Add test to ensure filter age increases
Test: atest ApfIntegrationTest
Change-Id: I1ca8dd73cf9489954ee2af6d5c9683b176b967f3
diff --git a/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt b/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt
index 3b7ff83..06cbf82 100644
--- a/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt
+++ b/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt
@@ -466,4 +466,42 @@
expect.withMessage("PACKET_SIZE").that(buffer.getInt()).isEqualTo(64 + 40 + 14)
expect.withMessage("FILTER_AGE_SECONDS").that(buffer.getInt()).isLessThan(5)
}
+
+ // APF integration is mostly broken before V
+ @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+ @Test
+ fun testFilterAgeIncreasesBetweenPackets() {
+ assumeApfVersionSupportAtLeast(4)
+ clearApfMemory()
+ val gen = ApfV4Generator(4)
+
+ // If not ICMPv6 Echo Reply -> PASS
+ gen.addPassIfNotIcmpv6EchoReply()
+
+ // Store all prefilled memory slots in counter region [500, 520)
+ val counterRegion = 500
+ gen.addLoadImmediate(R1, counterRegion)
+ gen.addLoadFromMemory(R0, MemorySlot.FILTER_AGE_SECONDS)
+ gen.addStoreData(R0, 0)
+
+ installProgram(gen.generate())
+ readProgram() // wait for install completion
+
+ val data = ByteArray(56).also { Random.nextBytes(it) }
+ packetReader.sendPing(data)
+ packetReader.expectPingReply()
+
+ var buffer = ByteBuffer.wrap(readProgram(), counterRegion, 4 /* length */)
+ val filterAgeSecondsOrig = buffer.getInt()
+
+ Thread.sleep(5100)
+
+ packetReader.sendPing(data)
+ packetReader.expectPingReply()
+
+ buffer = ByteBuffer.wrap(readProgram(), counterRegion, 4 /* length */)
+ val filterAgeSeconds = buffer.getInt()
+ // Assert that filter age has increased, but not too much.
+ assertThat(filterAgeSeconds - filterAgeSecondsOrig).isEqualTo(5)
+ }
}