249e2f869e
For older devices that doesn't have bpf support, skip the bpf native tests so we don't get false alarms. Fixed some compiler warning and added the clang-format check. Test: ./libnetdbpf_test/libnetdbpf_test Bug: 119526856 Change-Id: Icb73a8ee9b9dff9a0da28b96578e1245f1f3724f
293 lines
9.3 KiB
C++
293 lines
9.3 KiB
C++
/*
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* Copyright (C) 2018 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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#include <fstream>
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#include <iostream>
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#include <string>
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#include <vector>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <linux/inet_diag.h>
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#include <linux/sock_diag.h>
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#include <net/if.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <gtest/gtest.h>
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#include <android-base/stringprintf.h>
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#include <android-base/strings.h>
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#include "bpf/BpfMap.h"
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#include "bpf/BpfUtils.h"
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using ::testing::Test;
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namespace android {
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namespace bpf {
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using base::unique_fd;
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using netdutils::StatusOr;
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constexpr uint32_t TEST_MAP_SIZE = 10;
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constexpr uint32_t TEST_KEY1 = 1;
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constexpr uint32_t TEST_VALUE1 = 10;
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constexpr const char PINNED_MAP_PATH[] = "/sys/fs/bpf/testMap";
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class BpfMapTest : public testing::Test {
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protected:
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BpfMapTest() {}
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int mMapFd;
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void SetUp() {
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SKIP_IF_BPF_NOT_SUPPORTED;
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if (!access(PINNED_MAP_PATH, R_OK)) {
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EXPECT_EQ(0, remove(PINNED_MAP_PATH));
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}
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mMapFd = createMap(BPF_MAP_TYPE_HASH, sizeof(uint32_t), sizeof(uint32_t), TEST_MAP_SIZE,
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BPF_F_NO_PREALLOC);
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}
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void TearDown() {
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SKIP_IF_BPF_NOT_SUPPORTED;
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if (!access(PINNED_MAP_PATH, R_OK)) {
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EXPECT_EQ(0, remove(PINNED_MAP_PATH));
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}
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close(mMapFd);
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}
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void checkMapInvalid(BpfMap<uint32_t, uint32_t>& map) {
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EXPECT_FALSE(map.isValid());
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EXPECT_EQ(-1, map.getMap().get());
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EXPECT_TRUE(map.getPinnedPath().empty());
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}
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void checkMapValid(BpfMap<uint32_t, uint32_t>& map) {
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EXPECT_LE(0, map.getMap().get());
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EXPECT_TRUE(map.isValid());
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}
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void writeToMapAndCheck(BpfMap<uint32_t, uint32_t>& map, uint32_t key, uint32_t value) {
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ASSERT_TRUE(isOk(map.writeValue(key, value, BPF_ANY)));
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uint32_t value_read;
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ASSERT_EQ(0, findMapEntry(map.getMap(), &key, &value_read));
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checkValueAndStatus(value, value_read);
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}
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void checkValueAndStatus(uint32_t refValue, StatusOr<uint32_t> value) {
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ASSERT_TRUE(isOk(value.status()));
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ASSERT_EQ(refValue, value.value());
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}
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void populateMap(uint32_t total, BpfMap<uint32_t, uint32_t>& map) {
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for (uint32_t key = 0; key < total; key++) {
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uint32_t value = key * 10;
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EXPECT_TRUE(isOk(map.writeValue(key, value, BPF_ANY)));
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}
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}
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void expectMapEmpty(BpfMap<uint32_t, uint32_t>& map) {
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auto isEmpty = map.isEmpty();
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ASSERT_TRUE(isOk(isEmpty));
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ASSERT_TRUE(isEmpty.value());
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}
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};
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TEST_F(BpfMapTest, constructor) {
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SKIP_IF_BPF_NOT_SUPPORTED;
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BpfMap<uint32_t, uint32_t> testMap1;
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checkMapInvalid(testMap1);
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BpfMap<uint32_t, uint32_t> testMap2(mMapFd);
