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