[mirror_ubuntu-artful-kernel.git] / samples / bpf / sock_example.h

#include <stdlib.h>
#include <stdio.h>
#include <linux/unistd.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <linux/if_ether.h>
#include <net/if.h>
#include <linux/if_packet.h>
#include <arpa/inet.h>
#include "libbpf.h"

static inline int open_raw_sock(const char *name)
{
	struct sockaddr_ll sll;
	int sock;

	sock = socket(PF_PACKET, SOCK_RAW | SOCK_NONBLOCK | SOCK_CLOEXEC, htons(ETH_P_ALL));
	if (sock < 0) {
		printf("cannot create raw socket\n");
		return -1;
	}

	memset(&sll, 0, sizeof(sll));
	sll.sll_family = AF_PACKET;
	sll.sll_ifindex = if_nametoindex(name);
	sll.sll_protocol = htons(ETH_P_ALL);
	if (bind(sock, (struct sockaddr *)&sll, sizeof(sll)) < 0) {
		printf("bind to %s: %s\n", name, strerror(errno));
		close(sock);
		return -1;
	}

	return sock;
}
Commit	Line	Data
3c731eba AS	1	#include <stdlib.h>
	2	#include <stdio.h>
	3	#include <linux/unistd.h>
	4	#include <unistd.h>
	5	#include <string.h>
3c731eba	6	#include <errno.h>
ee12996c	7	#include <linux/if_ether.h>
03f4723e AS	8	#include <net/if.h>
	9	#include <linux/if_packet.h>
	10	#include <arpa/inet.h>
3c731eba AS	11	#include "libbpf.h"
3c731eba AS	12
9899694a	13	static inline int open_raw_sock(const char *name)
03f4723e AS	14	{
	15	struct sockaddr_ll sll;
	16	int sock;
	17
	18	sock = socket(PF_PACKET, SOCK_RAW \| SOCK_NONBLOCK \| SOCK_CLOEXEC, htons(ETH_P_ALL));
	19	if (sock < 0) {
	20	printf("cannot create raw socket\n");
	21	return -1;
	22	}
	23
	24	memset(&sll, 0, sizeof(sll));
	25	sll.sll_family = AF_PACKET;
	26	sll.sll_ifindex = if_nametoindex(name);
	27	sll.sll_protocol = htons(ETH_P_ALL);
	28	if (bind(sock, (struct sockaddr *)&sll, sizeof(sll)) < 0) {
	29	printf("bind to %s: %s\n", name, strerror(errno));
	30	close(sock);
	31	return -1;
	32	}
	33
	34	return sock;
	35	}