LwIP
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Outline
#define LWIP_HDR_NETIF_ETHARP_H
#include "lwip/opt.h"
#include "lwip/pbuf.h"
#include "lwip/ip4_addr.h"
#include "lwip/netif.h"
#include "lwip/ip4.h"
#include "lwip/prot/ethernet.h"
#include "lwip/prot/etharp.h"
#define ARP_TMR_INTERVAL
#define etharp_init
etharp_tmr();
etharp_find_addr(struct netif *, const ip4_addr_t *, struct eth_addr **, const ip4_addr_t **);
etharp_get_entry(size_t, ip4_addr_t **, struct netif **, struct eth_addr **);
etharp_output(struct netif *, struct pbuf *, const ip4_addr_t *);
etharp_query(struct netif *, const ip4_addr_t *, struct pbuf *);
etharp_request(struct netif *, const ip4_addr_t *);
#define etharp_gratuitous
etharp_cleanup_netif(struct netif *);
etharp_input(struct pbuf *, struct netif *);
Files
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SourceVuSTM32 Libraries and SamplesLwIPsrc/include/lwip/etharp.h
 
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/** * @file * Ethernet output function - handles OUTGOING ethernet level traffic, implements * ARP resolving. * To be used in most low-level netif implementations *//* ... */ /* * 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 LWIP_HDR_NETIF_ETHARP_H #define LWIP_HDR_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/ip4_addr.h" #include "lwip/netif.h" #include "lwip/ip4.h" #include "lwip/prot/ethernet.h" 5 includes #if LWIP_IPV4 && LWIP_ARP /* don't build if not configured for use in lwipopts.h */ #include "lwip/prot/etharp.h" #ifdef __cplusplus extern "C" { #endif /** 1 seconds period */ #define ARP_TMR_INTERVAL 1000 #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, no init needed. */ void etharp_tmr(void); ssize_t etharp_find_addr(struct netif *netif, const ip4_addr_t *ipaddr, struct eth_addr **eth_ret, const ip4_addr_t **ip_ret); int etharp_get_entry(size_t i, ip4_addr_t **ipaddr, struct netif **netif, struct eth_addr **eth_ret); err_t etharp_output(struct netif *netif, struct pbuf *q, const ip4_addr_t *ipaddr); err_t etharp_query(struct netif *netif, const ip4_addr_t *ipaddr, struct pbuf *q); err_t etharp_request(struct netif *netif, const ip4_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_ip4_addr(netif)) void etharp_cleanup_netif(struct netif *netif); #if ETHARP_SUPPORT_STATIC_ENTRIES err_t etharp_add_static_entry(const ip4_addr_t *ipaddr, struct eth_addr *ethaddr); err_t etharp_remove_static_entry(const ip4_addr_t *ipaddr);/* ... */ #endif /* ETHARP_SUPPORT_STATIC_ENTRIES */ void etharp_input(struct pbuf *p, struct netif *netif); #ifdef __cplusplus }extern "C" { ... } #endif /* ... */ #endif /* LWIP_IPV4 && LWIP_ARP *//* ... */ #endif /* LWIP_ARP || LWIP_ETHERNET */ /* ... */ #endif /* LWIP_HDR_NETIF_ETHARP_H */
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