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EthernetNetIf/LPC1768/lwip/include/ipv4/lwip/ip.h@0:10bcaa7c2253, 2010-10-26 (annotated)

Committer:: okini3939
Date:: Tue Oct 26 17:19:28 2010 +0000
Revision:: 0:10bcaa7c2253

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User	Revision	Line number	New contents of line
okini3939	0:10bcaa7c2253	1	/*
okini3939	0:10bcaa7c2253	2	* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
okini3939	0:10bcaa7c2253	3	* All rights reserved.
okini3939	0:10bcaa7c2253	4	*
okini3939	0:10bcaa7c2253	5	* Redistribution and use in source and binary forms, with or without modification,
okini3939	0:10bcaa7c2253	6	* are permitted provided that the following conditions are met:
okini3939	0:10bcaa7c2253	7	*
okini3939	0:10bcaa7c2253	8	* 1. Redistributions of source code must retain the above copyright notice,
okini3939	0:10bcaa7c2253	9	* this list of conditions and the following disclaimer.
okini3939	0:10bcaa7c2253	10	* 2. Redistributions in binary form must reproduce the above copyright notice,
okini3939	0:10bcaa7c2253	11	* this list of conditions and the following disclaimer in the documentation
okini3939	0:10bcaa7c2253	12	* and/or other materials provided with the distribution.
okini3939	0:10bcaa7c2253	13	* 3. The name of the author may not be used to endorse or promote products
okini3939	0:10bcaa7c2253	14	* derived from this software without specific prior written permission.
okini3939	0:10bcaa7c2253	15	*
okini3939	0:10bcaa7c2253	16	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
okini3939	0:10bcaa7c2253	17	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
okini3939	0:10bcaa7c2253	18	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
okini3939	0:10bcaa7c2253	19	* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
okini3939	0:10bcaa7c2253	20	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
okini3939	0:10bcaa7c2253	21	* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
okini3939	0:10bcaa7c2253	22	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
okini3939	0:10bcaa7c2253	23	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
okini3939	0:10bcaa7c2253	24	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
okini3939	0:10bcaa7c2253	25	* OF SUCH DAMAGE.
okini3939	0:10bcaa7c2253	26	*
okini3939	0:10bcaa7c2253	27	* This file is part of the lwIP TCP/IP stack.
okini3939	0:10bcaa7c2253	28	*
okini3939	0:10bcaa7c2253	29	* Author: Adam Dunkels <adam@sics.se>
okini3939	0:10bcaa7c2253	30	*
okini3939	0:10bcaa7c2253	31	*/
okini3939	0:10bcaa7c2253	32	#ifndef __LWIP_IP_H__
okini3939	0:10bcaa7c2253	33	#define __LWIP_IP_H__
okini3939	0:10bcaa7c2253	34
okini3939	0:10bcaa7c2253	35	#include "lwip/opt.h"
okini3939	0:10bcaa7c2253	36
okini3939	0:10bcaa7c2253	37	#include "lwip/def.h"
okini3939	0:10bcaa7c2253	38	#include "lwip/pbuf.h"
okini3939	0:10bcaa7c2253	39	#include "lwip/ip_addr.h"
okini3939	0:10bcaa7c2253	40	#include "lwip/err.h"
