UDPtest - Some quick code to use UDP-only (no TCP) with mBe…

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Some quick code to use UDP-only (no TCP) with mBed. Echos received packets and sends packets when a button is pressed

Core/lwIP/include/ipv4/lwip/ip.h@0:a548a085de55, 2010-03-14 (annotated)

Committer:: pehrhovey
Date:: Sun Mar 14 00:54:12 2010 +0000
Revision:: 0:a548a085de55

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User	Revision	Line number	New contents of line
pehrhovey	0:a548a085de55	1	/*
pehrhovey	0:a548a085de55	2	* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
pehrhovey	0:a548a085de55	3	* All rights reserved.
pehrhovey	0:a548a085de55	4	*
pehrhovey	0:a548a085de55	5	* Redistribution and use in source and binary forms, with or without modification,
pehrhovey	0:a548a085de55	6	* are permitted provided that the following conditions are met:
pehrhovey	0:a548a085de55	7	*
pehrhovey	0:a548a085de55	8	* 1. Redistributions of source code must retain the above copyright notice,
pehrhovey	0:a548a085de55	9	* this list of conditions and the following disclaimer.
pehrhovey	0:a548a085de55	10	* 2. Redistributions in binary form must reproduce the above copyright notice,
pehrhovey	0:a548a085de55	11	* this list of conditions and the following disclaimer in the documentation
pehrhovey	0:a548a085de55	12	* and/or other materials provided with the distribution.
pehrhovey	0:a548a085de55	13	* 3. The name of the author may not be used to endorse or promote products
pehrhovey	0:a548a085de55	14	* derived from this software without specific prior written permission.
pehrhovey	0:a548a085de55	15	*
pehrhovey	0:a548a085de55	16	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
pehrhovey	0:a548a085de55	17	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
pehrhovey	0:a548a085de55	18	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
pehrhovey	0:a548a085de55	19	* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
pehrhovey	0:a548a085de55	20	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
pehrhovey	0:a548a085de55	21	* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
pehrhovey	0:a548a085de55	22	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
pehrhovey	0:a548a085de55	23	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
pehrhovey	0:a548a085de55	24	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
pehrhovey	0:a548a085de55	25	* OF SUCH DAMAGE.
pehrhovey	0:a548a085de55	26	*
pehrhovey	0:a548a085de55	27	* This file is part of the lwIP TCP/IP stack.
pehrhovey	0:a548a085de55	28	*
pehrhovey	0:a548a085de55	29	* Author: Adam Dunkels <adam@sics.se>
pehrhovey	0:a548a085de55	30	*
pehrhovey	0:a548a085de55	31	*/
pehrhovey	0:a548a085de55	32	#ifndef __LWIP_IP_H__
pehrhovey	0:a548a085de55	33	#define __LWIP_IP_H__
pehrhovey	0:a548a085de55	34
pehrhovey	0:a548a085de55	35	#include "lwip/opt.h"
pehrhovey	0:a548a085de55	36
pehrhovey	0:a548a085de55	37	#include "lwip/def.h"
pehrhovey	0:a548a085de55	38	#include "lwip/pbuf.h"
pehrhovey	0:a548a085de55	39	#include "lwip/ip_addr.h"
pehrhovey	0:a548a085de55	40	#include "lwip/err.h"
pehrhovey	0:a548a085de55	41	#include "lwip/netif.h"
pehrhovey	0:a548a085de55	42
pehrhovey	0:a548a085de55	43	#ifdef __cplusplus
pehrhovey	0:a548a085de55	44	extern "C" {
pehrhovey	0:a548a085de55	45	#endif
pehrhovey	0:a548a085de55	46
