Michael Sauer
1b0501179d
Docker-Build mit gcc-arm-none-eabi 4.9-2014q4 (statt Homebrew-Cask) verwendet, Dockerfile/tools/docker.sh dafür aus Task 13 vorgezogen. cmake/sdk.cmake schont gcc 4.9 (kennt -fcommon/-Wno-error=... nicht). Zwei zusätzliche SDK-Stubs (EarlyInit, pre_gpio_config) in src/sys/sdk_stubs.c ergänzt, siehe sdk/PATCHES.md.
129 lines
4.7 KiB
C
129 lines
4.7 KiB
C
/**
|
|
* @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"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#if LWIP_IPV4 && LWIP_ARP /* don't build if not configured for use in lwipopts.h */
|
|
|
|
#include "lwip/prot/etharp.h"
|
|
|
|
/** 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);
|
|
s8_t etharp_find_addr(struct netif *netif, const ip4_addr_t *ipaddr,
|
|
struct eth_addr **eth_ret, const ip4_addr_t **ip_ret);
|
|
u8_t etharp_get_entry(u8_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);
|
|
|
|
/**
|
|
* Update (or insert) a IP/MAC address pair in the ARP cache.
|
|
*
|
|
* If a pending entry is resolved, any queued packets will be sent
|
|
* at this point.
|
|
*
|
|
* @param netif netif related to this entry (used for NETIF_ADDRHINT)
|
|
* @param ipaddr IP address of the inserted ARP entry.
|
|
* @param ethaddr Ethernet address of the inserted ARP entry.
|
|
* @param flags See @ref etharp_state
|
|
*
|
|
* @return
|
|
* - ERR_OK Successfully updated ARP cache.
|
|
* - ERR_MEM If we could not add a new ARP entry when ETHARP_FLAG_TRY_HARD was set.
|
|
* - ERR_ARG Non-unicast address given, those will not appear in ARP cache.
|
|
*
|
|
* @see pbuf_free()
|
|
*/
|
|
err_t
|
|
etharp_update_arp_entry(struct netif *netif, const ip4_addr_t *ipaddr, struct eth_addr *ethaddr, u8_t flags);
|
|
|
|
|
|
#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 */
|
|
|
|
#endif /* LWIP_IPV4 && LWIP_ARP */
|
|
|
|
void etharp_input(struct pbuf *p, struct netif *netif);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* LWIP_ARP || LWIP_ETHERNET */
|
|
|
|
#endif /* LWIP_HDR_NETIF_ETHARP_H */
|