Cregit: Linux 5.6: test_btf

Contributors: 4
Author	Tokens	Token Proportion	Commits	Commit Proportion
Martin KaFai Lau	159	77.18%	2	40.00%
Yonghong Song	43	20.87%	1	20.00%
Andrii Nakryiko	3	1.46%	1	20.00%
Toke Höiland-Jörgensen	1	0.49%	1	20.00%
Total	206		5

/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2018 Facebook */
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
#include "bpf_legacy.h"

int _version SEC("version") = 1;

struct ipv_counts {
	unsigned int v4;
	unsigned int v6;
};

struct bpf_map_def SEC("maps") btf_map = {
	.type = BPF_MAP_TYPE_ARRAY,
	.key_size = sizeof(int),
	.value_size = sizeof(struct ipv_counts),
	.max_entries = 4,
};

BPF_ANNOTATE_KV_PAIR(btf_map, int, struct ipv_counts);

struct dummy_tracepoint_args {
	unsigned long long pad;
	struct sock *sock;
};

__attribute__((noinline))
int test_long_fname_2(struct dummy_tracepoint_args *arg)
{
	struct ipv_counts *counts;
	int key = 0;

	if (!arg->sock)
		return 0;

	counts = bpf_map_lookup_elem(&btf_map, &key);
	if (!counts)
		return 0;

	counts->v6++;

	return 0;
}

__attribute__((noinline))
int test_long_fname_1(struct dummy_tracepoint_args *arg)
{
	return test_long_fname_2(arg);
}

SEC("dummy_tracepoint")
int _dummy_tracepoint(struct dummy_tracepoint_args *arg)
{
	return test_long_fname_1(arg);
}

char _license[] SEC("license") = "GPL";

test_btf_haskv.c