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EthernetNetIf/LPC2368/lwip/include/ipv4/lwip/ip_addr.h@0:58c3d014a4e7, 2011-09-06 (annotated)

Committer:: slowness
Date:: Tue Sep 06 18:05:46 2011 +0000
Revision:: 0:58c3d014a4e7

Who changed what in which revision?

User	Revision	Line number	New contents of line
slowness	0:58c3d014a4e7	1	/*
slowness	0:58c3d014a4e7	2	* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
slowness	0:58c3d014a4e7	3	* All rights reserved.
slowness	0:58c3d014a4e7	4	*
slowness	0:58c3d014a4e7	5	* Redistribution and use in source and binary forms, with or without modification,
slowness	0:58c3d014a4e7	6	* are permitted provided that the following conditions are met:
slowness	0:58c3d014a4e7	7	*
slowness	0:58c3d014a4e7	8	* 1. Redistributions of source code must retain the above copyright notice,
slowness	0:58c3d014a4e7	9	* this list of conditions and the following disclaimer.
slowness	0:58c3d014a4e7	10	* 2. Redistributions in binary form must reproduce the above copyright notice,
slowness	0:58c3d014a4e7	11	* this list of conditions and the following disclaimer in the documentation
slowness	0:58c3d014a4e7	12	* and/or other materials provided with the distribution.
slowness	0:58c3d014a4e7	13	* 3. The name of the author may not be used to endorse or promote products
slowness	0:58c3d014a4e7	14	* derived from this software without specific prior written permission.
slowness	0:58c3d014a4e7	15	*
slowness	0:58c3d014a4e7	16	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
slowness	0:58c3d014a4e7	17	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
slowness	0:58c3d014a4e7	18	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
slowness	0:58c3d014a4e7	19	* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
slowness	0:58c3d014a4e7	20	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
slowness	0:58c3d014a4e7	21	* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
slowness	0:58c3d014a4e7	22	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
slowness	0:58c3d014a4e7	23	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
slowness	0:58c3d014a4e7	24	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
slowness	0:58c3d014a4e7	25	* OF SUCH DAMAGE.
slowness	0:58c3d014a4e7	26	*
slowness	0:58c3d014a4e7	27	* This file is part of the lwIP TCP/IP stack.
slowness	0:58c3d014a4e7	28	*
slowness	0:58c3d014a4e7	29	* Author: Adam Dunkels <adam@sics.se>
slowness	0:58c3d014a4e7	30	*
slowness	0:58c3d014a4e7	31	*/
slowness	0:58c3d014a4e7	32	#ifndef __LWIP_IP_ADDR_H__
slowness	0:58c3d014a4e7	33	#define __LWIP_IP_ADDR_H__
slowness	0:58c3d014a4e7	34
slowness	0:58c3d014a4e7	35	#include "lwip/opt.h"
slowness	0:58c3d014a4e7	36	#include "lwip/def.h"
slowness	0:58c3d014a4e7	37
slowness	0:58c3d014a4e7	38	#ifdef __cplusplus
slowness	0:58c3d014a4e7	39	extern "C" {
slowness	0:58c3d014a4e7	40	#endif
slowness	0:58c3d014a4e7	41
slowness	0:58c3d014a4e7	42	/* This is the aligned version of ip_addr_t,
slowness	0:58c3d014a4e7	43	used as local variable, on the stack, etc. */
slowness	0:58c3d014a4e7	44	struct ip_addr {
slowness	0:58c3d014a4e7	45	u32_t addr;
slowness	0:58c3d014a4e7	46	};
slowness	0:58c3d014a4e7	47
slowness	0:58c3d014a4e7	48	/* This is the packed version of ip_addr_t,
slowness	0:58c3d014a4e7	49	used in network headers that are itself packed */
slowness	0:58c3d014a4e7	50	#ifdef PACK_STRUCT_USE_INCLUDES
slowness	0:58c3d014a4e7	51	# include "arch/bpstruct.h"
slowness	0:58c3d014a4e7	52	#endif
slowness	0:58c3d014a4e7	53	PACK_STRUCT_BEGIN
slowness	0:58c3d014a4e7	54	struct ip_addr_packed {
slowness	0:58c3d014a4e7	55	PACK_STRUCT_FIELD(u32_t addr);
slowness	0:58c3d014a4e7	56	} PACK_STRUCT_STRUCT;
slowness	0:58c3d014a4e7	57	PACK_STRUCT_END
slowness	0:58c3d014a4e7	58	#ifdef PACK_STRUCT_USE_INCLUDES
slowness	0:58c3d014a4e7	59	# include "arch/epstruct.h"
slowness	0:58c3d014a4e7	60	#endif
slowness	0:58c3d014a4e7	61
slowness	0:58c3d014a4e7	62	/** ip_addr_t uses a struct for convenience only, so that the same defines can
slowness	0:58c3d014a4e7	63	* operate both on ip_addr_t as well as on ip_addr_p_t. */
slowness	0:58c3d014a4e7	64	typedef struct ip_addr ip_addr_t;
slowness	0:58c3d014a4e7	65	typedef struct ip_addr_packed ip_addr_p_t;
slowness	0:58c3d014a4e7	66
slowness	0:58c3d014a4e7	67	/*
slowness	0:58c3d014a4e7	68	* struct ipaddr2 is used in the definition of the ARP packet format in
slowness	0:58c3d014a4e7	69	* order to support compilers that don't have structure packing.
