1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
/* This file excercises the ELF loader. It is not a valid BPF program. */
#include "common.h"
struct bpf_map_def dummy __section("maps") = {
.type = BPF_MAP_TYPE_HASH,
.key_size = sizeof(uint32_t),
.value_size = sizeof(uint64_t),
.max_entries = 1,
.map_flags = 0,
};
/* The static qualifier leads to clang not emitting a symbol. */
static 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,
.map_flags = 0,
};
__section("xdp") int xdp_prog() {
uint32_t key = 0;
void *p = bpf_map_lookup_elem(&hash_map, &key);
return !!p;
}
|
