1 /*
2  * Copyright (C) 2022 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #pragma once
18 
19 /* -=-=-=-=-= WARNING -=-=-=-=-=-
20  *
21  * DO *NOT* *EVER* CHANGE THESE - they *MUST* match what the Tethering mainline module provides!
22  *
23  * You cannot even change them in sync, since newer module must work on older Android T releases.
24  *
25  * You could with difficulty, uprevs of the bpfloader, api detection logic in mainline, etc,
26  * change this in Android U or later, but even that is a very bad idea and not worth the hassle.
27  *
28  *
29  * Mainline Tethering module on T+ is expected to make available to netd (for use by
30  * BandwidthController iptables initialization code) four xt_bpf programs at the following
31  * locations:
32  */
33 #define XT_BPF_NETD(NAME) "/sys/fs/bpf/netd_shared/prog_netd_skfilter_" NAME "_xtbpf"
34 #define XT_BPF_ALLOWLIST_PROG_PATH XT_BPF_NETD("allowlist")
35 #define XT_BPF_DENYLIST_PROG_PATH  XT_BPF_NETD("denylist")
36 #define XT_BPF_EGRESS_PROG_PATH    XT_BPF_NETD("egress")
37 #define XT_BPF_INGRESS_PROG_PATH   XT_BPF_NETD("ingress")
38