linux-stable/samples/bpf/sockex1_user.c
Daniel T. Lee 4d18f6de6a samples: bpf: refactor header include path
Currently, header inclusion in each file is inconsistent.
For example, "libbpf.h" header is included as multiple ways.

    #include "bpf/libbpf.h"
    #include "libbpf.h"

Due to commit b552d33c80 ("samples/bpf: fix include path
in Makefile"), $(srctree)/tools/lib/bpf/ path had been included
during build, path "bpf/" in header isn't necessary anymore.

This commit removes path "bpf/" in header inclusion.

Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-06-18 00:28:36 +02:00

54 lines
1.1 KiB
C

// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <assert.h>
#include <linux/bpf.h>
#include <bpf/bpf.h>
#include "libbpf.h"
#include "sock_example.h"
#include <unistd.h>
#include <arpa/inet.h>
int main(int ac, char **argv)
{
struct bpf_object *obj;
int map_fd, prog_fd;
char filename[256];
int i, sock;
FILE *f;
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
if (bpf_prog_load(filename, BPF_PROG_TYPE_SOCKET_FILTER,
&obj, &prog_fd))
return 1;
map_fd = bpf_object__find_map_fd_by_name(obj, "my_map");
sock = open_raw_sock("lo");
assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd,
sizeof(prog_fd)) == 0);
f = popen("ping -4 -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, &key, &tcp_cnt) == 0);
key = IPPROTO_UDP;
assert(bpf_map_lookup_elem(map_fd, &key, &udp_cnt) == 0);
key = IPPROTO_ICMP;
assert(bpf_map_lookup_elem(map_fd, &key, &icmp_cnt) == 0);
printf("TCP %lld UDP %lld ICMP %lld bytes\n",
tcp_cnt, udp_cnt, icmp_cnt);
sleep(1);
}
return 0;
}