6 #include "sock_example.h"
9 #include <sys/resource.h>
12 #define PARSE_IP_PROG_FD (prog_fd[0])
13 #define PROG_ARRAY_FD (map_fd[0])
15 struct bpf_flow_keys {
30 int main(int argc, char **argv)
32 struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
35 int i, sock, err, id, key = PARSE_IP;
36 struct bpf_prog_info info = {};
37 uint32_t info_len = sizeof(info);
39 snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
40 setrlimit(RLIMIT_MEMLOCK, &r);
42 if (load_bpf_file(filename)) {
43 printf("%s", bpf_log_buf);
47 /* Test fd array lookup which returns the id of the bpf_prog */
48 err = bpf_obj_get_info_by_fd(PARSE_IP_PROG_FD, &info, &info_len);
50 err = bpf_map_lookup_elem(PROG_ARRAY_FD, &key, &id);
52 assert(id == info.id);
54 sock = open_raw_sock("lo");
56 assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd[4],
60 f = popen("ping -c5 localhost", "r");
62 f = popen("netperf -l 4 localhost", "r");
65 for (i = 0; i < 5; i++) {
66 struct bpf_flow_keys key = {}, next_key;
70 printf("IP src.port -> dst.port bytes packets\n");
71 while (bpf_map_get_next_key(map_fd[2], &key, &next_key) == 0) {
72 bpf_map_lookup_elem(map_fd[2], &next_key, &value);
73 printf("%s.%05d -> %s.%05d %12lld %12lld\n",
74 inet_ntoa((struct in_addr){htonl(next_key.src)}),
76 inet_ntoa((struct in_addr){htonl(next_key.dst)}),
78 value.bytes, value.packets);