linux/samples/bpf/sockex1_user.c
Joe Stringer 9899694a7f samples/bpf: Move open_raw_sock to separate header
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>
2016-12-20 12:00:40 -03:00

51 lines
1017 B
C

#include <stdio.h>
#include <assert.h>
#include <linux/bpf.h>
#include "libbpf.h"
#include "bpf_load.h"
#include "sock_example.h"
#include <unistd.h>
#include <arpa/inet.h>
int main(int ac, char **argv)
{
char filename[256];
FILE *f;
int i, sock;
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
if (load_bpf_file(filename)) {
printf("%s", bpf_log_buf);
return 1;
}
sock = open_raw_sock("lo");
assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, prog_fd,
sizeof(prog_fd[0])) == 0);
f = popen("ping -c5 localhost", "r");
(void) f;
for (i = 0; i < 5; i++) {
long long tcp_cnt, udp_cnt, icmp_cnt;
int key;
key = IPPROTO_TCP;
assert(bpf_map_lookup_elem(map_fd[0], &key, &tcp_cnt) == 0);
key = IPPROTO_UDP;
assert(bpf_map_lookup_elem(map_fd[0], &key, &udp_cnt) == 0);
key = IPPROTO_ICMP;
assert(bpf_map_lookup_elem(map_fd[0], &key, &icmp_cnt) == 0);
printf("TCP %lld UDP %lld ICMP %lld bytes\n",
tcp_cnt, udp_cnt, icmp_cnt);
sleep(1);
}
return 0;
}