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lwip/include/netif/etharp.h@0:ac21159e27f4, 2010-07-02 (annotated)

Committer:: darran
Date:: Fri Jul 02 17:21:58 2010 +0000
Revision:: 0:ac21159e27f4

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User	Revision	Line number	New contents of line
darran	0:ac21159e27f4	1	/*
darran	0:ac21159e27f4	2	* Copyright (c) 2001-2003 Swedish Institute of Computer Science.
darran	0:ac21159e27f4	3	* Copyright (c) 2003-2004 Leon Woestenberg <leon.woestenberg@axon.tv>
darran	0:ac21159e27f4	4	* Copyright (c) 2003-2004 Axon Digital Design B.V., The Netherlands.
darran	0:ac21159e27f4	5	* All rights reserved.
darran	0:ac21159e27f4	6	*
darran	0:ac21159e27f4	7	* Redistribution and use in source and binary forms, with or without modification,
darran	0:ac21159e27f4	8	* are permitted provided that the following conditions are met:
darran	0:ac21159e27f4	9	*
darran	0:ac21159e27f4	10	* 1. Redistributions of source code must retain the above copyright notice,
darran	0:ac21159e27f4	11	* this list of conditions and the following disclaimer.
darran	0:ac21159e27f4	12	* 2. Redistributions in binary form must reproduce the above copyright notice,
darran	0:ac21159e27f4	13	* this list of conditions and the following disclaimer in the documentation
darran	0:ac21159e27f4	14	* and/or other materials provided with the distribution.
darran	0:ac21159e27f4	15	* 3. The name of the author may not be used to endorse or promote products
darran	0:ac21159e27f4	16	* derived from this software without specific prior written permission.
darran	0:ac21159e27f4	17	*
darran	0:ac21159e27f4	18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
darran	0:ac21159e27f4	19	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
darran	0:ac21159e27f4	20	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
darran	0:ac21159e27f4	21	* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
darran	0:ac21159e27f4	22	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
darran	0:ac21159e27f4	23	* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
darran	0:ac21159e27f4	24	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
darran	0:ac21159e27f4	25	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
darran	0:ac21159e27f4	26	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
darran	0:ac21159e27f4	27	* OF SUCH DAMAGE.
darran	0:ac21159e27f4	28	*
darran	0:ac21159e27f4	29	* This file is part of the lwIP TCP/IP stack.
darran	0:ac21159e27f4	30	*
darran	0:ac21159e27f4	31	* Author: Adam Dunkels <adam@sics.se>
darran	0:ac21159e27f4	32	*
darran	0:ac21159e27f4	33	*/
darran	0:ac21159e27f4	34
darran	0:ac21159e27f4	35	#ifndef __NETIF_ETHARP_H__
darran	0:ac21159e27f4	36	#define __NETIF_ETHARP_H__
