1530b2c86SAlexei Starovoitov #include <stdio.h> 2530b2c86SAlexei Starovoitov #include <assert.h> 3530b2c86SAlexei Starovoitov #include <linux/bpf.h> 4530b2c86SAlexei Starovoitov #include "libbpf.h" 5530b2c86SAlexei Starovoitov #include "bpf_load.h" 69899694aSJoe Stringer #include "sock_example.h" 7530b2c86SAlexei Starovoitov #include <unistd.h> 8530b2c86SAlexei Starovoitov #include <arpa/inet.h> 9eb88d585SWilliam Tu #include <sys/resource.h> 10530b2c86SAlexei Starovoitov 11*a8744f25SMartin KaFai Lau #define PARSE_IP 3 12*a8744f25SMartin KaFai Lau #define PARSE_IP_PROG_FD (prog_fd[0]) 13*a8744f25SMartin KaFai Lau #define PROG_ARRAY_FD (map_fd[0]) 14*a8744f25SMartin KaFai Lau 152b064fffSNaveen N. Rao struct bpf_flow_keys { 16530b2c86SAlexei Starovoitov __be32 src; 17530b2c86SAlexei Starovoitov __be32 dst; 18530b2c86SAlexei Starovoitov union { 19530b2c86SAlexei Starovoitov __be32 ports; 20530b2c86SAlexei Starovoitov __be16 port16[2]; 21530b2c86SAlexei Starovoitov }; 22530b2c86SAlexei Starovoitov __u32 ip_proto; 23530b2c86SAlexei Starovoitov }; 24530b2c86SAlexei Starovoitov 25530b2c86SAlexei Starovoitov struct pair { 26530b2c86SAlexei Starovoitov __u64 packets; 27530b2c86SAlexei Starovoitov __u64 bytes; 28530b2c86SAlexei Starovoitov }; 29530b2c86SAlexei Starovoitov 30530b2c86SAlexei Starovoitov int main(int argc, char **argv) 31530b2c86SAlexei Starovoitov { 32eb88d585SWilliam Tu struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY}; 33530b2c86SAlexei Starovoitov char filename[256]; 34530b2c86SAlexei Starovoitov FILE *f; 35*a8744f25SMartin KaFai Lau int i, sock, err, id, key = PARSE_IP; 36*a8744f25SMartin KaFai Lau struct bpf_prog_info info = {}; 37*a8744f25SMartin KaFai Lau uint32_t info_len = sizeof(info); 38530b2c86SAlexei Starovoitov 39530b2c86SAlexei Starovoitov snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); 40eb88d585SWilliam Tu setrlimit(RLIMIT_MEMLOCK, &r); 41530b2c86SAlexei Starovoitov 42530b2c86SAlexei Starovoitov if (load_bpf_file(filename)) { 43530b2c86SAlexei Starovoitov printf("%s", bpf_log_buf); 44530b2c86SAlexei Starovoitov return 1; 45530b2c86SAlexei Starovoitov } 46530b2c86SAlexei Starovoitov 47*a8744f25SMartin KaFai Lau /* Test fd array lookup which returns the id of the bpf_prog */ 48*a8744f25SMartin KaFai Lau err = bpf_obj_get_info_by_fd(PARSE_IP_PROG_FD, &info, &info_len); 49*a8744f25SMartin KaFai Lau assert(!err); 50*a8744f25SMartin KaFai Lau err = bpf_map_lookup_elem(PROG_ARRAY_FD, &key, &id); 51*a8744f25SMartin KaFai Lau assert(!err); 52*a8744f25SMartin KaFai Lau assert(id == info.id); 53*a8744f25SMartin KaFai Lau 54530b2c86SAlexei Starovoitov sock = open_raw_sock("lo"); 55530b2c86SAlexei Starovoitov 56530b2c86SAlexei Starovoitov assert(setsockopt(sock, SOL_SOCKET, SO_ATTACH_BPF, &prog_fd[4], 57530b2c86SAlexei Starovoitov sizeof(__u32)) == 0); 58530b2c86SAlexei Starovoitov 59530b2c86SAlexei Starovoitov if (argc > 1) 60530b2c86SAlexei Starovoitov f = popen("ping -c5 localhost", "r"); 61530b2c86SAlexei Starovoitov else 62530b2c86SAlexei Starovoitov f = popen("netperf -l 4 localhost", "r"); 63530b2c86SAlexei Starovoitov (void) f; 64530b2c86SAlexei Starovoitov 65530b2c86SAlexei Starovoitov for (i = 0; i < 5; i++) { 662b064fffSNaveen N. Rao struct bpf_flow_keys key = {}, next_key; 67530b2c86SAlexei Starovoitov struct pair value; 68530b2c86SAlexei Starovoitov 69530b2c86SAlexei Starovoitov sleep(1); 70530b2c86SAlexei Starovoitov printf("IP src.port -> dst.port bytes packets\n"); 71d40fc181SJoe Stringer while (bpf_map_get_next_key(map_fd[2], &key, &next_key) == 0) { 72d40fc181SJoe Stringer bpf_map_lookup_elem(map_fd[2], &next_key, &value); 73530b2c86SAlexei Starovoitov printf("%s.%05d -> %s.%05d %12lld %12lld\n", 74530b2c86SAlexei Starovoitov inet_ntoa((struct in_addr){htonl(next_key.src)}), 75530b2c86SAlexei Starovoitov next_key.port16[0], 76530b2c86SAlexei Starovoitov inet_ntoa((struct in_addr){htonl(next_key.dst)}), 77530b2c86SAlexei Starovoitov next_key.port16[1], 78530b2c86SAlexei Starovoitov value.bytes, value.packets); 79530b2c86SAlexei Starovoitov key = next_key; 80530b2c86SAlexei Starovoitov } 81530b2c86SAlexei Starovoitov } 82530b2c86SAlexei Starovoitov return 0; 83530b2c86SAlexei Starovoitov } 84