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Note: File does not exist in v4.6.
 1/* SPDX-License-Identifier: GPL-2.0 */
 2#include <stdlib.h>
 3#include <stdio.h>
 4#include <linux/unistd.h>
 5#include <unistd.h>
 6#include <string.h>
 7#include <errno.h>
 8#include <linux/if_ether.h>
 9#include <net/if.h>
10#include <linux/if_packet.h>
11#include <arpa/inet.h>
12#include "libbpf.h"
13
14static inline int open_raw_sock(const char *name)
15{
16	struct sockaddr_ll sll;
17	int sock;
18
19	sock = socket(PF_PACKET, SOCK_RAW | SOCK_NONBLOCK | SOCK_CLOEXEC, htons(ETH_P_ALL));
20	if (sock < 0) {
21		printf("cannot create raw socket\n");
22		return -1;
23	}
24
25	memset(&sll, 0, sizeof(sll));
26	sll.sll_family = AF_PACKET;
27	sll.sll_ifindex = if_nametoindex(name);
28	sll.sll_protocol = htons(ETH_P_ALL);
29	if (bind(sock, (struct sockaddr *)&sll, sizeof(sll)) < 0) {
30		printf("bind to %s: %s\n", name, strerror(errno));
31		close(sock);
32		return -1;
33	}
34
35	return sock;
36}