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/*
* IEEE 802.15.4 socket example
*
* Copyright (C) 2016 Samsung Electronics Co., Ltd.
*
* Author: Stefan Schmidt <stefan@osg.samsung.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* gcc af_packet_rx.c -o af_packet_rx */
#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <net/if.h>
#include <linux/if_packet.h>
#include <arpa/inet.h>
#include <sys/ioctl.h>
#define IEEE802154_ADDR_LEN 8
#define MAX_PACKET_LEN 127
#ifndef ETH_P_IEEE802154
#define ETH_P_IEEE802154 0x00F6
#endif
int main(int argc, char *argv[]) {
int ret, sd, i;
ssize_t len;
unsigned char buf[MAX_PACKET_LEN + 1];
struct sockaddr_ll sll;
struct ifreq ifr;
/* Create AF_PACKET address family socket for the SOCK_RAW type */
sd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_IEEE802154));
if (sd < 0) {
perror("socket");
return 1;
}
/* Get interface index */
strncpy(ifr.ifr_name, "monitor0", IFNAMSIZ);
ret = ioctl(sd, SIOCGIFINDEX, &ifr);
if (ret < 0) {
perror("ioctl");
close(sd);
return 1;
}
/* Prepare source socket address struct */
memset(&sll, 0, sizeof(sll));
sll.sll_family = AF_PACKET;
sll.sll_ifindex = ifr.ifr_ifindex;
sll.sll_protocol = htons(ETH_P_IEEE802154);
/* Bind socket on this side */
ret = bind(sd, (struct sockaddr *)&sll, sizeof(sll));
if (ret < 0) {
perror("bind");
close(sd);
return 1;
}
while (1) {
/* Receive and print the whole packet payload, including FCS */
len = recv(sd, buf, MAX_PACKET_LEN, 0);
if (len < 0) {
perror("recv");
continue;
}
printf("Received:");
for (i = 0; i < len; i++)
printf(" %x", buf[i]);
printf("\n");
}
shutdown(sd, SHUT_RDWR);
close(sd);
return 0;
}
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