| 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") |
| 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 |