ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/samples/bpf/test_cgrp2_array_pin.c b/marvell/linux/samples/bpf/test_cgrp2_array_pin.c
new file mode 100644
index 0000000..6d564aa
--- /dev/null
+++ b/marvell/linux/samples/bpf/test_cgrp2_array_pin.c
@@ -0,0 +1,106 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (c) 2016 Facebook
+ */
+#include <linux/unistd.h>
+#include <linux/bpf.h>
+
+#include <stdio.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#include <bpf/bpf.h>
+
+static void usage(void)
+{
+ printf("Usage: test_cgrp2_array_pin [...]\n");
+ printf(" -F <file> File to pin an BPF cgroup array\n");
+ printf(" -U <file> Update an already pinned BPF cgroup array\n");
+ printf(" -v <value> Full path of the cgroup2\n");
+ printf(" -h Display this help\n");
+}
+
+int main(int argc, char **argv)
+{
+ const char *pinned_file = NULL, *cg2 = NULL;
+ int create_array = 1;
+ int array_key = 0;
+ int array_fd = -1;
+ int cg2_fd = -1;
+ int ret = -1;
+ int opt;
+
+ while ((opt = getopt(argc, argv, "F:U:v:")) != -1) {
+ switch (opt) {
+ /* General args */
+ case 'F':
+ pinned_file = optarg;
+ break;
+ case 'U':
+ pinned_file = optarg;
+ create_array = 0;
+ break;
+ case 'v':
+ cg2 = optarg;
+ break;
+ default:
+ usage();
+ goto out;
+ }
+ }
+
+ if (!cg2 || !pinned_file) {
+ usage();
+ goto out;
+ }
+
+ cg2_fd = open(cg2, O_RDONLY);
+ if (cg2_fd < 0) {
+ fprintf(stderr, "open(%s,...): %s(%d)\n",
+ cg2, strerror(errno), errno);
+ goto out;
+ }
+
+ if (create_array) {
+ array_fd = bpf_create_map(BPF_MAP_TYPE_CGROUP_ARRAY,
+ sizeof(uint32_t), sizeof(uint32_t),
+ 1, 0);
+ if (array_fd < 0) {
+ fprintf(stderr,
+ "bpf_create_map(BPF_MAP_TYPE_CGROUP_ARRAY,...): %s(%d)\n",
+ strerror(errno), errno);
+ goto out;
+ }
+ } else {
+ array_fd = bpf_obj_get(pinned_file);
+ if (array_fd < 0) {
+ fprintf(stderr, "bpf_obj_get(%s): %s(%d)\n",
+ pinned_file, strerror(errno), errno);
+ goto out;
+ }
+ }
+
+ ret = bpf_map_update_elem(array_fd, &array_key, &cg2_fd, 0);
+ if (ret) {
+ perror("bpf_map_update_elem");
+ goto out;
+ }
+
+ if (create_array) {
+ ret = bpf_obj_pin(array_fd, pinned_file);
+ if (ret) {
+ fprintf(stderr, "bpf_obj_pin(..., %s): %s(%d)\n",
+ pinned_file, strerror(errno), errno);
+ goto out;
+ }
+ }
+
+out:
+ if (array_fd != -1)
+ close(array_fd);
+ if (cg2_fd != -1)
+ close(cg2_fd);
+ return ret;
+}