[NETD-BPF#1] Move libnetdutils to frameworks/libs/net/...
libnetdutils is referenced by netd.c and TrafficController.cpp, which
are going to be mainlined. Therefore, move libnetdutils to a common
place where both mainline module and platform code (Netd) can refer to.
Bug: 202086915
Test: build; flash; cd system/netd; atest
Ignore-AOSP-First: the netd change(same topic) would not automerge from
aosp.
No-Typo-Check: Clean code move with no other changes.
BYPASS_INCLUSIVE_LANGUAGE_REASON=Clean code move with no other changes.
Change-Id: I645bfe35f6543149c9a9f894cd4158d27a481abe
diff --git a/staticlibs/netd/libnetdutils/BackoffSequenceTest.cpp b/staticlibs/netd/libnetdutils/BackoffSequenceTest.cpp
new file mode 100644
index 0000000..b6653fe
--- /dev/null
+++ b/staticlibs/netd/libnetdutils/BackoffSequenceTest.cpp
@@ -0,0 +1,186 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+#include <gtest/gtest.h>
+
+#include "netdutils/BackoffSequence.h"
+
+namespace android {
+namespace netdutils {
+
+TEST(BackoffSequence, defaults) {
+ BackoffSequence<uint32_t> backoff;
+
+ EXPECT_TRUE(backoff.hasNextTimeout());
+ EXPECT_EQ(0x00000001U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000002U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000004U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000008U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000010U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000020U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000040U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000080U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000100U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000200U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000400U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000800U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00001000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00002000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00004000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00008000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00010000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00020000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00040000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00080000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00100000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00200000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00400000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00800000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x01000000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x02000000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x04000000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x08000000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x10000000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x20000000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x40000000U, backoff.getNextTimeout());
+ EXPECT_EQ(0x80000000U, backoff.getNextTimeout());
+ // Maxes out, and stays there, ad infinitum.
+ for (int i = 0; i < 10; i++) {
+ EXPECT_TRUE(backoff.hasNextTimeout());
+ EXPECT_EQ(0xffffffffU, backoff.getNextTimeout());
+ }
+}
+
+TEST(BackoffSequence, backoffToOncePerHour) {
+ auto backoff = BackoffSequence<uint32_t>::Builder()
+ .withInitialRetransmissionTime(1)
+ .withMaximumRetransmissionTime(3600)
+ .build();
+
+ EXPECT_TRUE(backoff.hasNextTimeout());
+ EXPECT_EQ(0x00000001U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000002U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000004U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000008U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000010U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000020U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000040U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000080U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000100U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000200U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000400U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000800U, backoff.getNextTimeout());
+ // Maxes out, and stays there, ad infinitum.
+ for (int i = 0; i < 10; i++) {
+ EXPECT_TRUE(backoff.hasNextTimeout());
+ EXPECT_EQ(3600U, backoff.getNextTimeout());
+ }
+}
+
+TEST(BackoffSequence, simpleMaxRetransCount) {
+ auto backoff = BackoffSequence<uint32_t>::Builder()
+ .withInitialRetransmissionTime(3)
+ .withMaximumRetransmissionCount(7)
+ .build();
+
+ EXPECT_TRUE(backoff.hasNextTimeout());
+ EXPECT_EQ(0x00000003U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000006U, backoff.getNextTimeout());
+ EXPECT_EQ(0x0000000cU, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000018U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000030U, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000060U, backoff.getNextTimeout());
+ EXPECT_EQ(0x000000c0U, backoff.getNextTimeout());
+
+ for (int i = 0; i < 10; i++) {
+ EXPECT_FALSE(backoff.hasNextTimeout());
+ EXPECT_EQ(backoff.getEndOfSequenceIndicator(), backoff.getNextTimeout());
+ }
+}
+
+TEST(BackoffSequence, simpleMaxDuration) {
+ auto backoff = BackoffSequence<int>::Builder()
+ .withInitialRetransmissionTime(3)
+ .withMaximumRetransmissionDuration(7)
+ .withEndOfSequenceIndicator(-1)
+ .build();
+
+ EXPECT_TRUE(backoff.hasNextTimeout());
+ EXPECT_EQ(0x00000003, backoff.getNextTimeout());
+ EXPECT_EQ(0x00000004, backoff.getNextTimeout());
+
+ for (int i = 0; i < 10; i++) {
+ EXPECT_FALSE(backoff.hasNextTimeout());
+ EXPECT_EQ(backoff.getEndOfSequenceIndicator(), backoff.getNextTimeout());
+ EXPECT_EQ(-1, backoff.getNextTimeout());
+ }
+}
+
+TEST(PathologicalBackoffSequence, ZeroInitialRetransTime) {
+ auto backoff = BackoffSequence<std::chrono::seconds>::Builder()
+ .withInitialRetransmissionTime(std::chrono::seconds(0))
+ .build();
+
+ for (int i = 0; i < 10; i++) {
+ // TODO: Decide whether this needs fixing, and how.
+ EXPECT_TRUE(backoff.hasNextTimeout());
+ EXPECT_EQ(backoff.getEndOfSequenceIndicator(), backoff.getNextTimeout());
+ }
+}
+
+TEST(PathologicalBackoffSequence, MaxRetransDurationGreaterThanInitialRetransTime) {
+ auto backoff = BackoffSequence<std::chrono::milliseconds>::Builder()
+ .withInitialRetransmissionTime(std::chrono::milliseconds(5))
+ .withMaximumRetransmissionDuration(std::chrono::milliseconds(3))
+ .build();
+
+ EXPECT_EQ(std::chrono::milliseconds(3), backoff.getNextTimeout());
+ for (int i = 0; i < 10; i++) {
+ EXPECT_FALSE(backoff.hasNextTimeout());
+ EXPECT_EQ(backoff.getEndOfSequenceIndicator(), backoff.getNextTimeout());
+ }
+}
+
+TEST(PathologicalBackoffSequence, MaxRetransDurationEqualsInitialRetransTime) {
+ auto backoff = BackoffSequence<std::chrono::hours>::Builder()
+ .withInitialRetransmissionTime(std::chrono::hours(5))
+ .withMaximumRetransmissionDuration(std::chrono::hours(5))
+ .build();
+
+ EXPECT_EQ(std::chrono::hours(5), backoff.getNextTimeout());
+ for (int i = 0; i < 10; i++) {
+ EXPECT_FALSE(backoff.hasNextTimeout());
+ EXPECT_EQ(backoff.getEndOfSequenceIndicator(), backoff.getNextTimeout());
+ }
+}
+
+TEST(PathologicalBackoffSequence, MaxRetransTimeAndDurationGreaterThanInitialRetransTime) {
+ auto backoff = BackoffSequence<std::chrono::nanoseconds>::Builder()
+ .withInitialRetransmissionTime(std::chrono::nanoseconds(7))
+ .withMaximumRetransmissionTime(std::chrono::nanoseconds(3))
+ .withMaximumRetransmissionDuration(std::chrono::nanoseconds(5))
+ .build();
+
+ EXPECT_EQ(std::chrono::nanoseconds(3), backoff.getNextTimeout());
+ EXPECT_EQ(std::chrono::nanoseconds(2), backoff.getNextTimeout());
+ for (int i = 0; i < 10; i++) {
+ EXPECT_FALSE(backoff.hasNextTimeout());
+ EXPECT_EQ(backoff.getEndOfSequenceIndicator(), backoff.getNextTimeout());
+ }
+}
+
+} // namespace netdutils
+} // namespace android