Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/tools/bpf/bpftool/iter.c b/tools/bpf/bpftool/iter.c
new file mode 100644
index 0000000..3b1aad7
--- /dev/null
+++ b/tools/bpf/bpftool/iter.c
@@ -0,0 +1,116 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+// Copyright (C) 2020 Facebook
+
+#define _GNU_SOURCE
+#include <unistd.h>
+#include <linux/err.h>
+#include <bpf/libbpf.h>
+
+#include "main.h"
+
+static int do_pin(int argc, char **argv)
+{
+ DECLARE_LIBBPF_OPTS(bpf_iter_attach_opts, iter_opts);
+ union bpf_iter_link_info linfo;
+ const char *objfile, *path;
+ struct bpf_program *prog;
+ struct bpf_object *obj;
+ struct bpf_link *link;
+ int err = -1, map_fd = -1;
+
+ if (!REQ_ARGS(2))
+ usage();
+
+ objfile = GET_ARG();
+ path = GET_ARG();
+
+ /* optional arguments */
+ if (argc) {
+ if (is_prefix(*argv, "map")) {
+ NEXT_ARG();
+
+ if (!REQ_ARGS(2)) {
+ p_err("incorrect map spec");
+ return -1;
+ }
+
+ map_fd = map_parse_fd(&argc, &argv);
+ if (map_fd < 0)
+ return -1;
+
+ memset(&linfo, 0, sizeof(linfo));
+ linfo.map.map_fd = map_fd;
+ iter_opts.link_info = &linfo;
+ iter_opts.link_info_len = sizeof(linfo);
+ }
+ }
+
+ obj = bpf_object__open(objfile);
+ if (IS_ERR(obj)) {
+ p_err("can't open objfile %s", objfile);
+ goto close_map_fd;
+ }
+
+ err = bpf_object__load(obj);
+ if (err) {
+ p_err("can't load objfile %s", objfile);
+ goto close_obj;
+ }
+
+ prog = bpf_program__next(NULL, obj);
+ if (!prog) {
+ p_err("can't find bpf program in objfile %s", objfile);
+ goto close_obj;
+ }
+
+ link = bpf_program__attach_iter(prog, &iter_opts);
+ if (IS_ERR(link)) {
+ err = PTR_ERR(link);
+ p_err("attach_iter failed for program %s",
+ bpf_program__name(prog));
+ goto close_obj;
+ }
+
+ err = mount_bpffs_for_pin(path);
+ if (err)
+ goto close_link;
+
+ err = bpf_link__pin(link, path);
+ if (err) {
+ p_err("pin_iter failed for program %s to path %s",
+ bpf_program__name(prog), path);
+ goto close_link;
+ }
+
+close_link:
+ bpf_link__destroy(link);
+close_obj:
+ bpf_object__close(obj);
+close_map_fd:
+ if (map_fd >= 0)
+ close(map_fd);
+ return err;
+}
+
+static int do_help(int argc, char **argv)
+{
+ fprintf(stderr,
+ "Usage: %1$s %2$s pin OBJ PATH [map MAP]\n"
+ " %1$s %2$s help\n"
+ " " HELP_SPEC_MAP "\n"
+ "",
+ bin_name, "iter");
+
+ return 0;
+}
+
+static const struct cmd cmds[] = {
+ { "help", do_help },
+ { "pin", do_pin },
+ { 0 }
+};
+
+int do_iter(int argc, char **argv)
+{
+ return cmd_select(cmds, argc, argv, do_help);
+}