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Core/lwIP/include/netif/etharp.h@0:6dee052a3fa4, 2011-07-26 (annotated)

Committer:: nandgate
Date:: Tue Jul 26 05:30:53 2011 +0000
Revision:: 0:6dee052a3fa4

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User	Revision	Line number	New contents of line
nandgate	0:6dee052a3fa4	1	/*
nandgate	0:6dee052a3fa4	2	* Copyright (c) 2001-2003 Swedish Institute of Computer Science.
nandgate	0:6dee052a3fa4	3	* Copyright (c) 2003-2004 Leon Woestenberg <leon.woestenberg@axon.tv>
nandgate	0:6dee052a3fa4	4	* Copyright (c) 2003-2004 Axon Digital Design B.V., The Netherlands.
nandgate	0:6dee052a3fa4	5	* All rights reserved.
nandgate	0:6dee052a3fa4	6	*
nandgate	0:6dee052a3fa4	7	* Redistribution and use in source and binary forms, with or without modification,
nandgate	0:6dee052a3fa4	8	* are permitted provided that the following conditions are met:
nandgate	0:6dee052a3fa4	9	*
nandgate	0:6dee052a3fa4	10	* 1. Redistributions of source code must retain the above copyright notice,
nandgate	0:6dee052a3fa4	11	* this list of conditions and the following disclaimer.
nandgate	0:6dee052a3fa4	12	* 2. Redistributions in binary form must reproduce the above copyright notice,
nandgate	0:6dee052a3fa4	13	* this list of conditions and the following disclaimer in the documentation
nandgate	0:6dee052a3fa4	14	* and/or other materials provided with the distribution.
nandgate	0:6dee052a3fa4	15	* 3. The name of the author may not be used to endorse or promote products
nandgate	0:6dee052a3fa4	16	* derived from this software without specific prior written permission.
nandgate	0:6dee052a3fa4	17	*
nandgate	0:6dee052a3fa4	18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
nandgate	0:6dee052a3fa4	19	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
nandgate	0:6dee052a3fa4	20	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
nandgate	0:6dee052a3fa4	21	* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
nandgate	0:6dee052a3fa4	22	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
nandgate	0:6dee052a3fa4	23	* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
nandgate	0:6dee052a3fa4	24	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
nandgate	0:6dee052a3fa4	25	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
nandgate	0:6dee052a3fa4	26	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
nandgate	0:6dee052a3fa4	27	* OF SUCH DAMAGE.
nandgate	0:6dee052a3fa4	28	*
nandgate	0:6dee052a3fa4	29	* This file is part of the lwIP TCP/IP stack.
nandgate	0:6dee052a3fa4	30	*
nandgate	0:6dee052a3fa4	31	* Author: Adam Dunkels <adam@sics.se>
nandgate	0:6dee052a3fa4	32	*
nandgate	0:6dee052a3fa4	33	*/
nandgate	0:6dee052a3fa4	34
nandgate	0:6dee052a3fa4	35	#ifndef __NETIF_ETHARP_H__
nandgate	0:6dee052a3fa4	36	#define __NETIF_ETHARP_H__
nandgate	0:6dee052a3fa4	37
nandgate	0:6dee052a3fa4	38	#include "lwip/opt.h"