okini3939	0:10bcaa7c2253	41	#include "lwip/netif.h"
okini3939	0:10bcaa7c2253	42
okini3939	0:10bcaa7c2253	43	#ifdef __cplusplus
okini3939	0:10bcaa7c2253	44	extern "C" {
okini3939	0:10bcaa7c2253	45	#endif
okini3939	0:10bcaa7c2253	46
okini3939	0:10bcaa7c2253	47	/** Currently, the function ip_output_if_opt() is only used with IGMP */
okini3939	0:10bcaa7c2253	48	#define IP_OPTIONS_SEND LWIP_IGMP
okini3939	0:10bcaa7c2253	49
okini3939	0:10bcaa7c2253	50	#define IP_HLEN 20
okini3939	0:10bcaa7c2253	51
okini3939	0:10bcaa7c2253	52	#define IP_PROTO_ICMP 1
okini3939	0:10bcaa7c2253	53	#define IP_PROTO_IGMP 2
okini3939	0:10bcaa7c2253	54	#define IP_PROTO_UDP 17
okini3939	0:10bcaa7c2253	55	#define IP_PROTO_UDPLITE 136
okini3939	0:10bcaa7c2253	56	#define IP_PROTO_TCP 6
okini3939	0:10bcaa7c2253	57
okini3939	0:10bcaa7c2253	58	/* This is passed as the destination address to ip_output_if (not
okini3939	0:10bcaa7c2253	59	to ip_output), meaning that an IP header already is constructed
okini3939	0:10bcaa7c2253	60	in the pbuf. This is used when TCP retransmits. */
okini3939	0:10bcaa7c2253	61	#ifdef IP_HDRINCL
okini3939	0:10bcaa7c2253	62	#undef IP_HDRINCL
okini3939	0:10bcaa7c2253	63	#endif /* IP_HDRINCL */
okini3939	0:10bcaa7c2253	64	#define IP_HDRINCL NULL
okini3939	0:10bcaa7c2253	65
okini3939	0:10bcaa7c2253	66	#if LWIP_NETIF_HWADDRHINT
okini3939	0:10bcaa7c2253	67	#define IP_PCB_ADDRHINT ;u8_t addr_hint
okini3939	0:10bcaa7c2253	68	#else
okini3939	0:10bcaa7c2253	69	#define IP_PCB_ADDRHINT
okini3939	0:10bcaa7c2253	70	#endif /* LWIP_NETIF_HWADDRHINT */
okini3939	0:10bcaa7c2253	71
okini3939	0:10bcaa7c2253	72	/* This is the common part of all PCB types. It needs to be at the
okini3939	0:10bcaa7c2253	73	beginning of a PCB type definition. It is located here so that
okini3939	0:10bcaa7c2253	74	changes to this common part are made in one location instead of
okini3939	0:10bcaa7c2253	75	having to change all PCB structs. */
okini3939	0:10bcaa7c2253	76	#define IP_PCB \
okini3939	0:10bcaa7c2253	77	/* ip addresses in network byte order */ \
okini3939	0:10bcaa7c2253	78	ip_addr_t local_ip; \
okini3939	0:10bcaa7c2253	79	ip_addr_t remote_ip; \
okini3939	0:10bcaa7c2253	80	/* Socket options */ \
okini3939	0:10bcaa7c2253	81	u8_t so_options; \
okini3939	0:10bcaa7c2253	82	/* Type Of Service */ \
okini3939	0:10bcaa7c2253	83	u8_t tos; \
okini3939	0:10bcaa7c2253	84	/* Time To Live */ \
okini3939	0:10bcaa7c2253	85	u8_t ttl \
okini3939	0:10bcaa7c2253	86	/* link layer address resolution hint */ \
okini3939	0:10bcaa7c2253	87	IP_PCB_ADDRHINT
okini3939	0:10bcaa7c2253	88
okini3939	0:10bcaa7c2253	89	struct ip_pcb {
okini3939	0:10bcaa7c2253	90	/* Common members of all PCB types */
okini3939	0:10bcaa7c2253	91	IP_PCB;
okini3939	0:10bcaa7c2253	92	};
okini3939	0:10bcaa7c2253	93
okini3939	0:10bcaa7c2253	94	/*
okini3939	0:10bcaa7c2253	95	* Option flags per-socket. These are the same like SO_XXX.
