4c9e9ecc57
Add the necessary Android.bp file and fix the compile error for the new
bpf project.
Fix the run time restart false alarm in bpf loader.
Bug: 112334572
Test: device boot and dumpsys netd show eBPF object okay, runtime
restart netd and no bpfloader error showed in logcat.
Change-Id: Iae193bda45e50b7d22479086d6403e3c4fb185c4
101 lines
3.8 KiB
C++
101 lines
3.8 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef LOG_TAG
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#define LOG_TAG "bpfloader"
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#endif
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#include <arpa/inet.h>
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#include <elf.h>
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#include <error.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <linux/bpf.h>
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#include <linux/unistd.h>
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#include <net/if.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <android-base/stringprintf.h>
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#include <android-base/unique_fd.h>
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#include <log/log.h>
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#include <netdutils/Misc.h>
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#include <netdutils/Slice.h>
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#include "bpf/BpfUtils.h"
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#include "netdbpf/bpf_shared.h"
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using android::base::unique_fd;
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using android::netdutils::Slice;
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#define BPF_PROG_PATH "/system/etc/bpf"
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#define BPF_PROG_SRC BPF_PROG_PATH "/bpf_kern.o"
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#define CLEANANDEXIT(ret, mapPatterns) \
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do { \
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for (int i = 0; i < mapPatterns.size(); i++) { \
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if (mapPatterns[i].fd > -1) { \
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close(mapPatterns[i].fd); \
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} \
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} \
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return ret; \
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} while (0)
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using android::bpf::BpfMapInfo;
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using android::bpf::BpfProgInfo;
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int main() {
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const std::vector<BpfMapInfo> mapPatterns = {
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BpfMapInfo(COOKIE_TAG_MAP, COOKIE_TAG_MAP_PATH),
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BpfMapInfo(UID_COUNTERSET_MAP, UID_COUNTERSET_MAP_PATH),
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BpfMapInfo(APP_UID_STATS_MAP, APP_UID_STATS_MAP_PATH),
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BpfMapInfo(UID_STATS_MAP, UID_STATS_MAP_PATH),
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BpfMapInfo(TAG_STATS_MAP, TAG_STATS_MAP_PATH),
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BpfMapInfo(IFACE_STATS_MAP, IFACE_STATS_MAP_PATH),
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BpfMapInfo(CONFIGURATION_MAP, CONFIGURATION_MAP_PATH),
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BpfMapInfo(UID_OWNER_MAP, UID_OWNER_MAP_PATH),
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};
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for (int i = 0; i < mapPatterns.size(); i++) {
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if (mapPatterns[i].fd < 0) {
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ALOGE("Rerieve Map from %s failed: %d", mapPatterns[i].path.c_str(), mapPatterns[i].fd);
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CLEANANDEXIT(-1, mapPatterns);
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}
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}
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BpfProgInfo programs[] = {
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{BPF_CGROUP_INET_EGRESS, BPF_EGRESS_PROG_PATH, BPF_CGROUP_EGRESS_PROG_NAME,
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BPF_PROG_TYPE_CGROUP_SKB, unique_fd(-1)},
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{BPF_CGROUP_INET_INGRESS, BPF_INGRESS_PROG_PATH, BPF_CGROUP_INGRESS_PROG_NAME,
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BPF_PROG_TYPE_CGROUP_SKB, unique_fd(-1)},
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{MAX_BPF_ATTACH_TYPE, XT_BPF_INGRESS_PROG_PATH, XT_BPF_INGRESS_PROG_NAME,
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BPF_PROG_TYPE_SOCKET_FILTER, unique_fd(-1)},
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{MAX_BPF_ATTACH_TYPE, XT_BPF_EGRESS_PROG_PATH, XT_BPF_EGRESS_PROG_NAME,
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BPF_PROG_TYPE_SOCKET_FILTER, unique_fd(-1)},
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{MAX_BPF_ATTACH_TYPE, XT_BPF_WHITELIST_PROG_PATH, XT_BPF_WHITELIST_PROG_NAME,
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BPF_PROG_TYPE_SOCKET_FILTER, unique_fd(-1)},
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{MAX_BPF_ATTACH_TYPE, XT_BPF_BLACKLIST_PROG_PATH, XT_BPF_BLACKLIST_PROG_NAME,
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BPF_PROG_TYPE_SOCKET_FILTER, unique_fd(-1)}};
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int ret = android::bpf::parseProgramsFromFile(BPF_PROG_SRC, programs, ARRAY_SIZE(programs),
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mapPatterns);
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CLEANANDEXIT(ret, mapPatterns);
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}
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