slowness	0:58c3d014a4e7	70	*/
slowness	0:58c3d014a4e7	71	#ifdef PACK_STRUCT_USE_INCLUDES
slowness	0:58c3d014a4e7	72	# include "arch/bpstruct.h"
slowness	0:58c3d014a4e7	73	#endif
slowness	0:58c3d014a4e7	74	PACK_STRUCT_BEGIN
slowness	0:58c3d014a4e7	75	struct ip_addr2 {
slowness	0:58c3d014a4e7	76	PACK_STRUCT_FIELD(u16_t addrw[2]);
slowness	0:58c3d014a4e7	77	} PACK_STRUCT_STRUCT;
slowness	0:58c3d014a4e7	78	PACK_STRUCT_END
slowness	0:58c3d014a4e7	79	#ifdef PACK_STRUCT_USE_INCLUDES
slowness	0:58c3d014a4e7	80	# include "arch/epstruct.h"
slowness	0:58c3d014a4e7	81	#endif
slowness	0:58c3d014a4e7	82
slowness	0:58c3d014a4e7	83	/* Forward declaration to not include netif.h */
slowness	0:58c3d014a4e7	84	struct netif;
slowness	0:58c3d014a4e7	85
slowness	0:58c3d014a4e7	86	extern const ip_addr_t ip_addr_any;
slowness	0:58c3d014a4e7	87	extern const ip_addr_t ip_addr_broadcast;
slowness	0:58c3d014a4e7	88
slowness	0:58c3d014a4e7	89	/** IP_ADDR_ can be used as a fixed IP address
slowness	0:58c3d014a4e7	90	* for the wildcard and the broadcast address
slowness	0:58c3d014a4e7	91	*/
slowness	0:58c3d014a4e7	92	#define IP_ADDR_ANY ((ip_addr_t *)&ip_addr_any)
slowness	0:58c3d014a4e7	93	#define IP_ADDR_BROADCAST ((ip_addr_t *)&ip_addr_broadcast)
slowness	0:58c3d014a4e7	94
slowness	0:58c3d014a4e7	95	/** 255.255.255.255 */
slowness	0:58c3d014a4e7	96	#define IPADDR_NONE ((u32_t)0xffffffffUL)
slowness	0:58c3d014a4e7	97	/** 127.0.0.1 */
slowness	0:58c3d014a4e7	98	#define IPADDR_LOOPBACK ((u32_t)0x7f000001UL)
slowness	0:58c3d014a4e7	99	/** 0.0.0.0 */
slowness	0:58c3d014a4e7	100	#define IPADDR_ANY ((u32_t)0x00000000UL)
slowness	0:58c3d014a4e7	101	/** 255.255.255.255 */
slowness	0:58c3d014a4e7	102	#define IPADDR_BROADCAST ((u32_t)0xffffffffUL)
slowness	0:58c3d014a4e7	103
slowness	0:58c3d014a4e7	104	/* Definitions of the bits in an Internet address integer.
