1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2022 Benjamin Tissoires */
3 
4 #include ".output/vmlinux.h"
5 #include <bpf/bpf_helpers.h>
6 #include <bpf/bpf_tracing.h>
7 
8 #define HID_BPF_MAX_PROGS 1024
9 
10 struct {
11 	__uint(type, BPF_MAP_TYPE_PROG_ARRAY);
12 	__uint(max_entries, HID_BPF_MAX_PROGS);
13 	__uint(key_size, sizeof(__u32));
14 	__uint(value_size, sizeof(__u32));
15 } hid_jmp_table SEC(".maps");
16 
17 SEC("fmod_ret/__hid_bpf_tail_call")
BPF_PROG(hid_tail_call,struct hid_bpf_ctx * hctx)18 int BPF_PROG(hid_tail_call, struct hid_bpf_ctx *hctx)
19 {
20 	bpf_tail_call(ctx, &hid_jmp_table, hctx->index);
21 
22 	return 0;
23 }
24 
25 char LICENSE[] SEC("license") = "GPL";
26