pehrhovey	0:a548a085de55	47	/** Currently, the function ip_output_if_opt() is only used with IGMP */
pehrhovey	0:a548a085de55	48	#define IP_OPTIONS_SEND LWIP_IGMP
pehrhovey	0:a548a085de55	49
pehrhovey	0:a548a085de55	50	#define IP_HLEN 20
pehrhovey	0:a548a085de55	51
pehrhovey	0:a548a085de55	52	#define IP_PROTO_ICMP 1
pehrhovey	0:a548a085de55	53	#define IP_PROTO_UDP 17
pehrhovey	0:a548a085de55	54	#define IP_PROTO_UDPLITE 136
pehrhovey	0:a548a085de55	55	#define IP_PROTO_TCP 6
pehrhovey	0:a548a085de55	56
pehrhovey	0:a548a085de55	57	/* This is passed as the destination address to ip_output_if (not
pehrhovey	0:a548a085de55	58	to ip_output), meaning that an IP header already is constructed
pehrhovey	0:a548a085de55	59	in the pbuf. This is used when TCP retransmits. */
pehrhovey	0:a548a085de55	60	#ifdef IP_HDRINCL
pehrhovey	0:a548a085de55	61	#undef IP_HDRINCL
pehrhovey	0:a548a085de55	62	#endif /* IP_HDRINCL */
pehrhovey	0:a548a085de55	63	#define IP_HDRINCL NULL
pehrhovey	0:a548a085de55	64
pehrhovey	0:a548a085de55	65	#if LWIP_NETIF_HWADDRHINT
pehrhovey	0:a548a085de55	66	#define IP_PCB_ADDRHINT ;u8_t addr_hint
pehrhovey	0:a548a085de55	67	#else
pehrhovey	0:a548a085de55	68	#define IP_PCB_ADDRHINT
pehrhovey	0:a548a085de55	69	#endif /* LWIP_NETIF_HWADDRHINT */
pehrhovey	0:a548a085de55	70
pehrhovey	0:a548a085de55	71	/* This is the common part of all PCB types. It needs to be at the
pehrhovey	0:a548a085de55	72	beginning of a PCB type definition. It is located here so that
pehrhovey	0:a548a085de55	73	changes to this common part are made in one location instead of
pehrhovey	0:a548a085de55	74	having to change all PCB structs. */
pehrhovey	0:a548a085de55	75	#define IP_PCB \
pehrhovey	0:a548a085de55	76	/* ip addresses in network byte order */ \
pehrhovey	0:a548a085de55	77	struct ip_addr local_ip; \
pehrhovey	0:a548a085de55	78	struct ip_addr remote_ip; \
pehrhovey	0:a548a085de55	79	/* Socket options */ \
pehrhovey	0:a548a085de55	80	u16_t so_options; \
pehrhovey	0:a548a085de55	81	/* Type Of Service */ \
pehrhovey	0:a548a085de55	82	u8_t tos; \
pehrhovey	0:a548a085de55	83	/* Time To Live */ \
pehrhovey	0:a548a085de55	84	u8_t ttl \
pehrhovey	0:a548a085de55	85	/* link layer address resolution hint */ \
pehrhovey	0:a548a085de55	86	IP_PCB_ADDRHINT
pehrhovey	0:a548a085de55	87
pehrhovey	0:a548a085de55	88	struct ip_pcb {
pehrhovey	0:a548a085de55	89	/* Common members of all PCB types */
pehrhovey	0:a548a085de55	90	IP_PCB;
pehrhovey	0:a548a085de55	91	};
pehrhovey	0:a548a085de55	92
pehrhovey	0:a548a085de55	93	/*
pehrhovey	0:a548a085de55	94	* Option flags per-socket. These are the same like SO_XXX.
pehrhovey	0:a548a085de55	95	*/
pehrhovey	0:a548a085de55	96	#define SOF_DEBUG (u16_t)0x0001U /* turn on debugging info recording */
pehrhovey	0:a548a085de55	97	#define SOF_ACCEPTCONN (u16_t)0x0002U /* socket has had listen() */
pehrhovey	0:a548a085de55	98	#define SOF_REUSEADDR (u16_t)0x0004U /* allow local address reuse */
pehrhovey	0:a548a085de55	99	#define SOF_KEEPALIVE (u16_t)0x0008U /* keep connections alive */
pehrhovey	0:a548a085de55	100	#define SOF_DONTROUTE (u16_t)0x0010U /* just use interface addresses */
pehrhovey	0:a548a085de55	101	#define SOF_BROADCAST (u16_t)0x0020U /* permit to send and to receive broadcast messages (see IP_SOF_BROADCAST option) */
pehrhovey	0:a548a085de55	102	#define SOF_USELOOPBACK (u16_t)0x0040U /* bypass hardware when possible */
