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// SPDX-License-Identifier: GPL-2.0
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
char _license[] SEC("license") = "GPL";
struct {
__uint(type, BPF_MAP_TYPE_HASH);
__uint(max_entries, 2);
__type(key, struct bigelement);
__type(value, __u32);
} hash_map SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_PERCPU_ARRAY);
__uint(max_entries, 1);
__type(key, __u32);
__type(value, struct bigelement);
} key_map SEC(".maps");
struct bigelement {
int a;
char b[4096];
long long c;
};
SEC("raw_tracepoint/sys_enter")
int bpf_hash_large_key_test(void *ctx)
{
int zero = 0, err = 1, value = 42;
struct bigelement *key;
key = bpf_map_lookup_elem(&key_map, &zero);
if (!key)
return 0;
key->c = 1;
if (bpf_map_update_elem(&hash_map, key, &value, BPF_ANY))
return 0;
return 0;
}
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