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checkMapValid(testMap2);
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EXPECT_TRUE(testMap2.getPinnedPath().empty());
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BpfMap<uint32_t, uint32_t> testMap3(BPF_MAP_TYPE_HASH, TEST_MAP_SIZE, BPF_F_NO_PREALLOC);
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checkMapValid(testMap3);
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EXPECT_TRUE(testMap3.getPinnedPath().empty());
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}
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TEST_F(BpfMapTest, basicHelpers) {
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SKIP_IF_BPF_NOT_SUPPORTED;
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BpfMap<uint32_t, uint32_t> testMap(mMapFd);
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uint32_t key = TEST_KEY1;
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uint32_t value_write = TEST_VALUE1;
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writeToMapAndCheck(testMap, key, value_write);
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StatusOr<uint32_t> value_read = testMap.readValue(key);
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checkValueAndStatus(value_write, value_read);
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StatusOr<uint32_t> key_read = testMap.getFirstKey();
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checkValueAndStatus(key, key_read);
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ASSERT_TRUE(isOk(testMap.deleteValue(key)));
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ASSERT_GT(0, findMapEntry(testMap.getMap(), &key, &value_read));
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ASSERT_EQ(ENOENT, errno);
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}
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TEST_F(BpfMapTest, reset) {
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SKIP_IF_BPF_NOT_SUPPORTED;
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BpfMap<uint32_t, uint32_t> testMap;
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testMap.reset(mMapFd);
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uint32_t key = TEST_KEY1;
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uint32_t value_write = TEST_VALUE1;
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writeToMapAndCheck(testMap, key, value_write);
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testMap.reset();
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checkMapInvalid(testMap);
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unique_fd invalidFd(mMapFd);
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ASSERT_GT(0, findMapEntry(invalidFd, &key, &value_write));
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ASSERT_EQ(EBADF, errno);
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}
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TEST_F(BpfMapTest, moveConstructor) {
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SKIP_IF_BPF_NOT_SUPPORTED;
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BpfMap<uint32_t, uint32_t> testMap1(mMapFd);
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BpfMap<uint32_t, uint32_t> testMap2;
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testMap2 = std::move(testMap1);
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uint32_t key = TEST_KEY1;
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checkMapInvalid(testMap1);
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uint32_t value = TEST_VALUE1;
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writeToMapAndCheck(testMap2, key, value);
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}
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TEST_F(BpfMapTest, pinnedToPath) {
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SKIP_IF_BPF_NOT_SUPPORTED;
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BpfMap<uint32_t, uint32_t> testMap1(mMapFd);
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EXPECT_OK(testMap1.pinToPath(PINNED_MAP_PATH));
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EXPECT_EQ(0, access(PINNED_MAP_PATH, R_OK));
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EXPECT_EQ(0, testMap1.getPinnedPath().compare(PINNED_MAP_PATH));
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BpfMap<uint32_t, uint32_t> testMap2(mapRetrieve(PINNED_MAP_PATH, 0));
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checkMapValid(testMap2);
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uint32_t key = TEST_KEY1;
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uint32_t value = TEST_VALUE1;
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writeToMapAndCheck(testMap1, key, value);
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StatusOr<uint32_t> value_read = testMap2.readValue(key);
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checkValueAndStatus(value, value_read);
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}
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TEST_F(BpfMapTest, SetUpMap) {
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SKIP_IF_BPF_NOT_SUPPORTED;
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BpfMap<uint32_t, uint32_t> testMap1;
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EXPECT_OK(testMap1.getOrCreate(TEST_MAP_SIZE, PINNED_MAP_PATH, BPF_MAP_TYPE_HASH));
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EXPECT_EQ(0, access(PINNED_MAP_PATH, R_OK));
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checkMapValid(testMap1);
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EXPECT_EQ(0, testMap1.getPinnedPath().compare(PINNED_MAP_PATH));
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BpfMap<uint32_t, uint32_t> testMap2;
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EXPECT_OK(testMap2.getOrCreate(TEST_MAP_SIZE, PINNED_MAP_PATH, BPF_MAP_TYPE_HASH));
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checkMapValid(testMap2);
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EXPECT_EQ(0, testMap2.getPinnedPath().compare(PINNED_MAP_PATH));
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uint32_t key = TEST_KEY1;
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uint32_t value = TEST_VALUE1;
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writeToMapAndCheck(testMap1, key, value);
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StatusOr<uint32_t> value_read = testMap2.readValue(key);
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checkValueAndStatus(value, value_read);
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}
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TEST_F(BpfMapTest, iterate) {
