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EthernetNetIf/LPC1768/lwip/include/ipv4/lwip/ip.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_H__
slowness	0:58c3d014a4e7	33	#define __LWIP_IP_H__
slowness	0:58c3d014a4e7	34
slowness	0:58c3d014a4e7	35	#include "lwip/opt.h"
slowness	0:58c3d014a4e7	36
slowness	0:58c3d014a4e7	37	#include "lwip/def.h"
slowness	0:58c3d014a4e7	38	#include "lwip/pbuf.h"
slowness	0:58c3d014a4e7	39	#include "lwip/ip_addr.h"
slowness	0:58c3d014a4e7	40	#include "lwip/err.h"
slowness	0:58c3d014a4e7	41	#include "lwip/netif.h"
slowness	0:58c3d014a4e7	42
slowness	0:58c3d014a4e7	43	#ifdef __cplusplus
slowness	0:58c3d014a4e7	44	extern "C" {
slowness	0:58c3d014a4e7	45	#endif
slowness	0:58c3d014a4e7	46
slowness	0:58c3d014a4e7	47	/** Currently, the function ip_output_if_opt() is only used with IGMP */
slowness	0:58c3d014a4e7	48	#define IP_OPTIONS_SEND LWIP_IGMP
slowness	0:58c3d014a4e7	49
slowness	0:58c3d014a4e7	50	#define IP_HLEN 20
slowness	0:58c3d014a4e7	51
slowness	0:58c3d014a4e7	52	#define IP_PROTO_ICMP 1
slowness	0:58c3d014a4e7	53	#define IP_PROTO_IGMP 2
slowness	0:58c3d014a4e7	54	#define IP_PROTO_UDP 17
slowness	0:58c3d014a4e7	55	#define IP_PROTO_UDPLITE 136
slowness	0:58c3d014a4e7	56	#define IP_PROTO_TCP 6
slowness	0:58c3d014a4e7	57
slowness	0:58c3d014a4e7	58	/* This is passed as the destination address to ip_output_if (not
slowness	0:58c3d014a4e7	59	to ip_output), meaning that an IP header already is constructed
slowness	0:58c3d014a4e7	60	in the pbuf. This is used when TCP retransmits. */
slowness	0:58c3d014a4e7	61	#ifdef IP_HDRINCL
slowness	0:58c3d014a4e7	62	#undef IP_HDRINCL
slowness	0:58c3d014a4e7	63	#endif /* IP_HDRINCL */
slowness	0:58c3d014a4e7	64	#define IP_HDRINCL NULL
slowness	0:58c3d014a4e7	65
slowness	0:58c3d014a4e7	66	#if LWIP_NETIF_HWADDRHINT
slowness	0:58c3d014a4e7	67	#define IP_PCB_ADDRHINT ;u8_t addr_hint
slowness	0:58c3d014a4e7	68	#else
slowness	0:58c3d014a4e7	69	#define IP_PCB_ADDRHINT
slowness	0:58c3d014a4e7	70	#endif /* LWIP_NETIF_HWADDRHINT */
slowness	0:58c3d014a4e7	71
slowness	0:58c3d014a4e7	72	/* This is the common part of all PCB types. It needs to be at the
slowness	0:58c3d014a4e7	73	beginning of a PCB type definition. It is located here so that
slowness	0:58c3d014a4e7	74	changes to this common part are made in one location instead of
slowness	0:58c3d014a4e7	75	having to change all PCB structs. */
slowness	0:58c3d014a4e7	76	#define IP_PCB \
slowness	0:58c3d014a4e7	77	/* ip addresses in network byte order */ \
slowness	0:58c3d014a4e7	78	ip_addr_t local_ip; \
slowness	0:58c3d014a4e7	79	ip_addr_t remote_ip; \
slowness	0:58c3d014a4e7	80	/* Socket options */ \
slowness	0:58c3d014a4e7	81	u8_t so_options; \
slowness	0:58c3d014a4e7	82	/* Type Of Service */ \
slowness	0:58c3d014a4e7	83	u8_t tos; \
slowness	0:58c3d014a4e7	84	/* Time To Live */ \
slowness	0:58c3d014a4e7	85	u8_t ttl \
slowness	0:58c3d014a4e7	86	/* link layer address resolution hint */ \
slowness	0:58c3d014a4e7	87	IP_PCB_ADDRHINT
slowness	0:58c3d014a4e7	88
slowness	0:58c3d014a4e7	89	struct ip_pcb {
slowness	0:58c3d014a4e7	90	/* Common members of all PCB types */
slowness	0:58c3d014a4e7	91	IP_PCB;
slowness	0:58c3d014a4e7	92	};
slowness	0:58c3d014a4e7	93
slowness	0:58c3d014a4e7	94	/*
slowness	0:58c3d014a4e7	95	* Option flags per-socket. These are the same like SO_XXX.
