/* * 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 * */ #ifndef __LWIP_IP_ADDR_H__ #define __LWIP_IP_ADDR_H__ #include "lwip/opt.h" #include "lwip/inet.h" #ifdef __cplusplus extern "C" { #endif #ifdef PACK_STRUCT_USE_INCLUDES # include "arch/bpstruct.h" #endif PACK_STRUCT_BEGIN struct ip_addr { PACK_STRUCT_FIELD(u32_t addr); } PACK_STRUCT_STRUCT; PACK_STRUCT_END #ifdef PACK_STRUCT_USE_INCLUDES # include "arch/epstruct.h" #endif /* * struct ipaddr2 is used in the definition of the ARP packet format in * order to support compilers that don't have structure packing. */ #ifdef PACK_STRUCT_USE_INCLUDES # include "arch/bpstruct.h" #endif PACK_STRUCT_BEGIN struct 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 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) /* 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)) & 0x80000000UL) == 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)) & 0xc0000000UL) == 0x80000000UL) #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)) & 0xe0000000UL) == 0xc0000000UL) #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) & 0xf0000000UL) == 0xe0000000UL) #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) & 0xf0000000UL) == 0xf0000000UL) #define IN_BADCLASS(a) (((u32_t)(a) & 0xf0000000UL) == 0xf0000000UL) #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(0xf0000000UL)) == ntohl(0xe0000000UL)) #define ip_addr_islinklocal(addr1) (((addr1)->addr & ntohl(0xffff0000UL)) == ntohl(0xa9fe0000UL)) #define ip_addr_debug_print(debug, ipaddr) \ LWIP_DEBUGF(debug, ("%"U16_F".%"U16_F".%"U16_F".%"U16_F, \ ipaddr != NULL ? \ (u16_t)(ntohl((ipaddr)->addr) >> 24) & 0xff : 0, \ ipaddr != NULL ? \ (u16_t)(ntohl((ipaddr)->addr) >> 16) & 0xff : 0, \ ipaddr != NULL ? \ (u16_t)(ntohl((ipaddr)->addr) >> 8) & 0xff : 0, \ ipaddr != NULL ? \ (u16_t)ntohl((ipaddr)->addr) & 0xff : 0)) /* 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(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 24) & 0xff) #define ip4_addr2(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 16) & 0xff) #define ip4_addr3(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 8) & 0xff) #define ip4_addr4(ipaddr) ((u16_t)(ntohl((ipaddr)->addr)) & 0xff) #ifdef __cplusplus } #endif #endif /* __LWIP_IP_ADDR_H__ */