fnet_ip4.h

 /**************************************************************************

 *

 * Copyright 2011-2016 by Andrey Butok. FNET Community.

 * Copyright 2008-2010 by Andrey Butok. Freescale Semiconductor, Inc.

 *

 ***************************************************************************

 *

 * Licensed under the Apache License, Version 2.0 (the "License"); you may

 * not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT

 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 *

 ***************************************************************************

 *

 * IPv4 protocol API.

 *

 ***************************************************************************/

 

 #ifndef _FNET_IP4_H_

 

 #define _FNET_IP4_H_

 

 /**************************************************************************/

 typedef fnet_uint32_t fnet_ip4_addr_t;

 

 /**************************************************************************/

 #define FNET_IP4_ADDR_INIT(a, b, c, d) ((fnet_ip4_addr_t)(FNET_NTOHL((((fnet_uint32_t)(a)&0xFFUL)<< 24U) + (((fnet_uint32_t)(b)&0xFFUL)<< 16U) + (((fnet_uint32_t)(c)&0xFFUL)<< 8U ) + ((fnet_uint32_t)(d)&0xFFUL))))

 

 /**************************************************************************/

 #define FNET_IP4_ADDR_STR_SIZE sizeof("255.255.255.255")

 

 /* 169.254/16 prefix that is valid for Link-Local communication. RFC3927*/

 #define FNET_IP4_ADDR_LINK_LOCAL_PREFIX FNET_IP4_ADDR_INIT(169,254,0,0)

 

 /* IPv4 Link-Local broadcast. RFC3927*/

 #define FNET_IP4_ADDR_LINK_LOCAL_BROADCAST FNET_IP4_ADDR_INIT(169,254,255,255)

 

 /************************************************************************

 * Definitions for IP type of service.

 *************************************************************************/

 #define FNET_IP4_TOS_NORMAL (0x0U)

 #define FNET_IP4_TOS_LOWDELAY (0x10U)

 #define FNET_IP4_TOS_THROUGHPUT (0x08U)

 #define FNET_IP4_TOS_RELIABILITY (0x04U)

 

 /************************************************************************

 * Definitions of five different classes.

 *************************************************************************/

 #define FNET_IP4_CLASS_A(i) (((fnet_ip4_addr_t)(i) & FNET_HTONL(0x80000000U)) == 0U)

 #define FNET_IP4_CLASS_A_NET FNET_HTONL(0xff000000U)

 

 #define FNET_IP4_CLASS_B(i) (((fnet_ip4_addr_t)(i) & FNET_HTONL(0xc0000000U)) == FNET_HTONL(0x80000000U))

 #define FNET_IP4_CLASS_B_NET FNET_HTONL(0xffff0000U)

 

 #define FNET_IP4_CLASS_C(i) (((fnet_ip4_addr_t)(i) & FNET_HTONL(0xe0000000U)) == FNET_HTONL(0xc0000000U))

 #define FNET_IP4_CLASS_C_NET FNET_HTONL(0xffffff00U)

 

 #define FNET_IP4_CLASS_D(i) (((fnet_ip4_addr_t)(i) & FNET_HTONL(0xf0000000U)) == FNET_HTONL(0xe0000000U))

 #define FNET_IP4_CLASS_D_NET FNET_HTONL(0xf0000000U)

 /* Host groups are identified by class D IP addresses.*/

 #define FNET_IP4_ADDR_IS_MULTICAST(addr) (FNET_IP4_CLASS_D(addr)?FNET_TRUE:FNET_FALSE)

 

 #define FNET_IP4_ADDR_IS_UNSPECIFIED(addr) (((addr) == INADDR_ANY)?FNET_TRUE:FNET_FALSE)

 

 #define FNET_IP4_CLASS_E(i) (((fnet_ip4_addr_t)(i) & FNET_HTONL(0xf0000000U)) == FNET_HTONL(0xf0000000U))

 #define FNET_IP4_EXPERIMENTAL(i) FNET_IP4_CLASS_E(i)

 #define FNET_IP4_BADCLASS(i) FNET_IP4_CLASS_E(i)

 

 #define FNET_IP4_ADDR1(ipaddr) ((fnet_uint8_t)(fnet_ntohl(ipaddr) >> 24U) & 0xffU)

 #define FNET_IP4_ADDR2(ipaddr) ((fnet_uint8_t)(fnet_ntohl(ipaddr) >> 16U) & 0xffU)

 #define FNET_IP4_ADDR3(ipaddr) ((fnet_uint8_t)(fnet_ntohl(ipaddr) >> 8U) & 0xffU)

 #define FNET_IP4_ADDR4(ipaddr) ((fnet_uint8_t)(fnet_ntohl(ipaddr)) & 0xffU)

 

 #endif