nandgate	0:6dee052a3fa4	39
nandgate	0:6dee052a3fa4	40	#if LWIP_ARP /* don't build if not configured for use in lwipopts.h */
nandgate	0:6dee052a3fa4	41
nandgate	0:6dee052a3fa4	42	#include "lwip/pbuf.h"
nandgate	0:6dee052a3fa4	43	#include "lwip/ip_addr.h"
nandgate	0:6dee052a3fa4	44	#include "lwip/netif.h"
nandgate	0:6dee052a3fa4	45	#include "lwip/ip.h"
nandgate	0:6dee052a3fa4	46
nandgate	0:6dee052a3fa4	47	#ifdef __cplusplus
nandgate	0:6dee052a3fa4	48	extern "C" {
nandgate	0:6dee052a3fa4	49	#endif
nandgate	0:6dee052a3fa4	50
nandgate	0:6dee052a3fa4	51	#ifndef ETH_PAD_SIZE
nandgate	0:6dee052a3fa4	52	#define ETH_PAD_SIZE 0
nandgate	0:6dee052a3fa4	53	#endif
nandgate	0:6dee052a3fa4	54
nandgate	0:6dee052a3fa4	55	#ifndef ETHARP_HWADDR_LEN
nandgate	0:6dee052a3fa4	56	#define ETHARP_HWADDR_LEN 6
nandgate	0:6dee052a3fa4	57	#endif
nandgate	0:6dee052a3fa4	58
nandgate	0:6dee052a3fa4	59	#ifdef PACK_STRUCT_USE_INCLUDES
nandgate	0:6dee052a3fa4	60	# include "arch/bpstruct.h"
nandgate	0:6dee052a3fa4	61	#endif
nandgate	0:6dee052a3fa4	62	PACK_STRUCT_BEGIN
nandgate	0:6dee052a3fa4	63	struct eth_addr {
nandgate	0:6dee052a3fa4	64	PACK_STRUCT_FIELD(u8_t addr[ETHARP_HWADDR_LEN]);
nandgate	0:6dee052a3fa4	65	} PACK_STRUCT_STRUCT;
nandgate	0:6dee052a3fa4	66	PACK_STRUCT_END
nandgate	0:6dee052a3fa4	67	#ifdef PACK_STRUCT_USE_INCLUDES
nandgate	0:6dee052a3fa4	68	# include "arch/epstruct.h"
nandgate	0:6dee052a3fa4	69	#endif
nandgate	0:6dee052a3fa4	70
nandgate	0:6dee052a3fa4	71	#ifdef PACK_STRUCT_USE_INCLUDES
nandgate	0:6dee052a3fa4	72	# include "arch/bpstruct.h"
nandgate	0:6dee052a3fa4	73	#endif
nandgate	0:6dee052a3fa4	74	PACK_STRUCT_BEGIN
nandgate	0:6dee052a3fa4	75	struct eth_hdr {
nandgate	0:6dee052a3fa4	76	#if ETH_PAD_SIZE
nandgate	0:6dee052a3fa4	77	PACK_STRUCT_FIELD(u8_t padding[ETH_PAD_SIZE]);
nandgate	0:6dee052a3fa4	78	#endif
nandgate	0:6dee052a3fa4	79	PACK_STRUCT_FIELD(struct eth_addr dest);
nandgate	0:6dee052a3fa4	80	PACK_STRUCT_FIELD(struct eth_addr src);
nandgate	0:6dee052a3fa4	81	PACK_STRUCT_FIELD(u16_t type);
nandgate	0:6dee052a3fa4	82	} PACK_STRUCT_STRUCT;
nandgate	0:6dee052a3fa4	83	PACK_STRUCT_END
nandgate	0:6dee052a3fa4	84	#ifdef PACK_STRUCT_USE_INCLUDES
nandgate	0:6dee052a3fa4	85	# include "arch/epstruct.h"
nandgate	0:6dee052a3fa4	86	#endif
nandgate	0:6dee052a3fa4	87
nandgate	0:6dee052a3fa4	88	#define SIZEOF_ETH_HDR (14 + ETH_PAD_SIZE)
nandgate	0:6dee052a3fa4	89
nandgate	0:6dee052a3fa4	90	#if ETHARP_SUPPORT_VLAN
nandgate	0:6dee052a3fa4	91
nandgate	0:6dee052a3fa4	92	#ifdef PACK_STRUCT_USE_INCLUDES
nandgate	0:6dee052a3fa4	93	# include "arch/bpstruct.h"
nandgate	0:6dee052a3fa4	94	#endif
nandgate	0:6dee052a3fa4	95	PACK_STRUCT_BEGIN
nandgate	0:6dee052a3fa4	96	struct eth_vlan_hdr {
nandgate	0:6dee052a3fa4	97	PACK_STRUCT_FIELD(u16_t tpid);
nandgate	0:6dee052a3fa4	98	PACK_STRUCT_FIELD(u16_t prio_vid);
nandgate	0:6dee052a3fa4	99	} PACK_STRUCT_STRUCT;
nandgate	0:6dee052a3fa4	100	PACK_STRUCT_END