slowness	0:58c3d014a4e7	96	*/
slowness	0:58c3d014a4e7	97	/#define SOF_DEBUG (u8_t)0x01U Unimplemented: turn on debugging info recording /
slowness	0:58c3d014a4e7	98	#define SOF_ACCEPTCONN (u8_t)0x02U /* socket has had listen() */
slowness	0:58c3d014a4e7	99	#define SOF_REUSEADDR (u8_t)0x04U /* allow local address reuse */
slowness	0:58c3d014a4e7	100	#define SOF_KEEPALIVE (u8_t)0x08U /* keep connections alive */
slowness	0:58c3d014a4e7	101	/#define SOF_DONTROUTE (u8_t)0x10U Unimplemented: just use interface addresses /
slowness	0:58c3d014a4e7	102	#define SOF_BROADCAST (u8_t)0x20U /* permit to send and to receive broadcast messages (see IP_SOF_BROADCAST option) */
slowness	0:58c3d014a4e7	103	/#define SOF_USELOOPBACK (u8_t)0x40U Unimplemented: bypass hardware when possible /
slowness	0:58c3d014a4e7	104	#define SOF_LINGER (u8_t)0x80U /* linger on close if data present */
slowness	0:58c3d014a4e7	105	/#define SOF_OOBINLINE (u16_t)0x0100U Unimplemented: leave received OOB data in line /
slowness	0:58c3d014a4e7	106	/#define SOF_REUSEPORT (u16_t)0x0200U Unimplemented: allow local address & port reuse /
slowness	0:58c3d014a4e7	107
slowness	0:58c3d014a4e7	108	/* These flags are inherited (e.g. from a listen-pcb to a connection-pcb): */
slowness	0:58c3d014a4e7	109	#define SOF_INHERITED (SOF_REUSEADDR\|SOF_KEEPALIVE\|SOF_LINGER/\|SOF_DEBUG\|SOF_DONTROUTE\|SOF_OOBINLINE/)
slowness	0:58c3d014a4e7	110
slowness	0:58c3d014a4e7	111
slowness	0:58c3d014a4e7	112	#ifdef PACK_STRUCT_USE_INCLUDES
slowness	0:58c3d014a4e7	113	# include "arch/bpstruct.h"
slowness	0:58c3d014a4e7	114	#endif
slowness	0:58c3d014a4e7	115	PACK_STRUCT_BEGIN
slowness	0:58c3d014a4e7	116	struct ip_hdr {
slowness	0:58c3d014a4e7	117	/* version / header length / type of service */
slowness	0:58c3d014a4e7	118	PACK_STRUCT_FIELD(u16_t _v_hl_tos);
slowness	0:58c3d014a4e7	119	/* total length */
slowness	0:58c3d014a4e7	120	PACK_STRUCT_FIELD(u16_t _len);
slowness	0:58c3d014a4e7	121	/* identification */
slowness	0:58c3d014a4e7	122	PACK_STRUCT_FIELD(u16_t _id);
slowness	0:58c3d014a4e7	123	/* fragment offset field */
slowness	0:58c3d014a4e7	124	PACK_STRUCT_FIELD(u16_t _offset);
slowness	0:58c3d014a4e7	125	#define IP_RF 0x8000 /* reserved fragment flag */
slowness	0:58c3d014a4e7	126	#define IP_DF 0x4000 /* dont fragment flag */
slowness	0:58c3d014a4e7	127	#define IP_MF 0x2000 /* more fragments flag */
slowness	0:58c3d014a4e7	128	#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
slowness	0:58c3d014a4e7	129	/* time to live */
slowness	0:58c3d014a4e7	130	PACK_STRUCT_FIELD(u8_t _ttl);
slowness	0:58c3d014a4e7	131	/* protocol*/
slowness	0:58c3d014a4e7	132	PACK_STRUCT_FIELD(u8_t _proto);
slowness	0:58c3d014a4e7	133	/* checksum */