pehrhovey	0:a548a085de55	103	#define SOF_LINGER (u16_t)0x0080U /* linger on close if data present */
pehrhovey	0:a548a085de55	104	#define SOF_OOBINLINE (u16_t)0x0100U /* leave received OOB data in line */
pehrhovey	0:a548a085de55	105	#define SOF_REUSEPORT (u16_t)0x0200U /* allow local address & port reuse */
pehrhovey	0:a548a085de55	106
pehrhovey	0:a548a085de55	107
pehrhovey	0:a548a085de55	108	#ifdef PACK_STRUCT_USE_INCLUDES
pehrhovey	0:a548a085de55	109	# include "arch/bpstruct.h"
pehrhovey	0:a548a085de55	110	#endif
pehrhovey	0:a548a085de55	111	PACK_STRUCT_BEGIN
pehrhovey	0:a548a085de55	112	struct ip_hdr {
pehrhovey	0:a548a085de55	113	/* version / header length / type of service */
pehrhovey	0:a548a085de55	114	PACK_STRUCT_FIELD(u16_t _v_hl_tos);
pehrhovey	0:a548a085de55	115	/* total length */
pehrhovey	0:a548a085de55	116	PACK_STRUCT_FIELD(u16_t _len);
pehrhovey	0:a548a085de55	117	/* identification */
pehrhovey	0:a548a085de55	118	PACK_STRUCT_FIELD(u16_t _id);
pehrhovey	0:a548a085de55	119	/* fragment offset field */
pehrhovey	0:a548a085de55	120	PACK_STRUCT_FIELD(u16_t _offset);
pehrhovey	0:a548a085de55	121	#define IP_RF 0x8000 /* reserved fragment flag */
pehrhovey	0:a548a085de55	122	#define IP_DF 0x4000 /* dont fragment flag */
pehrhovey	0:a548a085de55	123	#define IP_MF 0x2000 /* more fragments flag */
pehrhovey	0:a548a085de55	124	#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
pehrhovey	0:a548a085de55	125	/* time to live / protocol*/
pehrhovey	0:a548a085de55	126	PACK_STRUCT_FIELD(u16_t _ttl_proto);
pehrhovey	0:a548a085de55	127	/* checksum */
pehrhovey	0:a548a085de55	128	PACK_STRUCT_FIELD(u16_t _chksum);
pehrhovey	0:a548a085de55	129	/* source and destination IP addresses */
pehrhovey	0:a548a085de55	130	PACK_STRUCT_FIELD(struct ip_addr src);
pehrhovey	0:a548a085de55	131	PACK_STRUCT_FIELD(struct ip_addr dest);
pehrhovey	0:a548a085de55	132	} PACK_STRUCT_STRUCT;
pehrhovey	0:a548a085de55	133	PACK_STRUCT_END
pehrhovey	0:a548a085de55	134	#ifdef PACK_STRUCT_USE_INCLUDES
pehrhovey	0:a548a085de55	135	# include "arch/epstruct.h"
pehrhovey	0:a548a085de55	136	#endif
pehrhovey	0:a548a085de55	137
pehrhovey	0:a548a085de55	138	#define IPH_V(hdr) (ntohs((hdr)->_v_hl_tos) >> 12)
pehrhovey	0:a548a085de55	139	#define IPH_HL(hdr) ((ntohs((hdr)->_v_hl_tos) >> 8) & 0x0f)
pehrhovey	0:a548a085de55	140	#define IPH_TOS(hdr) (ntohs((hdr)->_v_hl_tos) & 0xff)
pehrhovey	0:a548a085de55	141	#define IPH_LEN(hdr) ((hdr)->_len)
pehrhovey	0:a548a085de55	142	#define IPH_ID(hdr) ((hdr)->_id)
pehrhovey	0:a548a085de55	143	#define IPH_OFFSET(hdr) ((hdr)->_offset)
pehrhovey	0:a548a085de55	144	#define IPH_TTL(hdr) (ntohs((hdr)->_ttl_proto) >> 8)
pehrhovey	0:a548a085de55	145	#define IPH_PROTO(hdr) (ntohs((hdr)->_ttl_proto) & 0xff)
pehrhovey	0:a548a085de55	146	#define IPH_CHKSUM(hdr) ((hdr)->_chksum)
pehrhovey	0:a548a085de55	147
pehrhovey	0:a548a085de55	148	#define IPH_VHLTOS_SET(hdr, v, hl, tos) (hdr)->_v_hl_tos = (htons(((v) << 12) \| ((hl) << 8) \| (tos)))
pehrhovey	0:a548a085de55	149	#define IPH_LEN_SET(hdr, len) (hdr)->_len = (len)
pehrhovey	0:a548a085de55	150	#define IPH_ID_SET(hdr, id) (hdr)->_id = (id)
pehrhovey	0:a548a085de55	151	#define IPH_OFFSET_SET(hdr, off) (hdr)->_offset = (off)
pehrhovey	0:a548a085de55	152	#define IPH_TTL_SET(hdr, ttl) (hdr)->_ttl_proto = (htons(IPH_PROTO(hdr) \| ((u16_t)(ttl) << 8)))
