Bug 811635 - Part 5: Starting wpa_supplicant with proper 'p2pSupported' flag. r=vchang

We use 'ro.moz.wifi.p2p_supported' to determine if p2p is supported.

dom/wifi/WifiUtils.cpp

@@ -5,6 +5,7 @@
 #include "WifiUtils.h"
 #include <dlfcn.h>
 #include <errno.h>
+#include <cutils/properties.h>
 #include "prinit.h"
 #include "js/CharacterEncoding.h"
 #include "NetUtils.h"
@@ -34,6 +35,14 @@ GetSharedLibrary()
   return sWifiLib;
 }
 
+static bool
+GetWifiP2pSupported()
+{
+  char propP2pSupported[PROPERTY_VALUE_MAX];
+  property_get("ro.moz.wifi.p2p_supported", propP2pSupported, "0");
+  return (0 == strcmp(propP2pSupported, "1"));
+}
+
 // This is the same algorithm as in InflateUTF8StringToBuffer with Copy and
 // while ignoring invalids.
 // https://mxr.mozilla.org/mozilla-central/source/js/src/vm/CharacterEncoding.cpp#231
@@ -276,7 +285,7 @@ bool WpaSupplicant::ExecuteCommand(CommandOptions aOptions,
   } else if (aOptions.mCmd.EqualsLiteral("unload_driver")) {
     aResult.mStatus = mImpl->do_wifi_unload_driver();
   } else if (aOptions.mCmd.EqualsLiteral("start_supplicant")) {
-    aResult.mStatus = mImpl->do_wifi_start_supplicant(0);
+    aResult.mStatus = mImpl->do_wifi_start_supplicant(GetWifiP2pSupported() ? 1 : 0);
   } else if (aOptions.mCmd.EqualsLiteral("stop_supplicant")) {
     aResult.mStatus = mImpl->do_wifi_stop_supplicant();
   } else if (aOptions.mCmd.EqualsLiteral("connect_to_supplicant")) {