slowness	0:58c3d014a4e7	134	PACK_STRUCT_FIELD(u16_t _chksum);
slowness	0:58c3d014a4e7	135	/* source and destination IP addresses */
slowness	0:58c3d014a4e7	136	PACK_STRUCT_FIELD(ip_addr_p_t src);
slowness	0:58c3d014a4e7	137	PACK_STRUCT_FIELD(ip_addr_p_t dest);
slowness	0:58c3d014a4e7	138	} PACK_STRUCT_STRUCT;
slowness	0:58c3d014a4e7	139	PACK_STRUCT_END
slowness	0:58c3d014a4e7	140	#ifdef PACK_STRUCT_USE_INCLUDES
slowness	0:58c3d014a4e7	141	# include "arch/epstruct.h"
slowness	0:58c3d014a4e7	142	#endif
slowness	0:58c3d014a4e7	143
slowness	0:58c3d014a4e7	144	#define IPH_V(hdr) (ntohs((hdr)->_v_hl_tos) >> 12)
slowness	0:58c3d014a4e7	145	#define IPH_HL(hdr) ((ntohs((hdr)->_v_hl_tos) >> 8) & 0x0f)
slowness	0:58c3d014a4e7	146	#define IPH_TOS(hdr) (ntohs((hdr)->_v_hl_tos) & 0xff)
slowness	0:58c3d014a4e7	147	#define IPH_LEN(hdr) ((hdr)->_len)
slowness	0:58c3d014a4e7	148	#define IPH_ID(hdr) ((hdr)->_id)
slowness	0:58c3d014a4e7	149	#define IPH_OFFSET(hdr) ((hdr)->_offset)
slowness	0:58c3d014a4e7	150	#define IPH_TTL(hdr) ((hdr)->_ttl)
slowness	0:58c3d014a4e7	151	#define IPH_PROTO(hdr) ((hdr)->_proto)
slowness	0:58c3d014a4e7	152	#define IPH_CHKSUM(hdr) ((hdr)->_chksum)
slowness	0:58c3d014a4e7	153
slowness	0:58c3d014a4e7	154	#define IPH_VHLTOS_SET(hdr, v, hl, tos) (hdr)->_v_hl_tos = (htons(((v) << 12) \| ((hl) << 8) \| (tos)))
slowness	0:58c3d014a4e7	155	#define IPH_LEN_SET(hdr, len) (hdr)->_len = (len)
slowness	0:58c3d014a4e7	156	#define IPH_ID_SET(hdr, id) (hdr)->_id = (id)
slowness	0:58c3d014a4e7	157	#define IPH_OFFSET_SET(hdr, off) (hdr)->_offset = (off)
slowness	0:58c3d014a4e7	158	#define IPH_TTL_SET(hdr, ttl) (hdr)->_ttl = (u8_t)(ttl)
slowness	0:58c3d014a4e7	159	#define IPH_PROTO_SET(hdr, proto) (hdr)->_proto = (u8_t)(proto)
slowness	0:58c3d014a4e7	160	#define IPH_CHKSUM_SET(hdr, chksum) (hdr)->_chksum = (chksum)
slowness	0:58c3d014a4e7	161
slowness	0:58c3d014a4e7	162	/** The interface that provided the packet for the current callback invocation. */
slowness	0:58c3d014a4e7	163	extern struct netif *current_netif;
slowness	0:58c3d014a4e7	164	/** Header of the input packet currently being processed. */
slowness	0:58c3d014a4e7	165	extern const struct ip_hdr *current_header;
slowness	0:58c3d014a4e7	166	/** Source IP address of current_header */
slowness	0:58c3d014a4e7	167	extern ip_addr_t current_iphdr_src;
slowness	0:58c3d014a4e7	168	/** Destination IP address of current_header */
slowness	0:58c3d014a4e7	169	extern ip_addr_t current_iphdr_dest;
slowness	0:58c3d014a4e7	170
slowness	0:58c3d014a4e7	171	#define ip_init() /* Compatibility define, not init needed. */
slowness	0:58c3d014a4e7	172	struct netif ip_route(ip_addr_t dest);
slowness	0:58c3d014a4e7	173	err_t ip_input(struct pbuf p, struct netif inp);
