94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
/* net_driver_loopback.c - Loopback driver */
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/*
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* Copyright (c) 2015 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <nanokernel.h>
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#include <toolchain.h>
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#include <string.h>
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#include <errno.h>
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#if defined(CONFIG_STDOUT_CONSOLE)
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#include <stdio.h>
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#define PRINT printf
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#else
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#include <misc/printk.h>
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#define PRINT printk
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#endif
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#include "contiki/ip/uip-debug.h"
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#include <net/net_core.h>
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#include <net/buf.h>
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#include <net/net_ip.h>
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#include <net/net_socket.h>
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/* The following uIP includes are for testing purposes only. Never
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* ever use them in your application.
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*/
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#include "contiki/ipv6/uip-ds6-route.h" /* to set the route */
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#include "contiki/ipv6/uip-ds6-nbr.h" /* to set the neighbor cache */
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static int net_driver_loopback_open(void)
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{
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const struct in6_addr in6addr_loopback = IN6ADDR_LOOPBACK_INIT;
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uint8_t eui64[8] = { };
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net_set_mac(eui64, sizeof(eui64));
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if (!uip_ds6_addr_add((uip_ipaddr_t *)&in6addr_loopback, 0,
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ADDR_MANUAL))
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return -EINVAL;
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if (!uip_ds6_nbr_add((uip_ipaddr_t *)&in6addr_loopback,
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&uip_lladdr, 0, NBR_REACHABLE)) {
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NET_DBG("Cannot add neighbor cache\n");
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return -EINVAL;
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}
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if (!uip_ds6_route_add((uip_ipaddr_t *)&in6addr_loopback, 128,
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(uip_ipaddr_t *)&in6addr_loopback)) {
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NET_DBG("Cannot add localhost route\n");
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return -EINVAL;
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}
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NET_DBG("initialized loopback driver\n");
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return 0;
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}
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static int net_driver_loopback_send(struct net_buf *buf)
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{
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NET_DBG("received %d bytes\n", buf->len);
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net_recv(buf);
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return 1;
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}
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static struct net_driver net_driver_loopback = {
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.head_reserve = 0,
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.open = net_driver_loopback_open,
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.send = net_driver_loopback_send,
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};
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int net_driver_loopback_init(void)
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{
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net_register_driver(&net_driver_loopback);
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return 0;
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}
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