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Diffstat (limited to 'samples/bpf/sockex2_user.c')
-rw-r--r--samples/bpf/sockex2_user.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/samples/bpf/sockex2_user.c b/samples/bpf/sockex2_user.c
new file mode 100644
index 000000000..29a276d76
--- /dev/null
+++ b/samples/bpf/sockex2_user.c
@@ -0,0 +1,49 @@
+#include <stdio.h>
+#include <assert.h>
+#include <linux/bpf.h>
+#include "libbpf.h"
+#include "bpf_load.h"
+#include <unistd.h>
+#include <arpa/inet.h>
+
+struct pair {
+ __u64 packets;
+ __u64 bytes;
+};
+
+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++) {
+ int key = 0, next_key;
+ struct pair value;
+
+ while (bpf_get_next_key(map_fd[0], &key, &next_key) == 0) {
+ bpf_lookup_elem(map_fd[0], &next_key, &value);
+ printf("ip %s bytes %lld packets %lld\n",
+ inet_ntoa((struct in_addr){htonl(next_key)}),
+ value.bytes, value.packets);
+ key = next_key;
+ }
+ sleep(1);
+ }
+ return 0;
+}