| /** |
| * @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" |
| |
| #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 |
| } |
| #endif |
| |
| #endif /* LWIP_IPV4 && LWIP_ARP */ |
| #endif /* LWIP_ARP || LWIP_ETHERNET */ |
| |
| #endif /* LWIP_HDR_NETIF_ETHARP_H */ |