72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
/* net_driver_slip.c - Slip (serial line IP) 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 <net/net_core.h>
|
|
#include <net/ip_buf.h>
|
|
|
|
#include "contiki/os/dev/slip.h"
|
|
|
|
static int net_driver_slip_open(void)
|
|
{
|
|
NET_DBG("Initialized slip driver\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int net_driver_slip_send(struct net_buf *buf)
|
|
{
|
|
NET_DBG("Sending %d bytes, application data %d bytes\n",
|
|
ip_buf_len(buf), ip_buf_appdatalen(buf));
|
|
|
|
if (!slip_send(buf)) {
|
|
/* Release the buffer because we sent all the data
|
|
* successfully.
|
|
*/
|
|
ip_buf_unref(buf);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct net_driver net_driver_slip = {
|
|
.head_reserve = 0,
|
|
.open = net_driver_slip_open,
|
|
.send = net_driver_slip_send,
|
|
};
|
|
|
|
int net_driver_slip_init(void)
|
|
{
|
|
net_register_driver(&net_driver_slip);
|
|
|
|
return 0;
|
|
}
|