netbpfload/Android.bp

//
// Copyright (C) 2023 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

package {
    default_team: "trendy_team_fwk_core_networking",
}

install_symlink {
    name: "platform_ethtool_symlink",
    symlink_target: "/apex/com.android.tethering/bin/ethtool",
    // installed_location is relative to /system because that's the default partition for soong
    // modules, unless we add something like `system_ext_specific: true` like in hwservicemanager.
    installed_location: "bin/ethtool",
}

install_symlink {
    name: "platform_netbpfload_symlink",
    symlink_target: "/apex/com.android.tethering/bin/netbpfload",
    installed_location: "bin/netbpfload",
    init_rc: ["netbpfload.rc"],
}

phony {
    name: "mainline_tethering_platform_components",
    required: [
        "bpfloader",
        "platform_ethtool_symlink",
        "platform_netbpfload_symlink",
    ],
}

cc_binary {
    name: "netbpfload",

    defaults: ["bpf_defaults"],
    cflags: [
        "-Wall",
        "-Werror",
        "-Wthread-safety",
    ],
    sanitize: {
        integer_overflow: true,
    },

    header_libs: ["bpf_headers"],
    shared_libs: [
        "libbase",
        "liblog",
    ],
    srcs: [
        "loader.cpp",
        "NetBpfLoad.cpp",
    ],
    apex_available: [
        "com.android.tethering",
        "//apex_available:platform",
    ],
    // really should be Android 13/T (33), but we cannot include binaries built
    // against newer sdk in the apex, which still targets 30(R):
    // module "netbpfload" variant "android_x86_apex30": should support
    // min_sdk_version(30) for "com.android.tethering": newer SDK(34).
    min_sdk_version: "30",
    installable: false,
}

// Versioned netbpfload init rc: init system will process it only on api T/33+ devices
// Note: R[30] S[31] Sv2[32] T[33] U[34] V[35])
//
// For details of versioned rc files see:
// https://android.googlesource.com/platform/system/core/+/HEAD/init/README.md#versioned-rc-files-within-apexs
prebuilt_etc {
    name: "netbpfload.mainline.rc",
    src: "netbpfload.mainline.rc",
    filename: "netbpfload.33rc",
    installable: false,
}