nandgate	0:6dee052a3fa4	101	#ifdef PACK_STRUCT_USE_INCLUDES
nandgate	0:6dee052a3fa4	102	# include "arch/epstruct.h"
nandgate	0:6dee052a3fa4	103	#endif
nandgate	0:6dee052a3fa4	104
nandgate	0:6dee052a3fa4	105	#define SIZEOF_VLAN_HDR 4
nandgate	0:6dee052a3fa4	106	#define VLAN_ID(vlan_hdr) (htons((vlan_hdr)->prio_vid) & 0xFFF)
nandgate	0:6dee052a3fa4	107
nandgate	0:6dee052a3fa4	108	#endif /* ETHARP_SUPPORT_VLAN */
nandgate	0:6dee052a3fa4	109
nandgate	0:6dee052a3fa4	110	#ifdef PACK_STRUCT_USE_INCLUDES
nandgate	0:6dee052a3fa4	111	# include "arch/bpstruct.h"
nandgate	0:6dee052a3fa4	112	#endif
nandgate	0:6dee052a3fa4	113	PACK_STRUCT_BEGIN
nandgate	0:6dee052a3fa4	114	/** the ARP message */
nandgate	0:6dee052a3fa4	115	struct etharp_hdr {
nandgate	0:6dee052a3fa4	116	PACK_STRUCT_FIELD(u16_t hwtype);
nandgate	0:6dee052a3fa4	117	PACK_STRUCT_FIELD(u16_t proto);
nandgate	0:6dee052a3fa4	118	PACK_STRUCT_FIELD(u16_t _hwlen_protolen);
nandgate	0:6dee052a3fa4	119	PACK_STRUCT_FIELD(u16_t opcode);
nandgate	0:6dee052a3fa4	120	PACK_STRUCT_FIELD(struct eth_addr shwaddr);
nandgate	0:6dee052a3fa4	121	PACK_STRUCT_FIELD(struct ip_addr2 sipaddr);
nandgate	0:6dee052a3fa4	122	PACK_STRUCT_FIELD(struct eth_addr dhwaddr);
nandgate	0:6dee052a3fa4	123	PACK_STRUCT_FIELD(struct ip_addr2 dipaddr);
nandgate	0:6dee052a3fa4	124	} PACK_STRUCT_STRUCT;
nandgate	0:6dee052a3fa4	125	PACK_STRUCT_END
nandgate	0:6dee052a3fa4	126	#ifdef PACK_STRUCT_USE_INCLUDES
nandgate	0:6dee052a3fa4	127	# include "arch/epstruct.h"
nandgate	0:6dee052a3fa4	128	#endif
nandgate	0:6dee052a3fa4	129
nandgate	0:6dee052a3fa4	130	#define SIZEOF_ETHARP_HDR 28
nandgate	0:6dee052a3fa4	131	#define SIZEOF_ETHARP_PACKET (SIZEOF_ETH_HDR + SIZEOF_ETHARP_HDR)
nandgate	0:6dee052a3fa4	132
nandgate	0:6dee052a3fa4	133	/** 5 seconds period */
nandgate	0:6dee052a3fa4	134	#define ARP_TMR_INTERVAL 5000
nandgate	0:6dee052a3fa4	135
nandgate	0:6dee052a3fa4	136	#define ETHTYPE_ARP 0x0806
nandgate	0:6dee052a3fa4	137	#define ETHTYPE_IP 0x0800
nandgate	0:6dee052a3fa4	138	#define ETHTYPE_VLAN 0x8100
nandgate	0:6dee052a3fa4	139	#define ETHTYPE_PPPOEDISC 0x8863 /* PPP Over Ethernet Discovery Stage */
nandgate	0:6dee052a3fa4	140	#define ETHTYPE_PPPOE 0x8864 /* PPP Over Ethernet Session Stage */
nandgate	0:6dee052a3fa4	141
nandgate	0:6dee052a3fa4	142	/** ARP message types (opcodes) */
nandgate	0:6dee052a3fa4	143	#define ARP_REQUEST 1
nandgate	0:6dee052a3fa4	144	#define ARP_REPLY 2
nandgate	0:6dee052a3fa4	145
nandgate	0:6dee052a3fa4	146	#if ARP_QUEUEING
nandgate	0:6dee052a3fa4	147	/** struct for queueing outgoing packets for unknown address
nandgate	0:6dee052a3fa4	148	* defined here to be accessed by memp.h
nandgate	0:6dee052a3fa4	149	*/
nandgate	0:6dee052a3fa4	150	struct etharp_q_entry {
nandgate	0:6dee052a3fa4	151	struct etharp_q_entry *next;
nandgate	0:6dee052a3fa4	152	struct pbuf *p;
nandgate	0:6dee052a3fa4	153	};
