179d49ba0SDaniel Borkmann // SPDX-License-Identifier: GPL-2.0 279d49ba0SDaniel Borkmann #include <linux/bpf.h> 379d49ba0SDaniel Borkmann 43e689141SToke Høiland-Jørgensen #include <bpf/bpf_helpers.h> 579d49ba0SDaniel Borkmann 679d49ba0SDaniel Borkmann struct { 779d49ba0SDaniel Borkmann __uint(type, BPF_MAP_TYPE_PROG_ARRAY); 879d49ba0SDaniel Borkmann __uint(max_entries, 1); 979d49ba0SDaniel Borkmann __uint(key_size, sizeof(__u32)); 1079d49ba0SDaniel Borkmann __uint(value_size, sizeof(__u32)); 1179d49ba0SDaniel Borkmann } jmp_table SEC(".maps"); 1279d49ba0SDaniel Borkmann 1379d49ba0SDaniel Borkmann static volatile int count; 1479d49ba0SDaniel Borkmann 1579d49ba0SDaniel Borkmann SEC("classifier/0") 1679d49ba0SDaniel Borkmann int bpf_func_0(struct __sk_buff *skb) 1779d49ba0SDaniel Borkmann { 1879d49ba0SDaniel Borkmann count++; 19faef26faSDaniel Borkmann bpf_tail_call_static(skb, &jmp_table, 0); 2079d49ba0SDaniel Borkmann return 1; 2179d49ba0SDaniel Borkmann } 2279d49ba0SDaniel Borkmann 2379d49ba0SDaniel Borkmann SEC("classifier") 2479d49ba0SDaniel Borkmann int entry(struct __sk_buff *skb) 2579d49ba0SDaniel Borkmann { 26faef26faSDaniel Borkmann bpf_tail_call_static(skb, &jmp_table, 0); 2779d49ba0SDaniel Borkmann return 0; 2879d49ba0SDaniel Borkmann } 2979d49ba0SDaniel Borkmann 3079d49ba0SDaniel Borkmann char __license[] SEC("license") = "GPL"; 3179d49ba0SDaniel Borkmann int _version SEC("version") = 1; 32