slowness	0:58c3d014a4e7	174	err_t ip_output(struct pbuf p, ip_addr_t src, ip_addr_t *dest,
slowness	0:58c3d014a4e7	175	u8_t ttl, u8_t tos, u8_t proto);
slowness	0:58c3d014a4e7	176	err_t ip_output_if(struct pbuf p, ip_addr_t src, ip_addr_t *dest,
slowness	0:58c3d014a4e7	177	u8_t ttl, u8_t tos, u8_t proto,
slowness	0:58c3d014a4e7	178	struct netif *netif);
slowness	0:58c3d014a4e7	179	#if LWIP_NETIF_HWADDRHINT
slowness	0:58c3d014a4e7	180	err_t ip_output_hinted(struct pbuf p, ip_addr_t src, ip_addr_t *dest,
slowness	0:58c3d014a4e7	181	u8_t ttl, u8_t tos, u8_t proto, u8_t *addr_hint);
slowness	0:58c3d014a4e7	182	#endif /* LWIP_NETIF_HWADDRHINT */
slowness	0:58c3d014a4e7	183	#if IP_OPTIONS_SEND
slowness	0:58c3d014a4e7	184	err_t ip_output_if_opt(struct pbuf p, ip_addr_t src, ip_addr_t *dest,
slowness	0:58c3d014a4e7	185	u8_t ttl, u8_t tos, u8_t proto, struct netif netif, void ip_options,
slowness	0:58c3d014a4e7	186	u16_t optlen);
slowness	0:58c3d014a4e7	187	#endif /* IP_OPTIONS_SEND */
slowness	0:58c3d014a4e7	188	/** Get the interface that received the current packet.
slowness	0:58c3d014a4e7	189	* This function must only be called from a receive callback (udp_recv,
slowness	0:58c3d014a4e7	190	* raw_recv, tcp_accept). It will return NULL otherwise. */
slowness	0:58c3d014a4e7	191	#define ip_current_netif() (current_netif)
slowness	0:58c3d014a4e7	192	/** Get the IP header of the current packet.
slowness	0:58c3d014a4e7	193	* This function must only be called from a receive callback (udp_recv,
slowness	0:58c3d014a4e7	194	* raw_recv, tcp_accept). It will return NULL otherwise. */
slowness	0:58c3d014a4e7	195	#define ip_current_header() (current_header)
slowness	0:58c3d014a4e7	196	/** Source IP address of current_header */
slowness	0:58c3d014a4e7	197	#define ip_current_src_addr() (&current_iphdr_src)
slowness	0:58c3d014a4e7	198	/** Destination IP address of current_header */
slowness	0:58c3d014a4e7	199	#define ip_current_dest_addr() (&current_iphdr_dest)
slowness	0:58c3d014a4e7	200
slowness	0:58c3d014a4e7	201	#if IP_DEBUG
slowness	0:58c3d014a4e7	202	void ip_debug_print(struct pbuf *p);
slowness	0:58c3d014a4e7	203	#else
slowness	0:58c3d014a4e7	204	#define ip_debug_print(p)
slowness	0:58c3d014a4e7	205	#endif /* IP_DEBUG */
slowness	0:58c3d014a4e7	206
slowness	0:58c3d014a4e7	207	#ifdef __cplusplus
slowness	0:58c3d014a4e7	208	}
slowness	0:58c3d014a4e7	209	#endif
slowness	0:58c3d014a4e7	210
slowness	0:58c3d014a4e7	211	#endif /* __LWIP_IP_H__ */
slowness	0:58c3d014a4e7	212
slowness	0:58c3d014a4e7	213

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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/LPC1768/lwip/include/ipv4/lwip/ip.h@0:58c3d014a4e7, 2011-09-06 (annotated)

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