slowness	0:58c3d014a4e7	105
slowness	0:58c3d014a4e7	106	On subnets, host and network parts are found according to
slowness	0:58c3d014a4e7	107	the subnet mask, not these masks. */
slowness	0:58c3d014a4e7	108	#define IP_CLASSA(a) ((((u32_t)(a)) & 0x80000000UL) == 0)
slowness	0:58c3d014a4e7	109	#define IP_CLASSA_NET 0xff000000
slowness	0:58c3d014a4e7	110	#define IP_CLASSA_NSHIFT 24
slowness	0:58c3d014a4e7	111	#define IP_CLASSA_HOST (0xffffffff & ~IP_CLASSA_NET)
slowness	0:58c3d014a4e7	112	#define IP_CLASSA_MAX 128
slowness	0:58c3d014a4e7	113
slowness	0:58c3d014a4e7	114	#define IP_CLASSB(a) ((((u32_t)(a)) & 0xc0000000UL) == 0x80000000UL)
slowness	0:58c3d014a4e7	115	#define IP_CLASSB_NET 0xffff0000
slowness	0:58c3d014a4e7	116	#define IP_CLASSB_NSHIFT 16
slowness	0:58c3d014a4e7	117	#define IP_CLASSB_HOST (0xffffffff & ~IP_CLASSB_NET)
slowness	0:58c3d014a4e7	118	#define IP_CLASSB_MAX 65536
slowness	0:58c3d014a4e7	119
slowness	0:58c3d014a4e7	120	#define IP_CLASSC(a) ((((u32_t)(a)) & 0xe0000000UL) == 0xc0000000UL)
slowness	0:58c3d014a4e7	121	#define IP_CLASSC_NET 0xffffff00
slowness	0:58c3d014a4e7	122	#define IP_CLASSC_NSHIFT 8
slowness	0:58c3d014a4e7	123	#define IP_CLASSC_HOST (0xffffffff & ~IP_CLASSC_NET)
slowness	0:58c3d014a4e7	124
slowness	0:58c3d014a4e7	125	#define IP_CLASSD(a) (((u32_t)(a) & 0xf0000000UL) == 0xe0000000UL)
slowness	0:58c3d014a4e7	126	#define IP_CLASSD_NET 0xf0000000 /* These ones aren't really */
slowness	0:58c3d014a4e7	127	#define IP_CLASSD_NSHIFT 28 /* net and host fields, but */
slowness	0:58c3d014a4e7	128	#define IP_CLASSD_HOST 0x0fffffff /* routing needn't know. */
slowness	0:58c3d014a4e7	129	#define IP_MULTICAST(a) IP_CLASSD(a)
slowness	0:58c3d014a4e7	130
slowness	0:58c3d014a4e7	131	#define IP_EXPERIMENTAL(a) (((u32_t)(a) & 0xf0000000UL) == 0xf0000000UL)
slowness	0:58c3d014a4e7	132	#define IP_BADCLASS(a) (((u32_t)(a) & 0xf0000000UL) == 0xf0000000UL)
slowness	0:58c3d014a4e7	133
slowness	0:58c3d014a4e7	134	#define IP_LOOPBACKNET 127 /* official! */
slowness	0:58c3d014a4e7	135
slowness	0:58c3d014a4e7	136
slowness	0:58c3d014a4e7	137	#if BYTE_ORDER == BIG_ENDIAN
slowness	0:58c3d014a4e7	138	/** Set an IP address given by the four byte-parts */
slowness	0:58c3d014a4e7	139	#define IP4_ADDR(ipaddr, a,b,c,d) \
slowness	0:58c3d014a4e7	140	(ipaddr)->addr = ((u32_t)((a) & 0xff) << 24) \| \
slowness	0:58c3d014a4e7	141	((u32_t)((b) & 0xff) << 16) \| \
slowness	0:58c3d014a4e7	142	((u32_t)((c) & 0xff) << 8) \| \
slowness	0:58c3d014a4e7	143	(u32_t)((d) & 0xff)
slowness	0:58c3d014a4e7	144	#else
slowness	0:58c3d014a4e7	145	/** Set an IP address given by the four byte-parts.
