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/* This file excercises the ELF loader.
*/
#include "common.h"
char __license[] __section("license") = "MIT";
struct bpf_map_def hash_map __section("maps") = {
.type = BPF_MAP_TYPE_HASH,
.key_size = sizeof(uint32_t),
.value_size = sizeof(uint64_t),
.max_entries = 1,
};
static int sub_prog() {
uint32_t key = 0;
uint64_t val = 42;
bpf_map_update_elem(&hash_map, &key, &val, /* BPF_ANY */ 0);
return 0;
}
__section("xdp") int fp_relocation() {
uint32_t key = 0;
uint64_t val = 1;
bpf_map_update_elem(&hash_map, &key, &val, /* BPF_ANY */ 0);
bpf_for_each_map_elem(&hash_map, sub_prog, (void *)0, 0);
uint64_t *new_val = bpf_map_lookup_elem(&hash_map, &key);
if (!new_val) {
return -1;
}
return *new_val;
}
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