mirror of
https://github.com/oliverschmidt/contiki.git
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211 lines
4.6 KiB
C
211 lines
4.6 KiB
C
/*
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* Copyright (c) 2013, Google
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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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*
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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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*
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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 Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR 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, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Author: Vladimir Pouzanov <farcaller@gmail.com>
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*
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*/
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#include "contiki.h"
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#include "contiki-conf.h"
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#if defined(linux) && NETSTACK_CONF_WITH_IPV6
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#include "linuxradio-drv.h"
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#include "net/packetbuf.h"
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#include "net/netstack.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/ioctl.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <unistd.h>
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#include <netinet/if_ether.h>
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#include <netpacket/packet.h>
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#include <net/if.h>
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#include <linux/sockios.h>
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#define DEBUG 0
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#if DEBUG
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#include <stdio.h>
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#define PRINTF(...) printf(__VA_ARGS__)
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#else
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#define PRINTF(...)
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#endif
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static int sockfd = -1;
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static char *sockbuf;
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static int buflen;
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#define MAX_PACKET_SIZE 256
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static int
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init(void)
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{
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sockbuf = malloc(MAX_PACKET_SIZE);
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if(sockbuf == 0) {
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return 1;
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}
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return 0;
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}
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static int
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prepare(const void *payload, unsigned short payload_len)
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{
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if(payload_len > MAX_PACKET_SIZE) {
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return 0;
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}
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memcpy(sockbuf, payload, payload_len);
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buflen = payload_len;
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return 0;
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}
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static int
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transmit(unsigned short transmit_len)
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{
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int sent = 0;
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sent = send(sockfd, sockbuf, buflen, 0);
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if(sent < 0) {
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perror("linuxradio send()");
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return RADIO_TX_ERR;
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}
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buflen = 0;
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return RADIO_TX_OK;
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}
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static int
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my_send(const void *payload, unsigned short payload_len)
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{
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int ret = -1;
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if(prepare(payload, payload_len)) {
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return ret;
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}
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ret = transmit(payload_len);
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return ret;
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}
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static int
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my_read(void *buf, unsigned short buf_len)
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{
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return 0;
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}
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static int
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channel_clear(void)
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{
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return 1;
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}
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static int
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receiving_packet(void)
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{
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return 0;
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}
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static int
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pending_packet(void)
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{
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return 0;
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}
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static int
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set_fd(fd_set *rset, fd_set *wset)
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{
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FD_SET(sockfd, rset);
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return 1;
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}
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static void
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handle_fd(fd_set *rset, fd_set *wset)
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{
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if(FD_ISSET(sockfd, rset)) {
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int bytes = read(sockfd, sockbuf, MAX_PACKET_SIZE);
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buflen = bytes;
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memcpy(packetbuf_dataptr(), sockbuf, bytes);
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packetbuf_set_datalen(bytes);
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NETSTACK_RDC.input();
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}
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}
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static const struct select_callback linuxradio_sock_callback = { set_fd, handle_fd };
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static int
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on(void)
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{
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struct ifreq ifr;
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int err;
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struct sockaddr_ll sll;
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sockfd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_IEEE802154));
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if(sockfd < 0) {
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perror("linuxradio socket()");
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return 0;
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} else {
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strncpy((char *)ifr.ifr_name, NETSTACK_CONF_LINUXRADIO_DEV, IFNAMSIZ);
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err = ioctl(sockfd, SIOCGIFINDEX, &ifr);
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if(err == -1) {
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perror("linuxradio ioctl()");
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return 0;
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}
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sll.sll_family = AF_PACKET;
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sll.sll_ifindex = ifr.ifr_ifindex;
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sll.sll_protocol = htons(ETH_P_IEEE802154);
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if(bind(sockfd, (struct sockaddr *)&sll, sizeof(sll)) < 0) {
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perror("linuxradio bind()");
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return 0;
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}
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select_set_callback(sockfd, &linuxradio_sock_callback);
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return 1;
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}
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}
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static int
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off(void)
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{
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close(sockfd);
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sockfd = -1;
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return 1;
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}
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const struct radio_driver linuxradio_driver =
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{
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init,
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prepare,
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transmit,
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my_send,
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my_read,
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channel_clear,
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receiving_packet,
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pending_packet,
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on,
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off,
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};
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#endif
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