1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (c) 2018 Facebook */ 3 #include <linux/bpf.h> 4 #include <bpf/bpf_helpers.h> 5 #include "bpf_legacy.h" 6 7 int _version SEC("version") = 1; 8 9 struct ipv_counts { 10 unsigned int v4; 11 unsigned int v6; 12 }; 13 14 /* just to validate we can handle maps in multiple sections */ 15 struct bpf_map_def SEC("maps") btf_map_legacy = { 16 .type = BPF_MAP_TYPE_ARRAY, 17 .key_size = sizeof(int), 18 .value_size = sizeof(long long), 19 .max_entries = 4, 20 }; 21 22 BPF_ANNOTATE_KV_PAIR(btf_map_legacy, int, struct ipv_counts); 23 24 struct { 25 __uint(type, BPF_MAP_TYPE_ARRAY); 26 __uint(max_entries, 4); 27 __type(key, int); 28 __type(value, struct ipv_counts); 29 } btf_map SEC(".maps"); 30 31 __attribute__((noinline)) 32 int test_long_fname_2(void) 33 { 34 struct ipv_counts *counts; 35 int key = 0; 36 37 counts = bpf_map_lookup_elem(&btf_map, &key); 38 if (!counts) 39 return 0; 40 41 counts->v6++; 42 43 /* just verify we can reference both maps */ 44 counts = bpf_map_lookup_elem(&btf_map_legacy, &key); 45 if (!counts) 46 return 0; 47 48 return 0; 49 } 50 51 __attribute__((noinline)) 52 int test_long_fname_1(void) 53 { 54 return test_long_fname_2(); 55 } 56 57 SEC("dummy_tracepoint") 58 int _dummy_tracepoint(void *arg) 59 { 60 return test_long_fname_1(); 61 } 62 63 char _license[] SEC("license") = "GPL"; 64