85 lines
3.5 KiB
C
85 lines
3.5 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2001-2003, Adam Dunkels.
|
||
|
|
* 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 uIP TCP/IP stack.
|
||
|
|
*
|
||
|
|
* $Id: uip_arp.h,v 1.2 2006/08/26 23:58:45 oliverschmidt Exp $
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef IP64_ARP_H
|
||
|
|
#define IP64_ARP_H
|
||
|
|
|
||
|
|
#include "net/ip/uip.h"
|
||
|
|
|
||
|
|
#include "ip64-eth.h"
|
||
|
|
|
||
|
|
|
||
|
|
/* The uip_arp_init() function must be called before any of the other
|
||
|
|
ARP functions. */
|
||
|
|
void ip64_arp_init(void);
|
||
|
|
|
||
|
|
/* The uip_arp_ipin() function should be called whenever an IP packet
|
||
|
|
arrives from the Ethernet. This function refreshes the ARP table or
|
||
|
|
inserts a new mapping if none exists. The function assumes that an
|
||
|
|
IP packet with an Ethernet header is present in the uip_buf buffer
|
||
|
|
and that the length of the packet is in the uip_len variable. */
|
||
|
|
void ip64_arp_ip_input(const uint8_t *packet, uint16_t packet_len);
|
||
|
|
|
||
|
|
/* The uip_arp_arpin() should be called when an ARP packet is received
|
||
|
|
by the Ethernet driver. This function also assumes that the
|
||
|
|
Ethernet frame is present in the uip_buf buffer. When the
|
||
|
|
uip_arp_arpin() function returns, the contents of the uip_buf
|
||
|
|
buffer should be sent out on the Ethernet if the uip_len variable
|
||
|
|
is > 0. */
|
||
|
|
uint16_t ip64_arp_arp_input(const uint8_t *packet, uint16_t packet_len);
|
||
|
|
|
||
|
|
/* The uip_arp_out() function should be called when an IP packet
|
||
|
|
should be sent out on the Ethernet. This function creates an
|
||
|
|
Ethernet header before the IP header in the uip_buf buffer. The
|
||
|
|
Ethernet header will have the correct Ethernet MAC destination
|
||
|
|
address filled in if an ARP table entry for the destination IP
|
||
|
|
address (or the IP address of the default router) is present. If no
|
||
|
|
such table entry is found, the IP packet is overwritten with an ARP
|
||
|
|
request and we rely on TCP to retransmit the packet that was
|
||
|
|
overwritten. In any case, the uip_len variable holds the length of
|
||
|
|
the Ethernet frame that should be transmitted. */
|
||
|
|
void ip64_arp_ip_output(uint8_t *packet, uint16_t packet_len);
|
||
|
|
|
||
|
|
|
||
|
|
int ip64_arp_create_ethhdr(uint8_t *link_header,
|
||
|
|
const uint8_t *network_header);
|
||
|
|
|
||
|
|
int ip64_arp_create_arp_request(uint8_t *link_header,
|
||
|
|
const uint8_t *network_header);
|
||
|
|
|
||
|
|
int ip64_arp_check_cache(const uint8_t *nlhdr);
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* IP64_ARP_H */
|