FreeRTOS/Common/ethernet/lwIP_130/src/include/ipv4/lwip/ip_addr.h

   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 #if (defined(__MWERKS__)  || defined(__CWCC__))
  46         #pragma options align= packed
  47 #endif
  48 struct ip_addr {
  49   PACK_STRUCT_FIELD(u32_t addr);
  50 } PACK_STRUCT_STRUCT;
  51 PACK_STRUCT_END
  52 #ifdef PACK_STRUCT_USE_INCLUDES
  53 #  include "arch/epstruct.h"
  54 #endif
  55
  56 /*
  57  * struct ipaddr2 is used in the definition of the ARP packet format in
  58  * order to support compilers that don't have structure packing.
  59  */
  60 #ifdef PACK_STRUCT_USE_INCLUDES
  61 #  include "arch/bpstruct.h"
  62 #endif
  63 PACK_STRUCT_BEGIN
  64 #if (defined(__MWERKS__)  || defined(__CWCC__))
  65         #pragma options align= packed
  66 #endif
  67 struct ip_addr2 {
  68   PACK_STRUCT_FIELD(u16_t addrw[2]);
  69 } PACK_STRUCT_STRUCT;
  70 PACK_STRUCT_END
  71 #ifdef PACK_STRUCT_USE_INCLUDES
  72 #  include "arch/epstruct.h"
  73 #endif
  74
  75 /* For compatibility with BSD code */
  76 struct in_addr {
  77   u32_t s_addr;
  78 };
  79
  80 struct netif;
  81
  82 extern const struct ip_addr ip_addr_any;
  83 extern const struct ip_addr ip_addr_broadcast;
  84
  85 /** IP_ADDR_ can be used as a fixed IP address
  86  *  for the wildcard and the broadcast address
  87  */
  88 #define IP_ADDR_ANY         ((struct ip_addr *)&ip_addr_any)
  89 #define IP_ADDR_BROADCAST   ((struct ip_addr *)&ip_addr_broadcast)
  90
  91 #define INADDR_NONE         ((u32_t)0xffffffffUL)  /* 255.255.255.255 */
  92 #define INADDR_LOOPBACK     ((u32_t)0x7f000001UL)  /* 127.0.0.1 */
  93
  94 /* Definitions of the bits in an Internet address integer.
  95
  96    On subnets, host and network parts are found according to
  97    the subnet mask, not these masks.  */
  98
  99 #define IN_CLASSA(a)        ((((u32_t)(a)) & 0x80000000UL) == 0)
 100 #define IN_CLASSA_NET       0xff000000
 101 #define IN_CLASSA_NSHIFT    24
 102 #define IN_CLASSA_HOST      (0xffffffff & ~IN_CLASSA_NET)
 103 #define IN_CLASSA_MAX       128
 104
 105 #define IN_CLASSB(a)        ((((u32_t)(a)) & 0xc0000000UL) == 0x80000000UL)
 106 #define IN_CLASSB_NET       0xffff0000
 107 #define IN_CLASSB_NSHIFT    16
 108 #define IN_CLASSB_HOST      (0xffffffff & ~IN_CLASSB_NET)
 109 #define IN_CLASSB_MAX       65536
 110
 111 #define IN_CLASSC(a)        ((((u32_t)(a)) & 0xe0000000UL) == 0xc0000000UL)
 112 #define IN_CLASSC_NET       0xffffff00
 113 #define IN_CLASSC_NSHIFT    8
 114 #define IN_CLASSC_HOST      (0xffffffff & ~IN_CLASSC_NET)
 115
 116 #define IN_CLASSD(a)        (((u32_t)(a) & 0xf0000000UL) == 0xe0000000UL)
 117 #define IN_CLASSD_NET       0xf0000000          /* These ones aren't really */
 118 #define IN_CLASSD_NSHIFT    28                  /*   net and host fields, but */
 119 #define IN_CLASSD_HOST      0x0fffffff          /*   routing needn't know. */
 120 #define IN_MULTICAST(a)     IN_CLASSD(a)
 121
 122 #define IN_EXPERIMENTAL(a)  (((u32_t)(a) & 0xf0000000UL) == 0xf0000000UL)
 123 #define IN_BADCLASS(a)      (((u32_t)(a) & 0xf0000000UL) == 0xf0000000UL)
 124
 125 #define IN_LOOPBACKNET      127                 /* official! */
 126
 127 #define IP4_ADDR(ipaddr, a,b,c,d) \
 128         (ipaddr)->addr = htonl(((u32_t)((a) & 0xff) << 24) | \
 129                                ((u32_t)((b) & 0xff) << 16) | \
 130                                ((u32_t)((c) & 0xff) << 8) | \
 131                                 (u32_t)((d) & 0xff))
 132
 133 #define ip_addr_set(dest, src) (dest)->addr = \
 134                                ((src) == NULL? 0:\
 135                                (src)->addr)
 136 /**
 137  * Determine if two address are on the same network.
 138  *
 139  * @arg addr1 IP address 1
 140  * @arg addr2 IP address 2
 141  * @arg mask network identifier mask
 142  * @return !0 if the network identifiers of both address match
 143  */
 144 #define ip_addr_netcmp(addr1, addr2, mask) (((addr1)->addr & \
 145                                               (mask)->addr) == \
 146                                              ((addr2)->addr & \
 147                                               (mask)->addr))
 148 #define ip_addr_cmp(addr1, addr2) ((addr1)->addr == (addr2)->addr)
 149
 150 #define ip_addr_isany(addr1) ((addr1) == NULL || (addr1)->addr == 0)
 151
 152 u8_t ip_addr_isbroadcast(struct ip_addr *, struct netif *);
 153
 154 #define ip_addr_ismulticast(addr1) (((addr1)->addr & ntohl(0xf0000000UL)) == ntohl(0xe0000000UL))
 155
 156 #define ip_addr_islinklocal(addr1) (((addr1)->addr & ntohl(0xffff0000UL)) == ntohl(0xa9fe0000UL))
 157
 158 #define ip_addr_debug_print(debug, ipaddr) \
 159         LWIP_DEBUGF(debug, ("%"U16_F".%"U16_F".%"U16_F".%"U16_F, \
 160                 ipaddr ? (u16_t)(ntohl((ipaddr)->addr) >> 24) & 0xff : 0, \
 161                 ipaddr ? (u16_t)(ntohl((ipaddr)->addr) >> 16) & 0xff : 0, \
 162                 ipaddr ? (u16_t)(ntohl((ipaddr)->addr) >> 8) & 0xff : 0, \
 163                 ipaddr ? (u16_t)ntohl((ipaddr)->addr) & 0xff : 0))
 164
 165 /* These are cast to u16_t, with the intent that they are often arguments
 166  * to printf using the U16_F format from cc.h. */
 167 #define ip4_addr1(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 24) & 0xff)
 168 #define ip4_addr2(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 16) & 0xff)
 169 #define ip4_addr3(ipaddr) ((u16_t)(ntohl((ipaddr)->addr) >> 8) & 0xff)
 170 #define ip4_addr4(ipaddr) ((u16_t)(ntohl((ipaddr)->addr)) & 0xff)
 171
 172 #ifdef __cplusplus
 173 }
 174 #endif
 175
 176 #endif /* __LWIP_IP_ADDR_H__ */