slowness	0:58c3d014a4e7	146	Little-endian version that prevents the use of htonl. */
slowness	0:58c3d014a4e7	147	#define IP4_ADDR(ipaddr, a,b,c,d) \
slowness	0:58c3d014a4e7	148	(ipaddr)->addr = ((u32_t)((d) & 0xff) << 24) \| \
slowness	0:58c3d014a4e7	149	((u32_t)((c) & 0xff) << 16) \| \
slowness	0:58c3d014a4e7	150	((u32_t)((b) & 0xff) << 8) \| \
slowness	0:58c3d014a4e7	151	(u32_t)((a) & 0xff)
slowness	0:58c3d014a4e7	152	#endif
slowness	0:58c3d014a4e7	153
slowness	0:58c3d014a4e7	154	/** MEMCPY-like copying of IP addresses where addresses are known to be
slowness	0:58c3d014a4e7	155	* 16-bit-aligned if the port is correctly configured (so a port could define
slowness	0:58c3d014a4e7	156	* this to copying 2 u16_t's) - no NULL-pointer-checking needed. */
slowness	0:58c3d014a4e7	157	#ifndef IPADDR2_COPY
slowness	0:58c3d014a4e7	158	#define IPADDR2_COPY(dest, src) SMEMCPY(dest, src, sizeof(ip_addr_t))
slowness	0:58c3d014a4e7	159	#endif
slowness	0:58c3d014a4e7	160
slowness	0:58c3d014a4e7	161	/** Copy IP address - faster than ip_addr_set: no NULL check */
slowness	0:58c3d014a4e7	162	#define ip_addr_copy(dest, src) ((dest).addr = (src).addr)
slowness	0:58c3d014a4e7	163	/** Safely copy one IP address to another (src may be NULL) */
slowness	0:58c3d014a4e7	164	#define ip_addr_set(dest, src) ((dest)->addr = \
slowness	0:58c3d014a4e7	165	((src) == NULL ? 0 : \
slowness	0:58c3d014a4e7	166	(src)->addr))
slowness	0:58c3d014a4e7	167	/** Set complete address to zero */
slowness	0:58c3d014a4e7	168	#define ip_addr_set_zero(ipaddr) ((ipaddr)->addr = 0)
slowness	0:58c3d014a4e7	169	/** Set address to IPADDR_ANY (no need for htonl()) */
slowness	0:58c3d014a4e7	170	#define ip_addr_set_any(ipaddr) ((ipaddr)->addr = IPADDR_ANY)
slowness	0:58c3d014a4e7	171	/** Set address to loopback address */
slowness	0:58c3d014a4e7	172	#define ip_addr_set_loopback(ipaddr) ((ipaddr)->addr = PP_HTONL(IPADDR_LOOPBACK))
slowness	0:58c3d014a4e7	173	/** Safely copy one IP address to another and change byte order
slowness	0:58c3d014a4e7	174	* from host- to network-order. */
slowness	0:58c3d014a4e7	175	#define ip_addr_set_hton(dest, src) ((dest)->addr = \
slowness	0:58c3d014a4e7	176	((src) == NULL ? 0:\
slowness	0:58c3d014a4e7	177	htonl((src)->addr)))
slowness	0:58c3d014a4e7	178	/** IPv4 only: set the IP address given as an u32_t */
slowness	0:58c3d014a4e7	179	#define ip4_addr_set_u32(dest_ipaddr, src_u32) ((dest_ipaddr)->addr = (src_u32))
slowness	0:58c3d014a4e7	180	/** IPv4 only: get the IP address as an u32_t */
slowness	0:58c3d014a4e7	181	#define ip4_addr_get_u32(src_ipaddr) ((src_ipaddr)->addr)
slowness	0:58c3d014a4e7	182
slowness	0:58c3d014a4e7	183	/** Get the network address by combining host address with netmask */
slowness	0:58c3d014a4e7	184	#define ip_addr_get_network(target, host, netmask) ((target)->addr = ((host)->addr) & ((netmask)->addr))
slowness	0:58c3d014a4e7	185
slowness	0:58c3d014a4e7	186	/**
slowness	0:58c3d014a4e7	187	* Determine if two address are on the same network.
slowness	0:58c3d014a4e7	188	*
slowness	0:58c3d014a4e7	189	* @arg addr1 IP address 1
slowness	0:58c3d014a4e7	190	* @arg addr2 IP address 2
slowness	0:58c3d014a4e7	191	* @arg mask network identifier mask
slowness	0:58c3d014a4e7	192	* @return !0 if the network identifiers of both address match
slowness	0:58c3d014a4e7	193	*/
slowness	0:58c3d014a4e7	194	#define ip_addr_netcmp(addr1, addr2, mask) (((addr1)->addr & \
slowness	0:58c3d014a4e7	195	(mask)->addr) == \
slowness	0:58c3d014a4e7	196	((addr2)->addr & \
