Added parsing logic for subtypes 0xA and 0xC in dumpsys wifi

Added parsing for disassociation (subtype 0xA) and
deauthentication (subtype 0xC) frames.
Also decode numeric reason code into a more
descriptive string that explains why the
disassociation/deauthentication frames were sent,
per the 2016 802.11 specs.

Bug: 30502480
Fix: 30502480
Test: frameworks/opt/net/wifi/tests/wifitests/runtests.sh
Test: manual - connect to an AP using the wrong password,
verify that `adb shell dumpsys wifi` shows failed connection
with last packet type as "Deauthentication".

Change-Id: I75b07e1362f04d8d990facb0f61371a122d0e43b

1 files changed, 71 insertions, 0 deletions

diff --git a/tests/wifitests/src/com/android/server/wifi/util/FrameParserTest.java b/tests/wifitests/src/com/android/server/wifi/util/FrameParserTest.java
index 1de6eca00..5a61d0bf8 100644
--- a/tests/wifitests/src/com/android/server/wifi/util/FrameParserTest.java
+++ b/tests/wifitests/src/com/android/server/wifi/util/FrameParserTest.java
@@ -269,4 +269,75 @@ public class FrameParserTest {
         assertEquals("Association Request", parser.mTypeString);
         assertEquals("N/A", parser.mResultString);
     }
+
+    /** Test that we parse the result code of a deauthentication frame */
+    @Test
+    public void parseDeauthenticationResultCode() {
+        FrameParser parser = new FrameParser(
+                WifiLoggerHal.FRAME_TYPE_80211_MGMT,
+                new byte[]{
+                        (byte) 0xc0,  // type + subtype
+                        0x00,  // flags
+                        0x00, 0x00,  // duration (from host; probably to be filled by firmware)
+                        // addr1 (RA):
+                        (byte) 0xa0, 0x63, (byte) 0x91, (byte) 0xa9, (byte) 0xed, (byte) 0xa1,
+                        // addr2 (TA):
+                        (byte) 0xf4, (byte) 0xf5, (byte) 0xe8, 0x51, (byte) 0x9e, 0x09,
+                        // addr3 (BSSID):
+                        (byte) 0xa0, 0x63, (byte) 0x91, (byte) 0xa9, (byte) 0xed, (byte) 0xa1,
+                        0x70, (byte) 0x80,  // sequence + control
+                        0x03, 0x00,  // reason code
+                });
+        assertEquals("802.11 Mgmt", parser.mMostSpecificProtocolString);
+        assertEquals("Deauthentication", parser.mTypeString);
+        assertEquals(
+                "3: Deauthenticated because sending STA is leaving (or has left) IBSS or ESS",
+                parser.mResultString);
+    }
+
+    /** Test that we parse the result code of a disassociation frame */
+    @Test
+    public void parseDisassociationResultCode() {
+        FrameParser parser = new FrameParser(
+                WifiLoggerHal.FRAME_TYPE_80211_MGMT,
+                new byte[]{
+                        (byte) 0xa0,  // type + subtype
+                        0x00,  // flags
+                        0x00, 0x00,  // duration (from host; probably to be filled by firmware)
+                        // addr1 (RA):
+                        (byte) 0xa0, 0x63, (byte) 0x91, (byte) 0xa9, (byte) 0xed, (byte) 0xa1,
+                        // addr2 (TA):
+                        (byte) 0xf4, (byte) 0xf5, (byte) 0xe8, 0x51, (byte) 0x9e, 0x09,
+                        // addr3 (BSSID):
+                        (byte) 0xa0, 0x63, (byte) 0x91, (byte) 0xa9, (byte) 0xed, (byte) 0xa1,
+                        0x70, (byte) 0x80,  // sequence + control
+                        0x04, 0x00,  // reason code
+                });
+        assertEquals("802.11 Mgmt", parser.mMostSpecificProtocolString);
+        assertEquals("Disassociation", parser.mTypeString);
+        assertEquals("4: Disassociated due to inactivity", parser.mResultString);
+    }
+
+    /** Test that we parse the subtype of an Action No Ack frame */
+    @Test
+    public void parseActionNoAckSubtype() {
+        FrameParser parser = new FrameParser(
+                WifiLoggerHal.FRAME_TYPE_80211_MGMT,
+                new byte[]{
+                        (byte) 0xe0,  // type + subtype
+                        0x00,  // flags
+                        0x00, 0x00,  // duration (from host; probably to be filled by firmware)
+                        // addr1 (RA):
+                        (byte) 0xa0, 0x63, (byte) 0x91, (byte) 0xa9, (byte) 0xed, (byte) 0xa1,
+                        // addr2 (TA):
+                        (byte) 0xf4, (byte) 0xf5, (byte) 0xe8, 0x51, (byte) 0x9e, 0x09,
+                        // addr3 (BSSID):
+                        (byte) 0xa0, 0x63, (byte) 0x91, (byte) 0xa9, (byte) 0xed, (byte) 0xa1,
+                        0x70, (byte) 0x80,  // sequence + control
+                        0x00, 0x00,  // action
+                });
+        assertEquals("802.11 Mgmt", parser.mMostSpecificProtocolString);
+        assertEquals("Action No Ack", parser.mTypeString);
+        assertEquals("N/A", parser.mResultString);
+    }
 }
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