/* * Copyright (c) 2001-2004 Swedish Institute of Computer Science. * All rights reserved. * * 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. The name of the author may not be used to endorse or promote products *    derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. * * This file is part of the lwIP TCP/IP stack. * * Author: Adam Dunkels <adam@sics.se> * */#ifndef __LWIP_IP_ADDR_H__#define __LWIP_IP_ADDR_H__#include "lwip/arch.h"#ifdef PACK_STRUCT_USE_INCLUDES#  include "arch/bpstruct.h"#endifPACK_STRUCT_BEGINstruct ip_addr {  PACK_STRUCT_FIELD(u32_t addr);} PACK_STRUCT_STRUCT;PACK_STRUCT_END#ifdef PACK_STRUCT_USE_INCLUDES#  include "arch/epstruct.h"#endif#ifdef PACK_STRUCT_USE_INCLUDES#  include "arch/bpstruct.h"#endifPACK_STRUCT_BEGINstruct ip_addr2 {  PACK_STRUCT_FIELD(u16_t addrw[2]);} PACK_STRUCT_STRUCT;PACK_STRUCT_END#ifdef PACK_STRUCT_USE_INCLUDES#  include "arch/epstruct.h"#endif/* For compatibility with BSD code */struct in_addr {  u32_t s_addr;};struct netif;extern const struct ip_addr ip_addr_any;extern const struct ip_addr ip_addr_broadcast;/** IP_ADDR_ can be used as a fixed IP address *  for the wildcard and the broadcast address */#define IP_ADDR_ANY ((struct ip_addr *)&ip_addr_any)#define IP_ADDR_BROADCAST ((struct ip_addr *)&ip_addr_broadcast)#define INADDR_NONE    ((u32_t) 0xffffffff)  /* 255.255.255.255 */#define INADDR_LOOPBACK    ((u32_t) 0x7f000001)  /* 127.0.0.1 *//* Definitions of the bits in an Internet address integer.   On subnets, host and network parts are found according to   the subnet mask, not these masks.  */#define  IN_CLASSA(a)    ((((u32_t)(a)) & 0x80000000) == 0)#define  IN_CLASSA_NET    0xff000000#define  IN_CLASSA_NSHIFT  24#define  IN_CLASSA_HOST    (0xffffffff & ~IN_CLASSA_NET)#define  IN_CLASSA_MAX    128#define  IN_CLASSB(a)    ((((u32_t)(a)) & 0xc0000000) == 0x80000000)#define  IN_CLASSB_NET    0xffff0000#define  IN_CLASSB_NSHIFT  16#define  IN_CLASSB_HOST    (0xffffffff & ~IN_CLASSB_NET)#define  IN_CLASSB_MAX    65536#define  IN_CLASSC(a)    ((((u32_t)(a)) & 0xe0000000) == 0xc0000000)#define  IN_CLASSC_NET    0xffffff00#define  IN_CLASSC_NSHIFT  8#define  IN_CLASSC_HOST    (0xffffffff & ~IN_CLASSC_NET)#define IN_CLASSD(a)        (((u32_t)(a) & 0xf0000000) == 0xe0000000)#define IN_CLASSD_NET       0xf0000000  /* These ones aren't really */#define IN_CLASSD_NSHIFT    28      /* net and host fields, but */#define IN_CLASSD_HOST      0x0fffffff  /* routing needn't know.    */#define IN_MULTICAST(a)     IN_CLASSD(a)#define IN_EXPERIMENTAL(a)  (((u32_t)(a) & 0xf0000000) == 0xf0000000)#define IN_BADCLASS(a)      (((u32_t)(a) & 0xf0000000) == 0xf0000000)#define IN_LOOPBACKNET      127         /* official! */#define IP4_ADDR(ipaddr, a,b,c,d) (ipaddr)->addr = htonl(((u32_t)(a & 0xff) << 24) | ((u32_t)(b & 0xff) << 16) | \                                                         ((u32_t)(c & 0xff) << 8) | (u32_t)(d & 0xff))#define ip_addr_set(dest, src) (dest)->addr = \                               ((src) == NULL? 0:\                               (src)->addr)/** * Determine if two address are on the same network. * * @arg addr1 IP address 1 * @arg addr2 IP address 2 * @arg mask network identifier mask * @return !0 if the network identifiers of both address match */#define ip_addr_netcmp(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)u8_t ip_addr_isbroadcast(struct ip_addr *, struct netif *);#define ip_addr_ismulticast(addr1) (((addr1)->addr & ntohl(0xf0000000)) == ntohl(0xe0000000))#define ip_addr_debug_print(debug, ipaddr) LWIP_DEBUGF(debug, ("%u.%u.%u.%u", \        ipaddr?(unsigned int)(ntohl((ipaddr)->addr) >> 24) & 0xff:0, \        ipaddr?(unsigned int)(ntohl((ipaddr)->addr) >> 16) & 0xff:0, \        ipaddr?(unsigned int)(ntohl((ipaddr)->addr) >> 8) & 0xff:0, \        ipaddr?(unsigned int)ntohl((ipaddr)->addr) & 0xff:0U))/* cast to unsigned int, as it is used as argument to printf functions * which expect integer arguments */#define ip4_addr1(ipaddr) ((unsigned int)(ntohl((ipaddr)->addr) >> 24) & 0xff)#define ip4_addr2(ipaddr) ((unsigned int)(ntohl((ipaddr)->addr) >> 16) & 0xff)#define ip4_addr3(ipaddr) ((unsigned int)(ntohl((ipaddr)->addr) >> 8) & 0xff)#define ip4_addr4(ipaddr) ((unsigned int)(ntohl((ipaddr)->addr)) & 0xff)#endif /* __LWIP_IP_ADDR_H__ */