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/*
* Copyright (C) 2017 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.
*/
#ifndef BPF_BPFUTILS_H
#define BPF_BPFUTILS_H
#include <linux/if_ether.h>
#include <net/if.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <string>
#include "BpfSyscallWrappers.h"
namespace android {
namespace bpf {
enum class BpfLevel {
// Devices shipped in P with android 4.9 kernel only have the basic eBPF
// functionalities such as xt_bpf and cgroup skb filter.
BASIC_4_9,
// For devices that have 4.14 kernel. It supports advanced features like
// map_in_map and cgroup socket filter.
EXTENDED_4_14,
EXTENDED_4_19,
EXTENDED_5_4,
};
constexpr const int OVERFLOW_COUNTERSET = 2;
constexpr const uint64_t NONEXISTENT_COOKIE = 0;
constexpr const int MINIMUM_API_REQUIRED = 28;
uint64_t getSocketCookie(int sockFd);
int synchronizeKernelRCU();
int setrlimitForTest();
unsigned kernelVersion();
BpfLevel getBpfSupportLevel();
inline bool isBpfSupported() {
return true;
}
#define SKIP_IF_EXTENDED_BPF_NOT_SUPPORTED \
do { \
if (android::bpf::getBpfSupportLevel() < android::bpf::BpfLevel::EXTENDED_4_14) { \
GTEST_LOG_(INFO) << "This test is skipped since extended bpf feature" \
<< "not supported\n"; \
return; \
} \
} while (0)
} // namespace bpf
} // namespace android
#endif
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