127 lines
4.2 KiB
C
127 lines
4.2 KiB
C
/*
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* Copyright (c) 2012, Thingsquare, http://www.thingsquare.com/.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "net/ip/uip.h"
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#include "net/ipv6/uip-ds6.h"
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#include "dev/slip.h"
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#include "ip64.h"
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#include "ip64-arp.h"
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#include "ip64-eth-interface.h"
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#include <string.h>
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#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
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#define DEBUG DEBUG_NONE
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#include "net/ip/uip-debug.h"
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#define printf(...)
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/*---------------------------------------------------------------------------*/
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void
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ip64_eth_interface_input(uint8_t *packet, uint16_t len)
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{
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struct ip64_eth_hdr *ethhdr;
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ethhdr = (struct ip64_eth_hdr *)packet;
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if(ethhdr->type == UIP_HTONS(IP64_ETH_TYPE_ARP)) {
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len = ip64_arp_arp_input(packet, len);
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if(len > 0) {
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IP64_ETH_DRIVER.output(packet, len);
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}
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} else if(ethhdr->type == UIP_HTONS(IP64_ETH_TYPE_IP) &&
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len > sizeof(struct ip64_eth_hdr)) {
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printf("-------------->\n");
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uip_len = ip64_4to6(&packet[sizeof(struct ip64_eth_hdr)],
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len - sizeof(struct ip64_eth_hdr),
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&uip_buf[UIP_LLH_LEN]);
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if(uip_len > 0) {
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printf("ip64_interface_process: converted %d bytes\n", uip_len);
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printf("ip64-interface: input source ");
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PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
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PRINTF(" destination ");
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PRINT6ADDR(&UIP_IP_BUF->destipaddr);
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PRINTF("\n");
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tcpip_input();
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printf("Done\n");
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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static void
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init(void)
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{
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printf("ip64-eth-interface: init\n");
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}
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/*---------------------------------------------------------------------------*/
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static int
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output(void)
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{
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int len, ret;
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printf("ip64-interface: output source ");
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PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
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PRINTF(" destination ");
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PRINT6ADDR(&UIP_IP_BUF->destipaddr);
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PRINTF("\n");
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printf("<--------------\n");
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len = ip64_6to4(&uip_buf[UIP_LLH_LEN], uip_len,
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&ip64_packet_buffer[sizeof(struct ip64_eth_hdr)]);
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printf("ip64-interface: output len %d\n", len);
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if(len > 0) {
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if(ip64_arp_check_cache(&ip64_packet_buffer[sizeof(struct ip64_eth_hdr)])) {
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printf("Create header\n");
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ret = ip64_arp_create_ethhdr(ip64_packet_buffer,
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&ip64_packet_buffer[sizeof(struct ip64_eth_hdr)]);
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if(ret > 0) {
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len += ret;
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IP64_ETH_DRIVER.output(ip64_packet_buffer, len);
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}
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} else {
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printf("Create request\n");
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len = ip64_arp_create_arp_request(ip64_packet_buffer,
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&ip64_packet_buffer[sizeof(struct ip64_eth_hdr)]);
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return IP64_ETH_DRIVER.output(ip64_packet_buffer, len);
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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const struct uip_fallback_interface ip64_eth_interface = {
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init,
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output
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};
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/*---------------------------------------------------------------------------*/
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