2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
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.
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
27 * This file is part of the lwIP TCP/IP stack.
29 * Author: Adam Dunkels <adam@sics.se>
32 #ifndef __LWIP_IP_ADDR_H__
33 #define __LWIP_IP_ADDR_H__
35 #include "lwip/arch.h"
45 /* For compatibility with BSD code */
52 extern const struct ip_addr ip_addr_any;
53 extern const struct ip_addr ip_addr_broadcast;
55 /** IP_ADDR_ can be used as a fixed IP address
56 * for the wildcard and the broadcast address
58 #define IP_ADDR_ANY ((struct ip_addr *)&ip_addr_any)
59 #define IP_ADDR_BROADCAST ((struct ip_addr *)&ip_addr_broadcast)
61 #define INADDR_NONE ((u32_t) 0xffffffff) /* 255.255.255.255 */
62 #define INADDR_LOOPBACK ((u32_t) 0x7f000001) /* 127.0.0.1 */
64 /* Definitions of the bits in an Internet address integer.
66 On subnets, host and network parts are found according to
67 the subnet mask, not these masks. */
69 #define IN_CLASSA(a) ((((u32_t)(a)) & 0x80000000) == 0)
70 #define IN_CLASSA_NET 0xff000000
71 #define IN_CLASSA_NSHIFT 24
72 #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
73 #define IN_CLASSA_MAX 128
75 #define IN_CLASSB(a) ((((u32_t)(a)) & 0xc0000000) == 0x80000000)
76 #define IN_CLASSB_NET 0xffff0000
77 #define IN_CLASSB_NSHIFT 16
78 #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
79 #define IN_CLASSB_MAX 65536
81 #define IN_CLASSC(a) ((((u32_t)(a)) & 0xe0000000) == 0xc0000000)
82 #define IN_CLASSC_NET 0xffffff00
83 #define IN_CLASSC_NSHIFT 8
84 #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
86 #define IN_CLASSD(a) (((u32_t)(a) & 0xf0000000) == 0xe0000000)
87 #define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */
88 #define IN_CLASSD_NSHIFT 28 /* net and host fields, but */
89 #define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */
90 #define IN_MULTICAST(a) IN_CLASSD(a)
92 #define IN_EXPERIMENTAL(a) (((u32_t)(a) & 0xf0000000) == 0xf0000000)
93 #define IN_BADCLASS(a) (((u32_t)(a) & 0xf0000000) == 0xf0000000)
95 #define IN_LOOPBACKNET 127 /* official! */
98 #define IP4_ADDR(ipaddr, a,b,c,d) (ipaddr)->addr = htonl(((u32_t)(a & 0xff) << 24) | ((u32_t)(b & 0xff) << 16) | \
99 ((u32_t)(c & 0xff) << 8) | (u32_t)(d & 0xff))
101 #define ip_addr_set(dest, src) (dest)->addr = \
104 #define ip_addr_maskcmp(addr1, addr2, mask) (((addr1)->addr & \
108 #define ip_addr_cmp(addr1, addr2) ((addr1)->addr == (addr2)->addr)
110 #define ip_addr_isany(addr1) ((addr1) == NULL || (addr1)->addr == 0)
112 u8_t ip_addr_isbroadcast(struct ip_addr *, struct netif *);
114 #define ip_addr_ismulticast(addr1) (((addr1)->addr & ntohl(0xf0000000)) == ntohl(0xe0000000))
117 #define ip_addr_debug_print(debug, ipaddr) LWIP_DEBUGF(debug, ("%u.%u.%u.%u", \
118 ipaddr?(unsigned int)(ntohl((ipaddr)->addr) >> 24) & 0xff:0, \
119 ipaddr?(unsigned int)(ntohl((ipaddr)->addr) >> 16) & 0xff:0, \
120 ipaddr?(unsigned int)(ntohl((ipaddr)->addr) >> 8) & 0xff:0, \
121 ipaddr?(unsigned int)ntohl((ipaddr)->addr) & 0xff:0U))
123 /* cast to unsigned int, as it is used as argument to printf functions
124 * which expect integer arguments */
125 #define ip4_addr1(ipaddr) ((unsigned int)(ntohl((ipaddr)->addr) >> 24) & 0xff)
126 #define ip4_addr2(ipaddr) ((unsigned int)(ntohl((ipaddr)->addr) >> 16) & 0xff)
127 #define ip4_addr3(ipaddr) ((unsigned int)(ntohl((ipaddr)->addr) >> 8) & 0xff)
128 #define ip4_addr4(ipaddr) ((unsigned int)(ntohl((ipaddr)->addr)) & 0xff)
129 #endif /* __LWIP_IP_ADDR_H__ */