dest)->addr = \ |
| | 128 | ((src) == NULL? 0:\ |
| | 129 | (src)->addr) |
| | 130 | /** |
| | 131 | * Determine if two address are on the same network. |
| | 132 | * |
| | 133 | * @arg addr1 IP address 1 |
| | 134 | * @arg addr2 IP address 2 |
| | 135 | * @arg mask network identifier mask |
| | 136 | * @return !0 if the network identifiers of both address match |
| | 137 | */ |
| | 138 | #define ip_addr_netcmp(addr1, addr2, mask) (((addr1)->addr & \ |
| | 139 | (mask)->addr) == \ |
| | 140 | ((addr2)->addr & \ |
| | 141 | (mask)->addr)) |
| | 142 | #define ip_addr_cmp(addr1, addr2) ((addr1)->addr == (addr2)->addr) |
| | 143 | |
| | 144 | #define ip_addr_isany(addr1) ((addr1) == NULL || (addr1)->addr == 0) |
| | 145 | |
| | 146 | u8_t ip_addr_isbroadcast(struct ip_addr *, struct netif *); |
| | 147 | |
| | 148 | #define ip_addr_ismulticast(addr1) (((addr1)->addr & ntohl(0xf0000000UL)) == ntohl(0xe0000000UL)) |
| | 149 | |
| | 150 | #define ip_addr_islinklocal(addr1) (((addr1)->addr & ntohl(0xffff0000UL)) == ntohl(0xa9fe0000UL)) |
| | 151 | |
| | 152 | #define ip_addr_debug_print(debug, ipaddr) \ |
| | 153 | LWIP_DEBUGF(debug, ("%"U16_F".%"U16_F".%"U16_F".%"U16_F, \ |
| | 154 | ipaddr ? (u16_t)(ntohl((ipaddr)->addr) >> 24) & 0xff : 0, \ |
| | 155 | ipaddr ? (u16_t)(ntohl((ipaddr)->addr) >> 16) & 0xff : 0, \ |
| | 156 | ipaddr ? (u16_t)(ntohl((ipaddr)->addr) >> 8) & 0xff : 0, \ |
| | 157 | ipaddr ? (u16_t)ntohl((ipaddr)->addr) & 0xff : 0)) |
| | 158 | |
| | 159 | /* These are cast to u16_t, with the intent that they are often arguments |
| | 160 | * to printf using the U16_F format from cc.h. */ |
| | 161 | #define ip4_addr1(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 24) & 0xff) |
| | 162 | #define ip4_addr2(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 16) & 0xff) |
| | 163 | #define ip4_addr3(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 8) & 0xff) |
| | 164 | #define ip4_addr4(ipaddr) ((u16_t)(ntohl((ipaddr)->addr)) & 0xff) |
| | 165 | |
| | 166 | #ifdef __cplusplus |
| | 167 | } |
| | 168 | #endif |
| | 169 | |
| | 170 | #endif /* __LWIP_IP_ADDR_H__ */ |
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