okini3939	0:10bcaa7c2253	96	*/
okini3939	0:10bcaa7c2253	97	/#define SOF_DEBUG (u8_t)0x01U Unimplemented: turn on debugging info recording /
okini3939	0:10bcaa7c2253	98	#define SOF_ACCEPTCONN (u8_t)0x02U /* socket has had listen() */
okini3939	0:10bcaa7c2253	99	#define SOF_REUSEADDR (u8_t)0x04U /* allow local address reuse */
okini3939	0:10bcaa7c2253	100	#define SOF_KEEPALIVE (u8_t)0x08U /* keep connections alive */
okini3939	0:10bcaa7c2253	101	/#define SOF_DONTROUTE (u8_t)0x10U Unimplemented: just use interface addresses /
okini3939	0:10bcaa7c2253	102	#define SOF_BROADCAST (u8_t)0x20U /* permit to send and to receive broadcast messages (see IP_SOF_BROADCAST option) */
okini3939	0:10bcaa7c2253	103	/#define SOF_USELOOPBACK (u8_t)0x40U Unimplemented: bypass hardware when possible /
okini3939	0:10bcaa7c2253	104	#define SOF_LINGER (u8_t)0x80U /* linger on close if data present */
okini3939	0:10bcaa7c2253	105	/#define SOF_OOBINLINE (u16_t)0x0100U Unimplemented: leave received OOB data in line /
okini3939	0:10bcaa7c2253	106	/#define SOF_REUSEPORT (u16_t)0x0200U Unimplemented: allow local address & port reuse /
okini3939	0:10bcaa7c2253	107
okini3939	0:10bcaa7c2253	108	/* These flags are inherited (e.g. from a listen-pcb to a connection-pcb): */
okini3939	0:10bcaa7c2253	109	#define SOF_INHERITED (SOF_REUSEADDR\|SOF_KEEPALIVE\|SOF_LINGER/\|SOF_DEBUG\|SOF_DONTROUTE\|SOF_OOBINLINE/)
okini3939	0:10bcaa7c2253	110
okini3939	0:10bcaa7c2253	111
okini3939	0:10bcaa7c2253	112	#ifdef PACK_STRUCT_USE_INCLUDES
okini3939	0:10bcaa7c2253	113	# include "arch/bpstruct.h"
okini3939	0:10bcaa7c2253	114	#endif
okini3939	0:10bcaa7c2253	115	PACK_STRUCT_BEGIN
okini3939	0:10bcaa7c2253	116	struct ip_hdr {
okini3939	0:10bcaa7c2253	117	/* version / header length / type of service */
okini3939	0:10bcaa7c2253	118	PACK_STRUCT_FIELD(u16_t _v_hl_tos);
okini3939	0:10bcaa7c2253	119	/* total length */
okini3939	0:10bcaa7c2253	120	PACK_STRUCT_FIELD(u16_t _len);
okini3939	0:10bcaa7c2253	121	/* identification */
okini3939	0:10bcaa7c2253	122	PACK_STRUCT_FIELD(u16_t _id);
okini3939	0:10bcaa7c2253	123	/* fragment offset field */
okini3939	0:10bcaa7c2253	124	PACK_STRUCT_FIELD(u16_t _offset);
okini3939	0:10bcaa7c2253	125	#define IP_RF 0x8000 /* reserved fragment flag */
okini3939	0:10bcaa7c2253	126	#define IP_DF 0x4000 /* dont fragment flag */
okini3939	0:10bcaa7c2253	127	#define IP_MF 0x2000 /* more fragments flag */
okini3939	0:10bcaa7c2253	128	#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
okini3939	0:10bcaa7c2253	129	/* time to live */
okini3939	0:10bcaa7c2253	130	PACK_STRUCT_FIELD(u8_t _ttl);
okini3939	0:10bcaa7c2253	131	/* protocol*/
okini3939	0:10bcaa7c2253	132	PACK_STRUCT_FIELD(u8_t _proto);
okini3939	0:10bcaa7c2253	133	/* checksum */
okini3939	0:10bcaa7c2253	134	PACK_STRUCT_FIELD(u16_t _chksum);
