221 lines
7.2 KiB
C
221 lines
7.2 KiB
C
/*
|
|
* Copyright (c) 2001-2003 Swedish Institute of Computer Science.
|
|
* Copyright (c) 2003-2004 Leon Woestenberg <leon.woestenberg@axon.tv>
|
|
* Copyright (c) 2003-2004 Axon Digital Design B.V., The Netherlands.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without modification,
|
|
* are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
|
|
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
|
|
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
|
|
* OF SUCH DAMAGE.
|
|
*
|
|
* This file is part of the lwIP TCP/IP stack.
|
|
*
|
|
* Author: Adam Dunkels <adam@sics.se>
|
|
*
|
|
*/
|
|
|
|
#ifndef __NETIF_ETHARP_H__
|
|
#define __NETIF_ETHARP_H__
|
|
|
|
#include "lwip/opt.h"
|
|
|
|
#if LWIP_ARP || LWIP_ETHERNET /* don't build if not configured for use in lwipopts.h */
|
|
|
|
#include "lwip/pbuf.h"
|
|
#include "lwip/ip_addr.h"
|
|
#include "lwip/netif.h"
|
|
#include "lwip/ip.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#ifndef ETHARP_HWADDR_LEN
|
|
#define ETHARP_HWADDR_LEN 6
|
|
#endif
|
|
|
|
#ifdef PACK_STRUCT_USE_INCLUDES
|
|
# include "arch/bpstruct.h"
|
|
#endif
|
|
PACK_STRUCT_BEGIN
|
|
struct eth_addr {
|
|
PACK_STRUCT_FIELD(u8_t addr[ETHARP_HWADDR_LEN]);
|
|
} PACK_STRUCT_STRUCT;
|
|
PACK_STRUCT_END
|
|
#ifdef PACK_STRUCT_USE_INCLUDES
|
|
# include "arch/epstruct.h"
|
|
#endif
|
|
|
|
#ifdef PACK_STRUCT_USE_INCLUDES
|
|
# include "arch/bpstruct.h"
|
|
#endif
|
|
PACK_STRUCT_BEGIN
|
|
/** Ethernet header */
|
|
struct eth_hdr {
|
|
#if ETH_PAD_SIZE
|
|
PACK_STRUCT_FIELD(u8_t padding[ETH_PAD_SIZE]);
|
|
#endif
|
|
PACK_STRUCT_FIELD(struct eth_addr dest);
|
|
PACK_STRUCT_FIELD(struct eth_addr src);
|
|
PACK_STRUCT_FIELD(u16_t type);
|
|
} PACK_STRUCT_STRUCT;
|
|
PACK_STRUCT_END
|
|
#ifdef PACK_STRUCT_USE_INCLUDES
|
|
# include "arch/epstruct.h"
|
|
#endif
|
|
|
|
#define SIZEOF_ETH_HDR (14 + ETH_PAD_SIZE)
|
|
|
|
#if ETHARP_SUPPORT_VLAN
|
|
|
|
#ifdef PACK_STRUCT_USE_INCLUDES
|
|
# include "arch/bpstruct.h"
|
|
#endif
|
|
PACK_STRUCT_BEGIN
|
|
/** VLAN header inserted between ethernet header and payload
|
|
* if 'type' in ethernet header is ETHTYPE_VLAN.
|
|
* See IEEE802.Q */
|
|
struct eth_vlan_hdr {
|
|
PACK_STRUCT_FIELD(u16_t tpid);
|
|
PACK_STRUCT_FIELD(u16_t prio_vid);
|
|
} PACK_STRUCT_STRUCT;
|
|
PACK_STRUCT_END
|
|
#ifdef PACK_STRUCT_USE_INCLUDES
|
|
# include "arch/epstruct.h"
|
|
#endif
|
|
|
|
#define SIZEOF_VLAN_HDR 4
|
|
#define VLAN_ID(vlan_hdr) (htons((vlan_hdr)->prio_vid) & 0xFFF)
|
|
|
|
#endif /* ETHARP_SUPPORT_VLAN */
|
|
|
|
#ifdef PACK_STRUCT_USE_INCLUDES
|
|
# include "arch/bpstruct.h"
|
|
#endif
|
|
PACK_STRUCT_BEGIN
|
|
/** the ARP message, see RFC 826 ("Packet format") */
|
|
struct etharp_hdr {
|
|
PACK_STRUCT_FIELD(u16_t hwtype);
|
|
PACK_STRUCT_FIELD(u16_t proto);
|
|
PACK_STRUCT_FIELD(u8_t hwlen);
|
|
PACK_STRUCT_FIELD(u8_t protolen);
|
|
PACK_STRUCT_FIELD(u16_t opcode);
|
|
PACK_STRUCT_FIELD(struct eth_addr shwaddr);
|
|
PACK_STRUCT_FIELD(struct ip_addr2 sipaddr);
|
|
PACK_STRUCT_FIELD(struct eth_addr dhwaddr);
|
|
PACK_STRUCT_FIELD(struct ip_addr2 dipaddr);
|
|
} PACK_STRUCT_STRUCT;
|
|
PACK_STRUCT_END
|
|
#ifdef PACK_STRUCT_USE_INCLUDES
|
|
# include "arch/epstruct.h"
|
|
#endif
|
|
|
|
#define SIZEOF_ETHARP_HDR 28
|
|
#define SIZEOF_ETHARP_PACKET (SIZEOF_ETH_HDR + SIZEOF_ETHARP_HDR)
|
|
|
|
/** 5 seconds period */
|
|
#define ARP_TMR_INTERVAL 5000