slowness	0:58c3d014a4e7	197	(mask)->addr))
slowness	0:58c3d014a4e7	198	#define ip_addr_cmp(addr1, addr2) ((addr1)->addr == (addr2)->addr)
slowness	0:58c3d014a4e7	199
slowness	0:58c3d014a4e7	200	#define ip_addr_isany(addr1) ((addr1) == NULL \|\| (addr1)->addr == IPADDR_ANY)
slowness	0:58c3d014a4e7	201
slowness	0:58c3d014a4e7	202	#define ip_addr_isbroadcast(ipaddr, netif) ip4_addr_isbroadcast((ipaddr)->addr, (netif))
slowness	0:58c3d014a4e7	203	u8_t ip4_addr_isbroadcast(u32_t addr, const struct netif *netif);
slowness	0:58c3d014a4e7	204
slowness	0:58c3d014a4e7	205	#define ip_addr_netmask_valid(netmask) ip4_addr_netmask_valid((netmask)->addr)
slowness	0:58c3d014a4e7	206	u8_t ip4_addr_netmask_valid(u32_t netmask);
slowness	0:58c3d014a4e7	207
slowness	0:58c3d014a4e7	208	#define ip_addr_ismulticast(addr1) (((addr1)->addr & PP_HTONL(0xf0000000UL)) == PP_HTONL(0xe0000000UL))
slowness	0:58c3d014a4e7	209
slowness	0:58c3d014a4e7	210	#define ip_addr_islinklocal(addr1) (((addr1)->addr & PP_HTONL(0xffff0000UL)) == PP_HTONL(0xa9fe0000UL))
slowness	0:58c3d014a4e7	211
slowness	0:58c3d014a4e7	212	#define ip_addr_debug_print(debug, ipaddr) \
slowness	0:58c3d014a4e7	213	LWIP_DEBUGF(debug, ("%"U16_F".%"U16_F".%"U16_F".%"U16_F, \
slowness	0:58c3d014a4e7	214	ipaddr != NULL ? ip4_addr1_16(ipaddr) : 0, \
slowness	0:58c3d014a4e7	215	ipaddr != NULL ? ip4_addr2_16(ipaddr) : 0, \
slowness	0:58c3d014a4e7	216	ipaddr != NULL ? ip4_addr3_16(ipaddr) : 0, \
slowness	0:58c3d014a4e7	217	ipaddr != NULL ? ip4_addr4_16(ipaddr) : 0))
slowness	0:58c3d014a4e7	218
slowness	0:58c3d014a4e7	219	/* Get one byte from the 4-byte address */
slowness	0:58c3d014a4e7	220	#define ip4_addr1(ipaddr) (((u8_t*)(ipaddr))[0])
slowness	0:58c3d014a4e7	221	#define ip4_addr2(ipaddr) (((u8_t*)(ipaddr))[1])
slowness	0:58c3d014a4e7	222	#define ip4_addr3(ipaddr) (((u8_t*)(ipaddr))[2])
slowness	0:58c3d014a4e7	223	#define ip4_addr4(ipaddr) (((u8_t*)(ipaddr))[3])
slowness	0:58c3d014a4e7	224	/* These are cast to u16_t, with the intent that they are often arguments
slowness	0:58c3d014a4e7	225	* to printf using the U16_F format from cc.h. */
slowness	0:58c3d014a4e7	226	#define ip4_addr1_16(ipaddr) ((u16_t)ip4_addr1(ipaddr))
slowness	0:58c3d014a4e7	227	#define ip4_addr2_16(ipaddr) ((u16_t)ip4_addr2(ipaddr))
slowness	0:58c3d014a4e7	228	#define ip4_addr3_16(ipaddr) ((u16_t)ip4_addr3(ipaddr))
slowness	0:58c3d014a4e7	229	#define ip4_addr4_16(ipaddr) ((u16_t)ip4_addr4(ipaddr))
slowness	0:58c3d014a4e7	230
slowness	0:58c3d014a4e7	231	/** For backwards compatibility */
slowness	0:58c3d014a4e7	232	#define ip_ntoa(ipaddr) ipaddr_ntoa(ipaddr)
slowness	0:58c3d014a4e7	233
slowness	0:58c3d014a4e7	234	u32_t ipaddr_addr(const char *cp);
slowness	0:58c3d014a4e7	235	int ipaddr_aton(const char cp, ip_addr_t addr);
slowness	0:58c3d014a4e7	236	/** returns ptr to static buffer; not reentrant! */
slowness	0:58c3d014a4e7	237	char ipaddr_ntoa(const ip_addr_t addr);
slowness	0:58c3d014a4e7	238	char ipaddr_ntoa_r(const ip_addr_t addr, char *buf, int buflen);
slowness	0:58c3d014a4e7	239
slowness	0:58c3d014a4e7	240	#ifdef __cplusplus
slowness	0:58c3d014a4e7	241	}
slowness	0:58c3d014a4e7	242	#endif
slowness	0:58c3d014a4e7	243
slowness	0:58c3d014a4e7	244	#endif /* __LWIP_IP_ADDR_H__ */

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	06 Sep 2011
Imports:	112
Forks:	0
Commits:	1
Dependents:	1
Dependencies:	1
Followers:	2

EthernetNetIf/LPC2368/lwip/include/ipv4/lwip/ip_addr.h@0:58c3d014a4e7, 2011-09-06 (annotated)

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