Add packet counts to uid and iface stats.

Needed to add Ethernet overhead to uid_stats (IP level)
to compare with interface stats (Ethernet level).

Change-Id: Ia6324c21a868eea5ad3b67f546c9d10c7fb64172

Author: ashish-s-sharma

services/java/com/android/server/EventLogTags.logtags

@@ -142,5 +142,5 @@ option java_package com.android.server
 # ---------------------------
 # NetworkStatsService.java
 # ---------------------------
-51100 netstats_mobile_sample (iface_rx|2|2),(iface_tx|2|2),(uid_rx|2|2),(uid_tx|2|2)
-51101 netstats_wifi_sample (iface_rx|2|2),(iface_tx|2|2),(uid_rx|2|2),(uid_tx|2|2)
+51100 netstats_mobile_sample (iface_rx_bytes|2|2),(iface_tx_bytes|2|2),(iface_rx_pkts|2|1),(iface_tx_pkts|2|1),(uid_rx_bytes|2|2),(uid_tx_bytes|2|2),(uid_rx_pkts|2|1),(uid_tx_pkts|2|1)
+51101 netstats_wifi_sample (iface_rx_bytes|2|2),(iface_tx_bytes|2|2),(iface_rx_pkts|2|1),(iface_tx_pkts|2|1),(uid_rx_bytes|2|2),(uid_tx_bytes|2|2),(uid_rx_pkts|2|1),(uid_tx_pkts|2|1)

services/java/com/android/server/net/NetworkStatsService.java

@@ -855,14 +855,20 @@ private void performSample() {
         ifaceTotal = getSummaryForNetwork(template, start, end).getTotal(ifaceTotal);
         uidTotal = getSummaryForAllUid(template, start, end, false).getTotal(uidTotal);
         EventLogTags.writeNetstatsMobileSample(
-                ifaceTotal.rxBytes, ifaceTotal.txBytes, uidTotal.rxBytes, uidTotal.txBytes);
+                ifaceTotal.rxBytes, ifaceTotal.txBytes,
+                ifaceTotal.rxPackets, ifaceTotal.txPackets,
+                uidTotal.rxBytes, uidTotal.txBytes,
+                uidTotal.rxPackets, uidTotal.txPackets);
 
         // collect wifi sample
         template = buildTemplateWifi();
         ifaceTotal = getSummaryForNetwork(template, start, end).getTotal(ifaceTotal);
         uidTotal = getSummaryForAllUid(template, start, end, false).getTotal(uidTotal);
         EventLogTags.writeNetstatsWifiSample(
-                ifaceTotal.rxBytes, ifaceTotal.txBytes, uidTotal.rxBytes, uidTotal.txBytes);
+                ifaceTotal.rxBytes, ifaceTotal.txBytes,
+                ifaceTotal.rxPackets, ifaceTotal.txPackets,
+                uidTotal.rxBytes, uidTotal.txBytes,
+                uidTotal.rxPackets, uidTotal.txPackets);
     }
 
     /**