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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2020 Facebook */
#include <vmlinux.h>
#include <bpf/bpf_tracing.h>
#include <bpf/bpf_helpers.h>
struct {
__uint(type, BPF_MAP_TYPE_SK_STORAGE);
__uint(map_flags, BPF_F_NO_PREALLOC);
__type(key, int);
__type(value, int);
} sk_stg_map SEC(".maps");
SEC("fentry/bpf_sk_storage_free")
int BPF_PROG(trace_bpf_sk_storage_free, struct sock *sk)
{
int *value;
value = bpf_sk_storage_get(&sk_stg_map, sk, 0,
BPF_SK_STORAGE_GET_F_CREATE);
if (value)
*value = 1;
return 0;
}
char _license[] SEC("license") = "GPL";
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