1// SPDX-License-Identifier: GPL-2.0 2#include <linux/bpf.h> 3#include <bpf/bpf_helpers.h> 4#include <bpf/bpf_tracing.h> 5 6char _license[] SEC("license") = "GPL"; 7 8struct { 9 __uint(type, BPF_MAP_TYPE_PROG_ARRAY); 10 __uint(max_entries, 1); 11 __uint(key_size, sizeof(__u32)); 12 __uint(value_size, sizeof(__u32)); 13} jmp_table SEC(".maps"); 14 15SEC("?fentry/bpf_fentry_test1") 16int BPF_PROG(test, int a) 17{ 18 bpf_tail_call_static(ctx, &jmp_table, 0); 19 return 0; 20} 21 22SEC("fentry/bpf_fentry_test1") 23int BPF_PROG(call1, int a) 24{ 25 return 0; 26} 27 28SEC("fentry/bpf_fentry_test1") 29int BPF_PROG(call2, int a) 30{ 31 return 0; 32} 33