okini3939	0:10bcaa7c2253	135	/* source and destination IP addresses */
okini3939	0:10bcaa7c2253	136	PACK_STRUCT_FIELD(ip_addr_p_t src);
okini3939	0:10bcaa7c2253	137	PACK_STRUCT_FIELD(ip_addr_p_t dest);
okini3939	0:10bcaa7c2253	138	} PACK_STRUCT_STRUCT;
okini3939	0:10bcaa7c2253	139	PACK_STRUCT_END
okini3939	0:10bcaa7c2253	140	#ifdef PACK_STRUCT_USE_INCLUDES
okini3939	0:10bcaa7c2253	141	# include "arch/epstruct.h"
okini3939	0:10bcaa7c2253	142	#endif
okini3939	0:10bcaa7c2253	143
okini3939	0:10bcaa7c2253	144	#define IPH_V(hdr) (ntohs((hdr)->_v_hl_tos) >> 12)
okini3939	0:10bcaa7c2253	145	#define IPH_HL(hdr) ((ntohs((hdr)->_v_hl_tos) >> 8) & 0x0f)
okini3939	0:10bcaa7c2253	146	#define IPH_TOS(hdr) (ntohs((hdr)->_v_hl_tos) & 0xff)
okini3939	0:10bcaa7c2253	147	#define IPH_LEN(hdr) ((hdr)->_len)
okini3939	0:10bcaa7c2253	148	#define IPH_ID(hdr) ((hdr)->_id)
okini3939	0:10bcaa7c2253	149	#define IPH_OFFSET(hdr) ((hdr)->_offset)
okini3939	0:10bcaa7c2253	150	#define IPH_TTL(hdr) ((hdr)->_ttl)
okini3939	0:10bcaa7c2253	151	#define IPH_PROTO(hdr) ((hdr)->_proto)
okini3939	0:10bcaa7c2253	152	#define IPH_CHKSUM(hdr) ((hdr)->_chksum)
okini3939	0:10bcaa7c2253	153
okini3939	0:10bcaa7c2253	154	#define IPH_VHLTOS_SET(hdr, v, hl, tos) (hdr)->_v_hl_tos = (htons(((v) << 12) \| ((hl) << 8) \| (tos)))
okini3939	0:10bcaa7c2253	155	#define IPH_LEN_SET(hdr, len) (hdr)->_len = (len)
okini3939	0:10bcaa7c2253	156	#define IPH_ID_SET(hdr, id) (hdr)->_id = (id)
okini3939	0:10bcaa7c2253	157	#define IPH_OFFSET_SET(hdr, off) (hdr)->_offset = (off)
okini3939	0:10bcaa7c2253	158	#define IPH_TTL_SET(hdr, ttl) (hdr)->_ttl = (u8_t)(ttl)
okini3939	0:10bcaa7c2253	159	#define IPH_PROTO_SET(hdr, proto) (hdr)->_proto = (u8_t)(proto)
okini3939	0:10bcaa7c2253	160	#define IPH_CHKSUM_SET(hdr, chksum) (hdr)->_chksum = (chksum)
okini3939	0:10bcaa7c2253	161
okini3939	0:10bcaa7c2253	162	/** The interface that provided the packet for the current callback invocation. */
okini3939	0:10bcaa7c2253	163	extern struct netif *current_netif;
okini3939	0:10bcaa7c2253	164	/** Header of the input packet currently being processed. */
okini3939	0:10bcaa7c2253	165	extern const struct ip_hdr *current_header;
okini3939	0:10bcaa7c2253	166	/** Source IP address of current_header */
okini3939	0:10bcaa7c2253	167	extern ip_addr_t current_iphdr_src;
okini3939	0:10bcaa7c2253	168	/** Destination IP address of current_header */
okini3939	0:10bcaa7c2253	169	extern ip_addr_t current_iphdr_dest;
okini3939	0:10bcaa7c2253	170
okini3939	0:10bcaa7c2253	171	#define ip_init() /* Compatibility define, not init needed. */
okini3939	0:10bcaa7c2253	172	struct netif ip_route(ip_addr_t dest);
okini3939	0:10bcaa7c2253	173	err_t ip_input(struct pbuf p, struct netif inp);
okini3939	0:10bcaa7c2253	174	err_t ip_output(struct pbuf p, ip_addr_t src, ip_addr_t *dest,
