summaryrefslogtreecommitdiffstats
path: root/samples/bpf/sockex1_user.c
diff options
context:
space:
mode:
Diffstat (limited to 'samples/bpf/sockex1_user.c')
-rw-r--r--samples/bpf/sockex1_user.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/samples/bpf/sockex1_user.c b/samples/bpf/sockex1_user.c
new file mode 100644
index 0000000000..9e8d39e245
--- /dev/null
+++ b/samples/bpf/sockex1_user.c
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdio.h>
+#include <assert.h>
+#include <linux/bpf.h>
+#include <bpf/bpf.h>
+#include <bpf/libbpf.h>
+#include "sock_example.h"
+#include <unistd.h>
+#include <arpa/inet.h>
+
+int main(int ac, char **argv)
+{
+ struct bpf_object *obj;
+ struct bpf_program *prog;
+ int map_fd, prog_fd;
+ char filename[256];
+ int i, sock, err;
+ FILE *f;
+
+ snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
+
+ obj = bpf_object__open_file(filename, NULL);
+ if (libbpf_get_error(obj))
+ return 1;
+
+ prog = bpf_object__next_program(obj, NULL);
+ bpf_program__set_type(prog, BPF_PROG_TYPE_SOCKET_FILTER);
+
+ err = bpf_object__load(obj);
+ if (err)
+ return 1;
+
+ prog_fd = bpf_program__fd(prog);
+ 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;
+}