darran	0:ac21159e27f4	37
darran	0:ac21159e27f4	38	#include "lwip/opt.h"
darran	0:ac21159e27f4	39
darran	0:ac21159e27f4	40	#if LWIP_ARP \|\| LWIP_ETHERNET /* don't build if not configured for use in lwipopts.h */
darran	0:ac21159e27f4	41
darran	0:ac21159e27f4	42	#include "lwip/pbuf.h"
darran	0:ac21159e27f4	43	#include "lwip/ip_addr.h"
darran	0:ac21159e27f4	44	#include "lwip/netif.h"
darran	0:ac21159e27f4	45	#include "lwip/ip.h"
darran	0:ac21159e27f4	46
darran	0:ac21159e27f4	47	#ifdef __cplusplus
darran	0:ac21159e27f4	48	extern "C" {
darran	0:ac21159e27f4	49	#endif
darran	0:ac21159e27f4	50
darran	0:ac21159e27f4	51	#ifndef ETHARP_HWADDR_LEN
darran	0:ac21159e27f4	52	#define ETHARP_HWADDR_LEN 6
darran	0:ac21159e27f4	53	#endif
darran	0:ac21159e27f4	54
darran	0:ac21159e27f4	55	#ifdef PACK_STRUCT_USE_INCLUDES
darran	0:ac21159e27f4	56	# include "arch/bpstruct.h"
darran	0:ac21159e27f4	57	#endif
darran	0:ac21159e27f4	58	PACK_STRUCT_BEGIN
darran	0:ac21159e27f4	59	struct eth_addr {
darran	0:ac21159e27f4	60	PACK_STRUCT_FIELD(u8_t addr[ETHARP_HWADDR_LEN]);
darran	0:ac21159e27f4	61	} PACK_STRUCT_STRUCT;
darran	0:ac21159e27f4	62	PACK_STRUCT_END
darran	0:ac21159e27f4	63	#ifdef PACK_STRUCT_USE_INCLUDES
darran	0:ac21159e27f4	64	# include "arch/epstruct.h"
darran	0:ac21159e27f4	65	#endif
darran	0:ac21159e27f4	66
darran	0:ac21159e27f4	67	#ifdef PACK_STRUCT_USE_INCLUDES
darran	0:ac21159e27f4	68	# include "arch/bpstruct.h"
darran	0:ac21159e27f4	69	#endif
darran	0:ac21159e27f4	70	PACK_STRUCT_BEGIN
darran	0:ac21159e27f4	71	/** Ethernet header */
darran	0:ac21159e27f4	72	struct eth_hdr {
darran	0:ac21159e27f4	73	#if ETH_PAD_SIZE
darran	0:ac21159e27f4	74	PACK_STRUCT_FIELD(u8_t padding[ETH_PAD_SIZE]);
darran	0:ac21159e27f4	75	#endif
darran	0:ac21159e27f4	76	PACK_STRUCT_FIELD(struct eth_addr dest);
darran	0:ac21159e27f4	77	PACK_STRUCT_FIELD(struct eth_addr src);
darran	0:ac21159e27f4	78	PACK_STRUCT_FIELD(u16_t type);
darran	0:ac21159e27f4	79	} PACK_STRUCT_STRUCT;
darran	0:ac21159e27f4	80	PACK_STRUCT_END
darran	0:ac21159e27f4	81	#ifdef PACK_STRUCT_USE_INCLUDES
darran	0:ac21159e27f4	82	# include "arch/epstruct.h"
darran	0:ac21159e27f4	83	#endif
darran	0:ac21159e27f4	84
darran	0:ac21159e27f4	85	#define SIZEOF_ETH_HDR (14 + ETH_PAD_SIZE)
darran	0:ac21159e27f4	86
darran	0:ac21159e27f4	87	#if ETHARP_SUPPORT_VLAN
darran	0:ac21159e27f4	88
darran	0:ac21159e27f4	89	#ifdef PACK_STRUCT_USE_INCLUDES
darran	0:ac21159e27f4	90	# include "arch/bpstruct.h"
darran	0:ac21159e27f4	91	#endif
darran	0:ac21159e27f4	92	PACK_STRUCT_BEGIN
darran	0:ac21159e27f4	93	/** VLAN header inserted between ethernet header and payload
darran	0:ac21159e27f4	94	* if 'type' in ethernet header is ETHTYPE_VLAN.
