mirror of
https://github.com/torvalds/linux.git
synced 2024-10-28 07:41:44 +00:00
9899694a7f
This function was declared in libbpf.c and was the only remaining function in this library, but has nothing to do with BPF. Shift it out into a new header, sock_example.h, and include it from the relevant samples. Signed-off-by: Joe Stringer <joe@ovn.org> Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/20161209024620.31660-8-joe@ovn.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
36 lines
793 B
C
36 lines
793 B
C
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <linux/unistd.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <net/ethernet.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;
|
|
}
|