pehrhovey	0:a548a085de55	153	#define IPH_PROTO_SET(hdr, proto) (hdr)->_ttl_proto = (htons((proto) \| (IPH_TTL(hdr) << 8)))
pehrhovey	0:a548a085de55	154	#define IPH_CHKSUM_SET(hdr, chksum) (hdr)->_chksum = (chksum)
pehrhovey	0:a548a085de55	155
pehrhovey	0:a548a085de55	156	/** The interface that provided the packet for the current callback invocation. */
pehrhovey	0:a548a085de55	157	extern struct netif *current_netif;
pehrhovey	0:a548a085de55	158	/** Header of the input packet currently being processed. */
pehrhovey	0:a548a085de55	159	extern const struct ip_hdr *current_header;
pehrhovey	0:a548a085de55	160
pehrhovey	0:a548a085de55	161	#define ip_init() /* Compatibility define, not init needed. */
pehrhovey	0:a548a085de55	162	struct netif ip_route(struct ip_addr dest);
pehrhovey	0:a548a085de55	163	err_t ip_input(struct pbuf p, struct netif inp);
pehrhovey	0:a548a085de55	164	err_t ip_output(struct pbuf p, struct ip_addr src, struct ip_addr *dest,
pehrhovey	0:a548a085de55	165	u8_t ttl, u8_t tos, u8_t proto);
pehrhovey	0:a548a085de55	166	err_t ip_output_if(struct pbuf p, struct ip_addr src, struct ip_addr *dest,
pehrhovey	0:a548a085de55	167	u8_t ttl, u8_t tos, u8_t proto,
pehrhovey	0:a548a085de55	168	struct netif *netif);
pehrhovey	0:a548a085de55	169	#if LWIP_NETIF_HWADDRHINT
pehrhovey	0:a548a085de55	170	err_t ip_output_hinted(struct pbuf p, struct ip_addr src, struct ip_addr *dest,
pehrhovey	0:a548a085de55	171	u8_t ttl, u8_t tos, u8_t proto, u8_t *addr_hint);
pehrhovey	0:a548a085de55	172	#endif /* LWIP_NETIF_HWADDRHINT */
pehrhovey	0:a548a085de55	173	#if IP_OPTIONS_SEND
pehrhovey	0:a548a085de55	174	err_t ip_output_if_opt(struct pbuf p, struct ip_addr src, struct ip_addr *dest,
pehrhovey	0:a548a085de55	175	u8_t ttl, u8_t tos, u8_t proto, struct netif netif, void ip_options,
pehrhovey	0:a548a085de55	176	u16_t optlen);
pehrhovey	0:a548a085de55	177	#endif /* IP_OPTIONS_SEND */
pehrhovey	0:a548a085de55	178	/** Get the interface that received the current packet.
pehrhovey	0:a548a085de55	179	* This function must only be called from a receive callback (udp_recv,
pehrhovey	0:a548a085de55	180	* raw_recv, tcp_accept). It will return NULL otherwise. */
pehrhovey	0:a548a085de55	181	#define ip_current_netif() (current_netif)
pehrhovey	0:a548a085de55	182	/** Get the IP header of the current packet.
pehrhovey	0:a548a085de55	183	* This function must only be called from a receive callback (udp_recv,
pehrhovey	0:a548a085de55	184	* raw_recv, tcp_accept). It will return NULL otherwise. */
pehrhovey	0:a548a085de55	185	#define ip_current_header() (current_header)
pehrhovey	0:a548a085de55	186	#if IP_DEBUG
pehrhovey	0:a548a085de55	187	void ip_debug_print(struct pbuf *p);
pehrhovey	0:a548a085de55	188	#else
pehrhovey	0:a548a085de55	189	#define ip_debug_print(p)
pehrhovey	0:a548a085de55	190	#endif /* IP_DEBUG */
pehrhovey	0:a548a085de55	191
pehrhovey	0:a548a085de55	192	#ifdef __cplusplus
pehrhovey	0:a548a085de55	193	}
pehrhovey	0:a548a085de55	194	#endif
pehrhovey	0:a548a085de55	195
pehrhovey	0:a548a085de55	196	#endif /* __LWIP_IP_H__ */
pehrhovey	0:a548a085de55	197
pehrhovey	0:a548a085de55	198

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	14 Mar 2010
Imports:	240
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	5

Core/lwIP/include/ipv4/lwip/ip.h@0:a548a085de55, 2010-03-14 (annotated)

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