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SKIP_IF_BPF_NOT_SUPPORTED;
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BpfMap<uint32_t, uint32_t> testMap(mMapFd);
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populateMap(TEST_MAP_SIZE, testMap);
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int totalCount = 0;
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int totalSum = 0;
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const auto iterateWithDeletion = [&totalCount, &totalSum](const uint32_t& key,
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BpfMap<uint32_t, uint32_t>& map) {
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EXPECT_GE((uint32_t)TEST_MAP_SIZE, key);
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totalCount++;
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totalSum += key;
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return map.deleteValue(key);
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};
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EXPECT_OK(testMap.iterate(iterateWithDeletion));
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EXPECT_EQ((int)TEST_MAP_SIZE, totalCount);
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EXPECT_EQ(((1 + TEST_MAP_SIZE - 1) * (TEST_MAP_SIZE - 1)) / 2, (uint32_t)totalSum);
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expectMapEmpty(testMap);
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}
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TEST_F(BpfMapTest, iterateWithValue) {
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SKIP_IF_BPF_NOT_SUPPORTED;
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BpfMap<uint32_t, uint32_t> testMap(mMapFd);
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populateMap(TEST_MAP_SIZE, testMap);
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int totalCount = 0;
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int totalSum = 0;
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const auto iterateWithDeletion = [&totalCount, &totalSum](const uint32_t& key,
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const uint32_t& value,
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BpfMap<uint32_t, uint32_t>& map) {
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EXPECT_GE((uint32_t)TEST_MAP_SIZE, key);
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EXPECT_EQ(value, key * 10);
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totalCount++;
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totalSum += value;
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return map.deleteValue(key);
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};
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EXPECT_OK(testMap.iterateWithValue(iterateWithDeletion));
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EXPECT_EQ((int)TEST_MAP_SIZE, totalCount);
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EXPECT_EQ(((1 + TEST_MAP_SIZE - 1) * (TEST_MAP_SIZE - 1)) * 5, (uint32_t)totalSum);
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expectMapEmpty(testMap);
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}
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TEST_F(BpfMapTest, mapIsEmpty) {
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SKIP_IF_BPF_NOT_SUPPORTED;
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BpfMap<uint32_t, uint32_t> testMap(mMapFd);
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expectMapEmpty(testMap);
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uint32_t key = TEST_KEY1;
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uint32_t value_write = TEST_VALUE1;
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writeToMapAndCheck(testMap, key, value_write);
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auto isEmpty = testMap.isEmpty();
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ASSERT_TRUE(isOk(isEmpty));
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ASSERT_FALSE(isEmpty.value());
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ASSERT_TRUE(isOk(testMap.deleteValue(key)));
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ASSERT_GT(0, findMapEntry(testMap.getMap(), &key, &value_write));
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ASSERT_EQ(ENOENT, errno);
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expectMapEmpty(testMap);
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int entriesSeen = 0;
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EXPECT_OK(testMap.iterate(
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[&entriesSeen](const unsigned int&,
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const BpfMap<unsigned int, unsigned int>&) -> netdutils::Status {
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entriesSeen++;
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return netdutils::status::ok;
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}));
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EXPECT_EQ(0, entriesSeen);
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EXPECT_OK(testMap.iterateWithValue(
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[&entriesSeen](const unsigned int&, const unsigned int&,
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const BpfMap<unsigned int, unsigned int>&) -> netdutils::Status {
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entriesSeen++;
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return netdutils::status::ok;
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}));
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EXPECT_EQ(0, entriesSeen);
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}
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TEST_F(BpfMapTest, mapClear) {
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SKIP_IF_BPF_NOT_SUPPORTED;
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BpfMap<uint32_t, uint32_t> testMap(mMapFd);
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populateMap(TEST_MAP_SIZE, testMap);
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auto isEmpty = testMap.isEmpty();
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ASSERT_TRUE(isOk(isEmpty));
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ASSERT_FALSE(isEmpty.value());
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ASSERT_TRUE(isOk(testMap.clear()));
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expectMapEmpty(testMap);
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}
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} // namespace bpf
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} // namespace android
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