| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* Copyright (c) 2018 Facebook */ |
| #include <linux/bpf.h> |
| #include <bpf/bpf_helpers.h> |
| |
| int _version SEC("version") = 1; |
| |
| struct ipv_counts { |
| unsigned int v4; |
| unsigned int v6; |
| }; |
| |
| struct bpf_map_def SEC("maps") btf_map = { |
| .type = BPF_MAP_TYPE_ARRAY, |
| .key_size = sizeof(int), |
| .value_size = sizeof(struct ipv_counts), |
| .max_entries = 4, |
| }; |
| |
| struct dummy_tracepoint_args { |
| unsigned long long pad; |
| struct sock *sock; |
| }; |
| |
| __attribute__((noinline)) |
| int test_long_fname_2(struct dummy_tracepoint_args *arg) |
| { |
| struct ipv_counts *counts; |
| int key = 0; |
| |
| if (!arg->sock) |
| return 0; |
| |
| counts = bpf_map_lookup_elem(&btf_map, &key); |
| if (!counts) |
| return 0; |
| |
| counts->v6++; |
| |
| return 0; |
| } |
| |
| __attribute__((noinline)) |
| int test_long_fname_1(struct dummy_tracepoint_args *arg) |
| { |
| return test_long_fname_2(arg); |
| } |
| |
| SEC("dummy_tracepoint") |
| int _dummy_tracepoint(struct dummy_tracepoint_args *arg) |
| { |
| return test_long_fname_1(arg); |
| } |
| |
| char _license[] SEC("license") = "GPL"; |