nes-proj/platform/galileo/net/eth-proc.c

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/*
* Copyright (C) 2015, Intel Corporation. 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. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``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
* COPYRIGHT HOLDER OR CONTRIBUTORS 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.
*/
#include <stdio.h>
#include "contiki-net.h"
#include "net/ipv4/uip-neighbor.h"
#include "net/eth-proc.h"
#include "eth.h"
#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
#define IPBUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
PROCESS(eth_process, "Ethernet");
/*---------------------------------------------------------------------------*/
#if NETSTACK_CONF_WITH_IPV6
static uint8_t
output(const uip_lladdr_t *dest_mac)
{
if (dest_mac == NULL) {
/* broadcast packet */
memset(&BUF->dest, 0xFF, UIP_LLH_LEN);
} else {
memcpy(&BUF->dest, dest_mac, UIP_LLH_LEN);
}
memcpy(&BUF->src, uip_lladdr.addr, UIP_LLH_LEN);
quarkX1000_eth_send();
return 0;
}
#else
static uint8_t
output(void)
{
uip_arp_out();
quarkX1000_eth_send();
return 0;
}
#endif /* NETSTACK_CONF_WITH_IPV6 */
/*---------------------------------------------------------------------------*/
static void
pollhandler(void)
{
process_poll(&eth_process);
quarkX1000_eth_poll(&uip_len);
if(uip_len > 0) {
#if NETSTACK_CONF_WITH_IPV6
if(BUF->type == uip_htons(UIP_ETHTYPE_IPV6)) {
tcpip_input();
}
#else
if(BUF->type == uip_htons(UIP_ETHTYPE_IP)) {
uip_len -= sizeof(struct uip_eth_hdr);
tcpip_input();
} else if(BUF->type == uip_htons(UIP_ETHTYPE_ARP)) {
uip_arp_arpin();
/* If the above function invocation resulted in data that
should be sent out on the network, the global variable
uip_len is set to a value > 0. */
if(uip_len > 0) {
quarkX1000_eth_send();
}
}
#endif /* NETSTACK_CONF_WITH_IPV6 */
}
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(eth_process, ev, data)
{
PROCESS_POLLHANDLER(pollhandler());
PROCESS_BEGIN();
tcpip_set_outputfunc(output);
process_poll(&eth_process);
PROCESS_WAIT_UNTIL(ev == PROCESS_EVENT_EXIT);
PROCESS_END();
}
/*---------------------------------------------------------------------------*/