okini3939	0:10bcaa7c2253	175	u8_t ttl, u8_t tos, u8_t proto);
okini3939	0:10bcaa7c2253	176	err_t ip_output_if(struct pbuf p, ip_addr_t src, ip_addr_t *dest,
okini3939	0:10bcaa7c2253	177	u8_t ttl, u8_t tos, u8_t proto,
okini3939	0:10bcaa7c2253	178	struct netif *netif);
okini3939	0:10bcaa7c2253	179	#if LWIP_NETIF_HWADDRHINT
okini3939	0:10bcaa7c2253	180	err_t ip_output_hinted(struct pbuf p, ip_addr_t src, ip_addr_t *dest,
okini3939	0:10bcaa7c2253	181	u8_t ttl, u8_t tos, u8_t proto, u8_t *addr_hint);
okini3939	0:10bcaa7c2253	182	#endif /* LWIP_NETIF_HWADDRHINT */
okini3939	0:10bcaa7c2253	183	#if IP_OPTIONS_SEND
okini3939	0:10bcaa7c2253	184	err_t ip_output_if_opt(struct pbuf p, ip_addr_t src, ip_addr_t *dest,
okini3939	0:10bcaa7c2253	185	u8_t ttl, u8_t tos, u8_t proto, struct netif netif, void ip_options,
okini3939	0:10bcaa7c2253	186	u16_t optlen);
okini3939	0:10bcaa7c2253	187	#endif /* IP_OPTIONS_SEND */
okini3939	0:10bcaa7c2253	188	/** Get the interface that received the current packet.
okini3939	0:10bcaa7c2253	189	* This function must only be called from a receive callback (udp_recv,
okini3939	0:10bcaa7c2253	190	* raw_recv, tcp_accept). It will return NULL otherwise. */
okini3939	0:10bcaa7c2253	191	#define ip_current_netif() (current_netif)
okini3939	0:10bcaa7c2253	192	/** Get the IP header of the current packet.
okini3939	0:10bcaa7c2253	193	* This function must only be called from a receive callback (udp_recv,
okini3939	0:10bcaa7c2253	194	* raw_recv, tcp_accept). It will return NULL otherwise. */
okini3939	0:10bcaa7c2253	195	#define ip_current_header() (current_header)
okini3939	0:10bcaa7c2253	196	/** Source IP address of current_header */
okini3939	0:10bcaa7c2253	197	#define ip_current_src_addr() (&current_iphdr_src)
okini3939	0:10bcaa7c2253	198	/** Destination IP address of current_header */
okini3939	0:10bcaa7c2253	199	#define ip_current_dest_addr() (&current_iphdr_dest)
okini3939	0:10bcaa7c2253	200
okini3939	0:10bcaa7c2253	201	#if IP_DEBUG
okini3939	0:10bcaa7c2253	202	void ip_debug_print(struct pbuf *p);
okini3939	0:10bcaa7c2253	203	#else
okini3939	0:10bcaa7c2253	204	#define ip_debug_print(p)
okini3939	0:10bcaa7c2253	205	#endif /* IP_DEBUG */
okini3939	0:10bcaa7c2253	206
okini3939	0:10bcaa7c2253	207	#ifdef __cplusplus
okini3939	0:10bcaa7c2253	208	}
okini3939	0:10bcaa7c2253	209	#endif
okini3939	0:10bcaa7c2253	210
okini3939	0:10bcaa7c2253	211	#endif /* __LWIP_IP_H__ */
okini3939	0:10bcaa7c2253	212
okini3939	0:10bcaa7c2253	213

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	26 Oct 2010
Imports:	8
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	4
Followers:	1

EthernetNetIf/LPC1768/lwip/include/ipv4/lwip/ip.h@0:10bcaa7c2253, 2010-10-26 (annotated)

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