darran	0:ac21159e27f4	95	* See IEEE802.Q */
darran	0:ac21159e27f4	96	struct eth_vlan_hdr {
darran	0:ac21159e27f4	97	PACK_STRUCT_FIELD(u16_t tpid);
darran	0:ac21159e27f4	98	PACK_STRUCT_FIELD(u16_t prio_vid);
darran	0:ac21159e27f4	99	} PACK_STRUCT_STRUCT;
darran	0:ac21159e27f4	100	PACK_STRUCT_END
darran	0:ac21159e27f4	101	#ifdef PACK_STRUCT_USE_INCLUDES
darran	0:ac21159e27f4	102	# include "arch/epstruct.h"
darran	0:ac21159e27f4	103	#endif
darran	0:ac21159e27f4	104
darran	0:ac21159e27f4	105	#define SIZEOF_VLAN_HDR 4
darran	0:ac21159e27f4	106	#define VLAN_ID(vlan_hdr) (htons((vlan_hdr)->prio_vid) & 0xFFF)
darran	0:ac21159e27f4	107
darran	0:ac21159e27f4	108	#endif /* ETHARP_SUPPORT_VLAN */
darran	0:ac21159e27f4	109
darran	0:ac21159e27f4	110	#ifdef PACK_STRUCT_USE_INCLUDES
darran	0:ac21159e27f4	111	# include "arch/bpstruct.h"
darran	0:ac21159e27f4	112	#endif
darran	0:ac21159e27f4	113	PACK_STRUCT_BEGIN
darran	0:ac21159e27f4	114	/** the ARP message, see RFC 826 ("Packet format") */
darran	0:ac21159e27f4	115	struct etharp_hdr {
darran	0:ac21159e27f4	116	PACK_STRUCT_FIELD(u16_t hwtype);
darran	0:ac21159e27f4	117	PACK_STRUCT_FIELD(u16_t proto);
darran	0:ac21159e27f4	118	PACK_STRUCT_FIELD(u16_t _hwlen_protolen);
darran	0:ac21159e27f4	119	PACK_STRUCT_FIELD(u16_t opcode);
darran	0:ac21159e27f4	120	PACK_STRUCT_FIELD(struct eth_addr shwaddr);
darran	0:ac21159e27f4	121	PACK_STRUCT_FIELD(struct ip_addr2 sipaddr);
darran	0:ac21159e27f4	122	PACK_STRUCT_FIELD(struct eth_addr dhwaddr);
darran	0:ac21159e27f4	123	PACK_STRUCT_FIELD(struct ip_addr2 dipaddr);
darran	0:ac21159e27f4	124	} PACK_STRUCT_STRUCT;
darran	0:ac21159e27f4	125	PACK_STRUCT_END
darran	0:ac21159e27f4	126	#ifdef PACK_STRUCT_USE_INCLUDES
darran	0:ac21159e27f4	127	# include "arch/epstruct.h"
darran	0:ac21159e27f4	128	#endif
darran	0:ac21159e27f4	129
darran	0:ac21159e27f4	130	#define SIZEOF_ETHARP_HDR 28
darran	0:ac21159e27f4	131	#define SIZEOF_ETHARP_PACKET (SIZEOF_ETH_HDR + SIZEOF_ETHARP_HDR)
darran	0:ac21159e27f4	132
darran	0:ac21159e27f4	133	/** 5 seconds period */
darran	0:ac21159e27f4	134	#define ARP_TMR_INTERVAL 5000
darran	0:ac21159e27f4	135
darran	0:ac21159e27f4	136	#define ETHTYPE_ARP 0x0806
darran	0:ac21159e27f4	137	#define ETHTYPE_IP 0x0800
darran	0:ac21159e27f4	138	#define ETHTYPE_VLAN 0x8100
darran	0:ac21159e27f4	139	#define ETHTYPE_PPPOEDISC 0x8863 /* PPP Over Ethernet Discovery Stage */
darran	0:ac21159e27f4	140	#define ETHTYPE_PPPOE 0x8864 /* PPP Over Ethernet Session Stage */
darran	0:ac21159e27f4	141
darran	0:ac21159e27f4	142	#if LWIP_ARP /* don't build if not configured for use in lwipopts.h */
darran	0:ac21159e27f4	143
darran	0:ac21159e27f4	144	/** ARP message types (opcodes) */
darran	0:ac21159e27f4	145	#define ARP_REQUEST 1
darran	0:ac21159e27f4	146	#define ARP_REPLY 2
darran	0:ac21159e27f4	147
darran	0:ac21159e27f4	148	#if ARP_QUEUEING
darran	0:ac21159e27f4	149	/** struct for queueing outgoing packets for unknown address
