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999d82cbc0
Change the bpf programs test_btf_haskv.c and test_btf_nokv.c to have two sections, and enhance test_btf.c test_file feature to test btf func_info returned by the kernel. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
55 lines
1,013 B
C
55 lines
1,013 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2018 Facebook */
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#include <linux/bpf.h>
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#include "bpf_helpers.h"
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int _version SEC("version") = 1;
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struct ipv_counts {
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unsigned int v4;
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unsigned int v6;
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};
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struct bpf_map_def SEC("maps") btf_map = {
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.type = BPF_MAP_TYPE_ARRAY,
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.key_size = sizeof(int),
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.value_size = sizeof(struct ipv_counts),
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.max_entries = 4,
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};
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struct dummy_tracepoint_args {
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unsigned long long pad;
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struct sock *sock;
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};
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__attribute__((noinline))
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static int test_long_fname_2(struct dummy_tracepoint_args *arg)
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{
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struct ipv_counts *counts;
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int key = 0;
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if (!arg->sock)
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return 0;
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counts = bpf_map_lookup_elem(&btf_map, &key);
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if (!counts)
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return 0;
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counts->v6++;
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return 0;
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}
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__attribute__((noinline))
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static int test_long_fname_1(struct dummy_tracepoint_args *arg)
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{
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return test_long_fname_2(arg);
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}
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SEC("dummy_tracepoint")
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int _dummy_tracepoint(struct dummy_tracepoint_args *arg)
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{
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return test_long_fname_1(arg);
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}
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char _license[] SEC("license") = "GPL";
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