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| #include <stdio.h>
| #include <assert.h>
| #include <linux/bpf.h>
| #include "libbpf.h"
| #include "bpf_load.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_lookup_elem(map_fd[0], &key, &tcp_cnt) == 0);
|
| key = IPPROTO_UDP;
| assert(bpf_lookup_elem(map_fd[0], &key, &udp_cnt) == 0);
|
| key = IPPROTO_ICMP;
| assert(bpf_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;
| }
|
|