nandgate	0:6dee052a3fa4	154	#endif /* ARP_QUEUEING */
nandgate	0:6dee052a3fa4	155
nandgate	0:6dee052a3fa4	156	#define etharp_init() /* Compatibility define, not init needed. */
nandgate	0:6dee052a3fa4	157	void etharp_tmr(void);
nandgate	0:6dee052a3fa4	158	s8_t etharp_find_addr(struct netif netif, struct ip_addr ipaddr,
nandgate	0:6dee052a3fa4	159	struct eth_addr eth_ret, struct ip_addr ip_ret);
nandgate	0:6dee052a3fa4	160	void etharp_ip_input(struct netif netif, struct pbuf p);
nandgate	0:6dee052a3fa4	161	void etharp_arp_input(struct netif netif, struct eth_addr ethaddr,
nandgate	0:6dee052a3fa4	162	struct pbuf *p);
nandgate	0:6dee052a3fa4	163	err_t etharp_output(struct netif netif, struct pbuf q, struct ip_addr *ipaddr);
nandgate	0:6dee052a3fa4	164	err_t etharp_query(struct netif netif, struct ip_addr ipaddr, struct pbuf *q);
nandgate	0:6dee052a3fa4	165	err_t etharp_request(struct netif netif, struct ip_addr ipaddr);
nandgate	0:6dee052a3fa4	166	/** For Ethernet network interfaces, we might want to send "gratuitous ARP";
nandgate	0:6dee052a3fa4	167	* this is an ARP packet sent by a node in order to spontaneously cause other
nandgate	0:6dee052a3fa4	168	* nodes to update an entry in their ARP cache.
nandgate	0:6dee052a3fa4	169	* From RFC 3220 "IP Mobility Support for IPv4" section 4.6. */
nandgate	0:6dee052a3fa4	170	#define etharp_gratuitous(netif) etharp_request((netif), &(netif)->ip_addr)
nandgate	0:6dee052a3fa4	171
nandgate	0:6dee052a3fa4	172	err_t ethernet_input(struct pbuf p, struct netif netif);
nandgate	0:6dee052a3fa4	173
nandgate	0:6dee052a3fa4	174	#if LWIP_AUTOIP
nandgate	0:6dee052a3fa4	175	err_t etharp_raw(struct netif netif, const struct eth_addr ethsrc_addr,
nandgate	0:6dee052a3fa4	176	const struct eth_addr *ethdst_addr,
nandgate	0:6dee052a3fa4	177	const struct eth_addr hwsrc_addr, const struct ip_addr ipsrc_addr,
nandgate	0:6dee052a3fa4	178	const struct eth_addr hwdst_addr, const struct ip_addr ipdst_addr,
nandgate	0:6dee052a3fa4	179	const u16_t opcode);
nandgate	0:6dee052a3fa4	180	#endif /* LWIP_AUTOIP */
nandgate	0:6dee052a3fa4	181
nandgate	0:6dee052a3fa4	182	#define eth_addr_cmp(addr1, addr2) (memcmp((addr1)->addr, (addr2)->addr, ETHARP_HWADDR_LEN) == 0)
nandgate	0:6dee052a3fa4	183
nandgate	0:6dee052a3fa4	184	extern const struct eth_addr ethbroadcast, ethzero;
nandgate	0:6dee052a3fa4	185
nandgate	0:6dee052a3fa4	186	#ifdef __cplusplus
nandgate	0:6dee052a3fa4	187	}
nandgate	0:6dee052a3fa4	188	#endif
nandgate	0:6dee052a3fa4	189
nandgate	0:6dee052a3fa4	190	#endif /* LWIP_ARP */
nandgate	0:6dee052a3fa4	191
nandgate	0:6dee052a3fa4	192	#endif /* __NETIF_ARP_H__ */

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	26 Jul 2011
Imports:	159
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	2
Followers:	9

Core/lwIP/include/netif/etharp.h@0:6dee052a3fa4, 2011-07-26 (annotated)

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