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/**
* @file
* IPv4 address API
*/
/*
* 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_HDR_IP4_ADDR_H
#define LWIP_HDR_IP4_ADDR_H
#include "lwip/opt.h"
#include "lwip/def.h"
#if LWIP_IPV4
#ifdef __cplusplus
extern "C" {
#endif
/** This is the aligned version of ip4_addr_t,
used as local variable, on the stack, etc. */
struct ip4_addr {
u32_t addr;
};
/** ip4_addr_t uses a struct for convenience only, so that the same defines can
* operate both on ip4_addr_t as well as on ip4_addr_p_t. */
typedef struct ip4_addr ip4_addr_t;
/* Forward declaration to not include netif.h */
struct netif;
/** 255.255.255.255 */
#define IPADDR_NONE ((u32_t)0xffffffffUL)
/** 127.0.0.1 */
#define IPADDR_LOOPBACK ((u32_t)0x7f000001UL)
/** 0.0.0.0 */
#define IPADDR_ANY ((u32_t)0x00000000UL)
/** 255.255.255.255 */
#define IPADDR_BROADCAST ((u32_t)0xffffffffUL)
/* 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 IP_CLASSA(a) ((((u32_t)(a)) & 0x80000000UL) == 0)
#define IP_CLASSA_NET 0xff000000
#define IP_CLASSA_NSHIFT 24
#define IP_CLASSA_HOST (0xffffffff & ~IP_CLASSA_NET)
#define IP_CLASSA_MAX 128
#define IP_CLASSB(a) ((((u32_t)(a)) & 0xc0000000UL) == 0x80000000UL)
#define IP_CLASSB_NET 0xffff0000
#define IP_CLASSB_NSHIFT 16
#define IP_CLASSB_HOST (0xffffffff & ~IP_CLASSB_NET)
#define IP_CLASSB_MAX 65536
#define IP_CLASSC(a) ((((u32_t)(a)) & 0xe0000000UL) == 0xc0000000UL)
#define IP_CLASSC_NET 0xffffff00
#define IP_CLASSC_NSHIFT 8
#define IP_CLASSC_HOST (0xffffffff & ~IP_CLASSC_NET)
#define IP_CLASSD(a) (((u32_t)(a) & 0xf0000000UL) == 0xe0000000UL)
#define IP_CLASSD_NET 0xf0000000 /* These ones aren't really */
#define IP_CLASSD_NSHIFT 28 /* net and host fields, but */
#define IP_CLASSD_HOST 0x0fffffff /* routing needn't know. */
#define IP_MULTICAST(a) IP_CLASSD(a)
#define IP_EXPERIMENTAL(a) (((u32_t)(a) & 0xf0000000UL) == 0xf0000000UL)
#define IP_BADCLASS(a) (((u32_t)(a) & 0xf0000000UL) == 0xf0000000UL)
#define IP_LOOPBACKNET 127 /* official! */
/** Set an IP address given by the four byte-parts */
#define IP4_ADDR(ipaddr, a,b,c,d) (ipaddr)->addr = PP_HTONL(LWIP_MAKEU32(a,b,c,d))
/** Copy IP address - faster than ip4_addr_set: no NULL check */
#define ip4_addr_copy(dest, src) ((dest).addr = (src).addr)
/** Safely copy one IP address to another (src may be NULL) */
#define ip4_addr_set(dest, src) ((dest)->addr = \
((src) == NULL ? 0 : \
(src)->addr))
/** Set complete address to zero */
#define ip4_addr_set_zero(ipaddr) ((ipaddr)->addr = 0)
/** Set address to IPADDR_ANY (no need for lwip_htonl()) */
#define ip4_addr_set_any(ipaddr) ((ipaddr)->addr = IPADDR_ANY)
/** Set address to loopback address */
#define ip4_addr_set_loopback(ipaddr) ((ipaddr)->addr = PP_HTONL(IPADDR_LOOPBACK))
/** Check if an address is in the loopback region */
#define ip4_addr_isloopback(ipaddr) (((ipaddr)->addr & PP_HTONL(IP_CLASSA_NET)) == PP_HTONL(((u32_t)IP_LOOPBACKNET) << 24))
/** Safely copy one IP address to another and change byte order
* from host- to network-order. */
#define ip4_addr_set_hton(dest, src) ((dest)->addr = \
