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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2018 Facebook */
#include <stddef.h>
#include <linux/bpf.h>
#include <linux/types.h>
#include <bpf/bpf_helpers.h>
struct {
__uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS);
__uint(max_entries, 1);
__uint(map_flags, 0);
__type(key, __u32);
__type(value, __u32);
} mim_array SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_HASH_OF_MAPS);
__uint(max_entries, 1);
__uint(map_flags, 0);
__type(key, int);
__type(value, __u32);
} mim_hash SEC(".maps");
/* The following three maps are used to test
* perf_event_array map can be an inner
* map of hash/array_of_maps.
*/
struct perf_event_array {
__uint(type, BPF_MAP_TYPE_PERF_EVENT_ARRAY);
__type(key, __u32);
__type(value, __u32);
} inner_map0 SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS);
__uint(max_entries, 1);
__type(key, __u32);
__array(values, struct perf_event_array);
} mim_array_pe SEC(".maps") = {
.values = {&inner_map0}};
struct {
__uint(type, BPF_MAP_TYPE_HASH_OF_MAPS);
__uint(max_entries, 1);
__type(key, __u32);
__array(values, struct perf_event_array);
} mim_hash_pe SEC(".maps") = {
.values = {&inner_map0}};
SEC("xdp")
int xdp_mimtest0(struct xdp_md *ctx)
{
int value = 123;
int *value_p;
int key = 0;
void *map;
map = bpf_map_lookup_elem(&mim_array, &key);
if (!map)
return XDP_DROP;
bpf_map_update_elem(map, &key, &value, 0);
value_p = bpf_map_lookup_elem(map, &key);
if (!value_p || *value_p != 123)
return XDP_DROP;
map = bpf_map_lookup_elem(&mim_hash, &key);
if (!map)
return XDP_DROP;
bpf_map_update_elem(map, &key, &value, 0);
return XDP_PASS;
}
char _license[] SEC("license") = "GPL";
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