|
|
|
|
#define ETHTYPE_ARP 0x0806
|
|
#define ETHTYPE_IP 0x0800
|
|
#define ETHTYPE_VLAN 0x8100
|
|
#define ETHTYPE_PPPOEDISC 0x8863 /* PPP Over Ethernet Discovery Stage */
|
|
#define ETHTYPE_PPPOE 0x8864 /* PPP Over Ethernet Session Stage */
|
|
|
|
/** MEMCPY-like macro to copy to/from struct eth_addr's that are local variables
|
|
* or known to be 32-bit aligned within the protocol header. */
|
|
#ifndef ETHADDR32_COPY
|
|
#define ETHADDR32_COPY(src, dst) SMEMCPY(src, dst, ETHARP_HWADDR_LEN)
|
|
#endif
|
|
|
|
/** MEMCPY-like macro to copy to/from struct eth_addr's that are no local
|
|
* variables and known to be 16-bit aligned within the protocol header. */
|
|
#ifndef ETHADDR16_COPY
|
|
#define ETHADDR16_COPY(src, dst) SMEMCPY(src, dst, ETHARP_HWADDR_LEN)
|
|
#endif
|
|
|
|
#if LWIP_ARP /* don't build if not configured for use in lwipopts.h */
|
|
|
|
/** ARP message types (opcodes) */
|
|
#define ARP_REQUEST 1
|
|
#define ARP_REPLY 2
|
|
|
|
/** Define this to 1 and define LWIP_ARP_FILTER_NETIF_FN(pbuf, netif, type)
|
|
* to a filter function that returns the correct netif when using multiple
|
|
* netifs on one hardware interface where the netif's low-level receive
|
|
* routine cannot decide for the correct netif (e.g. when mapping multiple
|
|
* IP addresses to one hardware interface).
|
|
*/
|
|
#ifndef LWIP_ARP_FILTER_NETIF
|
|
#define LWIP_ARP_FILTER_NETIF 0
|
|
#endif
|
|
|
|
#if ARP_QUEUEING
|
|
/** struct for queueing outgoing packets for unknown address
|
|
* defined here to be accessed by memp.h
|
|
*/
|
|
struct etharp_q_entry {
|
|
struct etharp_q_entry *next;
|
|
struct pbuf *p;
|
|
};
|
|
#endif /* ARP_QUEUEING */
|
|
|
|
#define etharp_init() /* Compatibility define, not init needed. */
|
|
void etharp_tmr(void);
|
|
s8_t etharp_find_addr(struct netif *netif, ip_addr_t *ipaddr,
|
|
struct eth_addr **eth_ret, ip_addr_t **ip_ret);
|
|
err_t etharp_output(struct netif *netif, struct pbuf *q, ip_addr_t *ipaddr);
|
|
err_t etharp_query(struct netif *netif, ip_addr_t *ipaddr, struct pbuf *q);
|
|
err_t etharp_request(struct netif *netif, ip_addr_t *ipaddr);
|
|
/** For Ethernet network interfaces, we might want to send "gratuitous ARP";
|
|
* this is an ARP packet sent by a node in order to spontaneously cause other
|
|
* nodes to update an entry in their ARP cache.
|
|
* From RFC 3220 "IP Mobility Support for IPv4" section 4.6. */
|
|
#define etharp_gratuitous(netif) etharp_request((netif), &(netif)->ip_addr)
|
|
|
|
#if ETHARP_SUPPORT_STATIC_ENTRIES
|
|
err_t etharp_add_static_entry(ip_addr_t *ipaddr, struct eth_addr *ethaddr);
|
|
err_t etharp_remove_static_entry(ip_addr_t *ipaddr);
|
|
#endif /* ETHARP_SUPPORT_STATIC_ENTRIES */
|
|
|
|
#if LWIP_AUTOIP
|
|
err_t etharp_raw(struct netif *netif, const struct eth_addr *ethsrc_addr,
|
|
const struct eth_addr *ethdst_addr,
|
|
const struct eth_addr *hwsrc_addr, const ip_addr_t *ipsrc_addr,
|
|
const struct eth_addr *hwdst_addr, const ip_addr_t *ipdst_addr,
|
|
const u16_t opcode);
|
|
#endif /* LWIP_AUTOIP */
|
|
|
|
#endif /* LWIP_ARP */
|
|
|
|
err_t ethernet_input(struct pbuf *p, struct netif *netif);
|
|
|
|
#define eth_addr_cmp(addr1, addr2) (memcmp((addr1)->addr, (addr2)->addr, ETHARP_HWADDR_LEN) == 0)
|
|
|
|
extern const struct eth_addr ethbroadcast, ethzero;
|
|
|
|
#endif /* LWIP_ARP || LWIP_ETHERNET */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __NETIF_ARP_H__ */
|