darran	0:ac21159e27f4	150	* defined here to be accessed by memp.h
darran	0:ac21159e27f4	151	*/
darran	0:ac21159e27f4	152	struct etharp_q_entry {
darran	0:ac21159e27f4	153	struct etharp_q_entry *next;
darran	0:ac21159e27f4	154	struct pbuf *p;
darran	0:ac21159e27f4	155	};
darran	0:ac21159e27f4	156	#endif /* ARP_QUEUEING */
darran	0:ac21159e27f4	157
darran	0:ac21159e27f4	158	#define etharp_init() /* Compatibility define, not init needed. */
darran	0:ac21159e27f4	159	void etharp_tmr(void);
darran	0:ac21159e27f4	160	s8_t etharp_find_addr(struct netif netif, ip_addr_t ipaddr,
darran	0:ac21159e27f4	161	struct eth_addr eth_ret, ip_addr_t ip_ret);
darran	0:ac21159e27f4	162	err_t etharp_output(struct netif netif, struct pbuf q, ip_addr_t *ipaddr);
darran	0:ac21159e27f4	163	err_t etharp_query(struct netif netif, ip_addr_t ipaddr, struct pbuf *q);
darran	0:ac21159e27f4	164	err_t etharp_request(struct netif netif, ip_addr_t ipaddr);
darran	0:ac21159e27f4	165	/** For Ethernet network interfaces, we might want to send "gratuitous ARP";
darran	0:ac21159e27f4	166	* this is an ARP packet sent by a node in order to spontaneously cause other
darran	0:ac21159e27f4	167	* nodes to update an entry in their ARP cache.
darran	0:ac21159e27f4	168	* From RFC 3220 "IP Mobility Support for IPv4" section 4.6. */
darran	0:ac21159e27f4	169	#define etharp_gratuitous(netif) etharp_request((netif), &(netif)->ip_addr)
darran	0:ac21159e27f4	170
darran	0:ac21159e27f4	171	#if LWIP_AUTOIP
darran	0:ac21159e27f4	172	err_t etharp_raw(struct netif netif, const struct eth_addr ethsrc_addr,
darran	0:ac21159e27f4	173	const struct eth_addr *ethdst_addr,
darran	0:ac21159e27f4	174	const struct eth_addr hwsrc_addr, const ip_addr_t ipsrc_addr,
darran	0:ac21159e27f4	175	const struct eth_addr hwdst_addr, const ip_addr_t ipdst_addr,
darran	0:ac21159e27f4	176	const u16_t opcode);
darran	0:ac21159e27f4	177	#endif /* LWIP_AUTOIP */
darran	0:ac21159e27f4	178
darran	0:ac21159e27f4	179
darran	0:ac21159e27f4	180	#endif /* LWIP_ARP */
darran	0:ac21159e27f4	181
darran	0:ac21159e27f4	182	err_t ethernet_input(struct pbuf p, struct netif netif);
darran	0:ac21159e27f4	183
darran	0:ac21159e27f4	184	#define eth_addr_cmp(addr1, addr2) (memcmp((addr1)->addr, (addr2)->addr, ETHARP_HWADDR_LEN) == 0)
darran	0:ac21159e27f4	185
darran	0:ac21159e27f4	186	extern const struct eth_addr ethbroadcast, ethzero;
darran	0:ac21159e27f4	187
darran	0:ac21159e27f4	188	#ifdef __cplusplus
darran	0:ac21159e27f4	189	}
darran	0:ac21159e27f4	190	#endif
darran	0:ac21159e27f4	191
darran	0:ac21159e27f4	192	#endif /* LWIP_ARP \|\| LWIP_ETHERNET */
darran	0:ac21159e27f4	193
darran	0:ac21159e27f4	194	#endif /* __NETIF_ARP_H__ */

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	02 Jul 2010
Imports:	2
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	1

lwip/include/netif/etharp.h@0:ac21159e27f4, 2010-07-02 (annotated)

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