linux-zen-server/tools/testing/selftests/bpf/progs/bpf_iter_bpf_link.c

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2023-08-30 17:53:23 +02:00
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2022 Red Hat, Inc. */
#include "bpf_iter.h"
#include <bpf/bpf_helpers.h>
char _license[] SEC("license") = "GPL";
SEC("iter/bpf_link")
int dump_bpf_link(struct bpf_iter__bpf_link *ctx)
{
struct seq_file *seq = ctx->meta->seq;
struct bpf_link *link = ctx->link;
int link_id;
if (!link)
return 0;
link_id = link->id;
bpf_seq_write(seq, &link_id, sizeof(link_id));
return 0;
}