((src) == NULL ? 0:\
lwip_htonl((src)->addr)))
/** IPv4 only: set the IP address given as an u32_t */
#define ip4_addr_set_u32(dest_ipaddr, src_u32) ((dest_ipaddr)->addr = (src_u32))
/** IPv4 only: get the IP address as an u32_t */
#define ip4_addr_get_u32(src_ipaddr) ((src_ipaddr)->addr)
/** Get the network address by combining host address with netmask */
#define ip4_addr_get_network(target, host, netmask) do { ((target)->addr = ((host)->addr) & ((netmask)->addr)); } while(0)
/**
* 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 ip4_addr_netcmp(addr1, addr2, mask) (((addr1)->addr & \
(mask)->addr) == \
((addr2)->addr & \
(mask)->addr))
#define ip4_addr_cmp(addr1, addr2) ((addr1)->addr == (addr2)->addr)
#define ip4_addr_isany_val(addr1) ((addr1).addr == IPADDR_ANY)
#define ip4_addr_isany(addr1) ((addr1) == NULL || ip4_addr_isany_val(*(addr1)))
#define ip4_addr_isbroadcast(addr1, netif) ip4_addr_isbroadcast_u32((addr1)->addr, netif)
u8_t ip4_addr_isbroadcast_u32(u32_t addr, const struct netif *netif);
#define ip_addr_netmask_valid(netmask) ip4_addr_netmask_valid((netmask)->addr)
u8_t ip4_addr_netmask_valid(u32_t netmask);
#define ip4_addr_ismulticast(addr1) (((addr1)->addr & PP_HTONL(0xf0000000UL)) == PP_HTONL(0xe0000000UL))
#define ip4_addr_islinklocal(addr1) (((addr1)->addr & PP_HTONL(0xffff0000UL)) == PP_HTONL(0xa9fe0000UL))
#define ip4_addr_debug_print_parts(debug, a, b, c, d) \
LWIP_DEBUGF(debug, ("%" U16_F ".%" U16_F ".%" U16_F ".%" U16_F, a, b, c, d))
#define ip4_addr_debug_print(debug, ipaddr) \
ip4_addr_debug_print_parts(debug, \
(u16_t)((ipaddr) != NULL ? ip4_addr1_16(ipaddr) : 0), \
(u16_t)((ipaddr) != NULL ? ip4_addr2_16(ipaddr) : 0), \
(u16_t)((ipaddr) != NULL ? ip4_addr3_16(ipaddr) : 0), \
(u16_t)((ipaddr) != NULL ? ip4_addr4_16(ipaddr) : 0))
#define ip4_addr_debug_print_val(debug, ipaddr) \
ip4_addr_debug_print_parts(debug, \
ip4_addr1_16(&(ipaddr)), \
ip4_addr2_16(&(ipaddr)), \
ip4_addr3_16(&(ipaddr)), \
ip4_addr4_16(&(ipaddr)))
/* Get one byte from the 4-byte address */
#define ip4_addr1(ipaddr) (((const u8_t*)(&(ipaddr)->addr))[0])
#define ip4_addr2(ipaddr) (((const u8_t*)(&(ipaddr)->addr))[1])
#define ip4_addr3(ipaddr) (((const u8_t*)(&(ipaddr)->addr))[2])
#define ip4_addr4(ipaddr) (((const u8_t*)(&(ipaddr)->addr))[3])
/* These are cast to u16_t, with the intent that they are often arguments
* to printf using the U16_F format from cc.h. */
#define ip4_addr1_16(ipaddr) ((u16_t)ip4_addr1(ipaddr))
#define ip4_addr2_16(ipaddr) ((u16_t)ip4_addr2(ipaddr))
#define ip4_addr3_16(ipaddr) ((u16_t)ip4_addr3(ipaddr))
#define ip4_addr4_16(ipaddr) ((u16_t)ip4_addr4(ipaddr))
#define IP4ADDR_STRLEN_MAX 16
/** For backwards compatibility */
#define ip_ntoa(ipaddr) ipaddr_ntoa(ipaddr)
u32_t ipaddr_addr(const char *cp);
int ip4addr_aton(const char *cp, ip4_addr_t *addr);
/** returns ptr to static buffer; not reentrant! */
char *ip4addr_ntoa(const ip4_addr_t *addr);
char *ip4addr_ntoa_r(const ip4_addr_t *addr, char *buf, int buflen);
#ifdef __cplusplus
}
#endif
#endif /* LWIP_IPV4 */
#endif /* LWIP_HDR_IP_ADDR_H */