commit 956d86ccdf32fbc8d3d1b2a657cb02a6ce902e27
author Motomu Utsumi <motomuman@google.com> Fri Sep 02 17:01:25 2022 +0900
committer Motomu Utsumi <motomuman@google.com> Tue Oct 04 15:02:41 2022 +0900
tree 189ae59d19c8eae9e7f8c0cc764d8dbe6a368fd7
parent 310850f2109df0146bc5a74e0a2d0ae105f05dac

Move uidOwnerMap dump to BpfNetMaps

Before this CL
....
mUidOwnerMap:
10050  IIF_MATCH LOCKDOWN_VPN_MATCH 0
10061  HAPPY_BOX_MATCH
10091  HAPPY_BOX_MATCH IIF_MATCH LOCKDOWN_VPN_MATCH 0
....

After this CL
....
sUidOwnerMap:
  10050 IIF_MATCH LOCKDOWN_VPN_MATCH 0
  10061 HAPPY_BOX_MATCH
  10091 HAPPY_BOX_MATCH IIF_MATCH LOCKDOWN_VPN_MATCH 0
....

Bug: 217624062
Test: dumpsys connectivity trafficcontroller, atest BpfNetMapsTest
Change-Id: I0e2358e462824273a89fcba6e19e75a233f9fe18

service/src/com/android/server/BpfNetMaps.java

diff --git a/service/src/com/android/server/BpfNetMaps.java b/service/src/com/android/server/BpfNetMaps.java
index 0015da2..e571415 100644
--- a/service/src/com/android/server/BpfNetMaps.java
+++ b/service/src/com/android/server/BpfNetMaps.java
@@ -145,6 +145,20 @@
             Pair.create(PERMISSION_INTERNET, "PERMISSION_INTERNET"),
             Pair.create(PERMISSION_UPDATE_DEVICE_STATS, "PERMISSION_UPDATE_DEVICE_STATS")
     );
+    private static final List<Pair<Long, String>> MATCH_LIST = Arrays.asList(
+            Pair.create(HAPPY_BOX_MATCH, "HAPPY_BOX_MATCH"),
+            Pair.create(PENALTY_BOX_MATCH, "PENALTY_BOX_MATCH"),
+            Pair.create(DOZABLE_MATCH, "DOZABLE_MATCH"),
+            Pair.create(STANDBY_MATCH, "STANDBY_MATCH"),
+            Pair.create(POWERSAVE_MATCH, "POWERSAVE_MATCH"),
+            Pair.create(RESTRICTED_MATCH, "RESTRICTED_MATCH"),
+            Pair.create(LOW_POWER_STANDBY_MATCH, "LOW_POWER_STANDBY_MATCH"),
+            Pair.create(IIF_MATCH, "IIF_MATCH"),
+            Pair.create(LOCKDOWN_VPN_MATCH, "LOCKDOWN_VPN_MATCH"),
+            Pair.create(OEM_DENY_1_MATCH, "OEM_DENY_1_MATCH"),
+            Pair.create(OEM_DENY_2_MATCH, "OEM_DENY_2_MATCH"),
+            Pair.create(OEM_DENY_3_MATCH, "OEM_DENY_3_MATCH")
+    );
 
     /**
      * Set sEnableJavaBpfMap for test.
@@ -950,6 +964,26 @@
         return sj.toString();
     }
 
+    private String matchToString(long matchMask) {
+        if (matchMask == NO_MATCH) {
+            return "NO_MATCH";
+        }
+
+        final StringJoiner sj = new StringJoiner(" ");
+        for (Pair<Long, String> match: MATCH_LIST) {
+            final long matchFlag = match.first;
+            final String matchName = match.second;
+            if ((matchMask & matchFlag) != 0) {
+                sj.add(matchName);
+                matchMask &= ~matchFlag;
+            }
+        }
+        if (matchMask != 0) {
+            sj.add("UNKNOWN_MATCH(" + matchMask + ")");
+        }
+        return sj.toString();
+    }
+
     /**
      * Dump BPF maps
      *
@@ -969,6 +1003,15 @@
         mDeps.nativeDump(fd, verbose);
 
         if (verbose) {
+            BpfDump.dumpMap(sUidOwnerMap, pw, "sUidOwnerMap",
+                    (uid, match) -> {
+                        if ((match.rule & IIF_MATCH) != 0) {
+                            // TODO: convert interface index to interface name by IfaceIndexNameMap
+                            return uid.val + " " + matchToString(match.rule) + " " + match.iif;
+                        } else {
+                            return uid.val + " " + matchToString(match.rule);
+                        }
+                    });
             BpfDump.dumpMap(sUidPermissionMap, pw, "sUidPermissionMap",
                     (uid, permission) -> uid.val + " " + permissionToString(permission.val));
         }